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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