**suggestion (testing):** Add tests around the new `warningMessage` / `shouldSkipYouTubeDataApi` behavior.

[shakeelmohamed]

suggestion (testing): Add tests around the new warningMessage / shouldSkipYouTubeDataApi behavior.

These helpers now change runtime behavior locally / under file:// (warning banner, skipping YouTube Data API, disabling search/autocomplete), but none of the tests assert this.

Please add coverage for at least:

• When shouldSkipYouTubeDataApi() is true (as in the current Playwright setup), .warning-message is rendered with the expected text.
• Search/autocomplete in this mode: typeahead is not attached to .search-input, and search still supports direct video ID/URL playback.

You can either extend this Form suite or add a small e2e suite that:

• Waits for .warning-message and asserts its text.
• Verifies autocomplete is disabled (e.g., window.getAutocompleteSuggestions is not called or typeahead-specific DOM is absent on .search-input).

Suggested implementation:

        await page.goto(indexHTMLURL);

        // Test that warning message is rendered when YouTube Data API is skipped
        const warningElement = await page.waitForSelector(".warning-message", { state: "visible" });
        const warningText = await warningElement.textContent();
        assert.ok(
          warningText && warningText.toLowerCase().includes("youtube data api"),
          `Warning text should mention YouTube Data API, got: "${warningText}"`
        );

        // Test that error element exists and can be controlled
        const errorElement = await page.$(".error-message");
        assert.ok(errorElement, "Error element should exist");

        // Verify that autocomplete/typeahead is disabled when skipping YouTube Data API
        const searchInput = await page.$(".search-input");
        assert.ok(searchInput, "Search input should exist");

        // Common typeahead.js DOM hooks: no menu / hint inputs should be present
        const typeaheadMenu = await page.$(".tt-menu");
        assert.strictEqual(
          typeaheadMenu,
          null,
          "Typeahead menu (.tt-menu) should not be present when YouTube Data API is skipped"
        );

        const typeaheadHint = await page.$(".tt-hint");
        assert.strictEqual(
          typeaheadHint,
          null,
          "Typeahead hint input (.tt-hint) should not be present when YouTube Data API is skipped"
        );

        // Verify that direct video ID / URL playback still works without autocomplete
        const directVideoId = "dQw4w9WgXcQ";
        await searchInput.fill(directVideoId);
        await searchInput.press("Enter");

        const playerFrame = await page.waitForSelector(
          'iframe[src*="youtube.com"], iframe[src*="youtube-nocookie.com"]',
          { timeout: 10000 }
        );
        assert.ok(playerFrame, "Player iframe should be rendered for direct video ID search");

        // Test that we can programmatically show/hide the error

1. If your actual warning copy differs, replace the includes("youtube data api") check with a stricter assertion on the exact expected string.
2. If your autocomplete implementation uses different DOM markers than .tt-menu / .tt-hint, update those selectors to match the actual typeahead-specific elements added in the non-shouldSkipYouTubeDataApi path.
3. If the search interaction in this form uses a different trigger than pressing Enter on .search-input (e.g., clicking a search button or submitting a specific form), adjust the fill/press logic accordingly to follow the existing tests in test/form.js.
4. If the player is rendered with a non-iframe container or a different selector than a YouTube iframe, update the waitForSelector to use the actual player element/selector used elsewhere in your e2e tests.

Originally posted by @sourcery-ai[bot] in #447 (comment)