fn test_update_file_chunk()

in codex-rs/apply-patch/src/parser.rs [422:499]

• 78 lines of code
• 1 McCabe index (conditional complexity)

fn test_update_file_chunk() {
    assert_eq!(
        parse_update_file_chunk(&["bad"], 123, false),
        Err(InvalidHunkError {
            message: "Expected update hunk to start with a @@ context marker, got: 'bad'"
                .to_string(),
            line_number: 123
        })
    );
    assert_eq!(
        parse_update_file_chunk(&["@@"], 123, false),
        Err(InvalidHunkError {
            message: "Update hunk does not contain any lines".to_string(),
            line_number: 124
        })
    );
    assert_eq!(
        parse_update_file_chunk(&["@@", "bad"], 123, false),
        Err(InvalidHunkError {
            message:  "Unexpected line found in update hunk: 'bad'. \
                       Every line should start with ' ' (context line), '+' (added line), or '-' (removed line)".to_string(),
            line_number: 124
        })
    );
    assert_eq!(
        parse_update_file_chunk(&["@@", "*** End of File"], 123, false),
        Err(InvalidHunkError {
            message: "Update hunk does not contain any lines".to_string(),
            line_number: 124
        })
    );
    assert_eq!(
        parse_update_file_chunk(
            &[
                "@@ change_context",
                "",
                " context",
                "-remove",
                "+add",
                " context2",
                "*** End Patch",
            ],
            123,
            false
        ),
        Ok((
            (UpdateFileChunk {
                change_context: Some("change_context".to_string()),
                old_lines: vec![
                    "".to_string(),
                    "context".to_string(),
                    "remove".to_string(),
                    "context2".to_string()
                ],
                new_lines: vec![
                    "".to_string(),
                    "context".to_string(),
                    "add".to_string(),
                    "context2".to_string()
                ],
                is_end_of_file: false
            }),
            6
        ))
    );
    assert_eq!(
        parse_update_file_chunk(&["@@", "+line", "*** End of File"], 123, false),
        Ok((
            (UpdateFileChunk {
                change_context: None,
                old_lines: vec![],
                new_lines: vec!["line".to_string()],
                is_end_of_file: true
            }),
            3
        ))
    );
}