How to use valueArb method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

merge-weak-sets.js

Source:merge-weak-sets.js Github

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1/**2 * Copyright 2021 Google LLC3 *4 * Licensed under the Apache License, Version 2.0 (the "License");5 * you may not use this file except in compliance with the License.6 * You may obtain a copy of the License at7 *8 * http://www.apache.org/licenses/LICENSE-2.09 *10 * Unless required by applicable law or agreed to in writing, software11 * distributed under the License is distributed on an "AS IS" BASIS,12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.13 * See the License for the specific language governing permissions and14 * limitations under the License.15 */16import { testProp, fc } from 'ava-fast-check'17import isWeakSet from 'is-weakset'18import test from 'ava'19import { mergeWeakSets } from '../src/merge-weak-sets.js'20import toCommands from './helpers/to-commands.js'21const arraysArb = fc.array(fc.array(fc.object()))22testProp(`mergeWeakSets returns a WeakSet`, [arraysArb], (t, arrays) => {23 const weakSet = mergeWeakSets(...arrays.map(array => new WeakSet(array)))24 t.true(isWeakSet(weakSet))25})26testProp(27 `mergeWeakSets throws a type error when passed a non-WeakSet`,28 [29 fc30 .array(31 fc.oneof(32 fc.array(fc.object()).map(array => new WeakSet(array)),33 fc.anything()34 )35 )36 .filter(array => array.some(value => !isWeakSet(value)))37 ],38 (t, values) => {39 t.throws(40 () => {41 mergeWeakSets(...values)42 },43 {44 instanceOf: TypeError,45 message: `mergeWeakSets expects WeakSets`46 }47 )48 }49)50testProp(51 `mergeWeakSets returns a WeakSet with an add method that returns the same WeakSet`,52 [arraysArb, fc.array(fc.object(), { minLength: 1 })],53 (t, arrays, array) => {54 const weakSet = mergeWeakSets(...arrays.map(array => new WeakSet(array)))55 for (const value of array) {56 t.is(weakSet.add(value), weakSet)57 }58 }59)60const { addCommand, deleteCommand, hasCommand } = toCommands({61 add(t, model, real, value) {62 real.add(value)63 model.add(value)64 },65 delete(t, model, real, value) {66 t.is(real.delete(value), model.delete(value))67 },68 has(t, model, real, value) {69 t.is(real.has(value), model.has(value))70 }71})72testProp(73 `mergeWeakSets returns a WeakSet that behaves like a non-merged WeakSet containing the same values as the merged WeakSets`,74 [75 arraysArb76 .filter(77 arrays => arrays.length > 0 && arrays.some(array => array.length > 0)78 )79 .chain(arrays => {80 const valueArb = fc.oneof(81 fc.object(),82 fc.constantFrom(...arrays.flat())83 )84 return fc.tuple(85 fc.constant(arrays),86 fc.commands(87 [88 valueArb.map(addCommand),89 valueArb.map(deleteCommand),90 valueArb.map(hasCommand)91 ],92 { maxCommands: 1000 }93 )94 )95 })96 ],97 (t, [arrays, commands]) => {98 fc.modelRun(99 () => ({100 model: { t, model: new WeakSet(arrays.flat()) },101 real: mergeWeakSets(...arrays.map(array => new WeakSet(array)))102 }),103 commands104 )105 // When we only have `add` commands no assertions are run106 t.pass()107 }108)109test(`mergeWeakSets concrete example`, t => {110 const [a, b, c, d] = [[], {}, new Set(), new Map()]111 const weakSet1 = new WeakSet([a, b])112 const weakSet2 = new WeakSet([c])113 const mergedWeakSet = mergeWeakSets(weakSet1, weakSet2)114 t.true(mergedWeakSet.has(a))115 t.true(mergedWeakSet.has(b))116 t.true(mergedWeakSet.has(c))117 mergedWeakSet.delete(a)118 t.true(weakSet1.has(a))119 t.false(mergedWeakSet.has(a))120 mergedWeakSet.add(d)121 t.false(weakSet1.has(d))122 t.false(weakSet2.has(d))123 t.true(mergedWeakSet.has(d))...

