[TestGru] Add unit test for lib/compiler/defaults/swc-defaults.ts

[gru-agent]

Trigger Info

Trigger Type	Triggered By	Source Pull Request	Assignment
Manual	gengu	1	Detail

Summary

This PR introduces a new test suite for the swcDefaultsFactory function, which is responsible for generating default SWC options based on TypeScript compiler options and a given configuration. The test suite is implemented using Vitest and includes the following test cases:

1. Default SWC Options Generation: Verifies that the function correctly generates SWC options and CLI options when provided with specific TypeScript options and configuration.

2. Handling Undefined Inputs: Ensures that the function can handle cases where both TypeScript options and configuration are undefined, returning appropriate default values.

3. Windows Path Conversion: Tests the conversion of Windows-style paths to POSIX format in the cliOptions.outDir.

4. Inline Source Map Handling: Checks the function's ability to handle the inlineSourceMap option in TypeScript options, ensuring it sets the sourceMaps option to 'inline'.

5. Builder Options Override: Validates that CLI options can be overridden by builder options specified in the configuration, particularly for watch and sync options.

These tests aim to ensure the robustness and correctness of the swcDefaultsFactory function in various scenarios.

Coverage

The change in coverage value, such as: 0% -> 50%, indicates that the coverage was 0% before writing the tests and 50% after writing them.

https://web.dev/articles/ta-code-coverage

Type	Change
lines	0% -> 100% 🔺
functions	0% -> 100% 🔺
statements	0% -> 100% 🔺
branches	0% -> 100% 🔺

Test Statuses

Status	Change
passed	0 -> 5 🔺
failed	0 -> 0
skipped	0 -> 0

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