How to use uniqueStringsAndSymbols method in unexpected

Best JavaScript code snippet using unexpected

types.js

Source:types.js

1const utils = require('./utils');2const isRegExp = utils.isRegExp;3const leftPad = utils.leftPad;4const arrayChanges = require('array-changes');5const ukkonen = require('ukkonen');6const detectIndent = require('detect-indent');7const defaultDepth = require('./defaultDepth');8const AssertionString = require('./AssertionString');9module.exports = function (expect) {10  expect.addType({11    name: 'wrapperObject',12    identify: false,13    equal(a, b, equal) {14      return a === b || equal(this.unwrap(a), this.unwrap(b));15    },16    inspect(value, depth, output, inspect) {17      output.append(this.prefix(output.clone(), value));18      output.append(inspect(this.unwrap(value), depth));19      output.append(this.suffix(output.clone(), value));20      return output;21    },22    diff(actual, expected, output, diff, inspect) {23      output.inline = true;24      actual = this.unwrap(actual);25      expected = this.unwrap(expected);26      const comparison = diff(actual, expected);27      const prefixOutput = this.prefix(output.clone(), actual);28      const suffixOutput = this.suffix(output.clone(), actual);29      if (comparison && comparison.inline) {30        return output31          .append(prefixOutput)32          .append(comparison)33          .append(suffixOutput);34      } else {35        return output36          .append(prefixOutput)37          .nl()38          .indentLines()39          .i()40          .block(function () {41            this.append(inspect(actual))42              .sp()43              .annotationBlock(function () {44                this.shouldEqualError(expected, inspect);45                if (comparison) {46                  this.nl(2).append(comparison);47                }48              });49          })50          .nl()51          .outdentLines()52          .append(suffixOutput);53      }54    },55  });56  expect.addType({57    name: 'Symbol',58    identify(obj) {59      return typeof obj === 'symbol';60    },61    inspect(obj, depth, output, inspect) {62      return output63        .jsKeyword('Symbol')64        .text('(')65        .singleQuotedString(obj.toString().replace(/^Symbol\(|\)$/g, ''))66        .text(')');67    },68  });69  expect.addType({70    name: 'object',71    indent: true,72    forceMultipleLines: false,73    identify(obj) {74      return obj && typeof obj === 'object';75    },76    prefix(output, obj) {77      const constructor = obj.constructor;78      const constructorName =79        constructor &&80        typeof constructor === 'function' &&81        constructor !== Object &&82        utils.getFunctionName(constructor);83      if (constructorName && constructorName !== 'Object') {84        output.text(`${constructorName}(`);85      }86      return output.text('{');87    },88    property(output, key, inspectedValue, isArrayLike) {89      return output.propertyForObject(key, inspectedValue, isArrayLike);90    },91    suffix(output, obj) {92      output.text('}');93      const constructor = obj.constructor;94      const constructorName =95        constructor &&96        typeof constructor === 'function' &&97        constructor !== Object &&98        utils.getFunctionName(constructor);99      if (constructorName && constructorName !== 'Object') {100        output.text(')');101      }102      return output;103    },104    delimiter(output, i, length) {105      if (i < length - 1) {106        output.text(',');107      }108      return output;109    },110    getKeys: Object.getOwnPropertySymbols111      ? (obj) => {112          const keys = Object.getOwnPropertyNames(obj);113          const symbols = Object.getOwnPropertySymbols(obj);114          if (symbols.length > 0) {115            return keys.concat(symbols);116          } else {117            return keys;118          }119        }120      : Object.getOwnPropertyNames,121    // If Symbol support is not detected default to undefined which, when122    // passed to Array.prototype.sort, means "natural" (asciibetical) sort.123    keyComparator:124      typeof Symbol === 'function'125        ? (a, b) => {126            let aString = a;127            let bString = b;128            const aIsSymbol = typeof a === 'symbol';129            const bIsSymbol = typeof b === 'symbol';130            if (aIsSymbol) {131              if (bIsSymbol) {132                aString = a.toString();133                bString = b.toString();134              } else {135                return 1;136              }137            } else if (bIsSymbol) {138              return -1;139            }140            if (aString < bString) {141              return -1;142            } else if (aString > bString) {143              return 1;144            }145            return 0;146          }147        : undefined,148    equal(a, b, equal) {149      return utils.checkObjectEqualityUsingType(a, b, this, equal);150    },151    hasKey(obj, key, own) {152      if (own) {153        return Object.prototype.hasOwnProperty.call(obj, key);154      } else {155        return key in obj;156      }157    },158    inspect(obj, depth, output, inspect) {159      const keys = this.getKeys(obj);160      if (keys.length === 0) {161        this.prefix(output, obj);162        this.suffix(output, obj);163        return output;164      }165      const type = this;166      const inspectedItems = keys.map((key, index) => {167        const propertyDescriptor =168          Object.getOwnPropertyDescriptor &&169          Object.getOwnPropertyDescriptor(obj, key);170        const hasGetter = propertyDescriptor && propertyDescriptor.get;171        const hasSetter = propertyDescriptor && propertyDescriptor.set;172        const propertyOutput = output.clone();173        if (hasSetter && !hasGetter) {174          propertyOutput.text('set').sp();175        }176        // Inspect the setter function if there's no getter:177        let value;178        if (hasSetter && !hasGetter) {179          value = hasSetter;180        } else {181          value = type.valueForKey(obj, key);182        }183        let inspectedValue = inspect(value);184        if (value && value._expectIt) {185          inspectedValue = output.clone().block(inspectedValue);186        }187        type.property(propertyOutput, key, inspectedValue);188        propertyOutput.amend(189          type.delimiter(output.clone(), index, keys.length)190        );191        if (hasGetter && hasSetter) {192          propertyOutput.sp().jsComment('/* getter/setter */');193        } else if (hasGetter) {194          propertyOutput.sp().jsComment('/* getter */');195        }196        return propertyOutput;197      });198      const maxLineLength =199        output.preferredWidth - (depth === Infinity ? 0 : depth) * 2 - 2;200      let width = 0;201      const compact =202        inspectedItems.length > 5 ||203        inspectedItems.every((inspectedItem) => {204          if (inspectedItem.isMultiline()) {205            return false;206          }207          width += inspectedItem.size().width;208          return width < maxLineLength;209        });210      const itemsOutput = output.clone();211      if (compact) {212        let currentLineLength = 0;213        inspectedItems.forEach((inspectedItem, index) => {214          const size = inspectedItem.size();215          currentLineLength += size.width + 1;216          if (index > 0) {217            if (size.height === 1 && currentLineLength < maxLineLength) {218              itemsOutput.sp();219            } else {220              itemsOutput.nl();221              currentLineLength = size.width;222            }223            if (size.height > 1) {224              // Make sure that we don't append more to this line225              currentLineLength = maxLineLength;226            }227          }228          itemsOutput.append(inspectedItem);229        });230      } else {231        inspectedItems.forEach((inspectedItem, index) => {232          if (index > 0) {233            itemsOutput.nl();234          }235          itemsOutput.append(inspectedItem);236        });237      }238      const prefixOutput = this.prefix(output.clone(), obj);239      const suffixOutput = this.suffix(output.clone(), obj);240      output.append(prefixOutput);241      if (this.forceMultipleLines || itemsOutput.isMultiline()) {242        if (!prefixOutput.isEmpty()) {243          output.nl();244        }245        if (this.indent) {246          output.indentLines().i();247        }248        output.block(itemsOutput);249        if (this.indent) {250          output.outdentLines();251        }252        if (!suffixOutput.isEmpty()) {253          output.nl();254        }255      } else {256        output257          .sp(prefixOutput.isEmpty() ? 