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state.test.js

Source:state.test.js Github

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1var R = require('ramda');2var jsv = require('jsverify');3var types = require('./types')(function(sA, sB) {4 return R.equals(sA.run(0), sB.run(0));5});6var Identity = require('..').Identity;7var State = require('..').State;8var Tuple = require('..').Tuple;9function tupleArb(firstArb, secondArb) {10 return jsv.pair(firstArb, secondArb).smap(11 function (pair) { return Tuple(pair[0], pair[1]); },12 function (t) { return [Tuple.fst(t), Tuple.snd(t)]; },13 R.toString14 );15}16function stateArb(evalArb, execArb) {17 return jsv.fn(tupleArb(evalArb, execArb)).smap(18 function (f) { return State(R.compose(Identity, f)); },19 function (s) { return s.run; }20 );21}22function identityArb(valueArb) {23 return valueArb.smap(24 Identity,25 function (i) { return i.value; },26 R.toString27 );28}29var fnNatArb = jsv.fn(jsv.nat);30var stateNatArb = stateArb(jsv.nat, jsv.nat);31var stateFnNatArb = stateArb(fnNatArb, jsv.nat);32var stateConstructorArb = jsv.fn(identityArb(tupleArb(jsv.nat, jsv.nat)));33describe('State', function() {34 it('returns a Tuple of the state and result via state.run', function () {35 jsv.assert(jsv.forall(jsv.nat, stateConstructorArb, function (s, fn) {36 return R.equals(State(fn).run(s), fn(s).value);37 }));38 });39 it('returns the result via state.eval', function () {40 jsv.assert(jsv.forall(jsv.nat, stateConstructorArb, function (s, fn) {41 return R.equals(State(fn).eval(s), Tuple.fst(fn(s).value));42 }));43 });44 it('returns the state via state.exec', function () {45 jsv.assert(jsv.forall(jsv.nat, stateConstructorArb, function (s, fn) {46 return R.equals(State(fn).exec(s), Tuple.snd(fn(s).value));47 }));48 });49 it('retrieves the current state via the State.get instance', function () {50 jsv.assert(jsv.forall(jsv.nat, function (s) {51 return R.equals(State.get.eval(s), s);52 }));53 });54 it('retrieves a transformed state via State.gets', function () {55 jsv.assert(jsv.forall(jsv.nat, jsv.fn(jsv.nat), function (s, fn) {56 return R.equals(State.gets(fn).eval(s), fn(s));57 }));58 });59 it('stores the given state via State.put', function () {60 jsv.assert(jsv.forall(jsv.nat, jsv.nat, function (s1, s2) {61 return R.equals(State.put(s1).exec(s2), s1);62 }));63 });64 it('modifies the stored state via State.modify', function () {65 jsv.assert(jsv.forall(jsv.nat, jsv.fn(jsv.nat), function (s, fn) {66 return State.modify(fn).exec(s) === fn(s);67 }));68 });69 it('is a Functor', function () {70 var fTest = types.functor;71 jsv.assert(jsv.forall(stateNatArb, fTest.iface));72 jsv.assert(jsv.forall(stateNatArb, fTest.id));73 jsv.assert(jsv.forall(stateNatArb, fnNatArb, fnNatArb, fTest.compose));74 });75 it('is an Apply', function () {76 var aTest = types.apply;77 jsv.assert(jsv.forall(stateFnNatArb, stateFnNatArb, stateNatArb, aTest.compose));78 jsv.assert(jsv.forall(stateNatArb, aTest.iface));79 });80 it('is an Applicative', function () {81 var aTest = types.applicative;82 jsv.assert(jsv.forall(stateNatArb, aTest.iface));83 jsv.assert(jsv.forall(stateNatArb, stateNatArb, aTest.id));84 jsv.assert(jsv.forall(stateNatArb, fnNatArb, jsv.nat, aTest.homomorphic));85 jsv.assert(jsv.forall(stateNatArb, stateFnNatArb, jsv.nat, aTest.interchange));86 });87 it('is a Chain', function () {88 var cTest = types.chain;89 var fnEArb = jsv.fn(stateNatArb);90 jsv.assert(jsv.forall(stateNatArb, cTest.iface));91 jsv.assert(jsv.forall(stateNatArb, fnEArb, fnEArb, cTest.associative));92 });93 it('is a Monad', function () {94 jsv.assert(jsv.forall(stateNatArb, types.monad.iface));95 });...

