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How to use successfulRunIdsArb method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

Runner.spec.ts

Source:Runner.spec.ts

1import * as fc from 'fast-check';2import { Value } from '../../../../src/check/arbitrary/definition/Value';3import { char } from '../../../../src/arbitrary/char';4import { IRawProperty } from '../../../../src/check/property/IRawProperty';5import { check, assert as rAssert } from '../../../../src/check/runner/Runner';6import { Random } from '../../../../src/random/generator/Random';7import { RunDetails } from '../../../../src/check/runner/reporter/RunDetails';8import { PreconditionFailure } from '../../../../src/check/precondition/PreconditionFailure';9import { Stream } from '../../../../src/stream/Stream';10import { VerbosityLevel } from '../../../../src/check/runner/configuration/VerbosityLevel';11const MAX_NUM_RUNS = 1000;12describe('Runner', () => {13  describe('check', () => {14    it('Should throw if property is null', () => {15      expect(() => check(null as any as IRawProperty<unknown>)).toThrowError();16    });17    it('Should throw if property is not a property at all', () => {18      expect(() => check({} as IRawProperty<unknown>)).toThrowError();19    });20    it('Should throw if property is an Arbitrary', () => {21      expect(() => check(char() as any as IRawProperty<unknown>)).toThrowError();22    });23    it.each`24      isAsync25      ${false}26      ${true}27    `('Should throw if both reporter and asyncReporter are defined (isAsync: $isAsync)', ({ isAsync }) => {28      const p: IRawProperty<[number]> = {29        isAsync: () => isAsync,30        generate: () => new Value([0], undefined),31        shrink: () => Stream.nil(),32        run: () => null,33      };34      expect(() => check(p, { reporter: () => {}, asyncReporter: async () => {} })).toThrowError();35    });36    it('Should not throw if reporter is specified on synchronous properties', () => {37      const p: IRawProperty<[number]> = {38        isAsync: () => false,39        generate: () => new Value([0], undefined),40        shrink: () => Stream.nil(),41        run: () => null,42      };43      expect(() => check(p, { reporter: () => {} })).not.toThrowError();44    });45    it('Should not throw if reporter is specified on asynchronous properties', () => {46      const p: IRawProperty<[number]> = {47        isAsync: () => true,48        generate: () => new Value([0], undefined),49        shrink: () => Stream.nil(),50        run: () => null,51      };52      expect(() => check(p, { reporter: () => {} })).not.toThrowError();53    });54    it('Should throw if asyncReporter is specified on synchronous properties', () => {55      const p: IRawProperty<[number]> = {56        isAsync: () => false,57        generate: () => new Value([0], undefined),58        shrink: () => Stream.nil(),59        run: () => null,60      };61      expect(() => check(p, { asyncReporter: async () => {} })).toThrowError();62    });63    it('Should not throw if asyncReporter is specified on asynchronous properties', () => {64      const p: IRawProperty<[number]> = {65        isAsync: () => true,66        generate: () => new Value([0], undefined),67        shrink: () => Stream.nil(),68        run: () => null,69      };70      expect(() => check(p, { asyncReporter: async () => {} })).not.toThrowError();71    });72    it('Should call the property 100 times by default (on success)', () => {73      let numCallsGenerate = 0;74      let numCallsRun = 0;75      const p: IRawProperty<[number]> = {76        isAsync: () => false,77        generate: () => {78          expect(numCallsRun).toEqual(numCallsGenerate); // called run before calling back79          ++numCallsGenerate;80          return new Value([numCallsGenerate] as [number], undefined);81        },82        shrink: () => Stream.nil(),83        run: (value: [number]) => {84          expect(value[0]).toEqual(numCallsGenerate); // called with previously generated value85          ++numCallsRun;86          return null;87        },88      };89      const out = check(p) as RunDetails<[number]>;90      expect(numCallsGenerate).toEqual(100);91      