revue 2.71.1

A Vue-style TUI framework for Rust with CSS styling
Documentation 
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//! Integration tests for filter utilities
//! Extracted from src/utils/filter.rs

use revue::utils::filter::*;

#[test]
fn test_fuzzy_match() {
    assert!(FilterMode::Fuzzy.matches("Hello World", "hw"));
    assert!(FilterMode::Fuzzy.matches("Hello World", "HW"));
    assert!(FilterMode::Fuzzy.matches("Hello World", "helloworld"));
    assert!(!FilterMode::Fuzzy.matches("Hello World", "xyz"));
}

#[test]
fn test_fuzzy_match_order_matters() {
    // Pattern chars must appear in order
    assert!(FilterMode::Fuzzy.matches("abcdef", "ace"));
    assert!(!FilterMode::Fuzzy.matches("abcdef", "eca")); // wrong order
}

#[test]
fn test_fuzzy_match_case_insensitive() {
    assert!(FilterMode::Fuzzy.matches("HelloWorld", "hw"));
    assert!(FilterMode::Fuzzy.matches("helloworld", "HW"));
    assert!(FilterMode::Fuzzy.matches("HELLO", "hello"));
}

#[test]
fn test_fuzzy_match_single_char() {
    assert!(FilterMode::Fuzzy.matches("Hello", "h"));
    assert!(FilterMode::Fuzzy.matches("Hello", "e"));
    assert!(FilterMode::Fuzzy.matches("Hello", "o"));
    assert!(!FilterMode::Fuzzy.matches("Hello", "x"));
}

#[test]
fn test_prefix_match() {
    assert!(FilterMode::Prefix.matches("Hello World", "hel"));
    assert!(FilterMode::Prefix.matches("Hello World", "Hello"));
    assert!(!FilterMode::Prefix.matches("Hello World", "World"));
}

#[test]
fn test_prefix_match_case_insensitive() {
    assert!(FilterMode::Prefix.matches("Hello", "HEL"));
    assert!(FilterMode::Prefix.matches("HELLO", "hel"));
    assert!(FilterMode::Prefix.matches("hello", "HEL"));
}

#[test]
fn test_prefix_match_full_string() {
    assert!(FilterMode::Prefix.matches("Hello", "Hello"));
    assert!(FilterMode::Prefix.matches("Hello", "hello"));
}

#[test]
fn test_contains_match() {
    assert!(FilterMode::Contains.matches("Hello World", "wor"));
    assert!(FilterMode::Contains.matches("Hello World", "llo"));
    assert!(!FilterMode::Contains.matches("Hello World", "xyz"));
}

#[test]
fn test_contains_match_at_start() {
    assert!(FilterMode::Contains.matches("Hello World", "Hel"));
    assert!(FilterMode::Contains.matches("Hello World", "hel"));
}

#[test]
fn test_contains_match_at_end() {
    assert!(FilterMode::Contains.matches("Hello World", "rld"));
    assert!(FilterMode::Contains.matches("Hello World", "RLD"));
}

#[test]
fn test_contains_match_full_string() {
    assert!(FilterMode::Contains.matches("Hello", "Hello"));
    assert!(FilterMode::Contains.matches("Hello", "hello"));
}

#[test]
fn test_exact_match() {
    assert!(FilterMode::Exact.matches("Hello", "hello"));
    assert!(FilterMode::Exact.matches("Hello", "HELLO"));
    assert!(!FilterMode::Exact.matches("Hello World", "Hello"));
}

#[test]
fn test_exact_match_partial_fails() {
    assert!(!FilterMode::Exact.matches("Hello World", "Hello"));
    assert!(!FilterMode::Exact.matches("Hello", "Hel"));
    assert!(!FilterMode::Exact.matches("Hello", "ello"));
}

#[test]
fn test_none_match() {
    assert!(FilterMode::None.matches("anything", "pattern"));
    assert!(FilterMode::None.matches("", "pattern"));
}

#[test]
fn test_none_match_always_true() {
    assert!(FilterMode::None.matches("", ""));
    assert!(FilterMode::None.matches("abc", "xyz"));
    assert!(FilterMode::None.matches("短い", "long pattern"));
}

#[test]
fn test_empty_pattern() {
    assert!(FilterMode::Fuzzy.matches("Hello", ""));
    assert!(FilterMode::Prefix.matches("Hello", ""));
    assert!(FilterMode::Contains.matches("Hello", ""));
    assert!(FilterMode::Exact.matches("Hello", ""));
    assert!(FilterMode::None.matches("Hello", ""));
}