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hareactive.arbs.ts

Source:hareactive.arbs.ts Github

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1import { Future, never, Stream, Time } from '@funkia/hareactive';2import { testFuture, testStreamFromArray } from '@funkia/hareactive/testing';3import * as fc from 'fast-check';4export type OccurringFutureArbConstraints = {5 minTime?: number;6 maxTime?: number;7};8export const occurringFutureArb = <T>(9 valueArb: fc.Arbitrary<T>,10 constraints: OccurringFutureArbConstraints = {}11): fc.Arbitrary<Future<T>> => {12 const time = fc.double({13 next: true,14 min: constraints.minTime,15 max: constraints.maxTime,16 noNaN: true,17 });18 return fc.tuple(time, valueArb).map((t) => testFuture(...t));19};20export type FutureArbConstraints = OccurringFutureArbConstraints & {21 // Probability to return never future is 1/freq. If false, future always occurs. Defaults to 5 (20%).22 freq?: number | false;23};24export const futureArb = <T>(25 value: fc.Arbitrary<T>,26 constraints: FutureArbConstraints = {}27): fc.Arbitrary<Future<T>> =>28 constraints.freq === false29 ? occurringFutureArb(value, constraints)30 : fc.option(occurringFutureArb(value, constraints), {31 freq: constraints.freq,32 nil: never,33 });34export type StreamArbConstraints<T> = {35 minEvents?: number;36 maxEvents?: number;37 minTime?: number;38 maxTime?: number;39 filterEvents?: ([t, v]: [Time, T]) => boolean;40};41export const streamArb = <T>(42 valueArb: fc.Arbitrary<T>,43 constraints: StreamArbConstraints<T> = {}44): fc.Arbitrary<Stream<T>> => {45 const eventArb = fc46 .tuple(47 fc.double({48 next: true,49 min: constraints.minTime,50 max: constraints.maxTime,51 noNaN: true,52 }),53 valueArb54 )55 .filter(constraints.filterEvents || (() => true));56 return fc57 .array(eventArb, {58 minLength: constraints.minEvents,59 maxLength: constraints.maxEvents,60 }) // Stream array must be sorted for correct semantics61 .map((s) => s.sort((a, b) => a[0] - b[0]))62 .map(testStreamFromArray);...

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Using AI Code Generation

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1const { valueArb } = require('fast-check-monorepo');2const { valueArb } = require('fast-check');3import { valueArb } from 'fast-check';4import { valueArb } from 'fast-check-monorepo';5import { valueArb } from 'fast-check-monorepo';6import { valueArb } from 'fast-check';7import { valueArb } from 'fast-check-monorepo';8import { valueArb } from 'fast-check';9import { valueArb } from 'fast-check-monorepo';10import { valueArb } from 'fast-check';11import { valueArb } from 'fast-check-monorepo';12import { valueArb } from 'fast-check';13import { valueArb } from 'fast-check-monorepo';14import { valueArb } from 'fast-check';15import { valueArb } from 'fast-check-monorepo';16import { valueArb } from 'fast-check';17import { valueArb } from 'fast-check-monorepo';18import { valueArb } from 'fast-check';19import { valueArb } from 'fast-check-monorepo';20import {

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Using AI Code Generation

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1const { valueArb } = require('fast-check-monorepo');2const { valueArb } = require('fast-check');3const { valueArb } = require('fast-check-monorepo');4const { valueArb } = require('fast-check');5const { valueArb } = require('fast-check-monorepo');6const { valueArb } = require('fast-check');7const { valueArb } = require('fast-check-monorepo');8const { valueArb } = require('fast-check');9const { valueArb } = require('fast-check-monorepo');10const { valueArb } = require('fast-check');11const { valueArb } = require('fast-check-monorepo');12const { valueArb } = require('fast-check');13const { valueArb } = require('fast-check-monorepo');14const { valueArb } = require('fast-check');15const { valueArb } = require('fast-check-monorepo');16const { valueArb } = require('fast-check');17const { valueArb } = require('fast-check-monorepo');18const { valueArb } = require('fast-check');19const { valueArb } = require('fast-check-mon

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Using AI Code Generation

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1const fc = require('fast-check');2const { valueArb } = require('fast-check-monorepo');3const arb = valueArb([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);4fc.assert(fc.property(arb, (v) => v >= 1 && v <= 10));5{6 "scripts": {7 },8 "dependencies": {9 }10}11{12 "compilerOptions": {13 },14}15{16 "compilerOptions": {17 },18 {19 }20}21{22 "compilerOptions": {

