extern crate difflib;
use difflib::sequencematcher::{SequenceMatcher, Match, Opcode};
use difflib::differ::Differ;
#[test]
fn test_longest_match()
{
let matcher = SequenceMatcher::new(" abcd", "abcd abcd");
let m = matcher.find_longest_match(0, 5, 0, 9);
assert_eq!(m.first_start, 0);
assert_eq!(m.second_start, 4);
assert_eq!(m.size, 5);
}
#[test]
fn test_all_matches()
{
let mut matcher = SequenceMatcher::new("abxcd", "abcd");
let result = matcher.get_matching_blocks();
let mut expected_result = Vec::new();
expected_result.push(Match{
first_start: 0,
second_start: 0,
size: 2
});
expected_result.push(Match{
first_start: 3,
second_start: 2,
size: 2
});
expected_result.push(Match{
first_start: 5,
second_start: 4,
size: 0
});
assert_eq!(result, expected_result);
}
#[test]
fn test_get_opcodes() {
let mut matcher = SequenceMatcher::new("qabxcd", "abycdf");
let result = matcher.get_opcodes();
let mut expected_result = Vec::new();
expected_result.push(Opcode{
tag: "delete".to_string(),
first_start: 0,
first_end: 1,
second_start: 0,
second_end: 0
});
expected_result.push(Opcode{
tag: "equal".to_string(),
first_start: 1,
first_end: 3,
second_start: 0,
second_end: 2
});
expected_result.push(Opcode{
tag: "replace".to_string(),
first_start: 3,
first_end: 4,
second_start: 2,
second_end: 3
});
expected_result.push(Opcode{
tag: "equal".to_string(),
first_start: 4,
first_end: 6,
second_start: 3,
second_end: 5
});
expected_result.push(Opcode{
tag: "insert".to_string(),
first_start: 6,
first_end: 6,
second_start: 5,
second_end: 6
});
assert_eq!(result, expected_result);
}
#[test]
fn test_ratio() {
let mut matcher = SequenceMatcher::new("abcd", "bcde");
assert_eq!(matcher.ratio(), 0.75);
}
#[test]
fn test_get_close_matches() {
let words = vec!["ape", "apple", "peach", "puppy"];
let result = difflib::get_close_matches("appel", words, 3, 0.6);
assert_eq!(result, vec!["apple", "ape"]);
}
#[test]
fn test_differ_compare() {
let first_text = vec!["one\n", "two\n", "three\n"];
let second_text = vec!["ore\n", "tree\n", "emu\n"];
let differ = Differ::new();
let result = differ.compare(&first_text, &second_text).join("");
assert_eq!(result, "- one\n? ^\n+ ore\n? ^\n- two\n- three\n? -\n+ tree\n+ emu\n");
}
fn is_junk_char(ch: &str) -> bool {
if ch == " " || ch == "\t" {
return true
}
false
}
#[test]
fn test_differ_compare_with_func() {
let first_text = vec!["one\n", "two\n", "three\n"];
let second_text = vec!["ore\n", "tree\n", "emu\n"];
let mut differ = Differ::new();
differ.char_junk = Some(is_junk_char);
let result = differ.compare(&first_text, &second_text).join("");
assert_eq!(result, "- one\n? ^\n+ ore\n? ^\n- two\n- three\n? -\n+ tree\n+ emu\n");
}
#[test]
fn test_differ_restore() {
let first_text = vec!["one\n", " two\n", "three\n"];
let second_text = vec!["ore\n", "tree\n", "emu\n"];
let differ = Differ::new();
let diff = differ.compare(&first_text, &second_text);
assert_eq!(first_text, Differ::restore(&diff, 1));
assert_eq!(second_text, Differ::restore(&diff, 2));
}
#[test]
fn test_unified_diff() {
let first_text = "one two three four".split(" ").collect::<Vec<&str>>();
let second_text = "zero one tree four".split(" ").collect::<Vec<&str>>();
let result = difflib::unified_diff(&first_text, &second_text, "Original", "Current",
"2005-01-26 23:30:50", "2010-04-02 10:20:52", 3).join("");
assert_eq!(result, "--- Original\t2005-01-26 23:30:50\n+++ Current\t2010-04-02 10:20:52\n@@ -1,4 +1,4 @@\n+zero one-two-three+tree four");
}
#[test]
fn test_context_diff() {
let first_text = "one two three four".split(" ").collect::<Vec<&str>>();
let second_text = "zero one tree four".split(" ").collect::<Vec<&str>>();
let result = difflib::context_diff(&first_text, &second_text, "Original", "Current",
"2005-01-26 23:30:50", "2010-04-02 10:20:52", 3).join("");
assert_eq!(result, "*** Original\t2005-01-26 23:30:50\n--- Current\t2010-04-02 10:20:52\n***************\n*** 1,4 ****\n one! two! three four--- 1,4 ----\n+ zero one! tree four");
}