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How to use cmdsRepr method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

CommandsArbitrary.spec.ts

Source:CommandsArbitrary.spec.ts

1import * as fc from '../../../src/fast-check';2import { FailureCommand, SuccessCommand } from './StepCommands';3import {4  IncreaseCommand,5  DecreaseCommand,6  EvenCommand,7  OddCommand,8  CheckLessThanCommand,9  SuccessAlwaysCommand,10} from './CounterCommands';11import { seed } from '../seed';12describe(`CommandsArbitrary (seed: ${seed})`, () => {13  describe('commands', () => {14    it('Should shrink up to the shortest failing commands list', () => {15      const out = fc.check(16        fc.property(17          fc.commands(18            [19              fc.nat().map((n) => new IncreaseCommand(n)),20              fc.nat().map((n) => new DecreaseCommand(n)),21              fc.constant(new EvenCommand()),22              fc.constant(new OddCommand()),23              fc.nat().map((n) => new CheckLessThanCommand(n + 1)),24            ],25            { disableReplayLog: true, size: '+2' }26          ),27          (cmds) => {28            const setup = () => ({29              model: { count: 0 },30              real: {},31            });32            fc.modelRun(setup, cmds);33          }34        ),35        { seed: seed }36      );37      expect(out.failed).toBe(true);38      const cmdsRepr = out.counterexample![0].toString();39      expect(cmdsRepr).toMatch(/check\[(\d+)\]$/);40      expect(cmdsRepr).toEqual('inc[1],check[1]');41    });42    it('Should result in empty commands if failures happen after the run', () => {43      const out = fc.check(44        fc.property(fc.commands([fc.constant(new SuccessAlwaysCommand())]), (cmds) => {45          const setup = () => ({46            model: { count: 0 },47            real: {},48          });49          fc.modelRun(setup, cmds);50          return false; // fails after the model, no matter the commands51        }),52        { seed: seed }53      );54      expect(out.failed).toBe(true);55      expect([...out.counterexample![0]]).toHaveLength(0);56    });57    it('Should shrink towards minimal case even with other arbitraries', () => {58      // Why this test?59      //60      // fc.commands is one of the rare Arbitrary relying on an internal state.61      // By generating commands along with other arbitraries, we could highlight states issues.62      // Basically shrinking will re-use the generated commands multiple times along with a shrunk array.63      //64      // First version was failing on this test with the following output:65      // Expected the only played command to be 'failure', got: -,success,failure for steps 266      // The output for 'steps 2' should have been '-,-,failure'67      const out = fc.check(68        fc.property(69          fc.array(fc.nat(9), { maxLength: 3 }),70          fc.commands([fc.constant(new FailureCommand()), fc.constant(new SuccessCommand())], {71            disableReplayLog: true,72          }),73          fc.array(fc.nat(9), { maxLength: 3 }),74          (validSteps1, cmds, validSteps2) => {75            const setup = () => ({76              model: { current: { stepId: 0 }, validSteps: [...validSteps1, ...validSteps2] },77              real: {},78            });79            fc.modelRun(setup, cmds);80          }81        ),82        { seed: seed }83      );84      expect(out.failed).toBe(true);85      expect(out.counterexample![1].toString()).toEqual('failure');86    });87    it('Should not start a run with already started commands', () => {88      // Why this test?89      // fc.commands relies on cloning not to waste the hasRan status of an execution90      // between two runs it is supposed to clone the commands before resetting the hasRan flag91      const unexpectedPartiallyExecuted: string[] = [];92      const out = fc.check(93        fc.property(94          fc.array(fc.nat(9), { maxLength: 3 }),95          fc.commands([fc.constant(new FailureCommand()), fc.constant(new SuccessCommand())], {96            disableReplayLog: true,97          }),98          fc.array(fc.nat(9), { maxLength: 3 }),99          (validSteps1, cmds, validSteps2) => {100            if (String(cmds) !== '') {101              // When no command has been started, String(cmds) === ''102              // Having String(cmds) !== '' implies that some commands have the hasRan flag ON103              unexpectedPartiallyExecuted.push(String(cmds));104            }105            const setup = () => ({106              model: { current: { stepId: 0 }, validSteps: [...validSteps1, ...validSteps2] },107              real: {},108            });109            fc.modelRun(setup, cmds);110          }111        ),112        { seed: seed }113      );114      expect(out.failed).toBe(true);115      expect(unexpectedPartiallyExecuted).toEqual([]);116    });117  });...

