Issue Running Custom Theia Executable in Playwright Electron Test

[sophieminasyan]

I am trying to test a custom Theia Desktop application executable (.exe) using Playwright's Electron API, but I keep running into an issue. The test script starts executing, and I can see that the executable is running in the background, but Playwright never detects the window.

Here's the test script I am using:

const executablePath = "path/to/executable.exe";
test.describe('Theia Application Testing', () => {
    test('Do Test', async () => {
        console.log("Before");
        const electronApp = await electron.launch({ 
            executablePath: executablePath, 
            args: ['-c', dataPath] 
        });
        console.log("After"); // This log never appears
        const window = await electronApp.firstWindow();
    });
});

[planger]

I'm not sure if that helps, but when we run the Theia Electron app for Playwright, we disable the "early window" and splash screen (see https://github.com/eclipse-theia/theia/blob/master/examples/playwright/src/theia-app-loader.ts#L153):

process.env.THEIA_ELECTRON_NO_EARLY_WINDOW = '1';
process.env.THEIA_NO_SPLASH = 'true';

Maybe this helps?