How to use patternsToStringUnmapperFor method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

PatternsToString.spec.ts

Source:PatternsToString.spec.ts Github

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...30 const sourceChunksSet = new Set(sourceChunks);31 const { instance, canShrinkWithoutContext } = fakeArbitrary<string>();32 canShrinkWithoutContext.mockImplementation((value) => sourceChunksSet.has(value as string));33 // Act34 const unmapper = patternsToStringUnmapperFor(instance, constraints);35 const chunks = unmapper(source);36 // Assert37 expect(chunks).toEqual(expectedChunks);38 }39 );40 it.each`41 sourceChunks | source | constraints42 ${['a', 'b', 'c']} | ${'abcd'} | ${{}}43 ${['ab', 'aaa']} | ${'abaaa'} | ${{ minLength: 3 }}44 ${['a']} | ${'aaaaa'} | ${{ maxLength: 4 }}45 `('should throw when string cannot be split into chunks ($constraints)', ({ sourceChunks, source, constraints }) => {46 // Arrange47 const sourceChunksSet = new Set(sourceChunks);48 const { instance, canShrinkWithoutContext } = fakeArbitrary<string>();49 canShrinkWithoutContext.mockImplementation((value) => sourceChunksSet.has(value as string));50 // Act / Assert51 const unmapper = patternsToStringUnmapperFor(instance, constraints);52 expect(() => unmapper(source)).toThrowError();53 });54 it('should be able to split strings built out of chunks into chunks', () =>55 fc.assert(56 fc.property(57 // Defining chunks, we allow "" to be part of the chunks as we do not request any minimal length for the 'split into chunks'58 fc.array(fc.fullUnicodeString(), { minLength: 1 }),59 // Array of random natural numbers to help building the source string60 fc.array(fc.nat()),61 (sourceChunks, sourceMods) => {62 // Arrange63 const sourceChunksSet = new Set(sourceChunks);64 const { instance, canShrinkWithoutContext } = fakeArbitrary<string>();65 canShrinkWithoutContext.mockImplementation((value) => sourceChunksSet.has(value as string));66 const source = sourceMods.map((mod) => sourceChunks[mod % sourceChunks.length]).join('');67 // Act68 const unmapper = patternsToStringUnmapperFor(instance, {});69 const chunks = unmapper(source);70 // Assert71 expect(chunks.join('')).toBe(source);72 // Remark: Found chunks may differ from the one we used to build the source73 // For instance:74 // > sourceChunks = ["ToTo", "To"]75 // > sourceMods = [0]76 // > chunks might be ["To", "To"] or ["ToTo"] and both are valid ones77 }78 )79 ));80 it('should be able to split strings built out of chunks into chunks while respecting constraints in size', () =>81 fc.assert(82 fc.property(83 fc.array(fc.fullUnicodeString({ minLength: 1 }), { minLength: 1 }),84 fc.array(fc.nat()),85 fc.nat(),86 fc.nat(),87 (sourceChunks, sourceMods, constraintsMinOffset, constraintsMaxOffset) => {88 // Arrange89 const sourceChunksSet = new Set(sourceChunks);90 const { instance, canShrinkWithoutContext } = fakeArbitrary<string>();91 canShrinkWithoutContext.mockImplementation((value) => sourceChunksSet.has(value as string));92 const source = sourceMods.map((mod) => sourceChunks[mod % sourceChunks.length]).join('');93 const constraints = {94 minLength: Math.max(0, sourceMods.length - constraintsMinOffset),95 maxLength: sourceMods.length + constraintsMaxOffset,96 };97 // Act98 const unmapper = patternsToStringUnmapperFor(instance, constraints);99 const chunks = unmapper(source);100 // Assert101 expect(chunks.join('')).toBe(source);102 expect(chunks.length).toBeGreaterThanOrEqual(constraints.minLength);103 expect(chunks.length).toBeLessThanOrEqual(constraints.maxLength);104 }105 )106 ));...

