How to use spyInteger method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

float.spec.ts

Source:float.spec.ts

...41  it('should accept any valid range of 32-bit floating point numbers (including infinity)', () => {42    fc.assert(43      fc.property(floatConstraints(), (ct) => {44        // Arrange45        spyInteger();46        // Act47        const arb = float(ct);48        // Assert49        expect(arb).toBeDefined();50      })51    );52  });53  it('should accept any constraits defining min (32-bit float not-NaN) equal to max', () => {54    fc.assert(55      fc.property(56        float32raw(),57        fc.record({ noDefaultInfinity: fc.boolean(), noNaN: fc.boolean() }, { withDeletedKeys: true }),58        (f, otherCt) => {59          // Arrange60          fc.pre(isNotNaN32bits(f));61          spyInteger();62          // Act63          const arb = float({ ...otherCt, min: f, max: f });64          // Assert65          expect(arb).toBeDefined();66        }67      )68    );69  });70  it('should reject non-32-bit or NaN floating point numbers if specified for min', () => {71    fc.assert(72      fc.property(float64raw(), (f64) => {73        // Arrange74        fc.pre(!isNotNaN32bits(f64));75        const integer = spyInteger();76        // Act / Assert77        expect(() => float({ min: f64 })).toThrowError();78        expect(integer).not.toHaveBeenCalled();79      })80    );81  });82  it('should reject non-32-bit or NaN floating point numbers if specified for max', () => {83    fc.assert(84      fc.property(float64raw(), (f64) => {85        // Arrange86        fc.pre(!isNotNaN32bits(f64));87        const integer = spyInteger();88        // Act / Assert89        expect(() => float({ max: f64 })).toThrowError();90        expect(integer).not.toHaveBeenCalled();91      })92    );93  });94  it('should reject if specified min is strictly greater than max', () => {95    fc.assert(96      fc.property(float32raw(), float32raw(), (fa32, fb32) => {97        // Arrange98        fc.pre(isNotNaN32bits(fa32));99        fc.pre(isNotNaN32bits(fb32));100        fc.pre(!Object.is(fa32, fb32)); // Object.is can distinguish -0 from 0, while !== cannot101        const integer = spyInteger();102        const min = isStrictlySmaller(fa32, fb32) ? fb32 : fa32;103        const max = isStrictlySmaller(fa32, fb32) ? fa32 : fb32;104        // Act / Assert105        expect(() => float({ min, max })).toThrowError();106        expect(integer).not.toHaveBeenCalled();107      })108    );109  });110  it('should reject impossible noDefaultInfinity-based ranges', () => {111    // Arrange112    const integer = spyInteger();113    // Act / Assert114    expect(() => float({ min: Number.POSITIVE_INFINITY, noDefaultInfinity: true })).toThrowError();115    expect(() => float({ max: Number.NEGATIVE_INFINITY, noDefaultInfinity: true })).toThrowError();116    expect(integer).not.toHaveBeenCalled();117  });118  it('should properly convert integer value for index between min and max into its associated float value', () =>119    fc.assert(120      fc.property(121        fc.option(floatConstraints(), { nil: undefined }),122        fc.maxSafeNat(),123        fc.option(fc.integer({ min: 2 }), { nil: undefined }),124        (ct, mod, biasFactor) => {125          // Arrange126          const { instance: mrng } = fakeRandom();127          const { min, max } = minMaxForConstraints(ct || {});128          const minIndex = floatToIndex(min);129          const maxIndex = floatToIndex(max);130          const arbitraryGeneratedIndex = (mod % (maxIndex - minIndex + 1)) + minIndex;131          spyIntegerWithValue(() => arbitraryGeneratedIndex);132          // Act133          const arb = float(ct);134          const { value_: f } = arb.generate(mrng, biasFactor);135          // Assert136          expect(f).toBe(indexToFloat(arbitraryGeneratedIndex));137        }138      )139    ));140  describe('with NaN', () => {141    const withNaNRecordConstraints = { ...defaultFloatRecordConstraints, noNaN: fc.constant(false) };142    it('should ask for a range with one extra value (far from zero)', () => {143      fc.assert(144        fc.property(floatConstraints(withNaNRecordConstraints), (ct) => {145          // Arrange146          const { max } = minMaxForConstraints(ct);147          const integer = spyInteger();148          // Act149          float({ ...ct, noNaN: true });150          float(ct);151          // Assert152          expect(integer).toHaveBeenCalledTimes(2);153          const integerConstraintsNoNaN = integer.mock.calls[0][0]!;154          const integerConstraintsWithNaN = integer.mock.calls[1][0]!;155          if (max > 0) {156            // max > 0  --> NaN will be added as the greatest value157            expect(integerConstraintsWithNaN.min).toBe(integerConstraintsNoNaN.min);158            expect(integerConstraintsWithNaN.max).toBe(integerConstraintsNoNaN.max! + 1);159          } else {160            // max <= 0 --> NaN will be added as the smallest value161            expect(integerConstraintsWithNaN.min).toBe(integerConstraintsNoNaN.min! - 1);162            expect(integerConstraintsWithNaN.max).toBe(integerConstraintsNoNaN.max);163          }164        })165      );166    });167    it('should properly convert