Move collectionstest::char into coretest::char

Author: SimonSapin

src/libcollectionstest/char.rs

@@ -37,7 +37,6 @@ extern crate rustc_unicode;
 mod binary_heap;
 mod bit;
 mod btree;
-mod char;  // char isn't really a collection, but didn't find a better place for this.
 mod enum_set;
 mod fmt;
 mod linked_list;

src/libcollectionstest/lib.rs

@@ -75,6 +75,8 @@ fn test_to_lowercase() {
     assert_eq!(lower('Μ'), 'μ');
     assert_eq!(lower('Α'), 'α');
     assert_eq!(lower('Σ'), 'σ');
+    assert_eq!(lower('Dž'), 'dž');
+    assert_eq!(lower('fi'), 'fi');
 }
 
 #[test]
@@ -95,6 +97,32 @@ fn test_to_uppercase() {
     assert_eq!(upper('μ'), ['Μ']);
     assert_eq!(upper('α'), ['Α']);
     assert_eq!(upper('ς'), ['Σ']);
+    assert_eq!(upper('Dž'), ['DŽ']);
+    assert_eq!(upper('fi'), ['F', 'I']);
+    assert_eq!(upper('ᾀ'), ['Ἀ', 'Ι']);
+}
+
+#[test]
+fn test_to_titlecase() {
+    fn title(c: char) -> Vec<char> {
+        c.to_titlecase().collect()
+    }
+    assert_eq!(title('a'), ['A']);
+    assert_eq!(title('ö'), ['Ö']);
+    assert_eq!(title('ß'), ['S', 's']); // not ẞ: Latin capital letter sharp s
+    assert_eq!(title('ü'), ['Ü']);
+    assert_eq!(title('💩'), ['💩']);
+
+    assert_eq!(title('σ'), ['Σ']);
+    assert_eq!(title('τ'), ['Τ']);
+    assert_eq!(title('ι'), ['Ι']);
+    assert_eq!(title('γ'), ['Γ']);
+    assert_eq!(title('μ'), ['Μ']);
+    assert_eq!(title('α'), ['Α']);
+    assert_eq!(title('ς'), ['Σ']);
+    assert_eq!(title('DŽ'), ['Dž']);
+    assert_eq!(title('fi'), ['F', 'i']);
+    assert_eq!(title('ᾀ'), ['ᾈ']);
 }
 
 #[test]