fix e2e flakiness because of timeline API

[sashankaryal]

• Block while buffering is being done before toggling play/pause button

Summary by CodeRabbit

• New Features

  • Improved playback control by ensuring the play action only occurs after buffering is complete.

• Bug Fixes

  • Enhanced reliability of the toggle play functionality by waiting for the buffering state to finish before proceeding.

[coderabbitai]

Walkthrough

The changes introduce a new private method, waitUntilBufferingIsFinished, in the ModalImaAsVideoControlsPom class. This method is designed to ensure that playback actions only proceed after the playhead state transitions from "buffering." The togglePlay method has been updated to invoke this new method prior to checking the playhead status, thereby refining the playback management process. No other methods or public entity signatures were modified.

Changes

File Path	Change Summary
e2e-pw/src/oss/poms/modal/imavid-controls.ts	Added waitUntilBufferingIsFinished method; modified togglePlay to call this new method.

Possibly related PRs

• fix tagger e2e tests #4783: The changes in this PR involve modifications to the toggleOpen method in a related modal class, which may impact the control flow similar to the changes made in the togglePlay method of the ModalImaAsVideoControlsPom class in the main PR.

Suggested reviewers

• benjaminpkane
• CamronStaley

🐰 In the modal's cozy nook,
A method waits, a clever hook.
Buffering fades, the play begins,
With every toggle, joy it spins.
So hop along, let playback flow,
In the world of video, we’ll steal the show! 🎥✨

---

Thank you for using CodeRabbit. We offer it for free to the OSS community and would appreciate your support in helping us grow. If you find it useful, would you consider giving us a shout-out on your favorite social media?

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

🪧 Tips

Chat

There are 3 ways to chat with CodeRabbit:

• Review comments: Directly reply to a review comment made by CodeRabbit. Example:
  • I pushed a fix in commit <commit_id>, please review it.
  • Generate unit testing code for this file.
  • Open a follow-up GitHub issue for this discussion.
• Files and specific lines of code (under the "Files changed" tab): Tag @coderabbitai in a new review comment at the desired location with your query. Examples:
  • @coderabbitai generate unit testing code for this file.
  • @coderabbitai modularize this function.
• PR comments: Tag @coderabbitai in a new PR comment to ask questions about the PR branch. For the best results, please provide a very specific query, as very limited context is provided in this mode. Examples:
  • @coderabbitai gather interesting stats about this repository and render them as a table. Additionally, render a pie chart showing the language distribution in the codebase.
  • @coderabbitai read src/utils.ts and generate unit testing code.
  • @coderabbitai read the files in the src/scheduler package and generate a class diagram using mermaid and a README in the markdown format.
  • @coderabbitai help me debug CodeRabbit configuration file.

Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments.

CodeRabbit Commands (Invoked using PR comments)

• @coderabbitai pause to pause the reviews on a PR.
• @coderabbitai resume to resume the paused reviews.
• @coderabbitai review to trigger an incremental review. This is useful when automatic reviews are disabled for the repository.
• @coderabbitai full review to do a full review from scratch and review all the files again.
• @coderabbitai summary to regenerate the summary of the PR.
• @coderabbitai resolve resolve all the CodeRabbit review comments.
• @coderabbitai configuration to show the current CodeRabbit configuration for the repository.
• @coderabbitai help to get help.

Other keywords and placeholders

• Add @coderabbitai ignore anywhere in the PR description to prevent this PR from being reviewed.
• Add @coderabbitai summary to generate the high-level summary at a specific location in the PR description.
• Add @coderabbitai anywhere in the PR title to generate the title automatically.

Documentation and Community

• Visit our Documentation for detailed information on how to use CodeRabbit.
• Join our Discord Community to get help, request features, and share feedback.
• Follow us on X/Twitter for updates and announcements.

[coderabbitai]

Actionable comments posted: 0

🧹 Outside diff range and nitpick comments (2)

e2e-pw/src/oss/poms/modal/imavid-controls.ts (2)

35-42: Approve implementation with a timeout suggestion.

The waitUntilBufferingIsFinished method effectively addresses the PR objective by implementing a blocking mechanism while buffering is in progress. The use of a data attribute for checking the playhead state is a good practice for e2e testing.

However, consider adding a timeout to prevent potential infinite waits:

private async waitUntilBufferingIsFinished(timeout = 30000) {
  await this.page.waitForFunction(
    () =>
      document
        .querySelector("[data-cy=imavid-playhead]")
        ?.getAttribute("data-playhead-state") !== "buffering",
    { timeout }
  );
}

This ensures the method will throw an error if buffering takes longer than expected, making tests more robust.

---

44-50: Approve changes with a safety mechanism suggestion.

The addition of waitUntilBufferingIsFinished effectively addresses the PR objective by ensuring that play/pause actions don't interfere with buffering. This should help reduce e2e test flakiness.

To further improve robustness, consider adding a safety mechanism to prevent potential infinite loops:

private async togglePlay(maxAttempts = 5) {
  await this.waitUntilBufferingIsFinished();

  let currentPlayHeadStatus = await this.playPauseButton.getAttribute(
    "data-playhead-state"
  );

  const original = currentPlayHeadStatus;
  let attempts = 0;

  while (currentPlayHeadStatus === original && attempts < maxAttempts) {
    await this.playPauseButton.click();
    currentPlayHeadStatus = await this.playPauseButton.getAttribute(
      "data-playhead-state"
    );
    attempts++;
  }

  if (attempts >= maxAttempts) {
    throw new Error("Failed to toggle play state after maximum attempts");
  }
}

This ensures the method will throw an error if it fails to toggle the play state after a certain number of attempts, preventing potential infinite loops.

📜 Review details

Configuration used: .coderabbit.yaml
Review profile: CHILL

📥 Commits

Files that changed from the base of the PR and between eb7ae14 and 7747d78.

📒 Files selected for processing (1)

• e2e-pw/src/oss/poms/modal/imavid-controls.ts (1 hunks)

🧰 Additional context used

📓 Path-based instructions (1)

e2e-pw/src/oss/poms/modal/imavid-controls.ts (1)

Pattern **/*.{ts,tsx}: Review the Typescript and React code for conformity with best practices in React, Recoil, Graphql, and Typescript. Highlight any deviations.

[benjaminpkane]

LGTM