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How to use unstable_getCurrent method in Playwright Internal

Best JavaScript code snippet using playwright-internal

Tracking-test.internal.js

...52      });53      wrapped('foo', 'bar');54    });55    it('should return an empty set when outside of a tracked event', () => {56      expect(SchedulerTracking.unstable_getCurrent()).toContainNoInteractions();57    });58    it('should report the tracked interaction from within the track callback', done => {59      advanceTimeBy(100);60      SchedulerTracking.unstable_track('some event', currentTime, () => {61        const interactions = SchedulerTracking.unstable_getCurrent();62        expect(interactions).toMatchInteractions([63          {name: 'some event', timestamp: 100},64        ]);65        done();66      });67    });68    it('should report the tracked interaction from within wrapped callbacks', done => {69      let wrappedIndirection;70      function indirection() {71        const interactions = SchedulerTracking.unstable_getCurrent();72        expect(interactions).toMatchInteractions([73          {name: 'some event', timestamp: 100},74        ]);75        done();76      }77      advanceTimeBy(100);78      SchedulerTracking.unstable_track('some event', currentTime, () => {79        wrappedIndirection = SchedulerTracking.unstable_wrap(indirection);80      });81      advanceTimeBy(50);82      wrappedIndirection();83    });84    it('should clear the interaction stack for tracked callbacks', () => {85      let innerTestReached = false;86      SchedulerTracking.unstable_track('outer event', currentTime, () => {87        expect(SchedulerTracking.unstable_getCurrent()).toMatchInteractions([88          {name: 'outer event'},89        ]);90        SchedulerTracking.unstable_clear(() => {91          expect(SchedulerTracking.unstable_getCurrent()).toMatchInteractions(92            [],93          );94          SchedulerTracking.unstable_track('inner event', currentTime, () => {95            expect(SchedulerTracking.unstable_getCurrent()).toMatchInteractions(96              [{name: 'inner event'}],97            );98            innerTestReached = true;99          });100        });101        expect(SchedulerTracking.unstable_getCurrent()).toMatchInteractions([102          {name: 'outer event'},103        ]);104      });105      expect(innerTestReached).toBe(true);106    });107    it('should clear the interaction stack for wrapped callbacks', () => {108      let innerTestReached = false;109      let wrappedIndirection;110      const indirection = jest.fn(() => {111        expect(SchedulerTracking.unstable_getCurrent()).toMatchInteractions([112          {name: 'outer event'},113        ]);114        SchedulerTracking.unstable_clear(() => {115          expect(SchedulerTracking.unstable_getCurrent()).toMatchInteractions(116            [],117          );118          SchedulerTracking.unstable_track('inner event', currentTime, () => {119            expect(SchedulerTracking.unstable_getCurrent()).toMatchInteractions(120              [{name: 'inner event'}],121            );122            innerTestReached = true;123          });124        });125        expect(SchedulerTracking.unstable_getCurrent()).toMatchInteractions([126          {name: 'outer event'},127        ]);128      });129      SchedulerTracking.unstable_track('outer event', currentTime, () => {130        wrappedIndirection = SchedulerTracking.unstable_wrap(indirection);131      });132      wrappedIndirection();133      expect(innerTestReached).toBe(true);134    });135    it('should support nested tracked events', done => {136      advanceTimeBy(100);137      let innerIndirectionTracked = false;138      let outerIndirectionTracked = false;139      function innerIndirection() {140        const interactions = SchedulerTracking.unstable_getCurrent();141        expect(interactions).toMatchInteractions([142          {name: 'outer event', timestamp: 100},143          {name: 'inner event', timestamp: 150},144        ]);145        innerIndirectionTracked = true;146      }147      function outerIndirection() {148        const interactions = SchedulerTracking.unstable_getCurrent();149        expect(interactions).toMatchInteractions([150          {name: 'outer event', timestamp: 100},151        ]);152        outerIndirectionTracked = true;153      }154      SchedulerTracking.unstable_track('outer event', currentTime, () => {155        // Verify the current tracked event156        let interactions = SchedulerTracking.unstable_getCurrent();157        expect(interactions).toMatchInteractions([158          {name: 'outer event', timestamp: 100},159        ]);160        advanceTimeBy(50);161        const wrapperOuterIndirection = SchedulerTracking.unstable_wrap(162          outerIndirection,163        );164        let wrapperInnerIndirection;165        let innerEventTracked = false;166        // Verify that a nested event is properly tracked167        SchedulerTracking.unstable_track('inner event', currentTime, () => {168          interactions = SchedulerTracking.unstable_getCurrent();169          