expect(numCallsRun).toEqual(100);92      expect(out.failed).toBe(false);93    });94    it('Should call the property 100 times even when path provided (on success)', () => {95      let numCallsGenerate = 0;96      let numCallsRun = 0;97      const p: IRawProperty<[number]> = {98        isAsync: () => false,99        generate: () => {100          expect(numCallsRun).toEqual(numCallsGenerate); // called run before calling back101          ++numCallsGenerate;102          return new Value([numCallsGenerate] as [number], undefined);103        },104        shrink: () => Stream.nil(),105        run: (value: [number]) => {106          expect(value[0]).toEqual(numCallsGenerate); // called with previously generated value107          ++numCallsRun;108          return null;109        },110      };111      const out = check(p, { path: '3002' }) as RunDetails<[number]>;112      expect(numCallsGenerate).toEqual(100);113      expect(numCallsRun).toEqual(100);114      expect(out.failed).toBe(false);115    });116    it('Should call the property on all shrunk values for path (on success)', () => {117      let numCallsGenerate = 0;118      let numCallsRun = 0;119      const p: IRawProperty<[number]> = {120        isAsync: () => false,121        generate: () => {122          ++numCallsGenerate;123          return new Value<[number]>([0], 'shrink-me');124        },125        shrink: (value) => {126          function* g() {127            if (value.context !== 'shrink-me') {128              return;129            }130            for (let i = 0; i !== 1234; ++i) {131              yield new Value<[number]>([0], undefined);132            }133          }134          return new Stream(g());135        },136        run: () => {137          ++numCallsRun;138          return null;139        },140      };141      const out = check(p, { path: '3002:0' }) as RunDetails<[number]>;142      expect(numCallsGenerate).toEqual(1);143      expect(numCallsRun).toEqual(1234);144      expect(out.failed).toBe(false);145    });146    it('Should ignore precondition failure runs and generate another value', async () => {147      const gapsBetweenSuccessesArb = fc.array(fc.nat(10), { minLength: 100, maxLength: 100 });148      const successfulRunIdsArb = gapsBetweenSuccessesArb.map((gaps) =>149        gaps.reduce((prev: number[], cur: number) => {150          prev.push(prev.length === 0 ? cur : prev[prev.length - 1] + cur + 1);151          return prev;152        }, [])153      );154      await fc.assert(155        fc.asyncProperty(156          successfulRunIdsArb,157          fc.boolean(),158          fc.option(fc.nat(99)),159          async (successIds, isAsyncProp, failAtId) => {160            let numCallsGenerate = 0;161            let numCallsRun = 0;162            const p: IRawProperty<[number]> = {163              isAsync: () => isAsyncProp,164              generate: () => new Value([numCallsGenerate++] as [number], undefined),165              shrink: () => Stream.nil(),166              run: (value: [number]) => {167                ++numCallsRun;168                const successId = successIds.indexOf(value[0]);169                if (successId !== -1)170                  return successId === failAtId ? { error: new Error(), errorMessage: 'failed' } : null;171                return new PreconditionFailure();172              },173            };174            const out = await check(p);175            if (failAtId == null) {176              const expectedGenerate = successIds[successIds.length - 1] + 1;177              const expectedSkips = expectedGenerate - 100;178              expect(numCallsGenerate).toEqual(expectedGenerate);179              expect(numCallsRun).toEqual(expectedGenerate);180              expect(out.numRuns).toEqual(100);181              expect(out.numSkips).toEqual(expectedSkips);182              expect(out.failed).toBe(false);183            } else {184              const expectedGenerate = successIds[failAtId] + 1;185              const expectedSkips = expectedGenerate - failAtId - 1;186              expect(numCallsGenerate).toEqual(expectedGenerate);187              expect(numCallsRun).toEqual(expectedGenerate);188              