diff --git a/test/tts_pipeline/__snapshots__/test_tts_engine/test_mocked_create_sing_volume_from_phoneme_and_f0_output.json b/test/tts_pipeline/__snapshots__/test_tts_engine/test_mocked_create_sing_volume_from_phoneme_and_f0_output.json
new file mode 100644
index 000000000..cc38d7b9c
--- /dev/null
+++ b/test/tts_pipeline/__snapshots__/test_tts_engine/test_mocked_create_sing_volume_from_phoneme_and_f0_output.json
@@ -0,0 +1,106 @@
+[
+  0.0,
+  0.0,
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+  0.61,
+  0.61,
+  0.61,
+  0.61,
+  0.61,
+  1.53,
+  1.53,
+  1.53,
+  1.53,
+  1.96,
+  1.96,
+  1.96,
+  1.96,
+  1.96,
+  1.96,
+  1.96,
+  1.96,
+  0.83,
+  0.83,
+  0.83,
+  0.83,
+  0.83,
+  0.83,
+  0.83,
+  0.83,
+  0.83,
+  0.83,
+  0.83,
+  0.83,
+  0.83,
+  1.79,
+  1.79,
+  1.79,
+  1.79,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  1.44,
+  0.0,
+  0.0,
+  0.0,
+  1.11,
+  1.11,
+  0.51,
+  0.51,
+  0.51,
+  0.51,
+  0.51,
+  0.51,
+  3.0,
+  3.0,
+  3.0,
+  3.0,
+  3.0,
+  3.0,
+  2.57,
+  2.57,
+  2.57,
+  2.57,
+  2.57,
+  2.57,
+  2.57,
+  2.57,
+  2.57,
+  2.57,
+  2.57,
+  2.57,
+  2.57,
+  2.57,
+  2.57,
+  2.57,
+  2.57,
+  0.0,
+  0.0,
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+  0.0,
+  0.0
+]
diff --git a/test/tts_pipeline/test_tts_engine.py b/test/tts_pipeline/test_tts_engine.py
index 57598155b..6c5ae49e7 100644
--- a/test/tts_pipeline/test_tts_engine.py
+++ b/test/tts_pipeline/test_tts_engine.py
@@ -381,6 +381,27 @@ def test_mocked_synthesize_wave_output(snapshot_json: SnapshotAssertion) -> None
     assert snapshot_json == round_floats(result.tolist(), round_value=2)
 
 
+def test_mocked_create_sing_volume_from_phoneme_and_f0_output(
+    snapshot_json: SnapshotAssertion,
+) -> None:
+    """
+    モックされた `TTSEngine.create_sing_phoneme_and_f0_and_volume()` の出力スナップショットが一定である
+    NOTE: 入力生成の簡略化に別関数を呼び出すため、別関数が正しく動作しない場合テストが落ちる
+    """
+    # Inputs
+    tts_engine = TTSEngine(MockCoreWrapper())
+    doremi_srore = _gen_doremi_score()
+    phonemes, f0s, _ = tts_engine.create_sing_phoneme_and_f0_and_volume(
+        doremi_srore, StyleId(1)
+    )
+    # Outputs
+    result = tts_engine.create_sing_volume_from_phoneme_and_f0(
+        doremi_srore, phonemes, f0s, StyleId(1)
+    )
+    # Tests
+    assert snapshot_json == round_floats(result, round_value=2)
+
+
 def test_mocked_synthesize_wave_from_score_output(
     snapshot_json: SnapshotAssertion,
 ) -> None: