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How to use assertProduceCorrectValues method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

func.spec.ts

Source:func.spec.ts

...41      },42    });43  });44  it('should return the same value given the same input', () => {45    assertProduceCorrectValues(46      funcBuilder,47      (f, { call, noiseCallsA, noiseCallsB }) => {48        for (const args of noiseCallsA) {49          f(...args);50        }51        const out = f(...call);52        for (const args of noiseCallsB) {53          f(...args);54        }55        expect(f(...call)).toBe(out);56      },57      {58        extraParameters: fc.record({59          call: fc.array(fc.anything()),60          noiseCallsA: fc.array(fc.array(fc.anything())),61          noiseCallsB: fc.array(fc.array(fc.anything())),62        }),63      }64    );65  });66  it('should give a re-usable string representation of the function', () => {67    assertProduceCorrectValues(funcBuilder, (f, calls) => assertToStringIsSameFunction(f, calls), {68      extraParameters: fc.array(fc.array(fc.anything())),69    });70  });71  it('should produce cloneable instances with independant histories', () => {72    assertProduceCorrectValues(73      funcBuilder,74      (f, calls) => {75        for (const args of calls) {76          f(...args);77        }78        expect(String(f)).toBe(String(f)); // calling toString does not alter the output79        expect(hasCloneMethod(f)).toBe(true); // f should be cloneable80        const clonedF = cloneIfNeeded(f);81        expect(String(clonedF)).not.toBe(String(f)); // f has been called with inputs, clonedF has not yet!82        for (const args of calls) {83          clonedF(...args);84        }85        expect(String(clonedF)).toBe(String(f)); // both called with same inputs in the same order86      },87      { extraParameters: fc.array(fc.array(fc.anything()), { minLength: 1 }) }88    );89  });90  it('should only clone produced values if they implement [fc.cloneMethod]', () => {91    class CloneableArbitrary extends Arbitrary<number[]> {92      private instance(value: number, cloneable: boolean) {93        if (!cloneable) return [value, 0];94        return Object.defineProperty([value, 1], cloneMethod, { value: () => this.instance(value, cloneable) });95      }96      generate(mrng: Random): Value<number[]> {97        return new Value(this.instance(mrng.nextInt(), mrng.nextBoolean()), { shrunkOnce: false });98      }99      canShrinkWithoutContext(_value: unknown): _value is number[] {100        throw new Error('No call expected in that scenario');101      }102      shrink(value: number[], context?: unknown): Stream<Value<number[]>> {103        const safeContext = context as { shrunkOnce: boolean };104        if (safeContext.shrunkOnce) {105          return Stream.nil();106        }107        return Stream.of(new Value(this.instance(0, value[1] === 1), { shrunkOnce: true }));108      }109    }110    assertProduceCorrectValues(111      () => func(new CloneableArbitrary()),112      (f, args) => {113        const out1 = f(...args);114        const out2 = f(...args);115        expect(out2).toEqual(out1);116        const cloneable = out1[1] === 1;117        if (!cloneable) {118          expect(out2).toBe(out1);119        } else {120          expect(out2).not.toBe(out1);121        }122        expect(hasCloneMethod(out1)).toBe(cloneable);123        expect(hasCloneMethod(out2)).toBe(cloneable);124      },...

compareBooleanFunc.spec.ts

Source:compareBooleanFunc.spec.ts

...20      },21    });22  });23  it('should be transitive', () => {24    assertProduceCorrectValues(25      compareBooleanFuncBuilder,26      (f, [a, b, c]) => {27        const ab = f(a, b);28        const bc = f(b, c);29        if (ab && bc) expect(f(a, c)).toBe(true);30        else if (!ab && !bc) expect(f(a, c)).toBe(false);31        // else: neither handled, nor skipped (yet)32      },33      { extraParameters: fc.tuple(fc.anything(), fc.anything(), fc.anything()) }34    );35  });36  it('should be false when a = b', () => {37    assertProduceCorrectValues(38      compareBooleanFuncBuilder,39      (f, a) => {40        expect(f(a, a)).toBe(false);41      },42      { extraParameters: fc.anything() }43    );44  });45  it('should be equivalent to compareFunc(a, b) < 0', () => {46    assertGenerateEquivalentTo(47      () => compareBooleanFunc(),48      () => compareFunc().map((f) => (a, b) => f(a, b) < 0),49      {50        isEqual: (f, refF, [a, b]) => f(a, b) === refF(a, b),51        extraParameters: fc.tuple(fc.anything(), fc.anything()),52      }53    );54  });55  it('should give a re-usable string representation of the function', () => {56    assertProduceCorrectValues(compareBooleanFuncBuilder, (f, calls) => assertToStringIsSameFunction(f, calls), {57      extraParameters: fc.array(fc.tuple(fc.anything(), fc.anything())),58    });59  });60  it('should produce cloneable instances with independant histories', () => {61    assertProduceCorrectValues(62      compareBooleanFuncBuilder,63      (f, calls) => {64        for (const [a, b] of calls) {65          f(a, b);66        }67        expect(String(f)).toBe(String(f)); // calling toString does not alter the output68        expect(hasCloneMethod(f)).toBe(true); // f should be cloneable69        const clonedF = cloneIfNeeded(f);70        expect(String(clonedF)).not.toBe(String(f)); // f has been called with inputs, clonedF has not yet!71        for (const [a, b] of calls) {72          clonedF(a, b);73        }74        expect(String(clonedF)).toBe(String(f)); // both called with same inputs in the same order75      },...

compareFunc.spec.ts

Source:compareFunc.spec.ts

...18      },19    });20  });21  it('should be transitive', () => {22    assertProduceCorrectValues(23      compareFuncBuilder,24      (f, [a, b, c]) => {25        const ab = f(a, b);26        const bc = f(b, c);27        if (ab < 0 && bc < 0) expect(f(a, c)).toBeLessThan(0);28        else if (ab > 0 && bc > 0) expect(f(a, c)).toBeGreaterThan(0);29        // else: neither handled, nor skipped (yet)30      },31      { extraParameters: fc.tuple(fc.anything(), fc.anything(), fc.anything()) }32    );33  });34  it('should be zero when a = b', () => {35    assertProduceCorrectValues(36      compareFuncBuilder,37      (f, a) => {38        expect(f(a, a)).toBe(0);39      },40      { extraParameters: fc.anything() }41    );42  });43  it('should be consistent when called in reversed order', () => {44    assertProduceCorrectValues(45      compareFuncBuilder,46      (f, [a, b]) => {47        const ab = f(a, b);48        const ba = f(b, a);49        if (ab === 0) expect(ba).toBe(0);50        else if (ab < 0) expect(ba).toBeGreaterThan(0);51        else expect(ba).toBeLessThan(0);52      },53      { extraParameters: fc.tuple(fc.anything(), fc.anything()) }54    );55  });56  it('should give a re-usable string representation of the function', () => {57    assertProduceCorrectValues(compareFuncBuilder, (f, calls) => assertToStringIsSameFunction(f, calls), {58      extraParameters: fc.array(fc.tuple(fc.anything(), fc.anything())),59    });60  });61  it('should produce cloneable instances with independant histories', () => {62    assertProduceCorrectValues(63      compareFuncBuilder,64      (f, calls) => {65        for (const [a, b] of calls) {66          f(a, b);67        }68        expect(String(f)).toBe(String(f)); // calling toString does not alter the output69        expect(hasCloneMethod(f)).toBe(true); // f should be cloneable70        const clonedF = cloneIfNeeded(f);71        expect(String(clonedF)).not.toBe(String(f)); // f has been called with inputs, clonedF has not yet!72        for (const [a, b] of calls) {73          clonedF(a, b);74        }75        expect(String(clonedF)).toBe(String(f)); // both called with same inputs in the same order76      },...