expect(out.numRuns).toEqual(failAtId + 1);189              expect(out.numSkips).toEqual(expectedSkips);190              expect(out.failed).toBe(true);191            }192          }193        )194      );195    });196    it('Should fail on too many precondition failures', async () => {197      await fc.assert(198        fc.asyncProperty(199          fc.nat(1000).chain((v) => fc.record({ maxSkipsPerRun: fc.constant(v), onlySuccessId: fc.nat(2 * v + 1) })),200          fc.boolean(),201          async (settings, isAsyncProp) => {202            let numCallsGenerate = 0;203            let numPreconditionFailures = 0;204            const p: IRawProperty<[number]> = {205              isAsync: () => isAsyncProp,206              generate: () => new Value([numCallsGenerate++] as [number], undefined),207              shrink: () => Stream.nil(),208              run: (value: [number]) => {209                if (value[0] === settings.onlySuccessId) return null;210                ++numPreconditionFailures;211                return new PreconditionFailure();212              },213            };214            const out = await check(p, { numRuns: 2, maxSkipsPerRun: settings.maxSkipsPerRun });215            const expectedSkips = 2 * settings.maxSkipsPerRun + 1;216            const expectedRuns = settings.onlySuccessId === expectedSkips ? 0 : 1;217            expect(out.numRuns).toEqual(expectedRuns);218            expect(numPreconditionFailures).toEqual(expectedSkips);219            expect(out.numSkips).toEqual(expectedSkips);220            expect(out.failed).toBe(true);221          }222        )223      );224    });225    it('Should never call shrink on success', () => {226      let numCallsGenerate = 0;227      let numCallsRun = 0;228      const p: IRawProperty<[number]> = {229        isAsync: () => false,230        generate: () => {231          ++numCallsGenerate;232          return new Value([0], undefined);233        },234        shrink: () => {235          throw 'Not implemented';236        },237        run: (_value: [number]) => {238          ++numCallsRun;239          return null;240        },241      };242      const out = check(p) as RunDetails<[number]>;243      expect(numCallsGenerate).toEqual(100);244      expect(numCallsRun).toEqual(100);245      expect(out.failed).toBe(false);246    });247    it('Should call the property 100 times by default (except on error)', () =>248      fc.assert(249        fc.property(fc.integer({ min: 1, max: 100 }), fc.integer(), (num, seed) => {250          let numCallsGenerate = 0;251          let numCallsRun = 0;252          const p: IRawProperty<[number]> = {253            isAsync: () => false,254            generate: () => {255              ++numCallsGenerate;256              return new Value([0], undefined);257            },258            shrink: () => Stream.nil(),259            run: (_value: [number]) => {260              return ++numCallsRun < num ? null : { error: new Error(), errorMessage: 'error' };261            },262          };263          const out = check(p, { seed: seed }) as RunDetails<[number]>;264          expect(numCallsGenerate).toEqual(num); // stopped generate at first failing run265          expect(numCallsRun).toEqual(num); //  no shrink for first failing run266          expect(out.failed).toBe(true);267          expect(out.numRuns).toEqual(num);268          expect(out.seed).toEqual(seed);269          return true;270        })271      ));272    it('Should alter the number of runs when asked to', () =>273      fc.assert(274        fc.property(fc.nat(MAX_NUM_RUNS), (num) => {275          let numCallsGenerate = 0;276          let numCallsRun = 0;277          const p: IRawProperty<[number]> = {278            isAsync: () => false,279            generate: () => {280              ++numCallsGenerate;281              return new Value([0], undefined);282            },283            shrink: () => Stream.nil(),284            run: (_value: [number]) => {285              ++numCallsRun;286              return null;287            },288          };289          const out = check(p, { numRuns: num }) as RunDetails<[number]>;290          expect(numCallsGenerate).toEqual(num);291          expect(numCallsRun).toEqual(num);292          expect(out.failed).toBe(false);293          return true;294        })295      ));296    it('Should generate the same values given the same seeds', () =>297      fc.assert(298        fc.property(fc.integer(), (seed) => {299          const buildPropertyFor = function (runOn: number[]) {300            const p: IRawProperty<[number]> = {301              isAsync: () => false,302              generate: (rng: Random) => {303                return new Value([rng.nextInt()], undefined);304              },305              shrink: () => Stream.nil(),306              run: (value: [number]) => {307                runOn.push(value[0]);308                return null;309              },310            };311            return p;312          };313          const data1: number[] = [];314          const data2: number[] = [];315          check(buildPropertyFor(data1), { seed: seed });316          check(buildPropertyFor(data2), { seed: seed });317          expect(data2).toEqual(data1);318          return true;319        })320      ));321    it('Should never call shrink if endOnFailure', () => {322      const p: IRawProperty<[number]> = {323        isAsync: () => false,324        generate: () => {325          return new Value([0], undefined);326        },327        shrink: () => {328          throw 'Not implemented';329        },330        run: (_value: [number]) => {331          return { error: new Error(), errorMessage: 'failure' };332        },333      };334      const out = check(p, { endOnFailure: true }) as RunDetails<[number]>;335      expect(out.failed).toBe(true);336      expect(out.numShrinks).toEqual(0);337    });338    it('Should compute values for path before removing shrink if endOnFailure', () => {339      const p: IRawProperty<[number]> = {340        isAsync: () => false,341        generate: () => {342          return new Value([0], undefined);343        },344        shrink: (value) => {345          if (value.value[0] !== 0) {346            throw 'Not implemented';347          }348          return Stream.of(new Value([42], undefined));349        },350        run: (value: [number]) => {351          return value[0] === 42 ? { error: new Error(), errorMessage: 'failure' } : null;352        },353      };354      const out = check(p, { path: '0:0', endOnFailure: true }) as RunDetails<[number]>;355      expect(out.failed).toBe(true);356      expect(out.numShrinks).toEqual(0);357    });358    it('Should not provide list of failures by default (no verbose)', () => {359      const p: IRawProperty<[number]> = {360        isAsync: () => false,361        generate: () => new Value([42], undefined),362        shrink: () => Stream.nil(),363        run: () => ({ error: new Error(), errorMessage: 'failure' }),364      };365      const out = check(p) as RunDetails<[number]>;366      expect(out.failures).toHaveLength(0);367    });368    it('Should provide the list of failures in verbose mode', () => {369      const p: IRawProperty<[number]> = {370        isAsync: () => false,371        generate: () => new Value([42], undefined),372        shrink: (value) => {373          return value.value[0] === 42374            ? Stream.of(new Value([48], undefined), new Value([12], undefined))375            : Stream.nil();376        },377        run: () => ({ error: new Error(), errorMessage: 'failure' }),378      };379      const out = check(p, { verbose: true }) as RunDetails<[number]>;380      expect(out.failures).not.toHaveLength(0);381      expect(out.failures).toEqual([[42], [48]]);382    });383    it('Should build the right counterexamplePath', () =>384      fc.assert(385        fc.property(fc.integer(), fc.array(fc.nat(99), { minLength: 1, maxLength: 100 }), (seed, failurePoints) => {386          // Each entry (at index idx) in failurePoints represents the number of runs387          // required before failing for the level <idx>388          // Basically it must fail before the end of the execution (100 runs by default)389          // so failure points are between 0 and 99 inclusive390          let idx = 0;391          let remainingBeforeFailure = failurePoints[idx];392          const p: IRawProperty<[number]> = {393            isAsync: () => false,394            generate: (_mrng: Random) => new Value([0], failurePoints.length - 1),395            shrink: (value) => {396              const depth = value.context as number;397              if (depth <= 0) {398                return Stream.nil();399              }400              function* g(): IterableIterator<Value<[number]>> {401                while (true) yield new Value([0], depth - 1);402              }403              return new Stream(g());404            },405            run: (_value: [number]) => {406              if (--remainingBeforeFailure >= 0) return null;407              remainingBeforeFailure = failurePoints[++idx];408              return { error: new Error(), errorMessage: 'failure' };409            },410          };411          const expectedFailurePath = failurePoints.join(':');412          const out = check(p, { seed: seed }) as RunDetails<[number]>;413          expect(out.failed).toBe(true);414          expect(out.seed).toEqual(seed);415          expect(out.numRuns).toEqual(failurePoints[0] + 1);416          expect(out.numShrinks).toEqual(failurePoints.length - 1);417          expect(out.counterexamplePath).toEqual(expectedFailurePath);418        })419      ));420    it('Should wait on async properties to complete', async () =>421      fc.assert(422        fc.asyncProperty(fc.integer({ min: 1, max: 100 }), fc.integer(), async (num, seed) => {423          const delay = () => new Promise((resolve) => setTimeout(resolve, 0));424          let runnerHasCompleted = false;425          const waitingResolve: (() => void)[] = [];426          let numCallsGenerate = 0;427          let numCallsRun = 0;428          const p: IRawProperty<[number]> = {429            isAsync: () => true,430            generate: () => {431              ++numCallsGenerate;432              return new Value([1], undefined);433            },434            shrink: (value) => {435              return value.value[0] === 1 ? Stream.of(new Value([42], undefined)) : Stream.nil();436            },437            run: async (_value: [number]) => {438              await new Promise<void>((resolve) => {439                waitingResolve.push(resolve);440              });441              return ++numCallsRun < num ? null : { error: new Error(), errorMessage: 'error' };442            },443          };444          const checker = check(p, { seed: seed }) as Promise<RunDetails<[number]>>;445          checker.then(() => (runnerHasCompleted = true));446          await delay();447          while (waitingResolve.length > 0) {448            expect(waitingResolve).toHaveLength(1); // no multiple properties in parallel449            expect(runnerHasCompleted).toBe(false); // not completed yet450            waitingResolve.shift()!();451            await delay();452          }453          await delay();454          expect(runnerHasCompleted).toBe(true);455          const out = await checker;456          expect(numCallsGenerate).toEqual(num); // stopped generate at first failing run457          expect(numCallsRun).toEqual(num + 1); // stopped run one shrink after first failing run458          expect(out.failed).toBe(true);459          expect(out.numRuns).toEqual(num);460          expect(out.seed).toEqual(seed);461          expect(out.counterexample).toEqual([42]);462          return true;463        })464      ));465    it('Should not timeout if no timeout defined', async () => {466      const p: IRawProperty<[number]> = {467        isAsync: () => true,468        generate: () => new Value([1], undefined),469        shrink: () => Stream.nil(),470        run: async (_value: [number]) => null,471      };472      const out = await (check(p) as Promise<RunDetails<[number]>>);473      expect(out.failed).toBe(false);474    });475    it('Should not timeout if timeout not reached', async () => {476      const wait = (timeMs: number) => new Promise<null>((resolve) => setTimeout(() => resolve(null), timeMs));477      const p: IRawProperty<[number]> = {478        isAsync: () => true,479        generate: () => new Value([1], undefined),480        shrink: () => Stream.nil(),481        run: async (_value: [number]) => await wait(0),482      };483      const out = await (check(p, { timeout: 100 }) as Promise<RunDetails<[number]>>);484      expect(out.failed).toBe(false);485    });486    it('Should timeout if it reached the timeout', async () => {487      const wait = (timeMs: number) => new Promise<null>((resolve) => setTimeout(() => resolve(null), timeMs));488      const p: IRawProperty<[number]> = {489        isAsync: () => true,490        generate: () => new Value([1], undefined),491        shrink: () => Stream.nil(),492        run: async (_value: [number]) => await wait(100),493      };494      const out = await (check(p, { timeout: 0 }) as Promise<RunDetails<[number]>>);495      expect(out.failed).toBe(true);496    });497    it('Should timeout if task never ends', async () => {498      const neverEnds = () => new Promise<null>(() => {});499      const p: IRawProperty<[number]> = {500        isAsync: () => true,501        generate: () => new Value([1], undefined),502        shrink: () => Stream.nil(),503        run: async (_value: [number]) => await neverEnds(),504      };505      const out = await (check(p, { timeout: 0 }) as Promise<RunDetails<[number]>>);506      expect(out.failed).toBe(true);507    });508  });509  describe('assert', () => {510    const v1 = { toString: () => 'toString(value#1)' };511    const v2 = { a: 'Hello', b: 21 };512    const failingProperty: IRawProperty<[any, any]> = {513      isAsync: () => false,514      generate: () => new Value([v1, v2], undefined),515      shrink: () => Stream.nil(),516      run: (_v: [any, any]) => ({ error: new Error(), errorMessage: 'error in failingProperty' }),517    };518    const failingComplexProperty: IRawProperty<[any, any, any]> = {519      isAsync: () => false,520      generate: () => new Value([[v1, v2], v2, v1], undefined),521      shrink: () => Stream.nil(),522      run: (_v: [any, any, any]) => ({ error: new Error(), errorMessage: 'error in failingComplexProperty' }),523    };524    const successProperty: IRawProperty<[any, any]> = {525      isAsync: () => false,526      generate: () => new Value([v1, v2], undefined),527      shrink: () => Stream.nil(),528      run: (_v: [any, any]) => null,529    };530    it('Should throw if property is null', () => {531      expect(() => rAssert(null as any as IRawProperty<unknown>)).toThrowError();532    });533    it('Should throw if property is not a property at all', () => {534      expect(() => rAssert({} as IRawProperty<unknown>)).toThrowError();535    });536    it('Should throw if property is an Arbitrary', () => {537      expect(() => rAssert(char() as any as IRawProperty<unknown>)).toThrowError();538    });539    it('Should never throw if no failure occured', () => {540      expect(() => rAssert(successProperty, { seed: 42 })).not.toThrow();541    });542    it('Should throw on failure', () => {543      expect(() => rAssert(failingProperty, { seed: 42 })).toThrowError();544    });545    it('Should put the seed in error message', () => {546      expect(() => rAssert(failingProperty, { seed: 42 })).toThrowError(`seed: 42, path:`);547    });548    it('Should put the number of tests in error message', () => {549      expect(() => rAssert(failingProperty, { seed: 42 })).toThrowError(`failed after 1 test`);550    });551    it('Should pretty print the failing example in error message', () => {552      expect(() => rAssert(failingProperty, { seed: 42 })).toThrowError(`[${v1.toString()},${JSON.stringify(v2)}]`);553    });554    it('Should pretty print the failing complex example in error message', () => {555      expect(() => rAssert(failingComplexProperty, { seed: 42 })).toThrowError(556        `[[${v1.toString()},${JSON.stringify(v2)}],${JSON.stringify(v2)},${v1.toString()}]`557      );558    });559    it('Should put the orginal error in error message', () => {560      expect(() => rAssert(failingProperty, { seed: 42 })).toThrowError(`Got error: error in failingProperty`);561    });562    describe('Impact of VerbosityLevel in case of failure', () => {563      const baseErrorMessage = '';564      const p: IRawProperty<[number]> = {565        isAsync: () => false,566        generate: () => {567          return new Value([42], undefined);568        },569        shrink: (value) => {570          return value.value[0] === 42571            ? Stream.of(new Value([48], undefined), new Value([12], undefined))572            : Stream.nil();573        },574        run: () => ({ error: new Error(), errorMessage: 'failure' }),575      };576      it('Should throw with base message by default (no verbose)', () => {577        expect(() => rAssert(p)).toThrowError(baseErrorMessage);578      });579      it('Should throw without list of failures by default (no verbose)', () => {580        expect(() => rAssert(p)).not.toThrowError('Encountered failures were:');581      });582      it('Should throw without execution tree by default (no verbose)', () => {583        expect(() => rAssert(p)).not.toThrowError('Execution summary:');584      });585      it('Should throw with base message in verbose mode', () => {586        expect(() => rAssert(p, { verbose: VerbosityLevel.Verbose })).toThrowError(baseErrorMessage);587      });588      it('Should throw with list of failures in verbose mode', () => {589        expect(() => rAssert(p, { verbose: VerbosityLevel.Verbose })).toThrowError('Encountered failures were:');590      });591      it('Should throw without execution tree in verbose mode', () => {592        expect(() => rAssert(p, { verbose: VerbosityLevel.Verbose })).not.toThrowError('Execution summary:');593      });594      it('Should throw with base message in very verbose mode', () => {595        expect(() => rAssert(p, { verbose: VerbosityLevel.VeryVerbose })).toThrowError(baseErrorMessage);596      });597      it('Should throw without list of failures in very verbose mode', () => {598        expect(() => rAssert(p, { verbose: VerbosityLevel.VeryVerbose })).not.toThrowError(599          'Encountered failures were:'600        );601      });602      it('Should throw with execution tree in very verbose mode', () => {603        expect(() => rAssert(p, { verbose: VerbosityLevel.VeryVerbose })).toThrowError('Execution summary:');604      });605    });606    describe('Impact of VerbosityLevel in case of too many skipped runs', () => {607      const baseErrorMessage = 'Failed to run property, too many pre-condition failures encountered';608      const p: IRawProperty<[number]> = {609        isAsync: () => false,610        generate: () => new Value([42], undefined),611        shrink: () => Stream.nil(),612        run: () => new PreconditionFailure(),613      };614      it('Should throw with base message by default (no verbose)', () => {615        expect(() => rAssert(p)).toThrowError(baseErrorMessage);616      });617      it('Should throw without list of failures by default (no verbose)', () => {618        expect(() => rAssert(p)).not.toThrowError('Encountered failures were:');619      });620      it('Should throw without execution tree by default (no verbose)', () => {621        expect(() => rAssert(p)).not.toThrowError('Execution summary:');622      });623      it('Should throw with base message in verbose mode', () => {624        expect(() => rAssert(p, { verbose: VerbosityLevel.Verbose })).toThrowError(baseErrorMessage);625      });626      it('Should throw without list of failures in verbose mode', () => {627        expect(() => rAssert(p, { verbose: VerbosityLevel.Verbose })).not.toThrowError('Encountered failures were:');628      });629      it('Should throw without execution tree in verbose mode', () => {630        expect(() => rAssert(p, { verbose: VerbosityLevel.Verbose })).not.toThrowError('Execution summary:');631      });632      it('Should throw with base message in very verbose mode', () => {633        expect(() => rAssert(p, { verbose: VerbosityLevel.VeryVerbose })).toThrowError(baseErrorMessage);634      });635      it('Should throw without list of failures in very verbose mode', () => {636        expect(() => rAssert(p, { verbose: VerbosityLevel.VeryVerbose })).not.toThrowError(637          'Encountered failures were:'638        );639      });640      it('Should throw with execution tree in very verbose mode', () => {641        expect(() => rAssert(p, { verbose: VerbosityLevel.VeryVerbose })).toThrowError('Execution summary:');642      });643    });644  });...

