Use method syntax in tests.

README.md

@@ -14,7 +14,7 @@ fn main() {
     assert_eq!(compose('A','\u{30a}'), Some('Å'));
     
     let s = "ÅΩ";
-    let c = UnicodeNormalization::nfc(s).collect::<String>();
+    let c = s.nfc().collect::<String>();
     assert_eq!(c, "ÅΩ");
 }
 ```

src/lib.rs

@@ -22,7 +22,7 @@
 //!     assert_eq!(compose('A','\u{30a}'), Some('Å'));
 //!
 //!     let s = "ÅΩ";
-//!     let c = UnicodeNormalization::nfc(s).collect::<String>();
+//!     let c = s.nfc().collect::<String>();
 //!     assert_eq!(c, "ÅΩ");
 //! }
 //! ```

src/test.rs

@@ -14,7 +14,7 @@ use super::str::UnicodeNormalization;
 fn test_nfd() {
     macro_rules! t {
         ($input: expr, $expected: expr) => {
-            assert_eq!(UnicodeNormalization::nfd($input).collect::<String>(), $expected);
+            assert_eq!($input.nfd().collect::<String>(), $expected);
         }
     }
     t!("abc", "abc");
@@ -33,7 +33,7 @@ fn test_nfd() {
 fn test_nfkd() {
     macro_rules! t {
         ($input: expr, $expected: expr) => {
-            assert_eq!(UnicodeNormalization::nfkd($input).collect::<String>(), $expected);
+            assert_eq!($input.nfkd().collect::<String>(), $expected);
         }
     }
     t!("abc", "abc");
@@ -52,7 +52,7 @@ fn test_nfkd() {
 fn test_nfc() {
     macro_rules! t {
         ($input: expr, $expected: expr) => {
-            assert_eq!(UnicodeNormalization::nfc($input).collect::<String>(), $expected);
+            assert_eq!($input.nfc().collect::<String>(), $expected);
         }
     }
     t!("abc", "abc");
@@ -72,7 +72,7 @@ fn test_nfc() {
 fn test_nfkc() {
     macro_rules! t {
         ($input: expr, $expected: expr) => {
-            assert_eq!(UnicodeNormalization::nfkc($input).collect::<String>(), $expected);
+            assert_eq!($input.nfkc().collect::<String>(), $expected);
         }
     }
     t!("abc", "abc");
@@ -92,7 +92,7 @@ fn test_nfkc() {
 fn test_official() {
     use testdata::TEST_NORM;
     macro_rules! normString {
-        ($fun: ident, $input: expr) => { UnicodeNormalization::$fun($input).collect::<String>() }
+        ($method: ident, $input: expr) => { $input.$method().collect::<String>() }
     }
 
     for &(s1, s2, s3, s4, s5) in TEST_NORM {