expect(interactions).toMatchInteractions([170            {name: 'outer event', timestamp: 100},171            {name: 'inner event', timestamp: 150},172          ]);173          // Verify that a wrapped outer callback is properly tracked174          wrapperOuterIndirection();175          expect(outerIndirectionTracked).toBe(true);176          wrapperInnerIndirection = SchedulerTracking.unstable_wrap(177            innerIndirection,178          );179          innerEventTracked = true;180        });181        expect(innerEventTracked).toBe(true);182        // Verify that the original event is restored183        interactions = SchedulerTracking.unstable_getCurrent();184        expect(interactions).toMatchInteractions([185          {name: 'outer event', timestamp: 100},186        ]);187        // Verify that a wrapped nested callback is properly tracked188        wrapperInnerIndirection();189        expect(innerIndirectionTracked).toBe(true);190        done();191      });192    });193    describe('error handling', () => {194      it('should reset state appropriately when an error occurs in a track callback', done => {195        advanceTimeBy(100);196        SchedulerTracking.unstable_track('outer event', currentTime, () => {197          expect(() => {198            SchedulerTracking.unstable_track('inner event', currentTime, () => {199              throw Error('intentional');200            });201          }).toThrow();202          expect(SchedulerTracking.unstable_getCurrent()).toMatchInteractions([203            {name: 'outer event', timestamp: 100},204          ]);205          done();206        });207      });208      it('should reset state appropriately when an error occurs in a wrapped callback', done => {209        advanceTimeBy(100);210        SchedulerTracking.unstable_track('outer event', currentTime, () => {211          let wrappedCallback;212          SchedulerTracking.unstable_track('inner event', currentTime, () => {213            wrappedCallback = SchedulerTracking.unstable_wrap(() => {214              throw Error('intentional');215            });216          });217          expect(wrappedCallback).toThrow();218          expect(SchedulerTracking.unstable_getCurrent()).toMatchInteractions([219            {name: 'outer event', timestamp: 100},220          ]);221          done();222        });223      });224    });225    describe('advanced integration', () => {226      it('should return a unique threadID per request', () => {227        expect(SchedulerTracking.unstable_getThreadID()).not.toBe(228          SchedulerTracking.unstable_getThreadID(),229        );230      });231      it('should expose the current set of interactions to be externally manipulated', () => {232        SchedulerTracking.unstable_track('outer event', currentTime, () => {233          expect(SchedulerTracking.__interactionsRef.current).toBe(234            SchedulerTracking.unstable_getCurrent(),235          );236          SchedulerTracking.__interactionsRef.current = new Set([237            {name: 'override event'},238          ]);239          expect(SchedulerTracking.unstable_getCurrent()).toMatchInteractions([240            {name: 'override event'},241          ]);242        });243      });244      it('should expose a subscriber ref to be externally manipulated', () => {245        SchedulerTracking.unstable_track('outer event', currentTime, () => {246          expect(SchedulerTracking.__subscriberRef).toEqual({247            current: null,248          });249        });250      });251    });252  });253  describe('enableSchedulerTracking disabled', () => {254    beforeEach(() => loadModules({enableSchedulerTracking: false}));255    it('should return the value of a tracked function', () => {256      expect(257        SchedulerTracking.unstable_track('arbitrary', currentTime, () => 123),258      ).toBe(123);259    });260    it('should return the value of a wrapped function', () => {261      let wrapped;262      SchedulerTracking.unstable_track('arbitrary', currentTime, () => {263        wrapped = SchedulerTracking.unstable_wrap(() => 123);264      });265      expect(wrapped()).toBe(123);266    });267    it('should return null for tracked interactions', () => {268      expect(SchedulerTracking.unstable_getCurrent()).toBe(null);269    });270    it('should execute tracked callbacks', done => {271      SchedulerTracking.unstable_track('some event', currentTime, () => {272        expect(SchedulerTracking.unstable_getCurrent()).toBe(null);273        done();274      });275    });276    it('should return the value of a clear function', () => {277      expect(SchedulerTracking.unstable_clear(() => 123)).toBe(123);278    });279    it('should execute wrapped callbacks', done => {280      const wrappedCallback = SchedulerTracking.unstable_wrap(() => {281        expect(SchedulerTracking.unstable_getCurrent()).toBe(null);282        done();283      });284      wrappedCallback();285    });286    describe('advanced integration', () => {287      it('should not create unnecessary objects', () => {288        expect(SchedulerTracking.__interactionsRef).toBe(null);289      });290    });291  });...

