feat: initial commit

dotnet/MaigoLabs.NeedLe.Tests/Indexer/Japanese/JapaneseUtilsTests.cs

@@ -0,0 +1,69 @@
+using MaigoLabs.NeedLe.Indexer.Japanese;
+
+namespace MaigoLabs.NeedLe.Tests.Indexer.Japanese;
+
+#region ToRomajiStrictly
+
+public sealed class ToRomajiStrictly_ConvertsBasicKanaToRomajiTest : NeedleTestBase
+{
+    [Fact]
+    public void Execute()
+    {
+        Assert.Equal("a", JapaneseUtils.ToRomajiStrictly("あ"));
+        Assert.Equal("ka", JapaneseUtils.ToRomajiStrictly("か"));
+        Assert.Equal("sakura", JapaneseUtils.ToRomajiStrictly("さくら"));
+    }
+}
+
+public sealed class ToRomajiStrictly_ConvertsKatakanaToRomajiTest : NeedleTestBase
+{
+    [Fact]
+    public void Execute()
+    {
+        Assert.Equal("a", JapaneseUtils.ToRomajiStrictly("ア"));
+        Assert.Equal("ka", JapaneseUtils.ToRomajiStrictly("カ"));
+        Assert.Equal("sakura", JapaneseUtils.ToRomajiStrictly("サクラ"));
+    }
+}
+
+public sealed class ToRomajiStrictly_HandlesLongVowelsTest : NeedleTestBase
+{
+    [Fact]
+    public void Execute()
+    {
+        Assert.Equal("ou", JapaneseUtils.ToRomajiStrictly("おう"));
+        Assert.Equal("oo", JapaneseUtils.ToRomajiStrictly("おお"));
+    }
+}
+
+public sealed class ToRomajiStrictly_ReturnsEmptyForInvalidFirstCharacterTest : NeedleTestBase
+{
+    [Fact]
+    public void Execute()
+    {
+        Assert.Equal("", JapaneseUtils.ToRomajiStrictly("ー")); // prolonged sound mark cannot be first
+        Assert.Equal("", JapaneseUtils.ToRomajiStrictly("ゃ")); // small ya cannot be first
+    }
+}
+
+public sealed class ToRomajiStrictly_ReturnsEmptyForInvalidLastCharacterTest : NeedleTestBase
+{
+    [Fact]
+    public void Execute()
+    {
+        Assert.Equal("", JapaneseUtils.ToRomajiStrictly("っ")); // small tsu cannot be last
+    }
+}
+
+public sealed class ToRomajiStrictly_HandlesGeminationTest : NeedleTestBase
+{
+    [Fact]
+    public void Execute()
+    {
+        Assert.Equal("katta", JapaneseUtils.ToRomajiStrictly("かった"));
+    }
+}
+
+#endregion
+
+