1 files changed, 182 insertions, 0 deletions
diff --git a/test/japanese-util.test.js b/test/japanese-util.test.js
index 22fad2f2..746c0e4d 100644
--- a/test/japanese-util.test.js
+++ b/test/japanese-util.test.js
@@ -863,3 +863,185 @@ describe('Japanese utility functions', () => {
         });
     });
 });
+
+describe('combining dakuten/handakuten normalization', () => {
+    const testCasesDakuten = [
+        ['か\u3099', 'が'],
+        ['き\u3099', 'ぎ'],
+        ['く\u3099', 'ぐ'],
+        ['け\u3099', 'げ'],
+        ['こ\u3099', 'ご'],
+        ['さ\u3099', 'ざ'],
+        ['し\u3099', 'じ'],
+        ['す\u3099', 'ず'],
+        ['せ\u3099', 'ぜ'],
+        ['そ\u3099', 'ぞ'],
+        ['た\u3099', 'だ'],
+        ['ち\u3099', 'ぢ'],
+        ['つ\u3099', 'づ'],
+        ['て\u3099', 'で'],
+        ['と\u3099', 'ど'],
+        ['は\u3099', 'ば'],
+        ['ひ\u3099', 'び'],
+        ['ふ\u3099', 'ぶ'],
+        ['へ\u3099', 'べ'],
+        ['ほ\u3099', 'ぼ'],
+        ['カ\u3099', 'ガ'],
+        ['キ\u3099', 'ギ'],
+        ['ク\u3099', 'グ'],
+        ['ケ\u3099', 'ゲ'],
+        ['コ\u3099', 'ゴ'],
+        ['サ\u3099', 'ザ'],
+        ['シ\u3099', 'ジ'],
+        ['ス\u3099', 'ズ'],
+        ['セ\u3099', 'ゼ'],
+        ['ソ\u3099', 'ゾ'],
+        ['タ\u3099', 'ダ'],
+        ['チ\u3099', 'ヂ'],
+        ['ツ\u3099', 'ヅ'],
+        ['テ\u3099', 'デ'],
+        ['ト\u3099', 'ド'],
+        ['ハ\u3099', 'バ'],
+        ['ヒ\u3099', 'ビ'],
+        ['フ\u3099', 'ブ'],
+        ['ヘ\u3099', 'ベ'],
+        ['ホ\u3099', 'ボ'],
+    ];
+
+    const testCasesHandakuten = [
+        ['は\u309A', 'ぱ'],
+        ['ひ\u309A', 'ぴ'],
+        ['ふ\u309A', 'ぷ'],
+        ['へ\u309A', 'ぺ'],
+        ['ほ\u309A', 'ぽ'],
+        ['ハ\u309A', 'パ'],
+        ['ヒ\u309A', 'ピ'],
+        ['フ\u309A', 'プ'],
+        ['ヘ\u309A', 'ペ'],
+        ['ホ\u309A', 'ポ'],
+    ];
+
+    const testCasesIgnored = [
+        ['な\u3099', 'な\u3099'],
+        ['な\u309A', 'な\u309A'],
+        ['に\u3099', 'に\u3099'],
+        ['に\u309A', 'に\u309A'],
+        ['ぬ\u3099', 'ぬ\u3099'],
+        ['ぬ\u309A', 'ぬ\u309A'],
+        ['ね\u3099', 'ね\u3099'],
+        ['ね\u309A', 'ね\u309A'],
+        ['の\u3099', 'の\u3099'],
+        ['の\u309A', 'の\u309A'],
+        ['ま\u3099', 'ま\u3099'],
+        ['ま\u309A', 'ま\u309A'],
+        ['み\u3099', 'み\u3099'],
+        ['み\u309A', 'み\u309A'],
+        ['む\u3099', 'む\u3099'],
+        ['む\u309A', 'む\u309A'],
+        ['め\u3099', 'め\u3099'],
+        ['め\u309A', 'め\u309A'],
+        ['も\u3099', 'も\u3099'],
+        ['も\u309A', 'も\u309A'],
+        ['ゃ\u3099', 'ゃ\u3099'],
+        ['ゃ\u309A', 'ゃ\u309A'],
+        ['や\u3099', 'や\u3099'],
+        ['や\u309A', 'や\u309A'],
+        ['ゅ\u3099', 'ゅ\u3099'],
+        ['ゅ\u309A', 'ゅ\u309A'],
+        ['ゆ\u3099', 'ゆ\u3099'],
+        ['ゆ\u309A', 'ゆ\u309A'],
+        ['ょ\u3099', 'ょ\u3099'],
+        ['ょ\u309A', 'ょ\u309A'],
+        ['よ\u3099', 'よ\u3099'],
+        ['よ\u309A', 'よ\u309A'],
+        ['ら\u3099', 'ら\u3099'],
+        ['ら\u309A', 'ら\u309A'],