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Using AI Code Generation

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1import { valueArb } from 'fast-check-monorepo'2test('valueArb', () => {3 const arb = valueArb()4 const value = arb.generate(mrng(1))5 expect(value).not.toBeUndefined()6 expect(value).not.toBeNull()7})

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Using AI Code Generation

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1const {valueArb} = require('fast-check');2const {oneof} = require('fast-check');3const {string} = require('fast-check');4const {constant} = require('fast-check');5const {tuple} = require('fast-check');6const {record} = require('fast-check');7const {array} = require('fast-check');8const arb1 = oneof(string(), constant(1), tuple(string(), string()), record({a: string(), b: string()}), array(string()));9const arb2 = valueArb(arb1);10arb2.generate(mrng => mrng.nextInt());

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Using AI Code Generation

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1const fc = require('fast-check');2const { valueArb } = require('fast-check-monorepo');3const myArb = valueArb({ values: ['a', 'b', 'c'] });4fc.assert(fc.property(myArb, (value) => {5 console.log(value);6 return true;7}));

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Using AI Code Generation

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1import {valueArb} from 'fast-check-monorepo';2import {valueArb} from 'fast-check-monorepo/typings/index.d.ts';3import {valueArb} from 'fast-check-monorepo/typings/index';4import {valueArb} from 'fast-check-monorepo/typings/index.js';5import {valueArb} from 'fast-check-monorepo/typings/index.d.ts.js';6import {valueArb} from 'fast-check-monorepo/typings/index.d.ts/index.d.ts';7import {valueArb} from 'fast-check-monorepo/typings/index.d.ts/index';8import {valueArb} from 'fast-check-monorepo/typings/index.d.ts/index.js';9import {valueArb} from 'fast-check-monorepo/typings/index.d.ts/index.d.ts.js';10import {valueArb} from 'fast-check-monorepo';11import {valueArb} from 'fast-check-monorepo/typings/index.d.ts';12import {valueArb} from 'fast-check-monorepo/typings/index';13import {valueArb} from 'fast-check-monorepo/typings/index.js';14import {valueArb} from 'fast-check-monorepo/typings/index.d.ts.js';15import {valueArb} from 'fast-check-monorepo/typings/index.d.ts/index.d.ts';16import {valueArb} from 'fast-check-monorepo/typings/index.d.ts/index';17import {valueArb} from 'fast-check-monorepo/typings/index.d.ts/index.js';18import {valueArb} from 'fast-check-monorepo/typings/index.d.ts/index.d.ts.js';19import {valueArb} from 'fast-check-monorepo';20import {valueArb} from 'fast-check-monorepo/typings/index.d.ts';21import {valueArb} from 'fast-check-monorepo/typings/index';22import {valueArb} from 'fast-check-monorepo/typings/index.js';23import {valueArb} from 'fast-check-monorepo/typings/index.d.ts.js';24import {valueAr

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Using AI Code Generation

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1const { valueArb } = require('fast-check');2const arb = valueArb([1, 2, 3]);3arb.sample();4const { valueArb } = require('fast-check');5const arb = valueArb([1, 2, 3]);6arb.sample();7const { valueArb } = require('fast-check');8const arb = valueArb([1, 2, 3]);9arb.sample();10const { valueArb } = require('fast-check');11const arb = valueArb([1, 2, 3]);12arb.sample();13const { valueArb } = require('fast-check');14const arb = valueArb([1, 2, 3]);15arb.sample();16const { valueArb } = require('fast-check');17const arb = valueArb([1, 2, 3]);18arb.sample();19const { valueArb } = require('fast-check');20const arb = valueArb([1, 2, 3]);21arb.sample();22const { valueArb } = require('fast-check');23const arb = valueArb([1, 2, 3]);24arb.sample();25const { valueArb } = require('fast-check');26const arb = valueArb([1, 2, 3]);27arb.sample();28const { valueArb } = require('fast-check');29const arb = valueArb([1, 2, 3]);30arb.sample();31const { valueArb } = require('fast-check');32const arb = valueArb([1, 2, 3]);33arb.sample();34const { value

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Using AI Code Generation

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1import { valueArb } from 'fast-check-monorepo';2const arb = valueArb();3arb.generate();4import { valueArb } from 'fast-check-monorepo';5const arb = valueArb();6arb.generate();7- `{}`8[MIT](./LICENSE)

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