nextesttoml

nextesttoml is a configuration file format used by the nextest testing framework. It allows users to customize various aspects of their test execution, including test selection, parallelism, and reporting. The format is based on TOML (Tom's Obvious, Minimal Language), a widely adopted configuration file format known for its readability and simplicity.

Key features of nextesttoml include the ability to define test binaries, specify arguments for those binaries, and configure environment variables. Users can also group tests, set timeouts for individual tests or entire test suites, and control how test results are displayed. For more complex projects, nextesttoml supports conditional configurations, allowing different settings to be applied based on the operating system, architecture, or other criteria. This flexibility makes it suitable for a wide range of testing scenarios.

The structure of a nextesttoml file is hierarchical, with sections and key-value pairs. For instance, a common section might be `[test_binary]` which defines a specific executable to be run as part of the test suite. Within this section, one could specify the path to the binary, its working directory, and any command-line arguments it requires. Another example is the `[run]` section, which allows for global settings like the number of parallel jobs to execute.

nextesttoml aims to provide a clear and organized way to manage test configurations, reducing the need for complex command-line arguments and enabling reproducible test runs. The TOML format's human-readable nature also makes it easier for teams to understand and maintain their testing setups over time.