fix test failures

- unicode tests live in coretest crate
- libcollections str tests need UnicodeChar trait.
- libregex perlw tests were checking a char in the Alphabetic category,
  \x2161. Confirmed perl 5.18 considers this a \w character. Changed to
  \x2961, which is not \w as the test expects.

2 files changed, 4 insertions, 2 deletions

diff --git a/src/libcollections/str.rs b/src/libcollections/str.rs
index cedb3383190..fc99c967e9f 100644
--- a/src/libcollections/str.rs
+++ b/src/libcollections/str.rs
@@ -972,6 +972,8 @@ mod tests {
     use string::String;
     use vec::Vec;
 
+    use unicode::UnicodeChar;
+
     #[test]
     fn test_eq_slice() {
         assert!((eq_slice("foobar".slice(0, 3), "foo")));
diff --git a/src/libregex/test/tests.rs b/src/libregex/test/tests.rs
index 35cb7c3c5b0..251ab10ad34 100644
--- a/src/libregex/test/tests.rs
+++ b/src/libregex/test/tests.rs
@@ -195,8 +195,8 @@ mat!(uni_case_lower, r"\p{Ll}+", "ΛΘΓΔα", Some((8, 10)))
 
 // Test the Unicode friendliness of Perl character classes.
 mat!(uni_perl_w, r"\w+", "dδd", Some((0, 4)))
-mat!(uni_perl_w_not, r"\w+", "Ⅱ", None)
-mat!(uni_perl_w_neg, r"\W+", "Ⅱ", Some((0, 3)))
+mat!(uni_perl_w_not, r"\w+", "⥡", None)
+mat!(uni_perl_w_neg, r"\W+", "⥡", Some((0, 3)))
 mat!(uni_perl_d, r"\d+", "1२३9", Some((0, 8)))
 mat!(uni_perl_d_not, r"\d+", "Ⅱ", None)
 mat!(uni_perl_d_neg, r"\D+", "Ⅱ", Some((0, 3)))