Added tests for scale

Added option to give intervals as scale name

tests/test_parser.py

@@ -43,4 +43,4 @@ def test_parsing_text(pattern: str):
     ],
 )
 def test_pcs(pattern: str, expected: list):
-    assert parse_expression(pattern).pcs == expected
+    assert parse_expression(pattern).pcs() == expected

tests/test_scale.py

@@ -0,0 +1,24 @@
+from ziffers import scale
+import pytest
+
+@pytest.mark.parametrize(
+    "name,expected",
+    [
+        ("C4", 60),
+        ("A1", 33),
+        ("Bb3", 58),
+        ("C#1", 25),
+        ("foo", 60),
+    ],
+)
+def test_notenames(name: str, expected: int):
+    assert scale.note_to_midi(name) == expected
+
+@pytest.mark.parametrize(
+    "pcs,expected",
+    [
+        (list(range(-9,10)), [45, 47, 48, 50, 52, 53, 55, 57, 59, 60, 62, 64, 65, 67, 69, 71, 72, 74, 76]),
+    ],
+)
+def test_note_to_midi(pcs: str, expected: int):
+    assert [scale.note_from_pc(root=60, pitch_class=val, intervals="Ionian") for val in pcs] == expected