simplify encoding test macro (#4385)

helix-view/src/document.rs

@@ -1354,8 +1354,10 @@ mod test {
         );
     }
 
-    macro_rules! test_decode {
-        ($label:expr, $label_override:expr) => {
+    macro_rules! decode {
+        ($name:ident, $label:expr, $label_override:expr) => {
+            #[test]
+            fn $name() {
                 let encoding = encoding::Encoding::for_label($label_override.as_bytes()).unwrap();
                 let base_path = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("tests/encoding");
                 let path = base_path.join(format!("{}_in.txt", $label));
@@ -1370,11 +1372,17 @@ mod test {
                     .to_string();
                 let expectation = std::fs::read_to_string(ref_path).unwrap();
                 assert_eq!(text[..], expectation[..]);
+            }  
+        };
+        ($name:ident, $label:expr) => {
+            decode!($name, $label, $label);
         };
     }
 
-    macro_rules! test_encode {
-        ($label:expr, $label_override:expr) => {
+    macro_rules! encode {
+        ($name:ident, $label:expr, $label_override:expr) => {
+            #[test]
+            fn $name() {
                 let encoding = encoding::Encoding::for_label($label_override.as_bytes()).unwrap();
                 let base_path = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("tests/encoding");
                 let path = base_path.join(format!("{}_out.txt", $label));
@@ -1388,50 +1396,24 @@ mod test {
     
                 let expectation = std::fs::read(ref_path).unwrap();
                 assert_eq!(buf, expectation);
-        };
-    }
-
-    macro_rules! test_decode_fn {
-        ($name:ident, $label:expr, $label_override:expr) => {
-            #[test]
-            fn $name() {
-                test_decode!($label, $label_override);
             }
         };
         ($name:ident, $label:expr) => {
-            #[test]
-            fn $name() {
-                test_decode!($label, $label);
-            }
-        };
-    }
-
-    macro_rules! test_encode_fn {
-        ($name:ident, $label:expr, $label_override:expr) => {
-            #[test]
-            fn $name() {
-                test_encode!($label, $label_override);
-            }
-        };
-        ($name:ident, $label:expr) => {
-            #[test]
-            fn $name() {
-                test_encode!($label, $label);
-            }
+            encode!($name, $label, $label);
         };
     }
 
-    test_decode_fn!(test_big5_decode, "big5");
-    test_encode_fn!(test_big5_encode, "big5");
-    test_decode_fn!(test_euc_kr_decode, "euc_kr", "EUC-KR");
-    test_encode_fn!(test_euc_kr_encode, "euc_kr", "EUC-KR");
-    test_decode_fn!(test_gb18030_decode, "gb18030");
-    test_encode_fn!(test_gb18030_encode, "gb18030");
-    test_decode_fn!(test_iso_2022_jp_decode, "iso_2022_jp", "ISO-2022-JP");
-    test_encode_fn!(test_iso_2022_jp_encode, "iso_2022_jp", "ISO-2022-JP");
-    test_decode_fn!(test_jis0208_decode, "jis0208", "EUC-JP");
-    test_encode_fn!(test_jis0208_encode, "jis0208", "EUC-JP");
-    test_decode_fn!(test_jis0212_decode, "jis0212", "EUC-JP");
-    test_decode_fn!(test_shift_jis_decode, "shift_jis");
-    test_encode_fn!(test_shift_jis_encode, "shift_jis");
+    decode!(big5_decode, "big5");
+    encode!(big5_encode, "big5");
+    decode!(euc_kr_decode, "euc_kr", "EUC-KR");
+    encode!(euc_kr_encode, "euc_kr", "EUC-KR");
+    decode!(gb18030_decode, "gb18030");
+    encode!(gb18030_encode, "gb18030");
+    decode!(iso_2022_jp_decode, "iso_2022_jp", "ISO-2022-JP");
+    encode!(iso_2022_jp_encode, "iso_2022_jp", "ISO-2022-JP");
+    decode!(jis0208_decode, "jis0208", "EUC-JP");
+    encode!(jis0208_encode, "jis0208", "EUC-JP");
+    decode!(jis0212_decode, "jis0212", "EUC-JP");
+    decode!(shift_jis_decode, "shift_jis");
+    encode!(shift_jis_encode, "shift_jis");
 }