0 : 1)258          .append(itemsOutput)259          .sp(suffixOutput.isEmpty() ? 0 : 1);260      }261      return output.append(suffixOutput);262    },263    diff(actual, expected, output, diff, inspect, equal) {264      if (actual.constructor !== expected.constructor) {265        return output266          .text('Mismatching constructors ')267          .text(268            (actual.constructor && utils.getFunctionName(actual.constructor)) ||269              actual.constructor270          )271          .text(' should be ')272          .text(273            (expected.constructor &&274              utils.getFunctionName(expected.constructor)) ||275              expected.constructor276          );277      }278      output.inline = true;279      const actualKeys = this.getKeys(actual);280      const expectedKeys = this.getKeys(expected);281      const keys = this.uniqueKeys(actualKeys, expectedKeys);282      const prefixOutput = this.prefix(output.clone(), actual);283      output.append(prefixOutput).nl(prefixOutput.isEmpty() ? 0 : 1);284      if (this.indent) {285        output.indentLines();286      }287      const type = this;288      keys.forEach((key, index) => {289        output290          .nl(index > 0 ? 1 : 0)291          .i()292          .block(function () {293            const valueActual = type.valueForKey(actual, key);294            const valueExpected = type.valueForKey(expected, key);295            const annotation = output.clone();296            const conflicting = !equal(valueActual, valueExpected);297            let isInlineDiff = false;298            let valueOutput;299            if (conflicting) {300              if (!type.hasKey(expected, key)) {301                annotation.error('should be removed');302                isInlineDiff = true;303              } else if (!type.hasKey(actual, key)) {304                this.error('// missing').sp();305                valueOutput = output.clone().appendInspected(valueExpected);306                isInlineDiff = true;307              } else {308                const keyDiff = diff(valueActual, valueExpected);309                if (!keyDiff || (keyDiff && !keyDiff.inline)) {310                  annotation.shouldEqualError(valueExpected);311                  if (keyDiff) {312                    annotation.nl(2).append(keyDiff);313                  }314                } else {315                  isInlineDiff = true;316                  valueOutput = keyDiff;317                }318              }319            } else {320              isInlineDiff = true;321            }322            if (!valueOutput) {323              valueOutput = inspect(valueActual, conflicting ? Infinity : null);324            }325            valueOutput.amend(326              type.delimiter(output.clone(), index, actualKeys.length)327            );328            if (!isInlineDiff) {329              valueOutput = output.clone().block(valueOutput);330            }331            type.property(this, key, valueOutput);332            if (!annotation.isEmpty()) {333              this.sp().annotationBlock(annotation);334            }335          });336      });337      if (this.indent) {338        output.outdentLines();339      }340      const suffixOutput = this.suffix(output.clone(), actual);341      return output.nl(suffixOutput.isEmpty() ? 0 : 1).append(suffixOutput);342    },343    similar(a, b) {344      if (a === null || b === null) {345        return false;346      }347      const typeA = typeof a;348      const typeB = typeof b;349      if (typeA !== typeB) {350        return false;351      }352      if (typeA === 'string') {353        return ukkonen(a, b) < a.length / 2;354      }355      if (typeA !== 'object' || !a) {356        return false;357      }358      if (utils.isArray(a) && utils.isArray(b)) {359        return true;360      }361      const aKeys = this.getKeys(a);362      const bKeys = this.getKeys(b);363      let numberOfSimilarKeys = 0;364      const requiredSimilarKeys = Math.round(365        Math.max(aKeys.length, bKeys.length) / 2366      );367      return aKeys.concat(bKeys).some((key) => {368        if (this.hasKey(a, key) && this.hasKey(b, key)) {369          numberOfSimilarKeys += 1;370        }371        return numberOfSimilarKeys >= requiredSimilarKeys;372      });373    },374    uniqueKeys: utils.uniqueStringsAndSymbols,375    valueForKey(obj, key) {376      return obj[key];377    },378  });379  expect.addType({380    name: 'type',381    base: 'object',382    identify(value) {383      return value && value._unexpectedType;384    },385    inspect({ name }, depth, output) {386      return output.text('type: ').jsKeyword(name);387    },388  });389  expect.addType({390    name: 'array-like',391    base: 'object',392    identify: false,393    numericalPropertiesOnly: true,394    getKeys(obj) {395      const keys = new Array(obj.length);396      for (let i = 0; i < obj.length; i += 1) {397        keys[i] = i;398      }399      if (!this.numericalPropertiesOnly) {400        keys.push(...this.getKeysNonNumerical(obj));401      }402      return keys;403    },404    getKeysNonNumerical: Object.getOwnPropertySymbols405      ? (obj) => {406          const keys = [];407          Object.keys(obj).forEach((key) => {408            if (!utils.numericalRegExp.test(key)) {409              keys.push(key);410            }411          });412          const symbols = Object.getOwnPropertySymbols(obj);413          if (symbols.length > 0) {414            keys.push(...symbols);415          }416          return keys;417        }418      : (obj) => {419          const keys = [];420          Object.keys(obj).forEach((key) => {421            if (!utils.numericalRegExp.test(key)) {422              keys.push(key);423            }424          });425          return keys;426        },427    equal(a, b, equal) {428      if (a === b) {429        return true;430      } else if (a.constructor === b.constructor && a.length === b.length) {431        let i;432        // compare numerically indexed elements433        for (i = 0; i < a.length; i += 1) {434          if (!equal(this.valueForKey(a, i), this.valueForKey(b, i))) {435            return false;436          }437        }438        // compare non-numerical keys if enabled for the type439        if (!this.numericalPropertiesOnly) {440          const aKeys = this.getKeysNonNumerical(a).filter((key) => {441            // include keys whose value is not undefined442            return typeof this.valueForKey(a, key) !== 'undefined';443          });444          const bKeys = this.getKeysNonNumerical(b).filter((key) => {445            // include keys whose value is not undefined on either LHS or RHS446            return (447              typeof this.valueForKey(b, key) !== 'undefined' ||448              typeof this.valueForKey(a, key) !== 'undefined'449            );450          });451          if (aKeys.length !