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test_reader.py
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#!/usr/bin/env python3
from unittest import TestCase
from unittest.mock import patch
from lxml import etree
from reader import *
class TestMeasure(TestCase):
def setUp(self):
measures = []
prev_measure = None
for measure_str in FAKE_MEASURES:
measure = Measure(etree.fromstring(measure_str), prev_measure)
measures.append(measure)
prev_measure = measure
self.measures = measures
def test_firstMeasureNoAttribute(self):
with self.assertRaises(MusicXMLParseError):
# measure 2 has no attributes
Measure(etree.fromstring(FAKE_MEASURES[1]), None)
def test_measureNumber(self):
self.assertEqual(self.measures[0].getMeasureNumber(), 1)
self.assertEqual(self.measures[1].getMeasureNumber(), 2)
self.assertEqual(self.measures[2].getMeasureNumber(), 3)
self.assertEqual(self.measures[3].getMeasureNumber(), 4)
def test_attributes(self):
attributes = [m.getAttributes() for m in self.measures]
# measure 1
a1 = attributes[0]
self.assertEqual(a1.getDivisions(), 2)
self.assertEqual(a1.getKeySignature(), 'C')
self.assertEqual(a1.getTime(), (4, 4))
# measure 2 should inherit attributes from measure 1
a2 = attributes[1]
self.assertEqual(a2.getDivisions(), 2)
self.assertEqual(a2.getKeySignature(), 'C')
self.assertEqual(a2.getTime(), (4, 4))
# measure 3: attribute update
a3 = attributes[2]
self.assertEqual(a3.getDivisions(), 4)
self.assertEqual(a3.getKeySignature(), 'D')
self.assertEqual(a3.getTime(), (6, 8))
# measure 4: partial attribute update (only key signature changes)
a4 = attributes[3]
self.assertEqual(a4.getDivisions(), 4)
self.assertEqual(a4.getKeySignature(), 'A')
self.assertEqual(a4.getTime(), (6, 8))
def test_iterNotes(self):
measure1_notes = [note for note in self.measures[0]]
self.assertEqual(len(measure1_notes), 5)
measure2_notes = [note for note in self.measures[1]]
self.assertEqual(len(measure2_notes), 6)
measure3_notes = [note for note in self.measures[2]]
self.assertEqual(len(measure3_notes), 4)
measure4_notes = [note for note in self.measures[3]]
self.assertEqual(len(measure4_notes), 5)
def test_barlines(self):
measure = Measure(etree.fromstring("""
<measure number="1">
<barline location="right">
<bar-style>light-heavy</bar-style>
</barline>
</measure>
"""), prev_measure=self.measures[0])
self.assertEqual(measure.getLeftBarlineType(), Measure.BARLINE_NORMAL)
self.assertEqual(measure.getRightBarlineType(), Measure.BARLINE_FINAL)
measure = Measure(etree.fromstring("""
<measure number="1">
<barline location="left">
<bar-style>heavy-light</bar-style>
<repeat direction="forward"/>
</barline>
</measure>
"""), prev_measure=self.measures[0])
self.assertEqual(measure.getLeftBarlineType(), Measure.BARLINE_REPEAT)
self.assertEqual(measure.getRightBarlineType(), Measure.BARLINE_NORMAL)
measure = Measure(etree.fromstring("""
<measure number="1">
<barline location="right">
<bar-style>light-heavy</bar-style>
<repeat direction="backward"/>
</barline>
</measure>
"""), prev_measure=self.measures[0])
self.assertEqual(measure.getLeftBarlineType(), Measure.BARLINE_NORMAL)
self.assertEqual(measure.getRightBarlineType(), Measure.BARLINE_REPEAT)
measure = Measure(etree.fromstring("""
<measure number="1">
<barline location="left">
<bar-style>heavy-light</bar-style>
<repeat direction="forward"/>
</barline>
<barline location="right">