Tracing-test.internal.js

Source: Tracing-test.internal.js

...52      });53      wrapped('foo', 'bar');54    });55    it('should return an empty set when outside of a traced event', () => {56      expect(SchedulerTracing.unstable_getCurrent()).toContainNoInteractions();57    });58    it('should report the traced interaction from within the trace callback', done => {59      advanceTimeBy(100);60      SchedulerTracing.unstable_trace('some event', currentTime, () => {61        const interactions = SchedulerTracing.unstable_getCurrent();62        expect(interactions).toMatchInteractions([63          {name: 'some event', timestamp: 100},64        ]);65        done();66      });67    });68    it('should report the traced interaction from within wrapped callbacks', done => {69      let wrappedIndirection;70      function indirection() {71        const interactions = SchedulerTracing.unstable_getCurrent();72        expect(interactions).toMatchInteractions([73          {name: 'some event', timestamp: 100},74        ]);75        done();76      }77      advanceTimeBy(100);78      SchedulerTracing.unstable_trace('some event', currentTime, () => {79        wrappedIndirection = SchedulerTracing.unstable_wrap(indirection);80      });81      advanceTimeBy(50);82      wrappedIndirection();83    });84    it('should clear the interaction stack for traced callbacks', () => {85      let innerTestReached = false;86      SchedulerTracing.unstable_trace('outer event', currentTime, () => {87        expect(SchedulerTracing.unstable_getCurrent()).toMatchInteractions([88          {name: 'outer event'},89        ]);90        SchedulerTracing.unstable_clear(() => {91          expect(SchedulerTracing.unstable_getCurrent()).toMatchInteractions(92            [],93          );94          SchedulerTracing.unstable_trace('inner event', currentTime, () => {95            expect(SchedulerTracing.unstable_getCurrent()).toMatchInteractions([96              {name: 'inner event'},97            ]);98            innerTestReached = true;99          });100        });101        expect(SchedulerTracing.unstable_getCurrent()).toMatchInteractions([102          {name: 'outer event'},103        ]);104      });105      expect(innerTestReached).toBe(true);106    });107    it('should clear the interaction stack for wrapped callbacks', () => {108      let innerTestReached = false;109      let wrappedIndirection;110      const indirection = jest.fn(() => {111        expect(SchedulerTracing.unstable_getCurrent()).toMatchInteractions([112          {name: 'outer event'},113        ]);114        SchedulerTracing.unstable_clear(() => {115          expect(SchedulerTracing.unstable_getCurrent()).toMatchInteractions(116            [],117          );118          SchedulerTracing.unstable_trace('inner event', currentTime, () => {119            expect(SchedulerTracing.unstable_getCurrent()).toMatchInteractions([120              {name: 'inner event'},121            ]);122            innerTestReached = true;123          });124        });125        expect(SchedulerTracing.unstable_getCurrent()).toMatchInteractions([126          {name: 'outer event'},127        ]);128      });129      SchedulerTracing.unstable_trace('outer event', currentTime, () => {130        wrappedIndirection = SchedulerTracing.unstable_wrap(indirection);131      });132      wrappedIndirection();133      expect(innerTestReached).toBe(true);134    });135    it('should support nested traced events', done => {136      advanceTimeBy(100);137      let innerIndirectionTraced = false;138      let outerIndirectionTraced = false;139      function innerIndirection() {140        const interactions = SchedulerTracing.unstable_getCurrent();141        expect(interactions).toMatchInteractions([142          {name: 'outer event', timestamp: 100},143          {name: 'inner event', timestamp: 150},144        ]);145        innerIndirectionTraced = true;146      }147      function outerIndirection() {148        const interactions = SchedulerTracing.unstable_getCurrent();149        expect(interactions).toMatchInteractions([150          {name: 'outer event', timestamp: 100},151        ]);152        outerIndirectionTraced = true;153      }154      SchedulerTracing.unstable_trace('outer event', currentTime, () => {155        // Verify the current traced event156        let interactions = SchedulerTracing.unstable_getCurrent();157        expect(interactions).toMatchInteractions([158          {name: 'outer event', timestamp: 100},159        ]);160        advanceTimeBy(50);161        const wrapperOuterIndirection = SchedulerTracing.unstable_wrap(162          outerIndirection,163        );164        let wrapperInnerIndirection;165        let innerEventTraced = false;166        // Verify that a nested event is properly traced167        SchedulerTracing.unstable_trace('inner event', currentTime, () => {168          interactions = SchedulerTracing.unstable_getCurrent();169          expect(interactions).toMatchInteractions([170            {name: 'outer event', timestamp: 