Using AI Code Generation

1const fc = require("fast-check");2const assertProduceCorrectValues = require("fast-check-monorepo/packages/fast-check/src/check/arbitrary/definition/ArbitraryWithShrink.ts");3fc.assert(4  assertProduceCorrectValues(5);6const fc = require("fast-check");7const assertProduceCorrectValues = require("fast-check-monorepo/packages/fast-check/src/check/arbitrary/definition/ArbitraryWithShrink.ts");8fc.assert(9  assertProduceCorrectValues(10);11const fc = require("fast-check");12const assertProduceCorrectValues = require("fast-check-monorepo/packages/fast-check/src/check/arbitrary/definition/ArbitraryWithShrink.ts");13fc.assert(14  assertProduceCorrectValues(15);16const fc = require("fast-check");17const assertProduceCorrectValues = require("fast-check-monorepo/packages/fast-check/src/check/arbitrary/definition/ArbitraryWithShrink.ts");18fc.assert(19  assertProduceCorrectValues(20    (v) => v

Using AI Code Generation

1const assertProduceCorrectValues = require('fast-check-monorepo').assertProduceCorrectValues;2const fc = require('fast-check');3const isEven = (n) => n % 2 === 0;4const isOdd = (n) => n % 2 === 1;5assertProduceCorrectValues(6  fc.integer(),7  (n) => isEven(n) || isOdd(n),8  { verbose: true }9);

Using AI Code Generation

1const { assertProduceCorrectValues } = require('fast-check');2const { string } = require('fast-check');3assertProduceCorrectValues(4  string(),5  (value) => {6    return value.length < 20;7  },8  { verbose: true }9);10const { assertProduceCorrectValues } = require('fast-check');11const { string } = require('fast-check');12assertProduceCorrectValues(13  string(),14  (value) => {15    return value.length < 20;16  },17  { verbose: true }18);19const { assertProduceCorrectValues } = require('fast-check');20const { string } = require('fast-check');21assertProduceCorrectValues(22  string(),23  (value) => {24    return value.length < 20;25  },26  { verbose: true }27);28const { assertProduceCorrectValues } = require('fast-check');29const { string } = require('fast-check');30assertProduceCorrectValues(31  string(),32  (value) => {33    return value.length < 20;34  },35  { verbose: true }36);37const { assertProduceCorrectValues } = require('fast-check');38const { string } = require('fast-check');39assertProduceCorrectValues(40  string(),41  (value) => {42    return value.length < 20;43  },44  { verbose: true }45);46const {

Using AI Code Generation

1import { assertProduceCorrectValues } from 'fast-check';2import { date } from 'fast-check';3const isStrictlySmaller = (a: Date, b: Date) => a.getTime() < b.getTime();4const isStrictlyGreater = (a: Date, b: Date) => a.getTime() > b.getTime();5const dateArbitrary = date({ max: new Date(2019, 11, 31) });6assertProduceCorrectValues(7  (v) => isStrictlySmaller(v, new Date(2019, 11, 31)),8  { seed: 1, endOnFailure: true }9);10assertProduceCorrectValues(11  (v) => isStrictlyGreater(v, new Date(2019, 11, 31)),12  { seed: 1, endOnFailure: true }13);14import { assertProduceCorrectValues } from 'fast-check';15import { integer } from 'fast-check';16const isStrictlySmaller = (a: number, b: number) => a < b;17const isStrictlyGreater = (a: number, b: number) => a > b;18const integerArbitrary = integer({ max: 100 });19assertProduceCorrectValues(20  (v) => isStrictlySmaller(v, 100),21  { seed: 1, endOnFailure: true }22);23assertProduceCorrectValues(24  (v) => isStrictlyGreater(v, 100),25  { seed: 1, endOnFailure: true }26);

