Add validate test

Author: yamachu

tests/VoicevoxCoreSharp.Core.Tests/UtilsTest.cs

@@ -37,5 +37,20 @@ public void CreateAudioQueryFromAccentPhrases()
             Assert.NotNull(outputAudioQueryJson);
             Assert.Equal($$"""{"accent_phrases":[{"moras":[{"text":"コ","consonant":"k","consonant_length":0.0,"vowel":"o","vowel_length":0.0,"pitch":0.0},{"text":"ン","consonant":null,"consonant_length":null,"vowel":"N","vowel_length":0.0,"pitch":0.0},{"text":"ニ","consonant":"n","consonant_length":0.0,"vowel":"i","vowel_length":0.0,"pitch":0.0},{"text":"チ","consonant":"ch","consonant_length":0.0,"vowel":"i","vowel_length":0.0,"pitch":0.0},{"text":"ワ","consonant":"w","consonant_length":0.0,"vowel":"a","vowel_length":0.0,"pitch":0.0}],"accent":5,"pause_mora":null,"is_interrogative":false}],"speedScale":1.0,"pitchScale":0.0,"intonationScale":1.0,"volumeScale":1.0,"prePhonemeLength":0.1,"postPhonemeLength":0.1,"outputSamplingRate":24000,"outputStereo":false,"kana":"コンニチワ'"}""", outputAudioQueryJson);
         }
+
+        [Theory]
+        [InlineData(
+            $$"""[{"moras":[{"text":"コ","consonant":"k","consonant_length":0.0,"vowel":"o","vowel_length":0.0,"pitch":0.0},{"text":"ン","consonant":null,"consonant_length":null,"vowel":"N","vowel_length":0.0,"pitch":0.0},{"text":"ニ","consonant":"n","consonant_length":0.0,"vowel":"i","vowel_length":0.0,"pitch":0.0},{"text":"チ","consonant":"ch","consonant_length":0.0,"vowel":"i","vowel_length":0.0,"pitch":0.0},{"text":"ワ","consonant":"w","consonant_length":0.0,"vowel":"a","vowel_length":0.0,"pitch":0.0}],"accent":5,"pause_mora":null,"is_interrogative":false}]""",
+            ResultCode.RESULT_OK
+        )]
+        [InlineData(
+            $$"""[{"mora":[{"text":"コ","consonant":"k","consonant_length":0.0,"vowel":"o","vowel_length":0.0,"pitch":0.0},{"text":"ン","consonant":null,"consonant_length":null,"vowel":"N","vowel_length":0.0,"pitch":0.0},{"text":"ニ","consonant":"n","consonant_length":0.0,"vowel":"i","vowel_length":0.0,"pitch":0.0},{"text":"チ","consonant":"ch","consonant_length":0.0,"vowel":"i","vowel_length":0.0,"pitch":0.0},{"text":"ワ","consonant":"w","consonant_length":0.0,"vowel":"a","vowel_length":0.0,"pitch":0.0}],"accent":5,"pause_mora":null,"is_interrogative":false}]""",
+            ResultCode.RESULT_INVALID_ACCENT_PHRASE_ERROR
+        )]
+        public void ValidateAccentPhrase(string accentPhraseJson, ResultCode expected)
+        {
+            var result = Utils.ValidateAccentPhrase(accentPhraseJson);
+            Assert.Equal(expected, result);
+        }
     }
 }