100},171            {name: 'inner event', timestamp: 150},172          ]);173          // Verify that a wrapped outer callback is properly traced174          wrapperOuterIndirection();175          expect(outerIndirectionTraced).toBe(true);176          wrapperInnerIndirection = SchedulerTracing.unstable_wrap(177            innerIndirection,178          );179          innerEventTraced = true;180        });181        expect(innerEventTraced).toBe(true);182        // Verify that the original event is restored183        interactions = SchedulerTracing.unstable_getCurrent();184        expect(interactions).toMatchInteractions([185          {name: 'outer event', timestamp: 100},186        ]);187        // Verify that a wrapped nested callback is properly traced188        wrapperInnerIndirection();189        expect(innerIndirectionTraced).toBe(true);190        done();191      });192    });193    describe('error handling', () => {194      it('should reset state appropriately when an error occurs in a trace callback', done => {195        advanceTimeBy(100);196        SchedulerTracing.unstable_trace('outer event', currentTime, () => {197          expect(() => {198            SchedulerTracing.unstable_trace('inner event', currentTime, () => {199              throw Error('intentional');200            });201          }).toThrow();202          expect(SchedulerTracing.unstable_getCurrent()).toMatchInteractions([203            {name: 'outer event', timestamp: 100},204          ]);205          done();206        });207      });208      it('should reset state appropriately when an error occurs in a wrapped callback', done => {209        advanceTimeBy(100);210        SchedulerTracing.unstable_trace('outer event', currentTime, () => {211          let wrappedCallback;212          SchedulerTracing.unstable_trace('inner event', currentTime, () => {213            wrappedCallback = SchedulerTracing.unstable_wrap(() => {214              throw Error('intentional');215            });216          });217          expect(wrappedCallback).toThrow();218          expect(SchedulerTracing.unstable_getCurrent()).toMatchInteractions([219            {name: 'outer event', timestamp: 100},220          ]);221          done();222        });223      });224    });225    describe('advanced integration', () => {226      it('should return a unique threadID per request', () => {227        expect(SchedulerTracing.unstable_getThreadID()).not.toBe(228          SchedulerTracing.unstable_getThreadID(),229        );230      });231      it('should expose the current set of interactions to be externally manipulated', () => {232        SchedulerTracing.unstable_trace('outer event', currentTime, () => {233          expect(SchedulerTracing.__interactionsRef.current).toBe(234            SchedulerTracing.unstable_getCurrent(),235          );236          SchedulerTracing.__interactionsRef.current = new Set([237            {name: 'override event'},238          ]);239          expect(SchedulerTracing.unstable_getCurrent()).toMatchInteractions([240            {name: 'override event'},241          ]);242        });243      });244      it('should expose a subscriber ref to be externally manipulated', () => {245        SchedulerTracing.unstable_trace('outer event', currentTime, () => {246          expect(SchedulerTracing.__subscriberRef).toEqual({247            current: null,248          });249        });250      });251    });252  });253  describe('enableSchedulerTracing disabled', () => {254    beforeEach(() => loadModules({enableSchedulerTracing: false}));255    it('should return the value of a traced function', () => {256      expect(257        SchedulerTracing.unstable_trace('arbitrary', currentTime, () => 123),258      ).toBe(123);259    });260    it('should return the value of a wrapped function', () => {261      let wrapped;262      SchedulerTracing.unstable_trace('arbitrary', currentTime, () => {263        wrapped = SchedulerTracing.unstable_wrap(() => 123);264      });265      expect(wrapped()).toBe(123);266    });267    it('should return null for traced interactions', () => {268      expect(SchedulerTracing.unstable_getCurrent()).toBe(null);269    });270    it('should execute traced callbacks', done => {271      SchedulerTracing.unstable_trace('some event', currentTime, () => {272        expect(SchedulerTracing.unstable_getCurrent()).toBe(null);273        done();274      });275    });276    it('should return the value of a clear function', () => {277      expect(SchedulerTracing.unstable_clear(() => 123)).toBe(123);278    });279    it('should execute wrapped callbacks', done => {280      const wrappedCallback = SchedulerTracing.unstable_wrap(() => {281        expect(SchedulerTracing.unstable_getCurrent()).toBe(null);282        done();283      });284      wrappedCallback();285    });286    describe('advanced integration', () => {287      it('should not create unnecessary objects', () => {288        expect(SchedulerTracing.__interactionsRef).toBe(null);289      });290    });291  });...