Using AI Code Generation

1const fc = require('fast-check');2const assertProduceCorrectValues = require('fast-check/lib/testable/AsyncProperty').assertProduceCorrectValues;3const asyncProperty = require('fast-check/lib/testable/AsyncProperty').asyncProperty;4const asyncPropertyNoShrink = require('fast-check/lib/testable/AsyncProperty').asyncPropertyNoShrink;5const assert = require('assert');6const asyncProperty = fc.asyncProperty;7const asyncPropertyNoShrink = fc.asyncPropertyNoShrink;8const assertProduceCorrectValues = fc.assertProduceCorrectValues;9async function main() {10  const arb = fc.integer();11  const predicate = (x) => x % 2 === 0;12  const property = asyncProperty(arb, predicate);13  await assertProduceCorrectValues(property);14}15main();16const fc = require('fast-check');17const assertProduceCorrectValues = require('fast-check/lib/testable/AsyncProperty').assertProduceCorrectValues;18const asyncProperty = require('fast-check/lib/testable/AsyncProperty').asyncProperty;19const asyncPropertyNoShrink = require('fast-check/lib/testable/AsyncProperty').asyncPropertyNoShrink;20const assert = require('assert');21const asyncProperty = fc.asyncProperty;22const asyncPropertyNoShrink = fc.asyncPropertyNoShrink;23const assertProduceCorrectValues = fc.assertProduceCorrectValues;24async function main() {25  const arb = fc.integer();26  const predicate = (x) => x % 2 === 0;27  const property = asyncProperty(arb, predicate);28  await assertProduceCorrectValues(property);29}30main();31const fc = require('fast-check');32const assertProduceCorrectValues = require('fast-check/lib/testable/AsyncProperty').assertProduceCorrectValues;33const asyncProperty = require('fast-check/lib/testable/AsyncProperty').asyncProperty;34const asyncPropertyNoShrink = require('fast-check/lib/testable/AsyncProperty').asyncPropertyNoShrink;35const assert = require('assert');

Using AI Code Generation

1const fc = require("fast-check");2const assertProduceCorrectValues = require("fast-check-monorepo").assertProduceCorrectValues;3const { add } = require("./add");4assertProduceCorrectValues(5  fc.integer(),6  fc.integer(),7  (a, b) => add(a, b) === add(b, a)8);9const fc = require("fast-check");10const assertProduceCorrectValues = require("fast-check-monorepo").assertProduceCorrectValues;11const { add } = require("./add");12assertProduceCorrectValues(13  fc.integer(),14  fc.integer(),15  (a, b) => add(a, b) === add(b, a)16);17const fc = require("fast-check");18const assertProduceCorrectValues = require("fast-check-monorepo").assertProduceCorrectValues;19const { add } = require("./add");20assertProduceCorrectValues(21  fc.integer(),22  fc.integer(),23  (a, b) => add(a, b) === add(b, a)24);25const fc = require("fast-check");26const assertProduceCorrectValues = require("fast-check-monorepo").assertProduceCorrectValues;27const { add } = require("./add");28assertProduceCorrectValues(29  fc.integer(),30  fc.integer(),31  (a, b) => add(a, b) === add(b, a)32);33const fc = require("fast-check");34const assertProduceCorrectValues = require("fast-check-monorepo").assertProduceCorrectValues;

Using AI Code Generation

1const { assertProduceCorrectValues } = require('fast-check');2const isEvenOrOdd = (n) => {3    if (n%2 === 0) {4        return "even";5    } else {6        return "odd";7    }8}9assertProduceCorrectValues(isEvenOrOdd, [fc.integer()])10The assertProduceCorrectValues method generates 100 test inputs (by default) for the isEvenOrOdd function using the integer() function. It then passes these test inputs to the isEvenOrOdd function and checks if the output is correct. The output is considered correct if it is "even" if the input is even a

Using AI Code Generation

1const fc = require('fast-check');2const assertProduceCorrectValues = require('fast-check-monorepo');3const addOne = require('./addOne.js');4assertProduceCorrectValues(addOne, fc.integer(), (t, x) => t.is(addOne(x), x + 1));5module.exports = function addOne(x) {6  return x + 1;7};

Using AI Code Generation

1const { assertProduceCorrectValues } = require('fast-check-monorepo');2const { isOdd } = require('./isOdd');3const test = (fn, inputs, fnToTest, outputs, assertProduceCorrectValues) => {4  assertProduceCorrectValues(fn, inputs, fnToTest, outputs);5};6const inputs = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];7const outputs = [true, false, true, false, true, false, true, false, true, false];8test(isOdd, inputs, isOdd, outputs, assertProduceCorrectValues);

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