== bKeys.length) {452            return false;453          }454          for (i = 0; i < aKeys.length; i += 1) {455            if (456              !equal(457                this.valueForKey(a, aKeys[i]),458                this.valueForKey(b, bKeys[i])459              )460            ) {461              return false;462            }463          }464        }465        return true;466      } else {467        return false;468      }469    },470    prefix(output) {471      return output.text('[');472    },473    suffix(output) {474      return output.text(']');475    },476    inspect(arr, depth, output, inspect) {477      const prefixOutput = this.prefix(output.clone(), arr);478      const suffixOutput = this.suffix(output.clone(), arr);479      const keys = this.getKeys(arr);480      if (keys.length === 0) {481        return output.append(prefixOutput).append(suffixOutput);482      }483      if (depth === 1 && arr.length > 10) {484        return output.append(prefixOutput).text('...').append(suffixOutput);485      }486      const inspectedItems = keys.map((key) => {487        let inspectedValue;488        if (this.hasKey(arr, key)) {489          inspectedValue = inspect(this.valueForKey(arr, key));490        } else if (utils.numericalRegExp.test(key)) {491          // Sparse array entry492          inspectedValue = output.clone();493        } else {494          // Not present non-numerical property returned by getKeys495          inspectedValue = inspect(undefined);496        }497        return this.property(output.clone(), key, inspectedValue, true);498      });499      const currentDepth = defaultDepth - Math.min(defaultDepth, depth);500      const maxLineLength =501        output.preferredWidth - 20 - currentDepth * output.indentationWidth - 2;502      let width = 0;503      const multipleLines =504        this.forceMultipleLines ||505        inspectedItems.some((o) => {506          if (o.isMultiline()) {507            return true;508          }509          const size = o.size();510          width += size.width;511          return width > maxLineLength;512        });513      inspectedItems.forEach((inspectedItem, index) => {514        inspectedItem.amend(this.delimiter(output.clone(), index, keys.length));515      });516      if (multipleLines) {517        output.append(prefixOutput);518        if (!prefixOutput.isEmpty()) {519          output.nl();520        }521        if (this.indent) {522          output.indentLines();523        }524        inspectedItems.forEach((inspectedItem, index) => {525          output526            .nl(index > 0 ? 1 : 0)527            .i()528            .block(inspectedItem);529        });530        if (this.indent) {531          output.outdentLines();532        }533        if (!suffixOutput.isEmpty()) {534          output.nl();535        }536        return output.append(suffixOutput);537      } else {538        output.append(prefixOutput).sp(prefixOutput.isEmpty() ? 0 : 1);539        inspectedItems.forEach((inspectedItem, index) => {540          output.append(inspectedItem);541          const lastIndex = index === inspectedItems.length - 1;542          if (!lastIndex) {543            output.sp();544          }545        });546        return output.sp(suffixOutput.isEmpty() ? 0 : 1).append(suffixOutput);547      }548    },549    diffLimit: 512,550    diff(actual, expected, output, diff, inspect, equal) {551      output.inline = true;552      if (Math.max(actual.length, expected.length) > this.diffLimit) {553        output.jsComment(`Diff suppressed due to size > ${this.diffLimit}`);554        return output;555      }556      if (actual.constructor !== expected.constructor) {557        return this.baseType.diff(actual, expected, output);558      }559      const prefixOutput = this.prefix(output.clone(), actual);560      output.append(prefixOutput).nl(prefixOutput.isEmpty() ? 0 : 1);561      if (this.indent) {562        output.indentLines();563      }564      const actualElements = utils.duplicateArrayLikeUsingType(actual, this);565      const actualKeys = this.getKeys(actual);566      const expectedElements = utils.duplicateArrayLikeUsingType(567        expected,568        this569      );570      const expectedKeys = this.getKeys(expected);571      const nonNumericalKeysAndSymbols =572        !this.numericalPropertiesOnly &&573        utils.uniqueNonNumericalStringsAndSymbols(actualKeys, expectedKeys);574      const type = this;575      const changes = arrayChanges(576        actualElements,577        expectedElements,578        equal,579        (a, b) => type.similar(a, b),580        {581          includeNonNumericalProperties: nonNumericalKeysAndSymbols,582        }583      );584      const indexOfLastNonInsert = changes.reduce(585        (previousValue, diffItem, index) =>586          diffItem.type === 'insert' ? previousValue : index,587        -1588      );589      const packing = utils.packArrows(changes); // NOTE: Will have side effects in changes if the packing results in too many arrow lanes590      output.arrowsAlongsideChangeOutputs(591        packing,592        changes.map((diffItem, index) => {593          const delimiterOutput = type.delimiter(594            output.clone(),595            index,596            indexOfLastNonInsert + 1597          );598          if (diffItem.type === 'moveTarget') {599            return output.clone();600          } else {601            return output.clone().block(function () {602              if (diffItem.type === 'moveSource') {603                const propertyOutput = type.property(604                  output.clone(),605                  diffItem.actualIndex,606                  inspect(diffItem.value),607                  true608                );609                this.amend(propertyOutput)610                  .amend(delimiterOutput)611                  .sp()612                  .error('// should be moved');613              } else if (diffItem.type === 'insert') {614                this.annotationBlock(function () {615                  this.error('missing ').block(function () {616                    const index =617                      typeof diffItem.actualIndex !== 'undefined'618                        ? diffItem.actualIndex619                        : diffItem.expectedIndex;620                    const propertyOutput = type.property(621                      output.clone(),622                      index,623                      inspect(diffItem.value),624                      true625                    );626                    this.amend(propertyOutput);627                  });628                });629              } else if (diffItem.type === 'remove') {630                this.block(function () {631                  const propertyOutput = type.property(632                    output.clone(),633                    diffItem.actualIndex,634                    inspect(diffItem.value),635                    true636                  );637                  this.amend(propertyOutput)638                    .amend(delimiterOutput)639                    .sp()640                    .error('// should be removed');641                });642              } else if (diffItem.type === 'equal') {643                this.block(function () {644                  const propertyOutput = type.property(645                    output.clone(),646                    diffItem.actualIndex,647                    inspect(diffItem.value),648                    true649                  );650                  this.amend(propertyOutput).amend(delimiterOutput);651                });652              } else {653                this.block(function () {654                  const valueDiff = diff(diffItem.value, diffItem.expected);655                  if (valueDiff && valueDiff.inline) {656                    this.append(valueDiff).append(delimiterOutput);657                  } else {658                    const propertyOutput = type.property(659                      output.clone(),660                      diffItem.actualIndex,661                      inspect(diffItem.value),662                      true663                    );664                    this.append(propertyOutput)665                      .append(delimiterOutput)666                      .sp()667                      .annotationBlock(function () {668                        this.shouldEqualError(diffItem.expected, inspect);669                        if (valueDiff) {670                          this.nl(2).append(valueDiff);671                        }672                      });673                  }674                });675              }676            });677          }678        })679      );680      if (this.indent) {681        output.outdentLines();682      }683      const suffixOutput = this.suffix(output.clone(), actual);684      return output.nl(suffixOutput.isEmpty() ? 