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({ headless: false });4  const context = await browser.newContext();5  const page = await context.newPage();6  const element = await page.unstable_getCurrent();7  console.log(element);8  await browser.close();9})();10{11  _initializer: {12    _initializer: {13      _initializer: {14        _initializer: {15        },16      },17    },18  },19}20Error: Protocol error (DOM.resolveNode): Cannot find context with specified id21page.evaluate(() => document.activeElement)22page.evaluate(() => {23})

Using AI Code Generation

1const { chromium } = require("playwright");2(async () => {3  const browser = await chromium.launch({4  });5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.screenshot({ path: "example.png" });8  await browser.close();9})();10const { chromium } = require("playwright");11(async () => {12  const browser = await chromium.launch({13  });14  const context = await browser.newContext();15  const page = await context.newPage();16  await page.screenshot({ path: "example.png" });17  await browser.close();18})();19const { chromium } = require("playwright");20(async () => {21  const browser = await chromium.launch({22  });23  const context = await browser.newContext();24  const page = await context.newPage();25  await page.screenshot({ path: "example.png" });26  await browser.close();27})();28const { chromium } = require("playwright");29(async () => {30  const browser = await chromium.launch({31  });32  const context = await browser.newContext();33  const page = await context.newPage();34  await page.screenshot({ path: "example.png" });35  await browser.close();36})();37const { chromium } = require("playwright");38(async () => {39  const browser = await chromium.launch({40  });41  const context = await browser.newContext();42  const page = await context.newPage();43  await page.screenshot({ path: "example.png" });44  await browser.close();45})();46const { chromium } = require("

Using AI Code Generation

1const { chromium, webkit, firefox } = require('playwright');2const browser = await chromium.launch({ headless: false });3const context = await browser.newContext();4const page = await context.newPage();5const internalApi = page._delegate._channel;6const response = await internalApi.send('unstable_getCurrent');7console.log(response);8const { chromium, webkit, firefox } = require('playwright');9const browser = await chromium.launch({ headless: false });10const context = await browser.newContext();11const page = await context.newPage();12const internalApi = page._delegate._channel;13const response = await internalApi.send('unstable_getCurrent');14console.log(response);15const { chromium, webkit, firefox } = require('playwright');16const browser = await chromium.launch({ headless: false });17const context = await browser.newContext();18const page = await context.newPage();19const internalApi = page._delegate._channel;20const response = await internalApi.send('unstable_getCurrent');21console.log(response);22const { chromium, webkit, firefox } = require('playwright');23const browser = await chromium.launch({ headless: false });24const context = await browser.newContext();25const page = await context.newPage();26const internalApi = page._delegate._channel;27const response = await internalApi.send('unstable_getCurrent');28console.log(response);29const { chromium, webkit, firefox } = require('playwright');30const browser = await chromium.launch({ headless: false });31const context = await browser.newContext();32const page = await context.newPage();33const internalApi = page._delegate._channel;34const response = await internalApi.send('unstable_getCurrent');35console.log(response);36const { chromium, webkit, firefox } = require('playwright');37const browser = await chromium.launch({ headless: false });

