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Mocha lets us filter tests using the --grep command-line option. This is useful when debugging the AI integration tests, which run against a grid of backend x model. With this grid there may me multiple redundant test runs, and the tests may take >20 minutes.

With this new config, we can isolate the test we want to debug. Before running, VSCode will prompt us for a regex to use for grepping tests by name.
An example grep string would be
Google AI gemini-2.0-flash generateContent: google search grounding.

Without this, I've been manually editing the input test files to be the file with the test I'm running, then manually editing integration/constants.ts to remove the additional backends and model names.

Mocha lets us filter tests using the `--grep` command-line option. This
is useful when debugging the AI integration tests, which run against a
grid of backend x model. With this grid there may me multiple redundant test runs,
and the tests may take >20 minutes.

With this new config, we can isolate the test we want to debug. Before
running, VSCode will prompt us for a regex to use for grepping tests by
name.
An example grep string would be
`Google AI gemini-2.0-flash generateContent: google search grounding`.

Without this, I've been manually editing the input test files to be the
file with the test I'm running, then manually editing
`integration/constants.ts` to remove the additional backends and model
names.
@dlarocque dlarocque requested a review from a team as a code owner November 28, 2025 15:52
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Summary of Changes

Hello @dlarocque, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request streamlines the debugging process for AI integration tests by allowing developers to dynamically filter tests using a grep pattern. By integrating a prompt for a search string directly into the VSCode launch configuration, it eliminates the need for manual file edits and reduces the execution time of test suites, making the debugging workflow more efficient and targeted.

Highlights

  • Improved Debugging Workflow: Introduced a new configuration in .vscode/launch.json that allows developers to filter AI integration tests using a --grep string before execution.
  • Interactive Test Filtering: VSCode will now prompt the user for a regular expression (grep pattern) to apply to test names, enabling targeted debugging of specific tests.
  • Time Savings: This change significantly reduces the time spent debugging AI integration tests by avoiding the need to run redundant tests across a grid of backends and models, which previously could take over 20 minutes.
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Code Review

This pull request introduces a helpful feature for debugging AI integration tests by adding a VS Code launch configuration that prompts for a grep pattern. This allows developers to easily filter and run specific tests, improving the debugging workflow. The implementation is straightforward and correct. I have a couple of minor suggestions to improve the usability of the prompt.

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google-oss-bot commented Nov 28, 2025

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google-oss-bot commented Nov 28, 2025

Size Analysis Report 1

Affected Products

No changes between base commit (e6415dd) and merge commit (c9f2026).

Test Logs

  1. https://storage.googleapis.com/firebase-sdk-metric-reports/VLk3TelGls.html

@dlarocque dlarocque merged commit 9101b46 into main Dec 1, 2025
38 checks passed
@dlarocque dlarocque deleted the dl/ai-debug-grep-input branch December 1, 2025 20:28
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3 participants