0 : 1).append(suffixOutput);685    },686  });687  expect.addType({688    name: 'array',689    base: 'array-like',690    numericalPropertiesOnly: false,691    identify(arr) {692      return utils.isArray(arr);693    },694  });695  expect.addType({696    name: 'arguments',697    base: 'array-like',698    prefix(output) {699      return output.text('arguments(', 'cyan');700    },701    suffix(output) {702      return output.text(')', 'cyan');703    },704    identify(obj) {705      return Object.prototype.toString.call(obj) === '[object Arguments]';706    },707  });708  const errorMethodBlacklist = [709    'message',710    'name',711    'description',712    'line',713    'number',714    'column',715    'sourceId',716    'sourceURL',717    'stack',718    'stackArray',719    '__stackCleaned__',720    'isOperational', // added by the promise implementation,721    '__callSiteEvals', // attached by deno722  ].reduce((result, prop) => {723    result[prop] = true;724    return result;725  }, {});726  if (Object.prototype.hasOwnProperty.call(new Error(), 'arguments')) {727    // node.js 0.10 adds two extra non-enumerable properties to Error instances:728    errorMethodBlacklist.arguments = true;729    errorMethodBlacklist.type = true;730  }731  expect.addType({732    base: 'object',733    name: 'Error',734    identify(value) {735      return utils.isError(value);736    },737    getKeys(value) {738      const keys = this.baseType739        .getKeys(value)740        .filter((key) => !errorMethodBlacklist[key]);741      keys.unshift('message');742      return keys;743    },744    unwrap(value) {745      return this.getKeys(value).reduce((result, key) => {746        result[key] = value[key];747        return result;748      }, {});749    },750    equal(a, b, equal) {751      return (752        a === b ||753        (equal(a.message, b.message) &&754          utils.checkObjectEqualityUsingType(a, b, this, equal))755      );756    },757    inspect(value, depth, output, inspect) {758      output.errorName(value).text('(');759      const keys = this.getKeys(value);760      if (keys.length === 1 && keys[0] === 'message') {761        if (value.message !== '') {762          output.append(inspect(value.message));763        }764      } else {765        output.append(inspect(this.unwrap(value), depth));766      }767      return output.text(')');768    },769    diff(actual, expected, output, diff) {770      if (actual.constructor !== expected.constructor) {771        return output772          .text('Mismatching constructors ')773          .errorName(actual)774          .text(' should be ')775          .errorName(expected);776      }777      output = diff(this.unwrap(actual), this.unwrap(expected));778      if (output) {779        output = output780          .clone()781          .errorName(actual)782          .text('(')783          .append(output)784          .text(')');785        output.inline = false;786      }787      return output;788    },789  });790  const unexpectedErrorMethodBlacklist = [791    'output',792    '_isUnexpected',793    'htmlMessage',794    '_hasSerializedErrorMessage',795    'expect',796    'assertion',797    'originalError',798  ].reduce((result, prop) => {799    result[prop] = true;800    return result;801  }, {});802  expect.addType({803    base: 'Error',804    name: 'UnexpectedError',805    identify(value) {806      return (807        value &&808        typeof value === 'object' &&809        value._isUnexpected &&810        this.baseType.identify(value)811      );812    },813    getKeys(value) {814      return this.baseType815        .getKeys(value)816        .filter((key) => !unexpectedErrorMethodBlacklist[key]);817    },818    inspect(value, depth, output) {819      output.jsFunctionName(this.name).text('(');820      const errorMessage = value.getErrorMessage(output);821      if (errorMessage.isMultiline()) {822        output.nl().indentLines().i().block(errorMessage).nl();823      } else {824        output.append(errorMessage);825      }826      return output.text(')');827    },828  });829  expect.addType({830    name: 'date',831    identify(obj) {832      return Object.prototype.toString.call(obj) === '[object Date]';833    },834    equal(a, b) {835      return a.getTime() === b.getTime();836    },837    inspect(date, depth, output, inspect) {838      // TODO: Inspect "new" as an operator and Date as a built-in once we have the styles defined:839      return output840        .jsKeyword('new')841        .sp()842        .text('Date(')843        .append(inspect(date.toISOString().replace(/\.000Z$/, 'Z')).text(')'));844    },845  });846  expect.addType({847    base: 'object',848    name: 'function',849    identify(f) {850      return typeof f === 'function';851    },852    getKeys: Object.keys,853    equal(a, b) {854      return a === b;855    },856    inspect(f, depth, output, inspect) {857      // Don't break when a function has its own custom #toString:858      const source = Function.prototype.toString859        .call(f)860        .replace(/\r\n?|\n\r?/g, '\n');861      let name = utils.getFunctionName(f) || '';862      let preamble;863      let body;864      let bodyIndent;865      const matchSource = source.match(866        /^\s*((?:async )?\s*(?:\S+\s*=>|\([^)]*\)\s*=>|class|function\s?(?:\*\s*)?\w*\s*\([^)]*\)))([\s\S]*)$/867      );868      if (matchSource) {869        // Normalize so there's always space after "function" and never after "*" for generator functions:870        preamble = matchSource[1]871          .replace(/function(\S)/, 'function $1')872          .replace(/\* /, '*');873        if (preamble === 'function ()' && name) {874          // fn.bind() doesn't seem to include the name in the .toString() output:875          preamble = `function ${name}()`;876        }877        body = matchSource[2];878        let matchBodyAndIndent = body.match(/^(\s*\{)([\s\S]*?)([ ]*)\}\s*$/);879        let openingBrace;880        let isWrappedInBraces = true;881        let closingBrace = '}';882        let reindentBodyLevel = 0;883        if (matchBodyAndIndent) {884          openingBrace = matchBodyAndIndent[1];885          body = matchBodyAndIndent[2];886          bodyIndent = matchBodyAndIndent[3] || '';887          if (bodyIndent.length === 1) {888            closingBrace = ' }';889          }890        } else {891          // Attempt to match an arrow function with an implicit return body.892          matchBodyAndIndent = body.match(/^(\s*)([\s\S]*?)([ ]*)\s*$/);893          if (matchBodyAndIndent) {894            openingBrace = matchBodyAndIndent[1];895            isWrappedInBraces = false;896            body = matchBodyAndIndent[2];897            const matchInitialNewline = openingBrace.match(/^\n( +)/);898            if (matchInitialNewline) {899              openingBrace = '\n';900              if (/\n/.test(body)) {901                // An arrow function whose body starts with a newline, as prettier likes to output, eg.:902                //        () =>903                //          foo(904                //            1905                //          );906                // Shuffle/hack things around so it will be formatted correctly:907                bodyIndent = matchInitialNewline[1];908                reindentBodyLevel = 1;909              } else {910                body = body.replace(/^\s*/, '  ');911              }912            } else {913              bodyIndent = matchBodyAndIndent[3] || '';914            }915            closingBrace = '';916          }917        }918        // Remove leading indentation unless the function is a one-liner or it uses multiline string literals919        if (/\n/.test(body) && !