the extra value to NaN', () =>168      fc.assert(169        fc.property(170          floatConstraints(withNaNRecordConstraints),171          fc.option(fc.integer({ min: 2 }), { nil: undefined }),172          (ct, biasFactor) => {173            // Arrange174            // Setup mocks for integer175            const { instance: mrng } = fakeRandom();176            const arbitraryGenerated = { value: Number.NaN };177            const integer = spyIntegerWithValue(() => arbitraryGenerated.value);178            // Call float next to find out the value required for NaN179            float({ ...ct, noNaN: true });180            const arb = float(ct);181            // Extract NaN "index"182            const { min: minNonNaN } = integer.mock.calls[0][0]!;183            const { min: minNaN, max: maxNaN } = integer.mock.calls[1][0]!;184            const indexForNaN = minNonNaN !== minNaN ? minNaN : maxNaN;185            if (indexForNaN === undefined) throw new Error('No value available for NaN');186            arbitraryGenerated.value = indexForNaN;187            // Act188            const { value_: f } = arb.generate(mrng, biasFactor);189            // Assert190            expect(f).toBe(Number.NaN);191          }192        )193      ));194  });195  describe('without NaN', () => {196    // eslint-disable-next-line @typescript-eslint/no-unused-vars197    const { noNaN, ...noNaNRecordConstraints } = defaultFloatRecordConstraints;198    it('should ask integers between the indexes corresponding to min and max', () => {199      fc.assert(200        fc.property(floatConstraints(noNaNRecordConstraints), (ctDraft) => {201          // Arrange202          const ct = { ...ctDraft, noNaN: true };203          const integer = spyInteger();204          const { min, max } = minMaxForConstraints(ct);205          const minIndex = floatToIndex(min);206          const maxIndex = floatToIndex(max);207          // Act208          float(ct);209          // Assert210          expect(integer).toHaveBeenCalledTimes(1);211          expect(integer).toHaveBeenCalledWith({ min: minIndex, max: maxIndex });212        })213      );214    });215  });216});217describe('float (integration)', () => {218  type Extra = FloatConstraints | undefined;219  const extraParameters: fc.Arbitrary<Extra> = fc.option(floatConstraints(), { nil: undefined });220  const isCorrect = (v: number, extra: Extra) => {221    expect(typeof v).toBe('number'); // should always produce numbers222    expect(is32bits(v)).toBe(true); // should always produce 32-bit floats223    if (extra === undefined) {224      return; // no other constraints225    }226    if (extra.noNaN) {227      expect(v).not.toBe(Number.NaN); // should not produce NaN if explicitely asked not too228    }229    if (extra.min !== undefined && !Number.isNaN(v)) {230      expect(v).toBeGreaterThanOrEqual(extra.min); // should always be greater than min when specified231    }232    if (extra.max !== undefined && !Number.isNaN(v)) {233      expect(v).toBeLessThanOrEqual(extra.max); // should always be smaller than max when specified234    }235    if (extra.noDefaultInfinity) {236      if (extra.min === undefined) {237        expect(v).not.toBe(Number.NEGATIVE_INFINITY); // should not produce -infinity when noInfinity and min unset238      }239      if (extra.max === undefined) {240        expect(v).not.toBe(Number.POSITIVE_INFINITY); // should not produce +infinity when noInfinity and max unset241      }242    }243  };244  const isStrictlySmaller = (fa: number, fb: number) =>245    Math.abs(fa) < Math.abs(fb) || //              Case 1: abs(a) < abs(b)246    (Object.is(fa, +0) && Object.is(fb, -0)) || // Case 2: +0 < -0  --> we shrink from -0 to +0247    (!Number.isNaN(fa) && Number.isNaN(fb)); //    Case 3: notNaN < NaN, NaN is one of the extreme values248  const floatBuilder = (extra: Extra) => float(extra);249  it('should produce the same values given the same seed', () => {250    assertProduceSameValueGivenSameSeed(floatBuilder, { extraParameters });251  });252  it('should only produce correct values', () => {253    assertProduceCorrectValues(floatBuilder, isCorrect, { extraParameters });254  });255  it('should produce values seen as shrinkable without any context', () => {256    assertProduceValuesShrinkableWithoutContext(floatBuilder, { extraParameters });257  });258  it('should be able to shrink to the same values without initial context', () => {259    assertShrinkProducesSameValueWithoutInitialContext(floatBuilder, { extraParameters });260  });261  it('should preserve strictly smaller ordering in shrink', () => {262    assertShrinkProducesStrictlySmallerValue(floatBuilder, isStrictlySmaller, { extraParameters });263  });264});265// Helpers266function spyInteger() {267  const { instance, map } = fakeArbitrary<number>();268  const { instance: mappedInstance } = fakeArbitrary();269  const integer = jest.spyOn(IntegerMock, 'integer');270  integer.mockReturnValue(instance);271  map.mockReturnValue(mappedInstance);272  return integer;273}274function spyIntegerWithValue(value: () => number) {275  const { instance } = fakeArbitraryStaticValue<number>(value);276  const integer = jest.spyOn(IntegerMock, 'integer');277  integer.mockReturnValue(instance);278  return integer;...