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PatternsToString.ts

Source:PatternsToString.ts Github

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...6export function patternsToStringMapper(tab: string[]): string {7 return safeJoin(tab, '');8}9/** @internal */10export function patternsToStringUnmapperFor(11 patternsArb: Arbitrary<string>,12 constraints: StringSharedConstraints13): (value: unknown) => string[] {14 return function patternsToStringUnmapper(value: unknown): string[] {15 // First match wins! Possibly not the best match.16 // Empty strings are not considered as valid chunks.17 // Example:18 // > Size limit (not known here) is [min: 0, max: 2], we want to revert "abc" and both ["a","b","c"] and ["ab", "c"] are possible.19 // > Unmap to ["a", "b", "c"] while not in [min: 0, max: 2].20 if (typeof value !== 'string') {21 throw new Error('Unsupported value');22 }23 const minLength = constraints.minLength !== undefined ? constraints.minLength : 0;24 const maxLength = constraints.maxLength !== undefined ? constraints.maxLength : MaxLengthUpperBound;...

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stringOf.ts

Source:stringOf.ts Github

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...14 * @remarks Since 1.1.315 * @public16 */17export function stringOf(charArb: Arbitrary<string>, constraints: StringSharedConstraints = {}): Arbitrary<string> {18 const unmapper = patternsToStringUnmapperFor(charArb, constraints);19 const experimentalCustomSlices = createSlicesForString(charArb, unmapper);20 // TODO - Move back to object spreading as soon as we bump support from es2017 to es2018+21 const enrichedConstraints: ArrayConstraintsInternal<string> = safeObjectAssign(safeObjectAssign({}, constraints), {22 experimentalCustomSlices,23 });24 return array(charArb, enrichedConstraints).map(patternsToStringMapper, unmapper);...

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Using AI Code Generation

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1const fc = require('fast-check');2const { patternsToStringUnmapperFor } = require('fast-check-monorepo');3 { pattern: '1', values: [1] },4 { pattern: '2', values: [2] },5 { pattern: '3', values: [3] },6 { pattern: '4', values: [4] },7 { pattern: '5', values: [5] },8 { pattern: '6', values: [6] },9 { pattern: '7', values: [7] },10 { pattern: '8', values: [8] },11 { pattern: '9', values: [9] },12 { pattern: '10', values: [10] },13 { pattern: '11', values: [11] },14 { pattern: '12', values: [12] },15 { pattern: '13', values: [13] },16 { pattern: '14', values: [14] },17 { pattern: '15', values: [15] },18 { pattern: '16', values: [16] },19 { pattern: '17', values: [17] },20 { pattern: '18', values: [18] },21 { pattern: '19', values: [19] },22 { pattern: '20', values: [20] },23 { pattern: '21', values: [21] },24 { pattern: '22', values: [22] },25 { pattern: '23', values: [23] },26 { pattern: '24', values: [24] },27 { pattern: '25', values: [25] },28 { pattern: '26', values: [26] },29 { pattern: '27', values: [27] },30 { pattern: '28', values: [28] },31 { pattern: '29', values: [29] },32 { pattern: '30', values: [30] },33 { pattern: '31', values: [31] },34 { pattern: '32', values: [32] },35 { pattern: '33', values: [33] },36 { pattern: '34', values: [34]

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Using AI Code Generation

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1const fc = require('fast-check');2const { patternsToStringUnmapperFor } = require('fast-check-monorepo');3 '(',4 ';',5 '{',6 '}',

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Using AI Code Generation

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1const fc = require("fast-check");2const { patternsToStringUnmapperFor } = require("fast-check-monorepo");3 { type: "literal", value: "a" },4 { type: "any" },5 { type: "literal", value: "b" },6 { type: "any" },7 { type: "literal", value: "c" },8 { type: "any" },9 { type: "literal", value: "d" },10 { type: "any" },11 { type: "literal", value: "e" },12 { type: "any" },13 { type: "literal", value: "f" },14 { type: "any" },15 { type: "literal", value: "g" },16 { type: "any" },17 { type: "literal", value: "h" },18 { type: "any" },19 { type: "literal", value: "i" },20 { type: "any" },21 { type: "literal", value: "j" },22 { type: "any" },23 { type: "literal", value: "k" },24 { type: "any" },25 { type: "literal", value: "l" },26 { type: "any" },27 { type: "literal", value: "m" },28 { type: "any" },29 { type: "literal", value: "n" },30 { type: "any" },31 { type: "literal", value: "o" },32 { type: "any" },33 { type: "literal", value: "p" },34 { type: "any" },35 { type: "literal", value: "q" },36 { type: "any" },37 { type: "literal", value: "r" },38 { type: "any" },39 { type: "literal", value: "s" },40 { type: "any" },41 { type: "literal", value: "t" },42 { type: "any" },43 { type: "literal", value: "u" },44 { type: "any" },45 { type: "literal", value: "v" },46 { type: "any" },47 { type: "literal",