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  const internalContext = await page.context()._context;6  const internalPage = await internalContext._page;7  const internalFrame = await internalPage.mainFrame();8  const internalElement = await internalFrame.$('text=Get started');9  const internalHandle = await internalElement._elementHandle;10  const internal = await internalHandle._internalAPI();11  const internalElement2 = await internal.unstable_getCurrent();12  console.log(internalElement2);13  await browser.close();14})();15const { chromium } = require('playwright');16(async () => {17  const browser = await chromium.launch();18  const page = await browser.newPage();19  const internalContext = await page.context()._context;20  const internalPage = await internalContext._page;21  const internalFrame = await internalPage.mainFrame();22  const internalElement = await internalFrame.$('text=Get started');23  const internalHandle = await internalElement._elementHandle;24  const internal = await internalHandle._internalAPI();25  const internalElement2 = await internal.unstable_getCurrent();26  console.log(internalElement2);27  await browser.close();28})();29    at Object.getPlaywrightInternal (C:\Users\user\Documents\playwright\test\node_modules\playwright\lib\server\browserType.js:127:15)30    at Object.getPlaywrightInternal (C:\Users\user\Documents\playwright\test\node_modules\playwright\lib\server\browserType.js:127:15)31    at Object.getPlaywrightInternal (C:\Users\user\Documents\playwright\test\node_modules\playwright\lib\server\browserType.js:127:15)32    at Object.getPlaywrightInternal (C:\Users\user\Documents\playwright\test\node_modules\playwright\lib\server\browserType.js:127:

Using AI Code Generation

1const {chromium} = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  const context = await page.context();6  const internalContext = await context._context;7  const internalPage = await page._page;8  const internalBrowser = await browser._browser;9  const internalBrowserContext = await internalBrowser._browserContext;10  const internalPage2 = await internalBrowserContext.newPage();11  const internalPage3 = await internalBrowserContext.newPage();12  const internalPage4 = await internalBrowserContext.newPage();13  const internalPage5 = await internalBrowserContext.newPage();14  const internalPage6 = await internalBrowserContext.newPage();15  const internalPage7 = await internalBrowserContext.newPage();16  const internalPage8 = await internalBrowserContext.newPage();17  const internalPage9 = await internalBrowserContext.newPage();18  const internalPage10 = await internalBrowserContext.newPage();19  const internalPage11 = await internalBrowserContext.newPage();20  const internalPage12 = await internalBrowserContext.newPage();21  const internalPage13 = await internalBrowserContext.newPage();22  const internalPage14 = await internalBrowserContext.newPage();23  const internalPage15 = await internalBrowserContext.newPage();24  const internalPage16 = await internalBrowserContext.newPage();25  const internalPage17 = await internalBrowserContext.newPage();26  const internalPage18 = await internalBrowserContext.newPage();27  const internalPage19 = await internalBrowserContext.newPage();28  const internalPage20 = await internalBrowserContext.newPage();29  const internalPage21 = await internalBrowserContext.newPage();30  const internalPage22 = await internalBrowserContext.newPage();31  const internalPage23 = await internalBrowserContext.newPage();32  const internalPage24 = await internalBrowserContext.newPage();33  const internalPage25 = await internalBrowserContext.newPage();34  const internalPage26 = await internalBrowserContext.newPage();35  const internalPage27 = await internalBrowserContext.newPage();36  const internalPage28 = await internalBrowserContext.newPage();37  const internalPage29 = await internalBrowserContext.newPage();38  const internalPage30 = await internalBrowserContext.newPage();39  const internalPage31 = await internalBrowserContext.newPage();40  const internalPage32 = await internalBrowserContext.newPage();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3    const browser = await chromium.launch();4    const page = await browser.newPage();5    const version = await page.evaluate(() => {6        return window.playwright._impl._electron._electron.app.getVersion();7    });8    console.log('Playwright version is: ' + version);9    await browser.close();10})();