Using AI Code Generation

1const { spyInteger } = require('fast-check-monorepo');2spyInteger();3const { spyInteger } = require('fast-check-monorepo');4spyInteger();5const { spyInteger } = require('fast-check-monorepo');6spyInteger();7const { spyInteger } = require('fast-check-monorepo');8spyInteger();9const { spyInteger } = require('fast-check-monorepo');10spyInteger();11const { spyInteger } = require('fast-check-monorepo');12spyInteger();13const { spyInteger } = require('fast-check-monorepo');14spyInteger();15const { spyInteger } = require('fast-check-monorepo');16spyInteger();17const { spyInteger } = require('fast-check-monorepo');18spyInteger();19const { spyInteger } = require('fast-check-monorepo');20spyInteger();21const { spyInteger } = require('fast-check-monorepo');22spyInteger();23const { spyInteger } = require('fast-check-monorepo');24spyInteger();25const { spyInteger } = require('fast-check-monorepo');26spyInteger();27const { spyInteger } = require('fast-check-monorepo');28spyInteger();

Using AI Code Generation

1import { spyInteger } from 'fast-check-monorepo';2spyInteger(10, 20);3{4 "dependencies": {5 }6}

Using AI Code Generation

1import { spyInteger } from 'fast-check-monorepo/spyInteger';2import { spyString } from 'fast-check-monorepo/spyString';3describe('Spy', () => {4  it('should spy on integer', () => {5    const spy = spyInteger();6    expect(spy).toHaveProperty('integer');7  });8  it('should spy on string', () => {9    const spy = spyString();10    expect(spy).toHaveProperty('string');11  });12});13import { spyInteger } from 'fast-check-monorepo/spyInteger';14const spy = spyInteger();15console.log(spy.integer);16I am trying to use the spyInteger() method. I am getting the following error:17import { spyInteger } from 'fast-check-monorepo/spyInteger';18const spy = spyInteger();19spy.integer();20I am trying to use the spyInteger() method. I am getting the following error:21import { spyInteger } from 'fast-check-monorepo/spyInteger';22const spy = spyInteger();23spy.integer();24I am trying to use the spyInteger() method. I am getting the following error:25import { spyInteger } from 'fast-check-monorepo/spyInteger';26const spy = spyInteger();27spy.integer();28I am trying to use the spyInteger()

Using AI Code Generation

1const spyInteger = require('fast-check-monorepo').spyInteger;2describe('spyInteger method', () => {3  it('should return 1', () => {4    const result = spyInteger(1);5    expect(result).toEqual(1);6  });7});8{9  "scripts": {10  },11  "dependencies": {12  },13  "devDependencies": {14  }15}16const spyInteger = (value) => {17  return value;18}19module.exports = {20};21    >  2 | const spyInteger = require('fast-check-monorepo').spyInteger;22       5 | describe('spyInteger method', () => {23      at Resolver.resolveModule (node_modules/jest-resolve/build/index.js:221:17)24      at Object.<anonymous> (test.js:2:18)25module.exports = {26};

Using AI Code Generation

1import { spyInteger } from 'fast-check-monorepo'2describe('test', () => {3    it('should', () => {4        spyInteger()5    })6})7lerna ERR!     at Object.mkdirSync (fs.js:757:3)8lerna ERR!     at Function.sync (/usr/local/lib/node_modules/lerna/node_modules/make-dir/index.js:88:11)9lerna ERR!     at Function.sync (/usr/local/lib/node_modules/lerna/node_modules/make-dir/index.js:108:17)10lerna ERR!     at Function.sync (/usr/local/lib/node_modules/lerna/node_modules/make-dir/index.js:108:17)11lerna ERR!     at Function.sync (/usr/local/lib/node_modules/lerna/node_modules/make-dir/index.js:108:17)12lerna ERR!     at Function.sync (/usr/local/lib/node_modules/lerna/node_modules/make-dir/index.js:108:17)13lerna ERR!     at Function.sync (/usr/local/lib/node_modules/lerna/node_modules/make-dir/index.js:108:17)14lerna ERR!     at Function.sync (/usr/local/lib/node_modules/lerna/node_modules/make-dir/index.js:108:17)15lerna ERR!     at Function.sync (/usr/local/lib/node_modules/lerna/node_modules/make-dir/index.js:108:17)16lerna ERR!     at Function.sync (/usr/local/lib/node_modules/lerna/node_modules/make-dir/index.js:108:17)17lerna ERR!  { Error: EEXIST: file already exists, mkdir 'fast-check-monorepo'

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