Using AI Code Generation

1const { cmdsRepr } = require('fast-check');2const { cmdsRepr } = require('fast-check-monorepo');3  { cmd: 'foo', args: [1, 2, 3] },4  { cmd: 'bar', args: [4, 5, 6] },5  { cmd: 'baz', args: [7, 8, 9] },6];7const cmdsReprStr = cmdsRepr(cmds);8console.log(cmdsReprStr);9const { cmdsRepr } = require('fast-check');10const { cmdsRepr } = require('fast-check-monorepo');11  { cmd: 'foo', args: [1, 2, 3] },12  { cmd: 'bar', args: [4, 5, 6] },13  { cmd: 'baz', args: [7, 8, 9] },14];15const cmdsReprStr = cmdsRepr(cmds);16console.log(cmdsReprStr);17const { cmdsRepr } = require('fast-check');18const { cmds

Using AI Code Generation

1const fc = require('fast-check');2const { cmdsRepr } = require('fast-check-monorepo');3const cmd = fc.commands(4  fc.integer(),5  fc.commands(6    fc.nat(),7    fc.commands(8      fc.float(),9      fc.commands(10        fc.string(),11        fc.commands(12          fc.boolean(),13          fc.commands(14            fc.constantFrom('a', 'b', 'c'),15            fc.commands(16              fc.double(),17              fc.commands(18                fc.char16bits(),19                fc.commands(20                  fc.char(),21                  fc.commands(22                    fc.bigInt(),23                    fc.commands(24                      fc.hexaString(),25                      fc.commands(26                        fc.unicodeString(),27                        fc.commands(28                          fc.fullUnicodeString(),29                          fc.commands(30                            fc.uuid(),31                            fc.commands(32                              fc.webSafeBase64(),33                              fc.commands(34                                fc.base64(),35                                fc.commands(36                                  fc.asciiString(),37                                  fc.commands(38                                    fc.array(fc.integer()),39                                    fc.commands(40                                      fc.set(fc.integer()),41                                      fc.commands(42                                        fc.object({ a: fc.integer(), b: fc.string() }),43                                        fc.commands(44                                          fc.tuple(fc.integer(), fc.string()),45                                          fc.commands(46                                            fc.record({ a: fc.integer(), b: fc.string() }),47                                            fc.commands(48                                              fc.dictionary(fc.string(), fc.integer()),49                                              fc.commands(50                                                fc.date(),51                                                fc.commands(52                                                  fc.json(),53                                                  fc.commands(54                                                    fc.char16bits(),55                                                    fc.commands(56                                                      fc.char(),57                                                      fc.commands(58                                                        fc.bigInt(),59                                                        fc.commands(60                                                          fc.hexaString(),61                                                          fc.commands(62                                                            fc.unicodeString(),63                                                            fc.commands(64                                                              fc.fullUnicodeString(),65                                                              fc.commands(66                                                                fc.uuid(),67                                                                fc.commands(68                                                                  fc.webSafeBase64(),69                                                                  fc.commands(70                                                                    fc.base64(),71                                                                    fc.commands(72                                                                      fc.asciiString(),73                                                                      fc.commands(74                                                                        fc.array(fc.integer()),75                                                                        fc.commands(76                                                                          fc.set(fc.integer()),77                                                                          fc.commands(78                                                                            fc.object({ a: fc.integer(), b: fc.string() }),79                                                                            fc.commands(80                                                                              fc.tuple(fc.integer(), fc.string()),81                                                                              fc.commands(82                                                                                fc.record({ a: fc.integer(), b: fc.string() }),83                                                                                fc.commands(84                                                                                  fc.dictionary(fc.string(), fc.integer()),85                                                                                  fc.commands(86                                                                                    fc.date(),87                                                                                    fc.commands(88                                                                                      fc.json(),89                                                                                      fc.commands(

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