Add test verifying bounds for FM pitch bend

rhargreaves · Jun 30, 2024 · e1adc70 · e1adc70
1 parent 57b414e
commit e1adc70
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Showing 2 changed files with 19 additions and 0 deletions.
diff --git a/tests/unit/main.c b/tests/unit/main.c
@@ -100,6 +100,7 @@ int main(void)
         midi_test(test_midi_sets_synth_pitch_bend),
         midi_test(test_midi_pitch_bends_down_an_octave),
         midi_test(test_midi_pitch_bends_up_an_octave),
+        midi_test(test_midi_pitch_bends_up_an_octave_upper_freq_limit),
         midi_test(test_midi_persists_pitch_bend_between_notes),
         midi_test(test_midi_sets_psg_pitch_bend_down),
         midi_test(test_midi_sets_psg_pitch_bend_up),

diff --git a/tests/unit/test_midi_fm.c b/tests/unit/test_midi_fm.c
@@ -486,6 +486,24 @@ static void test_midi_pitch_bends_up_an_octave(UNUSED void** state)
     }
 }
 
+static void test_midi_pitch_bends_up_an_octave_upper_freq_limit(
+    UNUSED void** state)
+{
+    const u8 MIDI_PITCH_AS4 = 70;
+    const u16 SYNTH_FREQ_AS4 = 1146;
+    const u16 SYNTH_FREQ_C3 = 1286;
+
+    for (int chan = 0; chan <= MAX_FM_CHAN; chan++) {
+        expect_synth_pitch(chan, 4, SYNTH_FREQ_AS4);
+        expect_synth_volume_any();
+        expect_value(__wrap_synth_noteOn, channel, chan);
+        __real_midi_note_on(chan, MIDI_PITCH_AS4, MAX_MIDI_VOLUME);
+
+        expect_synth_pitch(chan, 4, SYNTH_FREQ_C3);
+        __real_midi_pitch_bend(chan, MIDI_PITCH_BEND_MAX); // up 2 st
+    }
+}
+
 static void test_midi_persists_pitch_bend_between_notes(UNUSED void** state)
 {
     for (int chan = 0; chan <= MAX_FM_CHAN; chan++) {