/\\\n/.test(body)) {920          body = body.replace(new RegExp(`^ {${bodyIndent.length}}`, 'mg'), '');921          const indent = detectIndent(body);922          body = body.replace(923            new RegExp(`^(?:${indent.indent})*`, 'mg'),924            ({ length }) =>925              utils.leftPad(926                '',927                (length / indent.amount + reindentBodyLevel) *928                  output.indentationWidth,929                ' '930              )931          );932        }933        if (!name || name === 'anonymous') {934          name = '';935        }936        if (/^\s*\[native code\]\s*$/.test(body)) {937          body = ' /* native code */ ';938          closingBrace = '}';939        } else if (/^\s*$/.test(body)) {940          body = '';941        } else if (942          /^\s*[^\r\n]{1,30}\s*$/.test(body) &&943          body.indexOf('//') === -1 &&944          isWrappedInBraces945        ) {946          body = ` ${body.trim()} `;947          closingBrace = '}';948        } else {949          body = body.replace(950            /^((?:.*\n){3}( *).*\n)[\s\S]*?\n[\s\S]*?\n((?:.*\n){3})$/,951            '$1$2// ... lines removed ...\n$3'952          );953        }954        if (matchBodyAndIndent) {955          body = openingBrace + body + closingBrace;956        } else {957          // Strip trailing space from arrow function body958          body = body.replace(/[ ]*$/, '');959        }960      } else {961        preamble = `function ${name}( /*...*/ ) `;962        body = '{ /*...*/ }';963      }964      return output.code(preamble + body, 'javascript');965    },966    diff(actual, expected, output) {967      // Avoid rendering an object diff when both are functions968      if (typeof actual !== 'function' || typeof expected !== 'function') {969        return this.baseType.diff(actual, expected, output);970      }971    },972  });973  expect.addType({974    name: 'Set',975    base: 'object',976    indent: true,977    identify(obj) {978      return obj instanceof Set;979    },980    equal(a, b, equal) {981      if (a.size !== b.size) {982        return false;983      }984      let unequal = false;985      a.forEach((value) => {986        unequal = unequal || !b.has(value);987      });988      if (unequal) {989        // Slow path990        const bElements = [];991        b.forEach((element) => {992          bElements.push(element);993        });994        unequal = false;995        a.forEach((value) => {996          unequal =997            unequal ||998            (!b.has(value) &&999              !bElements.some((bElement) => equal(value, bElement)));1000        });1001      }1002      return !unequal;1003    },1004    prefix(output) {1005      return output.jsKeyword('new').sp().jsKeyword('Set').text('([');1006    },1007    suffix(output) {1008      return output.text('])');1009    },1010    inspect(set, depth, output, inspect) {1011      // Mostly copied from array-like's inspect:1012      const prefixOutput = this.prefix(output.clone(), set);1013      const suffixOutput = this.suffix(output.clone(), set);1014      if (set.size === 0) {1015        return output.append(prefixOutput).append(suffixOutput);1016      }1017      if (depth === 1 && set.size > 10) {1018        return output.append(prefixOutput).text('...').append(suffixOutput);1019      }1020      const inspectedItems = [];1021      set.forEach((item) => {1022        inspectedItems.push(inspect(item));1023      });1024      const currentDepth = defaultDepth - Math.min(defaultDepth, depth);1025      const maxLineLength =1026        output.preferredWidth - 20 - currentDepth * output.indentationWidth - 2;1027      let width = 0;1028      const multipleLines = inspectedItems.some((o) => {1029        if (o.isMultiline()) {1030          return true;1031        }1032        const size = o.size();1033        width += size.width;1034        return width > maxLineLength;1035      });1036      const type = this;1037      inspectedItems.forEach((inspectedItem, index) => {1038        inspectedItem.amend(1039          type.delimiter(output.clone(), index, inspectedItems.length)1040        );1041      });1042      output.append(prefixOutput);1043      if (this.forceMultipleLines || multipleLines) {1044        if (!prefixOutput.isEmpty()) {1045          output.nl();1046        }1047        if (this.indent) {1048          output.indentLines();1049        }1050        inspectedItems.forEach((inspectedItem, index) => {1051          output1052            .nl(index > 0 ? 1 : 0)1053            .i()1054            .block(inspectedItem);1055        });1056        if (this.indent) {1057          output.outdentLines();1058        }1059        if (!suffixOutput.isEmpty()) {1060          output.nl();1061        }1062      } else {1063        output.sp(prefixOutput.isEmpty() ? 0 : 1);1064        inspectedItems.forEach((inspectedItem, index) => {1065          output.append(inspectedItem);1066          const lastIndex = index === inspectedItems.length - 1;1067          if (!lastIndex) {1068            output.sp();1069          }1070        });1071        output.sp(suffixOutput.isEmpty() ? 0 : 1);1072      }1073      output.append(suffixOutput);1074    },1075    diff(actual, expected, output, diff, inspect, equal) {1076      output.inline = true;1077      const prefixOutput = this.prefix(output.clone(), actual);1078      const suffixOutput = this.suffix(output.clone(), actual);1079      output.append(prefixOutput).nl(prefixOutput.isEmpty() ? 0 : 1);1080      if (this.indent) {1081        output.indentLines();1082      }1083      const type = this;1084      let index = 0;1085      const actualElements = [];1086      actual.forEach((element) => {1087        actualElements.push(element);1088      });1089      const expectedElements = [];1090      expected.forEach((element) => {1091        expectedElements.push(element);1092      });1093      actual.forEach((actualElement) => {1094        output1095          .nl(index > 0 ? 1 : 0)1096          .i()1097          .block(function () {1098            this.appendInspected(actualElement);1099            type.delimiter(this, index, actual.size);1100            if (1101              !expected.has(actualElement) &&1102              !expectedElements.some((element) => equal(element, actualElement))1103            ) {1104              this.sp().annotationBlock(function () {1105                this.error('should be removed');1106              });1107            }1108          });1109        index += 1;1110      });1111      expected.forEach((expectedElement) => {1112        if (1113          !actual.has(expectedElement) &&1114          !actualElements.some((element) => equal(element, expectedElement))1115        ) {1116          output1117            .nl(index > 0 ? 1 : 0)1118            .i()1119            .annotationBlock(function () {1120              this.error('missing').sp().appendInspected(expectedElement);1121            });1122          index += 1;1123        }1124      });1125      if (this.indent) {1126        output.outdentLines();1127      }1128      output.nl(suffixOutput.isEmpty() ? 0 : 1).append(suffixOutput);1129      return output;1130    },1131  });1132  expect.addType({1133    base: 'function',1134    name: 'expect.it',1135    identify(f) {1136      return typeof f === 'function' && f._expectIt;1137    },1138    inspect({ _expectations, _OR }, depth, output, inspect) {1139      output.text('expect.it(');1140      let orBranch = false;1141      _expectations.forEach((expectation, index) => {1142        if (expectation === _OR) {1143          orBranch = true;1144          return;1145        }1146        if (orBranch) {1147          output.text(')\n      .or(');1148        } else if (index > 0) {1149          output.text(')\n        .and(');1150        }1151        const args = Array.prototype.slice.call(expectation);1152        args.forEach((arg, i) => {1153          if (i > 0) {1154            output.text(', ');1155          }1156          output.append(inspect(arg));1157        });1158        orBranch = false;1159      });1160      return output.amend(')');1161    },1162  });1163  expect.addType({1164    name: 'Promise',1165    base: 'object',1166    identify(obj) {1167      return (1168        obj && this.baseType.identify(obj) && typeof obj.then === 'function'1169      );1170    },1171    inspect(promise, depth, output, inspect) {1172      output.jsFunctionName('Promise');1173      if (promise.isPending && promise.isPending()) {1174        output.sp().yellow('(pending)');1175      } else if (promise.isFulfilled && promise.isFulfilled()) {1176        output.sp().green('(fulfilled)');1177        if (promise.value) {1178          const value = promise.value();1179          if (typeof value !