<bar-style>light-light</bar-style>
</barline>
</measure>
"""), prev_measure=self.measures[0])
self.assertEqual(measure.getLeftBarlineType(), Measure.BARLINE_REPEAT)
self.assertEqual(measure.getRightBarlineType(), Measure.BARLINE_DOUBLE)
class TestNote(TestCase):
@patch('reader.Attributes')
def setUp(self, MockAttributes):
attributes = MockAttributes()
attributes.getDivisions.return_value = 2
attributes.getKeySignature.return_value = 'C'
attributes.getTime.return_value = (4, 4)
self.attributes = attributes
def test_simpleNote(self):
note = Note(etree.fromstring(
"""
<note>
<pitch>
<step>E</step>
<octave>4</octave>
</pitch>
<duration>2</duration>
</note>
"""), self.attributes)
self.assertFalse(note.isRest())
self.assertEqual(note.getPitch(), ('E', 4))
self.assertEqual(note.getDuration(), (2, 2))
self.assertFalse(note.isTieStart())
self.assertFalse(note.isTieStop())
self.assertFalse(note.isTupletStart())
self.assertFalse(note.isTupletStop())
self.assertFalse(note.isTuplet())
self.assertEqual(note.getAttributes(), self.attributes)
def test_pitch(self):
note = Note(etree.fromstring(
"""
<note>
<pitch>
<step>C</step>
<octave>5</octave>
</pitch>
<duration>2</duration>
</note>
"""), self.attributes)
self.assertEqual(note.getPitch(), ('C', 5))
# sharp
note = Note(etree.fromstring(
"""
<note>
<pitch>
<step>D</step>
<octave>4</octave>
</pitch>
<accidental>sharp</accidental>
<duration>2</duration>
</note>
"""), self.attributes)
self.assertEqual(note.getPitch(), ('D#', 4))
# flat
note = Note(etree.fromstring(
"""
<note>
<pitch>
<step>D</step>
<octave>4</octave>
</pitch>
<accidental>flat</accidental>
<duration>2</duration>
</note>
"""), self.attributes)
self.assertEqual(note.getPitch(), ('Db', 4))
# Notated C should be C# in the key of A
self.attributes.getKeySignature.return_value = 'A'
note = Note(etree.fromstring(
"""
<note>
<pitch>
<step>C</step>
<octave>5</octave>
</pitch>
<duration>2</duration>
</note>
"""), self.attributes)
self.assertEqual(note.getPitch(), ('C#', 5))
# Natural C in the key of A
self.attributes.getKeySignature.return_value = 'A'
note = Note(etree.fromstring(
"""
<note>
<pitch>
<step>C</step>
<octave>5</octave>
</pitch>
<accidental>natural</accidental>
<duration>2</duration>
</note>
"""), self.attributes)
self.assertEqual(note.getPitch(), ('C', 5))
def test_rest(self):
note = Note(etree.fromstring(
"""
<note>
<rest/>
<duration>2</duration>
</note>
"""), self.attributes)
self.assertTrue(note.isRest())
with self.assertRaises(MusicXMLParseError):
note.getPitch()
self.assertEqual(note.getDuration(), (2, 2))
self.assertFalse(note.isTieStart())
self.assertFalse(note.isTieStop())
def test_tie(self):
note = Note(etree.fromstring(
"""
<note>
<pitch><step>E</step><octave>4</octave></pitch><duration>2</duration>
<tie type="start"/>
</note>
"""), self.attributes)
self.assertTrue(note.isTieStart())
self.assertFalse(note.isTieStop())
note = Note(etree.fromstring(
"""
<note>
<pitch><step>E</step><octave>4</octave></pitch><duration>2</duration>
<tie type="stop"/>
</note>
"""), self.attributes)
self.assertFalse(note.isTieStart())
self.assertTrue(note.isTieStop())
note = Note(etree.fromstring(
"""
<note>
<pitch><step>E</step><octave>4</octave></pitch><duration>2</duration>
<tie type="start"/>
<tie type="stop"/>
</note>
"""), self.attributes)
self.assertTrue(note.isTieStart())
self.assertTrue(note.isTieStop())