+        ['り\u3099', 'り\u3099'],
+        ['り\u309A', 'り\u309A'],
+        ['る\u3099', 'る\u3099'],
+        ['る\u309A', 'る\u309A'],
+        ['れ\u3099', 'れ\u3099'],
+        ['れ\u309A', 'れ\u309A'],
+        ['ろ\u3099', 'ろ\u3099'],
+        ['ろ\u309A', 'ろ\u309A'],
+        ['ゎ\u3099', 'ゎ\u3099'],
+        ['ゎ\u309A', 'ゎ\u309A'],
+        ['わ\u3099', 'わ\u3099'],
+        ['わ\u309A', 'わ\u309A'],
+        ['ゐ\u3099', 'ゐ\u3099'],
+        ['ゐ\u309A', 'ゐ\u309A'],
+        ['ゑ\u3099', 'ゑ\u3099'],
+        ['ゑ\u309A', 'ゑ\u309A'],
+        ['を\u3099', 'を\u3099'],
+        ['を\u309A', 'を\u309A'],
+        ['ん\u3099', 'ん\u3099'],
+        ['ん\u309A', 'ん\u309A'],
+        ['ナ\u3099', 'ナ\u3099'],
+        ['ナ\u309A', 'ナ\u309A'],
+        ['ニ\u3099', 'ニ\u3099'],
+        ['ニ\u309A', 'ニ\u309A'],
+        ['ヌ\u3099', 'ヌ\u3099'],
+        ['ヌ\u309A', 'ヌ\u309A'],
+        ['ネ\u3099', 'ネ\u3099'],
+        ['ネ\u309A', 'ネ\u309A'],
+        ['ノ\u3099', 'ノ\u3099'],
+        ['ノ\u309A', 'ノ\u309A'],
+        ['マ\u3099', 'マ\u3099'],
+        ['マ\u309A', 'マ\u309A'],
+        ['ミ\u3099', 'ミ\u3099'],
+        ['ミ\u309A', 'ミ\u309A'],
+        ['ム\u3099', 'ム\u3099'],
+        ['ム\u309A', 'ム\u309A'],
+        ['メ\u3099', 'メ\u3099'],
+        ['メ\u309A', 'メ\u309A'],
+        ['モ\u3099', 'モ\u3099'],
+        ['モ\u309A', 'モ\u309A'],
+        ['ャ\u3099', 'ャ\u3099'],
+        ['ャ\u309A', 'ャ\u309A'],
+        ['ヤ\u3099', 'ヤ\u3099'],
+        ['ヤ\u309A', 'ヤ\u309A'],
+        ['ュ\u3099', 'ュ\u3099'],
+        ['ュ\u309A', 'ュ\u309A'],
+        ['ユ\u3099', 'ユ\u3099'],
+        ['ユ\u309A', 'ユ\u309A'],
+        ['ョ\u3099', 'ョ\u3099'],
+        ['ョ\u309A', 'ョ\u309A'],
+        ['ヨ\u3099', 'ヨ\u3099'],
+        ['ヨ\u309A', 'ヨ\u309A'],
+        ['ラ\u3099', 'ラ\u3099'],
+        ['ラ\u309A', 'ラ\u309A'],
+        ['リ\u3099', 'リ\u3099'],
+        ['リ\u309A', 'リ\u309A'],
+        ['ル\u3099', 'ル\u3099'],
+        ['ル\u309A', 'ル\u309A'],
+        ['レ\u3099', 'レ\u3099'],
+        ['レ\u309A', 'レ\u309A'],
+        ['ロ\u3099', 'ロ\u3099'],
+        ['ロ\u309A', 'ロ\u309A'],
+        ['ヮ\u3099', 'ヮ\u3099'],
+        ['ヮ\u309A', 'ヮ\u309A'],
+        ['ワ\u3099', 'ワ\u3099'],
+        ['ワ\u309A', 'ワ\u309A'],
+        ['ヰ\u3099', 'ヰ\u3099'],
+        ['ヰ\u309A', 'ヰ\u309A'],
+        ['ヱ\u3099', 'ヱ\u3099'],
+        ['ヱ\u309A', 'ヱ\u309A'],
+        ['ヲ\u3099', 'ヲ\u3099'],
+        ['ヲ\u309A', 'ヲ\u309A'],
+        ['ン\u3099', 'ン\u3099'],
+        ['ン\u309A', 'ン\u309A'],
+    ];
+
+    const textCasesMisc = [
+        ['', ''],
+        ['\u3099ハ', '\u3099ハ'],
+        ['\u309Aハ', '\u309Aハ'],
+        ['さくらし\u3099また\u3099いこん', 'さくらじまだいこん'],
+        ['いっほ\u309Aん', 'いっぽん'],
+    ];
+
+    const testCases = [...testCasesDakuten, ...testCasesHandakuten, ...testCasesIgnored, ...textCasesMisc];
+    test.each(testCases)('%s normalizes to %s', (input, expected) => {
+        expect(jp.normalizeCombiningCharacters(input)).toStrictEqual(expected);
+    });
+});