Rust Test Runner

Run unit tests for the Rust track of Exercism.

See:

• docker.md
• interface.md

General Architecture

• The test runner itself is a simple shell script: run.sh
• The rust project in this repo is a filter which transforms Cargo's native testing output to the format expected by Exercism
• The dockerfile contains a multi-stage build: the first stage builds the test script, and the second stage uses it to run the student's solution and test suite and transform the output appropriately

Run the test runner on an exercise using Docker

This script is provided for testing purposes, as it mimics how test runners run in Exercism's production environment.

To run the tests of an arbitrary exercise using the Docker image, do the following:

1. Open a terminal in the project's root
2. Run ./bin/run-in-docker.sh <exercise-slug> <solution-dir> <output-dir>

Once the test runner has finished, its results will be written to <output-dir>/results.json.

Run the tests

To run the tests to verify the behavior of the test runner, do the following:

1. Open a terminal in the project's root
2. Run ./bin/run-tests.sh

These are golden tests that compare the results.json generated by running the current state of the code against the "known good" tests/<test-name>/results.json. All files created during the test run itself are discarded.

When you've made modifications to the code that will result in a new "golden" state, you'll need to generate and commit a new tests/<test-name>/results.json file.

Run the tests using Docker

This script is provided for testing purposes, as it mimics how test runners run in Exercism's production environment.

To run the tests to verify the behavior of the test runner using the Docker image, do the following:

1. Open a terminal in the project's root
2. Run ./bin/run-tests-in-docker.sh

These are golden tests that compare the results.json generated by running the current state of the code against the "known good" tests/<test-name>/results.json. All files created during the test run itself are discarded.

When you've made modifications to the code that will result in a new "golden" state, you'll need to generate and commit a new tests/<test-name>/results.json file.