libstd: Move std tests into libstd

src/libstd/unicode.rs

@@ -207,3 +207,30 @@ pure fn is_upper(c: char) -> bool {
     ret icu::libicu::u_isupper(c) == icu::TRUE;
 }
 
+#[cfg(test)]
+mod tests {
+
+    #[test]
+    fn test_is_digit() {
+        assert (unicode::icu::is_digit('0'));
+        assert (!unicode::icu::is_digit('m'));
+    }
+
+    #[test]
+    fn test_is_lower() {
+        assert (unicode::icu::is_lower('m'));
+        assert (!unicode::icu::is_lower('M'));
+    }
+
+    #[test]
+    fn test_is_space() {
+        assert (unicode::icu::is_space(' '));
+        assert (!unicode::icu::is_space('m'));
+    }
+
+    #[test]
+    fn test_is_upper() {
+        assert (unicode::icu::is_upper('M'));
+        assert (!unicode::icu::is_upper('m'));
+    }
+}