TEST: Add tests

[ry2x]

This pull request significantly expands and improves the test coverage for the project, especially around configuration serialization/deserialization and parser edge cases. It introduces a new test module for configuration roundtrip tests, adds comprehensive parser edge case tests, and improves documentation of existing tests. Additionally, it updates development dependencies to support the new tests.

New and Expanded Test Coverage:

• Added src/tests/config_roundtrip.rs with tests for UserConfig serialization/deserialization, including roundtrip, custom values, partial configs, and format stability.
• Introduced src/tests/parser_edge.rs to cover edge cases in the parser, such as empty input, missing/invalid fields, unknown fields, malformed lines, whitespace handling, and real-world output.
• Added src/tests/source_error.rs to test error handling and output of fetch_hyprctl_binds.

Test Infrastructure:

• Added tempfile as a development dependency in Cargo.toml to support temporary file creation in tests.
• Registered new test modules in src/tests/mod.rs for configuration roundtrip, parser edge cases, and source error tests.

Test Documentation Improvements:

• Added descriptive doc comments to existing tests in src/tests/icons.rs, src/tests/models.rs, src/tests/parser.rs, and src/tests/table.rs to clarify test intent and improve maintainability. [1] [2] [3] [4] [5] [6]

[Copilot]

Pull request overview

This PR significantly expands test coverage for the project by adding comprehensive tests for configuration serialization, parser edge cases, and error handling. It also improves test documentation by adding descriptive doc comments to existing tests.

Changes:

• Added new test modules for config roundtrip validation, parser edge cases, and source error handling
• Added tempfile as a dev dependency to support temporary file creation in tests
• Enhanced test documentation with descriptive doc comments across all test files

Reviewed changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
Cargo.toml	Added tempfile dev dependency for temporary file handling in tests
src/tests/mod.rs	Registered three new test modules: config_roundtrip, parser_edge, and source_error
src/tests/config_roundtrip.rs	New comprehensive config serialization/deserialization tests with roundtrip validation
src/tests/parser_edge.rs	New parser edge case tests covering empty input, malformed data, and whitespace handling
src/tests/source_error.rs	New test for hyprctl command execution validation
src/tests/parser.rs	Added doc comments to existing parser tests
src/tests/models.rs	Added doc comment to dmenu format export test
src/tests/icons.rs	Added doc comment to icon mapping test
src/tests/table.rs	Added doc comment to NerdFont icon detection test