fn test_time_macro_short_read()

in src/util.rs [1051:1127]

• 70 lines of code
• 6 McCabe index (conditional complexity)

    fn test_time_macro_short_read() {
        // Normal "read" should succeed
        let mut finder = TimeMacroFinder::new();
        finder.find_time_macros(b"__TIME__");
        assert!(finder.found_time());

        // So should a partial "read"
        let mut finder = TimeMacroFinder::new();
        finder.find_time_macros(b"__");
        assert!(!finder.found_time());
        finder.find_time_macros(b"TIME__");
        assert!(finder.found_time());

        // So should a partial "read" later down the line
        let mut finder = TimeMacroFinder::new();
        finder.find_time_macros(b"Something or other larger than the haystack");
        finder.find_time_macros(b"__");
        assert!(!finder.found_time());
        finder.find_time_macros(b"TIME__");
        assert!(finder.found_time());

        // Even if the last "read" is large
        let mut finder = TimeMacroFinder::new();
        finder.find_time_macros(b"Something or other larger than the haystack");
        finder.find_time_macros(b"__");
        assert!(!finder.found_time());
        finder.find_time_macros(b"TIME__ something or other larger than the haystack");
        assert!(finder.found_time());

        // Pathological case
        let mut finder = TimeMacroFinder::new();
        finder.find_time_macros(b"__");
        assert!(!finder.found_time());
        finder.find_time_macros(b"TI");
        assert!(!finder.found_time());
        finder.find_time_macros(b"ME");
        assert!(!finder.found_time());
        finder.find_time_macros(b"__");
        assert!(finder.found_time());

        // Odd-numbered pathological case
        let mut finder = TimeMacroFinder::new();
        finder.find_time_macros(b"This is larger than the haystack __");
        assert!(!finder.found_time());
        finder.find_time_macros(b"TI");
        assert!(!finder.found_time());
        finder.find_time_macros(b"ME");
        assert!(!finder.found_time());
        finder.find_time_macros(b"__");
        assert!(finder.found_time());

        // Sawtooth length pathological case
        let mut finder = TimeMacroFinder::new();
        finder.find_time_macros(b"This is larger than the haystack __");
        assert!(!finder.found_time());
        finder.find_time_macros(b"TI");
        assert!(!finder.found_time());
        finder.find_time_macros(b"ME__ This is larger than the haystack");
        assert!(finder.found_time());
        assert!(!finder.found_timestamp());
        finder.find_time_macros(b"__");
        assert!(!finder.found_timestamp());
        finder.find_time_macros(b"TIMESTAMP__ This is larger than the haystack");
        assert!(finder.found_timestamp());

        // Odd-numbered sawtooth length pathological case
        let mut finder = TimeMacroFinder::new();
        finder.find_time_macros(b"__");
        assert!(!finder.found_time());
        finder.find_time_macros(b"TIME__ This is larger than the haystack");
        assert!(finder.found_time());
        assert!(!finder.found_timestamp());
        finder.find_time_macros(b"__");
        assert!(!finder.found_timestamp());
        finder.find_time_macros(b"TIMESTAMP__ This is larger than the haystack");
        assert!(finder.found_timestamp());
    }