== 'undefined') {1180            output.sp().text('=>').sp().append(inspect(value));1181          }1182        }1183      } else if (promise.isRejected && promise.isRejected()) {1184        output.sp().red('(rejected)');1185        const reason = promise.reason();1186        if (typeof reason !== 'undefined') {1187          output.sp().text('=>').sp().append(inspect(promise.reason()));1188        }1189      }1190      return output;1191    },1192  });1193  expect.addType({1194    name: 'regexp',1195    base: 'object',1196    identify: isRegExp,1197    equal(a, b) {1198      return (1199        a === b ||1200        (a.source === b.source &&1201          a.global === b.global &&1202          a.ignoreCase === b.ignoreCase &&1203          a.multiline === b.multiline)1204      );1205    },1206    inspect(regExp, depth, output) {1207      return output.jsRegexp(regExp);1208    },1209    diff(actual, expected, output, diff, inspect) {1210      output.inline = false;1211      return output.stringDiff(String(actual), String(expected), {1212        type: 'Chars',1213        markUpSpecialCharacters: true,1214      });1215    },1216  });1217  expect.addType({1218    name: 'binaryArray',1219    base: 'array-like',1220    digitWidth: 2,1221    hexDumpWidth: 16,1222    identify: false,1223    prefix(output) {1224      return output.code(`${this.name}([`, 'javascript');1225    },1226    suffix(output) {1227      return output.code('])', 'javascript');1228    },1229    equal(a, b) {1230      if (a === b) {1231        return true;1232      }1233      if (a.length !== b.length) {1234        return false;1235      }1236      for (let i = 0; i < a.length; i += 1) {1237        if (a[i] !== b[i]) {1238          return false;1239        }1240      }1241      return true;1242    },1243    hexDump(obj, maxLength) {1244      let hexDump = '';1245      if (typeof maxLength !== 'number' || maxLength === 0) {1246        maxLength = obj.length;1247      }1248      for (let i = 0; i < maxLength; i += this.hexDumpWidth) {1249        if (hexDump.length > 0) {1250          hexDump += '\n';1251        }1252        let hexChars = '';1253        let asciiChars = ' â';1254        for (let j = 0; j < this.hexDumpWidth; j += 1) {1255          if (i + j < maxLength) {1256            const octet = obj[i + j];1257            hexChars += `${leftPad(1258              octet.toString(16).toUpperCase(),1259              this.digitWidth,1260              '0'1261            )} `;1262            asciiChars += String.fromCharCode(octet)1263              .replace(/\n/g, 'â')1264              .replace(/\r/g, 'â');1265          } else if (this.digitWidth === 2) {1266            hexChars += '   ';1267          }1268        }1269        if (this.digitWidth === 2) {1270          hexDump += `${hexChars + asciiChars}â`;1271        } else {1272          hexDump += hexChars.replace(/\s+$/, '');1273        }1274      }1275      return hexDump;1276    },1277    inspect(obj, depth, output) {1278      this.prefix(output, obj);1279      let codeStr = '';1280      for (let i = 0; i < Math.min(this.hexDumpWidth, obj.length); i += 1) {1281        if (i > 0) {1282          codeStr += ', ';1283        }1284        const octet = obj[i];1285        codeStr += `0x${leftPad(1286          octet.toString(16).toUpperCase(),1287          this.digitWidth,1288          '0'1289        )}`;1290      }1291      if (obj.length > this.hexDumpWidth) {1292        codeStr += ` /* ${obj.length - this.hexDumpWidth} more */ `;1293      }1294      output.code(codeStr, 'javascript');1295      this.suffix(output, obj);1296      return output;1297    },1298    diffLimit: 512,1299    diff(actual, expected, output, diff, inspect) {1300      output.inline = false;1301      if (Math.max(actual.length, expected.length) > this.diffLimit) {1302        output.jsComment(`Diff suppressed due to size > ${this.diffLimit}`);1303      } else {1304        output1305          .stringDiff(this.hexDump(actual), this.hexDump(expected), {1306            type: 'Chars',1307            markUpSpecialCharacters: false,1308          })1309          // eslint-disable-next-line no-control-regex1310          .replaceText(/[\x00-\x1f\x7f-\xffââ]/g, '.')1311          .replaceText(/[â ]/g, function (styles, content) {1312            this.text(content);1313          });1314      }1315      return output;1316    },1317  });1318  [8, 16, 32].forEach(function (numBits) {1319    ['Int', 'Uint'].forEach((intOrUint) => {1320      const constructorName = `${intOrUint + numBits}Array`;1321      const Constructor = global[constructorName];1322      expect.addType({1323        name: constructorName,1324        base: 'binaryArray',1325        hexDumpWidth: 128 / numBits,1326        digitWidth: numBits / 4,1327        identify:1328          Constructor !== 'undefined' &&1329          function (obj) {1330            return obj instanceof Constructor;1331          },1332      });1333    }, this);1334  }, this);1335  expect.addType({1336    name: 'Buffer',1337    base: 'binaryArray',1338    identify: typeof Buffer === 'function' && Buffer.isBuffer,1339    prefix(output) {1340      return output.code(`Buffer.from([`, 'javascript');1341    },1342  });1343  expect.addType({1344    name: 'string',1345    identify(value) {1346      return typeof value === 'string';1347    },1348    inspect(value, depth, output) {1349      return output.singleQuotedString(value);1350    },1351    diffLimit: 65536,1352    diff(actual, expected, output, diff, inspect) {1353      if (Math.max(actual.length, expected.length) > this.diffLimit) {1354        output.jsComment(`Diff suppressed due to size > ${this.diffLimit}`);1355        return output;1356      }1357      output.stringDiff(actual, expected, {1358        type: 'WordsWithSpace',1359        markUpSpecialCharacters: true,1360      });1361      output.inline = false;1362      return output;1363    },1364  });1365  expect.addType({1366    name: 'number',1367    identify(value) {1368      return typeof value === 'number' && !isNaN(value);1369    },1370    inspect(value, depth, output) {1371      if (value === 0 && 1 / value === -Infinity) {1372        value = '-0';1373      } else {1374        value = String(value);1375      }1376      return output.jsNumber(String(value));1377    },1378  });1379  expect.addType({1380    name: 'NaN',1381    identify(value) {1382      return typeof value === 'number' && isNaN(value);1383    },1384    inspect(value, depth, output) {1385      return output.jsPrimitive(value);1386    },1387  });1388  expect.addType({1389    name: 'BigInt',1390    identify(value) {1391      return typeof value === 'bigint';1392    },1393    inspect(value, depth, output) {1394      return output.jsNumber(value.toString()).code('n', 'javascript');1395    },1396  });1397  expect.addType({1398    name: 'boolean',1399    identify(value) {1400      return typeof value === 'boolean';1401    },1402    inspect(value, depth, output) {1403      return output.jsPrimitive(value);1404    },1405  });1406  expect.addType({1407    name: 'undefined',1408    identify(value) {1409      return typeof value === 'undefined';1410    },1411    inspect(value, depth, output) {1412      return output.jsPrimitive(value);1413    },1414  });1415  expect.addType({1416    name: 'null',1417    identify(value) {1418      return value === null;1419    },1420    inspect(value, depth, output) {1421      return output.jsPrimitive(value);1422    },1423  });1424  expect.addType({1425    name: 'assertion',1426    identify(value) {1427      return value instanceof AssertionString;1428    },1429  });...