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Using AI Code Generation

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1const fc = require('fast-check');2const { patternsToStringUnmapperFor } = require('fast-check/lib/arbitrary/_internals/mappers/PatternsToStringUnmapper');3 { type: 'literal', value: 'a' },4 { type: 'literal', value: 'b' },5 { type: 'literal', value: 'c' },6 { type: 'literal', value: 'd' },7 { type: 'literal', value: 'e' },8 { type: 'literal', value: 'f' },9 { type: 'literal', value: 'g' },10 { type: 'literal', value: 'h' },11 { type: 'literal', value: 'i' },12 { type: 'literal', value: 'j' },13 { type: 'literal', value: 'k' },14 { type: 'literal', value: 'l' },15 { type: 'literal', value: 'm' },16 { type: 'literal', value: 'n' },17 { type: 'literal', value: 'o' },18 { type: 'literal', value: 'p' },19 { type: 'literal', value: 'q' },20 { type: 'literal', value: 'r' },21 { type: 'literal', value: 's' },22 { type: 'literal', value: 't' },23 { type: 'literal', value: 'u' },24 { type: 'literal', value: 'v' },25 { type: 'literal', value: 'w' },26 { type: 'literal', value: 'x' },27 { type: 'literal', value: 'y' },28 { type: 'literal', value: 'z' },29 { type: 'literal', value: 'A' },30 { type: 'literal', value: 'B' },31 { type: 'literal', value: 'C' },32 { type: 'literal', value: 'D' },33 { type: 'literal', value: 'E' },34 { type: 'literal', value: 'F' },35 { type: 'literal', value: 'G' },36 { type: 'literal', value: 'H' },37 { type: 'literal', value: 'I' },38 { type:

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Using AI Code Generation

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1const fc = require("fast-check");2const { patternsToStringUnmapperFor } = require("fast-check-monorepo");3 {4 unmapper: (s) => s.replace("a", "b"),5 },6 {7 unmapper: (s) => s.replace("b", "c"),8 },9 {10 unmapper: (s) => s.replace("c", "d"),11 },12 {13 unmapper: (s) => s.replace("d", "e"),14 },15 {16 unmapper: (s) => s.replace("e", "f"),17 },18 {19 unmapper: (s) => s.replace("f", "g"),20 },21 {22 unmapper: (s) => s.replace("g", "h"),23 },24 {25 unmapper: (s) => s.replace("h", "i"),26 },27 {28 unmapper: (s) => s.replace("i", "j"),29 },30 {31 unmapper: (s) => s.replace("j", "k"),32 },33 {34 unmapper: (s) => s.replace("k", "l"),35 },36 {37 unmapper: (s) => s.replace("l", "m"),38 },39 {40 unmapper: (s) => s.replace("m", "n"),41 },42 {43 unmapper: (s) => s.replace("n", "o"),44 },45 {46 unmapper: (s) => s.replace("o", "p"),47 },48 {49 unmapper: (s) => s.replace("p", "q"),50 },51 {52 unmapper: (s) => s.replace("q", "r"),53 },54 {55 unmapper: (s) => s.replace("r", "s"),56 },

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Using AI Code Generation

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1import { patternsToStringUnmapperFor } from "@dubzzz/fast-check";2import { pattern } from "@dubzzz/fast-check";3const patterns = {4 a: pattern.anyValue(),5 b: pattern.anyValue(),6 c: pattern.anyValue(),7 d: pattern.anyValue(),8 e: pattern.anyValue(),9 f: pattern.anyValue(),10 g: pattern.anyValue(),11 h: pattern.anyValue(),12 i: pattern.anyValue(),13 j: pattern.anyValue(),14 k: pattern.anyValue(),15 l: pattern.anyValue(),16 m: pattern.anyValue(),17 n: pattern.anyValue(),18 o: pattern.anyValue(),19 p: pattern.anyValue(),20 q: pattern.anyValue(),21 r: pattern.anyValue(),22 s: pattern.anyValue(),23 t: pattern.anyValue(),24 u: pattern.anyValue(),25 v: pattern.anyValue(),26 w: pattern.anyValue(),27 x: pattern.anyValue(),28 y: pattern.anyValue(),29 z: pattern.anyValue(),30};31const unmapper = patternsToStringUnmapperFor(patterns);32const obj = {33};34console.log(unmapper(obj));

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