KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

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'

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.