utils.js

Source:utils.js

...194          }195        }196        return target;197      },198  uniqueStringsAndSymbols(...args) {199    // [filterFn], item1, item2...200    let filterFn;201    if (typeof args[0] === 'function') {202      filterFn = args[0];203    }204    const index = {};205    const uniqueStringsAndSymbols = [];206    function visit(item) {207      if (Array.isArray(item)) {208        item.forEach(visit);209      } else if (210        !Object.prototype.hasOwnProperty.call(index, item) &&211        (!filterFn || filterFn(item))212      ) {213        index[item] = true;214        uniqueStringsAndSymbols.push(item);215      }216    }217    for (let i = filterFn ? 1 : 0; i < args.length; i += 1) {218      visit(args[i]);219    }220    return uniqueStringsAndSymbols;221  },222  uniqueNonNumericalStringsAndSymbols(...args) {223    // ...224    return utils.uniqueStringsAndSymbols(225      (stringOrSymbol) =>226        typeof stringOrSymbol === 'symbol' ||227        !utils.numericalRegExp.test(stringOrSymbol),228      Array.prototype.slice.call(args)229    );230  },231  forwardFlags(testDescriptionString, flags) {232    return testDescriptionString233      .replace(/\[(!?)([^\]]+)\] ?/g, (match, negate, flag) =>234        Boolean(flags[flag]) !== Boolean(negate) ? `${flag} ` : ''235      )236      .trim();237  },238  numericalRegExp: /^(?:0|[1-9][0-9]*)$/,...

Using AI Code Generation

1import { uniqueStringsAndSymbols } from 'unexpected-htmllike';2expect.addAssertion('<any> to have unique strings and symbols', function (expect, subject) {3    return expect(uniqueStringsAndSymbols(subject), 'to be empty');4});5import { uniqueStringsAndSymbols } from 'unexpected-htmllike';6expect.addAssertion('<any> to have unique strings and symbols', function (expect, subject) {7    return expect(uniqueStringsAndSymbols(subject), 'to be empty');8});9import { uniqueStringsAndSymbols } from 'unexpected-htmllike';10expect.addAssertion('<any> to have unique strings and symbols', function (expect, subject) {11    return expect(uniqueStringsAndSymbols(subject), 'to be empty');12});13import { uniqueStringsAndSymbols } from 'unexpected-htmllike';14expect.addAssertion('<any> to have unique strings and symbols', function (expect, subject) {15    return expect(uniqueStringsAndSymbols(subject), 'to be empty');16});17import { uniqueStringsAndSymbols } from 'unexpected-htmllike';18expect.addAssertion('<any> to have unique strings and symbols', function (expect, subject) {19    return expect(uniqueStringsAndSymbols(subject), 'to be empty');20});21import { uniqueStringsAndSymbols } from 'unexpected-htmllike';22expect.addAssertion('<any> to have unique strings and symbols', function (expect, subject) {23    return expect(uniqueStringsAndSymbols(subject

Using AI Code Generation

1const {uniqueStringsAndSymbols} = require('unexpected');2const unexpected = require('unexpected');3const unexpectedHtmllike = require('unexpected-htmllike');4const unexpectedDom = require('unexpected-dom');5const unexpectedSinon = require('unexpected-sinon');6const unexpectedReact = require('unexpected-react');7const unexpectedEnzyme = require('unexpected-enzyme');8const unexpectedResemble = require('unexpected-resemble');9const unexpectedMoment = require('unexpected-moment');10const unexpectedKnex = require('unexpected-knex');11const unexpectedCheck = require('unexpected-che

Using AI Code Generation

1const unexpected = require('unexpected');2const unexpectedHtmllike = require('unexpected-htmllike');3const expect = unexpected.clone().use(unexpectedHtmllike);4const unexpected = require('unexpected');5const unexpectedHtmllike = require('unexpected-htmllike');6const expect = unexpected.clone().use(unexpectedHtmllike);7const unexpected = require('unexpected');8const unexpectedHtmllike = require('unexpected-htmllike');9const expect = unexpected.clone().use(unexpectedHtmllike);10const unexpected = require('unexpected');11const unexpectedHtmllike = require('unexpected-htmllike');12const expect = unexpected.clone().use(unexpectedHtmllike);13const unexpected = require('unexpected');14const unexpectedHtmllike = require('unexpected-htmllike');15const expect = unexpected.clone().use(unexpectedHtmllike);16const unexpected = require('unexpected');17const unexpectedHtmllike = require('unexpected-htmllike');18const expect = unexpected.clone().use(unexpectedHtmllike);19const unexpected = require('unexpected');20const unexpectedHtmllike = require('unexpected-htmllike');21const expect = unexpected.clone().use(unexpectedHtmllike);22const unexpected = require('unexpected');23const unexpectedHtmllike = require('unexpected-htmllike');24const expect = unexpected.clone().use(unexpectedHtmllike);

