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integration-tests.md

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Integration Tests

This document provides information about the integration testing framework used in this project.

Overview

The integration tests are designed to validate the end-to-end functionality of the Gemini CLI. They execute the built binary in a controlled environment and verify that it behaves as expected when interacting with the file system.

These tests are located in the integration-tests directory and are run using a custom test runner.

Running the tests

The integration tests are not run as part of the default npm run test command. They must be run explicitly using the npm run test:integration:all script.

The integration tests can also be run using the following shortcut:

npm run test:e2e

Running a specific set of tests

To run a subset of test files, you can use npm run <integration test command> <file_name1> .... where is either test:e2e or test:integration* and <file_name> is any of the .test.js files in the integration-tests/ directory. For example, the following command runs list_directory.test.js and write_file.test.js:

npm run test:e2e list_directory write_file

Running a single test by name

To run a single test by its name, use the --test-name-pattern flag:

npm run test:e2e -- --test-name-pattern "reads a file"

Running all tests

To run the entire suite of integration tests, use the following command:

npm run test:integration:all

Sandbox matrix

The all command will run tests for no sandboxing, docker and podman. Each individual type can be run using the following commands:

npm run test:integration:sandbox:none
npm run test:integration:sandbox:docker
npm run test:integration:sandbox:podman

Diagnostics

The integration test runner provides several options for diagnostics to help track down test failures.

Keeping test output

You can preserve the temporary files created during a test run for inspection. This is useful for debugging issues with file system operations.

To keep the test output, you can either use the --keep-output flag or set the KEEP_OUTPUT environment variable to true.

# Using the flag
npm run test:integration:sandbox:none -- --keep-output

# Using the environment variable
KEEP_OUTPUT=true npm run test:integration:sandbox:none

When output is kept, the test runner will print the path to the unique directory for the test run.

Verbose output

For more detailed debugging, the --verbose flag streams the real-time output from the gemini command to the console.

npm run test:integration:sandbox:none -- --verbose

When using --verbose and --keep-output in the same command, the output is streamed to the console and also saved to a log file within the test's temporary directory.

The verbose output is formatted to clearly identify the source of the logs:

--- TEST: <file-name-without-js>:<test-name> ---
... output from the gemini command ...
--- END TEST: <file-name-without-js>:<test-name> ---

Linting and formatting

To ensure code quality and consistency, the integration test files are linted as part of the main build process. You can also manually run the linter and auto-fixer.

Running the linter

To check for linting errors, run the following command:

npm run lint

You can include the --fix flag in the command to automatically fix any fixable linting errors:

npm run lint --fix

Directory structure

The integration tests create a unique directory for each test run inside the .integration-tests directory. Within this directory, a subdirectory is created for each test file, and within that, a subdirectory is created for each individual test case.

This structure makes it easy to locate the artifacts for a specific test run, file, or case.

.integration-tests/
└── <run-id>/
    └── <test-file-name>.test.js/
        └── <test-case-name>/
            ├── output.log
            └── ...other test artifacts...

Continuous integration

To ensure the integration tests are always run, a GitHub Actions workflow is defined in .github/workflows/e2e.yml. This workflow automatically runs the integration tests on every pull request and push to the main branch.

The workflow runs the tests in different sandboxing environments to ensure Gemini CLI is tested across each:

  • sandbox:none: Runs the tests without any sandboxing.
  • sandbox:docker: Runs the tests in a Docker container.
  • sandbox:podman: Runs the tests in a Podman container.