To run tests for the docker/go-metrics project, follow the detailed steps outlined below. This process assumes that you have Go installed on your system, and that you have cloned the repository.

Prerequisites

1. Ensure that you have Go installed. You can verify your installation by running:

   go version
   

2. Clone the docker/go-metrics repository if you haven’t done so:

   git clone https://github.com/docker/go-metrics.git
   

3. Navigate to the project directory:

   cd go-metrics
   

Running Tests

Step 1: Setting Up Go Modules

Since the project uses Go modules, ensure that you have the module initialized. If you cloned the repository, the module should already be initialized as indicated by the go.mod file in the project root. You do not need to use the -mod=vendor flag.

Step 2: Installing Dependencies

Run the following command to download any necessary dependencies:

go mod tidy

This command ensures that all the dependencies are fetched and synchronized with your go.mod file.

Step 3: Running Tests

To run the tests for the project, you can use the go test command. The tests should be located in files that end with _test.go. Run the following command in the root directory of the project:

go test ./...

This command will run all tests in the current module and its subdirectories.

Step 4: Verbose Output

If you want to see more detailed output during the test runs, you can add the -v flag:

go test -v ./...

This output will provide details about each test being executed, including which tests passed and which failed.

Step 5: Running Specific Tests

If you wish to run a specific test file or test function, you can use the -run flag followed by the name of the test. For example:

go test -run TestFunctionName

Replace TestFunctionName with the actual name of the test function you want to run.

Step 6: Testing with Coverage

To check test coverage, you can run:

go test -cover ./...

This command will display the coverage percentage of your unit tests.

Step 7: Continuous Integration

For continuous integration pipelines, you can include the following command in your CI configuration to ensure tests are run:

go test ./...

Ensure you set up any necessary environment variables or configurations needed for your tests to run accurately.

Conclusion

Following the steps outlined above will help you effectively run tests for the docker/go-metrics project. Modify the commands according to your specific test scenarios as necessary.

Sources: GitHub Repository - github.com/docker/go-metrics