Using AI Code Generation

1const { uniqueStringsAndSymbols } = require('unexpected');2const expect = require('unexpected').clone();3const unexpectedSet = require('unexpected-set');4expect.installPlugin(unexpectedSet);5const unexpectedSorted = require('unexpected-sorted');6expect.installPlugin(unexpectedSorted);7const unexpectedDom = require('unexpected-dom');8expect.installPlugin(unexpectedDom);9const unexpectedReact = require('unexpected-react');10expect.installPlugin(unexpectedReact);11const unexpectedMarkdown = require('unexpected-markdown');12expect.installPlugin(unexpectedMarkdown);13const unexpectedMoment = require('unexpected-moment');14expect.installPlugin(unexpectedMoment);15const unexpectedSinon = require('unexpected-sinon');16expect.installPlugin(unexpectedSinon);17const unexpectedHtmlLike = require('unexpected-htmllike');18expect.installPlugin(unexpectedHtmlLike);19const unexpectedRedux = require('unexpected-redux');20expect.installPlugin(unexpectedRedux);21const unexpectedImmutable = require('unexpected-immutable');22expect.installPlugin(unexpectedImmutable);23const unexpectedEventEmitter = require('unexpected-eventemitter');24expect.installPlugin(unexpectedEventEmitter);25const unexpectedKnockout = require('unexpected-knockout');26expect.installPlugin(unexpectedKnockout);27const unexpectedJquery = require('unexpected-jquery');28expect.installPlugin(unexpectedJquery);29const unexpectedMithril = require('unexpected-mithril');30expect.installPlugin(unexpectedMithril);31const unexpectedRamda = require('unexpected-ramda');32expect.installPlugin(unexpectedRamda);33const unexpectedRx = require('unexpected-rx');34expect.installPlugin(unexpectedRx);

Using AI Code Generation

1const unexpectedString = require('unexpected-string');2const str = "This is a string";3const result = unexpectedString.uniqueStringsAndSymbols(str);4console.log(result);5const unexpectedString = require('unexpected-string');6const str = "This is a string";7const result = unexpectedString.uniqueStringsAndSymbols(str);8console.log(result);9const unexpectedString = require('unexpected-string');10const str = "This is a string";11const result = unexpectedString.uniqueStringsAndSymbols(str);12console.log(result);13const unexpectedString = require('unexpected-string');14const str = "This is a string";15const result = unexpectedString.uniqueStringsAndSymbols(str);16console.log(result);17const unexpectedString = require('unexpected-string');18const str = "This is a string";19const result = unexpectedString.uniqueStringsAndSymbols(str);20console.log(result);21const unexpectedString = require('unexpected-string');22const str = "This is a string";23const result = unexpectedString.uniqueStringsAndSymbols(str);24console.log(result);25const unexpectedString = require('unexpected-string');26const str = "This is a string";27const result = unexpectedString.uniqueStringsAndSymbols(str);28console.log(result);29const unexpectedString = require('unexpected-string');30const str = "This is a string";31const result = unexpectedString.uniqueStringsAndSymbols(str);32console.log(result);33const unexpectedString = require('unexpected-string');34const str = "This is a string";35const result = unexpectedString.uniqueStringsAndSymbols(str);36console.log(result);37const unexpectedString = require('unexpected-string');38const str = "This is a string";39const result = unexpectedString.uniqueStringsAndSymbols(str);40console.log(result);41const unexpectedString = require('unexpected-string');42const str = "This is a string";

Using AI Code Generation

1const { uniqueStringsAndSymbols } = require('unexpected');2describe('uniqueStringsAndSymbols', () => {3  it('should return true for a unique string', () => {4    expect(uniqueStringsAndSymbols('unique'), 'to be true');5  });6  it('should return false for a non unique string', () => {7    expect(uniqueStringsAndSymbols('nonunique'), 'to be false');8  });9});10const { uniqueStringsAndSymbols } = require('unexpected');11describe('uniqueStringsAndSymbols', () => {12  it('should return true for a unique string', () => {13    expect(uniqueStringsAndSymbols('unique'), 'to be true');14  });15  it('should return false for a non unique string', () => {16    expect(uniqueStringsAndSymbols('nonunique'), 'to be false');17  });18});19const { uniqueStringsAndSymbols } = require('unexpected');20describe('uniqueStringsAndSymbols', () => {21  it('should return true for a unique string', () => {22    expect(uniqueStringsAndSymbols('unique'), 'to be true');23  });24  it('should return false for a non unique string', () => {25    expect(uniqueStringsAndSymbols('nonunique'), 'to be false');26  });27});28const { uniqueStringsAndSymbols } = require('unexpected');29describe('uniqueStringsAndSymbols', () => {30  it('should return true for a unique string', () => {31    expect(uniqueStringsAndSymbols('unique'), 'to be true');32  });33  it('should return false for a non unique string', () => {34    expect(uniqueStringsAndSymbols('nonunique'), 'to be false');35  });36});37const { uniqueStringsAndSymbols } = require('unexpected');38describe('uniqueStringsAndSymbols', () => {39  it('should return true for a unique string', () => {40    expect(uniqueStringsAnd

Using AI Code Generation

1const { expect, createSpy, restoreSpies } = require('unexpected');2const unexpectedString = require('unexpected-string');3const unexpected = expect.clone().use(unexpectedString);4const testString = 'Hello World!';5unexpected(testString, 'to have unique strings and symbols');6unexpected(testString, 'not to have unique strings and symbols');7const spy = createSpy(() => {});8spy(testString);9unexpected(spy, 'was called with', 'to have unique strings and symbols');10restoreSpies();11const { expect, createSpy, restoreSpies } = require('unexpected');12const unexpectedString = require('unexpected-string');13const unexpected = expect.clone().use(unexpectedString);14const testString = 'Hello World!';15unexpected(testString, 'to have unique strings and symbols');16unexpected(testString, 'not to have unique strings and symbols');17const spy = createSpy(() => {});18spy(testString);19unexpected(spy, 'was called with', 'to have unique strings and symbols');20restoreSpies();21const { expect, createSpy, restoreSpies } = require('unexpected');22const unexpectedString = require('unexpected-string');23const unexpected = expect.clone().use(unexpectedString);24const testString = 'Hello World!';25unexpected(testString, 'to have unique strings and symbols');26unexpected(testString, 'not to have unique strings and symbols');27const spy = createSpy(() => {});28spy(testString);29unexpected(spy, 'was called with', 'to have unique strings and symbols');30restoreSpies();

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.