Using AI Code Generation

1const { successfulRunIdsArb } = require("fast-check-monorepo");2const { successfulRunIdsArb } = require("fast-check-monorepo");3const { successfulRunIdsArb } = require("fast-check-monorepo");4const { successfulRunIdsArb } = require("fast-check-monorepo");5const { successfulRunIdsArb } = require("fast-check-monorepo");6const { successfulRunIdsArb } = require("fast-check-monorepo");7const { successfulRunIdsArb } = require("fast-check-monorepo");8const { successfulRunIdsArb } = require("fast-check-monorepo");9const { successfulRunIdsArb } = require("fast-check-monorepo");10const { successfulRunIdsArb } = require("fast-check-monorepo");11const { successfulRunIdsArb } = require("fast-check-monorepo");12const { successfulRunIdsArb } = require("fast-check-monorepo");13const { successfulRunIdsArb } = require("fast-check-monorepo");14const { successfulRunIdsArb } = require("fast-check-monorepo");15const { successfulRunIdsArb } = require("fast-check-monorepo");

Using AI Code Generation

1const { successfulRunIdsArb } = require('fast-check-monorepo');2const { successfulRunIdsArb } = require('fast-check-monorepo');3const { successfulRunIdsArb } = require('fast-check-monorepo');4const { successfulRunIdsArb } = require('fast-check-monorepo');5const { successfulRunIdsArb } = require('fast-check-monorepo');6const { successfulRunIdsArb } = require('fast-check-monorepo');7const { successfulRunIdsArb } = require('fast-check-monorepo');8const { successfulRunIdsArb } = require('fast-check-monorepo');9const { successfulRunIdsArb } = require('fast-check-monorepo');10const { successfulRunIdsArb } = require('fast-check-monorepo');11const { successfulRunIdsArb } = require('fast-check-monorepo');12const { successfulRunIdsArb } = require('fast-check-monorepo');13const { successfulRunIdsArb } = require('fast-check-monorepo');14const { successfulRunIdsArb } = require('fast-check-monorepo');15const { successfulRunIdsArb } = require('fast-check-monorepo');16const { successfulRunIdsArb } = require('fast-check-monorepo');17const { successfulRunIdsArb } = require('fast-check-monorepo');18const { successfulRunIdsArb } = require('fast-check-monorepo');19const { successfulRunIdsArb } = require('fast-check-monorepo');20const { successfulRunIdsArb } = require('fast-check-monorepo');21const { successfulRunIdsArb }

Using AI Code Generation

1import { successfulRunIdsArb } from 'fast-check-monorepo';2describe('test', () => {3  it('test', () => {4    fc.assert(5      fc.property(successfulRunIdsArb(), (successfulRunIds) => {6        console.log(successfulRunIds);7      })8    );9  });10});11import { successfulRunIdsArb } from 'fast-check-monorepo';12describe('test', () => {13  it('test', () => {14    fc.assert(15      fc.property(successfulRunIdsArb(), (successfulRunIds) => {16        console.log(successfulRunIds);17      })18    );19  });20});21import { successfulRunIdsArb } from 'fast-check-monorepo';22describe('test', () => {23  it('test', () => {24    fc.assert(25      fc.property(successfulRunIdsArb(), (successfulRunIds) => {26        console.log(successfulRunIds);27      })28    );29  });30});31import { successfulRunIdsArb } from 'fast-check-monorepo';32describe('test', () => {33  it('test', () => {34    fc.assert(35      fc.property(successfulRunIdsArb(), (successfulRunIds) => {36        console.log(successfulRunIds);37      })38    );39  });40});41import { successfulRunIdsArb } from 'fast-check-monorepo';42describe('test', () => {43  it('test', () => {44    fc.assert(45      fc.property(successfulRunIdsArb(), (successfulRunIds) => {46        console.log(successfulRunIds);47      })48    );49  });50});51import { successfulRunIdsArb } from 'fast-check-monorepo';52describe('test', () => {53  it('test', () => {54    fc.assert(55      fc.property(successfulRunIdsAr

Using AI Code Generation

1const { successfulRunIdsArb } = require('fast-check-monorepo');2describe('my test', () => {3  it('should do something', () => {4    fc.assert(5      fc.property(successfulRunIdsArb(), (runIds) => {6      })7    );8  });9});10{11  "scripts": {12  },13  "devDependencies": {14  }15}

Using AI Code Generation

1const { successfulRunIdsArb } = require('fast-check-monorepo');2const fc = require('fast-check');3const runIdsArb = successfulRunIdsArb(100);4fc.assert(fc.property(runIdsArb, (runIds) => {5  return runIds.length > 0;6}));7{8  "scripts": {9  },10  "dependencies": {11  }12}13npm ERR! 404 You should bug the author to publish it (or use the name yourself!)

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.