#[test]
fn test_empty_text() {
    assert!(!FilterMode::Fuzzy.matches("", "a"));
    assert!(!FilterMode::Prefix.matches("", "a"));
    assert!(!FilterMode::Contains.matches("", "a"));
    assert!(!FilterMode::Exact.matches("", "a"));
    assert!(FilterMode::None.matches("", "a")); // None always matches
}

#[test]
fn test_both_empty() {
    assert!(FilterMode::Fuzzy.matches("", ""));
    assert!(FilterMode::Prefix.matches("", ""));
    assert!(FilterMode::Contains.matches("", ""));
    assert!(FilterMode::Exact.matches("", ""));
    assert!(FilterMode::None.matches("", ""));
}

#[test]
fn test_filter_mode_default() {
    assert_eq!(FilterMode::default(), FilterMode::Fuzzy);
}

#[test]
fn test_filter_mode_clone() {
    let mode = FilterMode::Prefix;
    let cloned = mode;
    assert_eq!(mode, cloned);
}

#[test]
fn test_filter_mode_debug() {
    assert_eq!(format!("{:?}", FilterMode::Fuzzy), "Fuzzy");
    assert_eq!(format!("{:?}", FilterMode::Prefix), "Prefix");
    assert_eq!(format!("{:?}", FilterMode::Contains), "Contains");
    assert_eq!(format!("{:?}", FilterMode::Exact), "Exact");
    assert_eq!(format!("{:?}", FilterMode::None), "None");
}

#[test]
fn test_special_characters() {
    assert!(FilterMode::Contains.matches("hello-world", "-"));
    assert!(FilterMode::Contains.matches("hello_world", "_"));
    assert!(FilterMode::Prefix.matches("[test]", "["));
    assert!(FilterMode::Fuzzy.matches("a.b.c", "abc"));
}

#[test]
fn test_whitespace() {
    assert!(FilterMode::Contains.matches("hello world", " "));
    assert!(FilterMode::Fuzzy.matches("hello world", "hw"));
    assert!(FilterMode::Prefix.matches("  hello", "  "));
}

#[test]
fn test_numbers() {
    assert!(FilterMode::Fuzzy.matches("test123", "t13"));
    assert!(FilterMode::Prefix.matches("123abc", "123"));
    assert!(FilterMode::Contains.matches("abc123def", "123"));
    assert!(FilterMode::Exact.matches("123", "123"));
}

// Non-ASCII Unicode tests - proper case folding

#[test]
fn test_unicode_accented_e() {
    // É (U+00C9) should match é (U+00E9) case-insensitively
    assert!(FilterMode::Exact.matches("Éléphant", "éléphant"));
    assert!(FilterMode::Exact.matches("ÉLÉPHANT", "éléphant"));
    assert!(FilterMode::Exact.matches("éléphant", "ÉLÉPHANT"));
    assert!(FilterMode::Prefix.matches("Éléphant", "él"));
    assert!(FilterMode::Contains.matches("Éléphant", "lé"));
}

#[test]
fn test_unicode_german_umlaut() {
    // Ä should match ä case-insensitively
    assert!(FilterMode::Exact.matches("Ärger", "ärger"));
    assert!(FilterMode::Prefix.matches("Ärger", "är"));
    assert!(FilterMode::Contains.matches("Ärger", "rg"));
}

#[test]
fn test_unicode_cjk() {
    // CJK characters don't have case, but should still match
    assert!(FilterMode::Exact.matches("你好", "你好"));
    assert!(FilterMode::Prefix.matches("你好世界", "你好"));
    assert!(FilterMode::Contains.matches("你好世界", "好"));
}

#[test]
fn test_unicode_mixed_script() {
    // Mixed ASCII and non-ASCII
    assert!(FilterMode::Exact.matches("Café", "café"));
    assert!(FilterMode::Contains.matches("Café au lait", "fé"));
    assert!(FilterMode::Prefix.matches("Éclair", "écl"));
}

#[test]
fn test_unicode_fuzzy() {
    // Fuzzy matching with Unicode
    assert!(FilterMode::Fuzzy.matches("Éléphant", "éph"));
    assert!(FilterMode::Fuzzy.matches("Café au lait", "cal"));
}