Using AI Code Generation

1const { chromium } = require('playwright');2const { unstable_getCurrent } = require('playwright/lib/internal/api');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const current_page = unstable_getCurrent(page);8  console.log(current_page);9  await browser.close();10})();11const { chromium } = require('playwright');12const { unstable_getCurrent } = require('playwright/lib/internal/api');13(async () => {14  const browser = await chromium.launch();15  const context = await browser.newContext();16  const page = await context.newPage();17  const current_page = unstable_getCurrent(page);18  console.log(current_page);19  await browser.close();20})();21const { chromium } = require('playwright');22const { unstable_getCurrent } = require('playwright/lib/internal/api');23(async () => {24  const browser = await chromium.launch();25  const context = await browser.newContext();26  const page = await context.newPage();27  const current_page = unstable_getCurrent(page);28  console.log(current_page);29  await browser.close();30})();31const { chromium } = require('playwright');32const { unstable_getCurrent } = require('playwright/lib/internal/api');33(async () => {34  const browser = await chromium.launch();

StackOverFlow community discussions

Questions

Discussion

How to run a list of test suites in a single file concurrently in jest?

Running Playwright in Azure Function

Is it possible to get the selector from a locator object in playwright?

firefox browser does not start in playwright

Jest + Playwright - Test callbacks of event-based DOM library

Assuming you are not running test with the --runinband flag, the simple answer is yes but it depends ????

There is a pretty comprehensive GitHub issue jest#6957 that explains certain cases of when tests are run concurrently or in parallel. But it seems to depend on a lot of edge cases where jest tries its best to determine the fastest way to run the tests given the circumstances.

To my knowledge there is no way to force jest to run in parallel.

Aside

Have you considered using playwright instead of puppeteer with jest? Playwright has their own internally built testing library called @playwright/test that is used in place of jest with a similar API. This library allows for explicitly defining test groups in a single file to run in parallel (i.e. test.describe.parallel) or serially (i.e. test.describe.serial). Or even to run all tests in parallel via a config option.

// parallel
test.describe.parallel('group', () => {
  test('runs in parallel 1', async ({ page }) => {});
  test('runs in parallel 2', async ({ page }) => {});
});

// serial
test.describe.serial('group', () => {
  test('runs first', async ({ page }) => {});
  test('runs second', async ({ page }) => {});
});

https://stackoverflow.com/questions/73497773/how-to-run-a-list-of-test-suites-in-a-single-file-concurrently-in-jest

Well this is one way, but not sure if it will work for all possible locators!.

// Get a selector from a playwright locator
import { Locator } from "@playwright/test";
export function extractSelector(locator: Locator) {
    const selector = locator.toString();
    const parts = selector.split("@");
    if (parts.length !== 2) { throw Error("extractSelector: susupect that this is not a locator"); }
    if (parts[0] !== "Locator") { throw Error("extractSelector: did not find locator"); }
    return parts[1];
}

https://stackoverflow.com/questions/72044959/is-it-possible-to-get-the-selector-from-a-locator-object-in-playwright

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

This question is quite close to a "need more focus" question. But let's try to give it some focus:

Does Playwright has access to the cPicker object on the page? Does it has access to the window object?

Yes, you can access both cPicker and the window object inside an evaluate call.

Should I trigger the events from the HTML file itself, and in the callbacks, print in the DOM the result, in some dummy-element, and then infer from that dummy element text that the callbacks fired?

Exactly, or you can assign values to a javascript variable:

const cPicker = new ColorPicker({
  onClickOutside(e){
  },
  onInput(color){
    window['color'] = color;
  },
  onChange(color){
    window['result'] = color;
  }
})

And then

it('Should call all callbacks with correct arguments', async() => {
    await page.goto(`http://localhost:5000/tests/visual/basic.html`, {waitUntil:'load'})

    // Wait until the next frame
    await page.evaluate(() => new Promise(requestAnimationFrame))

    // Act
   
    // Assert
    const result = await page.evaluate(() => window['color']);
    // Check the value
})

https://stackoverflow.com/questions/65477895/jest-playwright-test-callbacks-of-event-based-dom-library

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