To execute tests for the docker/go-metrics project, follow the steps outlined below. The instructions assume that you have a working Go environment and Docker is installed.

Step 1: Clone the Repository

Begin by cloning the docker/go-metrics repository to your local machine. This can be accomplished using the following command:

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

Change to the project directory:

cd go-metrics

Step 2: Ensure Dependencies are Available

As the project uses Go modules, you can ensure all necessary dependencies are pulled in with:

go mod tidy

This will analyze the source code and automatically add missing module dependencies and remove unused ones.

Step 3: Run Tests

To run the tests associated with the project, utilize the go test command. Test cases are typically found in files with the _test.go suffix. Execute the following command to run all tests:

go test ./...

This command will search for all test files across all packages in the project and execute them.

Step 4: Run Tests with Coverage (Optional)

If you want to check code coverage during your tests, the command can be modified as follows:

go test -cover ./...

The -cover flag will report the percentage of code coverage achieved by the tests, allowing for insights into which portions of the code are well-tested and which are not.

Step 5: Running Tests in Docker (Optional)

For a consistent testing environment, the tests can also be executed within a Docker container. Create a Dockerfile at the root of your project:

FROM golang:1.19

WORKDIR /app

COPY go.mod ./
COPY go.sum ./
RUN go mod download

COPY . .

CMD ["go", "test", "./..."]

Then build the Docker image using:

docker build -t go-metrics-test .

Finally, run the tests within a Docker container:

docker run --rm go-metrics-test

This will execute the tests in an isolated Docker environment, ensuring that dependencies and configurations match those in the container.

Summary

To run the tests for docker/go-metrics, clone the repository, ensure dependencies are installed, and execute the tests using the go test command. Optionally, tests can be run with coverage or inside a Docker container for an isolated environment.

Sources: GitHub - docker/go-metrics