def test_tuplet(self):
self.attributes.getDivisions.return_value = 6
note1 = Note(etree.fromstring(
"""
<note>
<pitch><step>E</step><octave>4</octave></pitch><duration>2</duration>
<time-modification>
<actual-notes>3</actual-notes>
<normal-notes>2</normal-notes>
</time-modification>
<notations>
<tuplet type="start" bracket="yes"/>
</notations>
</note>
"""), self.attributes)
note2 = Note(etree.fromstring(
"""
<note>
<pitch><step>E</step><octave>4</octave></pitch><duration>2</duration>
<time-modification>
<actual-notes>3</actual-notes>
<normal-notes>2</normal-notes>
</time-modification>
</note>
"""), self.attributes)
note3 = Note(etree.fromstring(
"""
<note>
<pitch><step>E</step><octave>4</octave></pitch><duration>2</duration>
<time-modification>
<actual-notes>3</actual-notes>
<normal-notes>2</normal-notes>
</time-modification>
<notations>
<tuplet type="stop"/>
</notations>
</note>
"""), self.attributes)
self.assertTrue(note1.isTuplet())
self.assertTrue(note2.isTuplet())
self.assertTrue(note3.isTuplet())
self.assertTrue(note1.isTupletStart())
self.assertFalse(note1.isTupletStop())
self.assertFalse(note2.isTupletStart())
self.assertFalse(note2.isTupletStop())
self.assertFalse(note3.isTupletStart())
self.assertTrue(note3.isTupletStop())
self.assertEqual(note1.getDisplayedDuration(), (3, 6))
# ------------- TEST DATA -------------
FAKE_MEASURES = [
"""
<measure number="1" width="319.79">
<print>
<system-layout>
<system-margins>
<left-margin>0.00</left-margin>
<right-margin>0.00</right-margin>
</system-margins>
<top-system-distance>170.00</top-system-distance>
</system-layout>
</print>
<attributes>
<divisions>2</divisions>
<key>
<fifths>0</fifths>
</key>
<time>
<beats>4</beats>
<beat-type>4</beat-type>
</time>
<clef>
<sign>G</sign>
<line>2</line>
</clef>
</attributes>
<note default-x="75.17" default-y="-40.00">
<pitch>
<step>E</step>
<octave>4</octave>
</pitch>
<duration>2</duration>
<voice>1</voice>
<type>quarter</type>
<stem>up</stem>
</note>
<note default-x="132.35" default-y="-40.00">
<pitch>
<step>E</step>
<octave>4</octave>
</pitch>
<duration>1</duration>
<voice>1</voice>
<type>eighth</type>
<stem>up</stem>
<beam number="1">begin</beam>
<notations>
<slur type="start" number="1"/>
</notations>
</note>
<note default-x="168.09" default-y="-35.00">
<pitch>
<step>F</step>
<octave>4</octave>
</pitch>
<duration>1</duration>
<voice>1</voice>
<type>eighth</type>
<stem>up</stem>
<beam number="1">end</beam>
<notations>
<slur type="stop" number="1"/>
</notations>
</note>
<note default-x="203.83" default-y="-30.00">
<pitch>
<step>G</step>
<octave>4</octave>
</pitch>
<duration>2</duration>
<voice>1</voice>
<type>quarter</type>
<stem>up</stem>
</note>
<note default-x="261.01" default-y="-40.00">
<pitch>
<step>E</step>
<octave>4</octave>
</pitch>
<duration>2</duration>
<voice>1</voice>
<type>quarter</type>
<stem>up</stem>
</note>
</measure>
"""
,
"""
<measure number="2" width="278.96">
<note default-x="12.00" default-y="-45.00">
<pitch>
<step>D</step>
<octave>4</octave>
</pitch>
<duration>1</duration>
<voice>1</voice>
<type>eighth</type>
<stem>up</stem>
<beam number="1">begin</beam>
</note>
<note default-x="48.86" default-y="-40.00">
<pitch>
<step>E</step>
<octave>4</octave>
</pitch>
<duration>1</duration>
<voice>1</voice>
<type>eighth</type>
<stem>up</stem>
<beam number="1">continue</beam>
</note>
<note default-x="85.71" default-y="-35.00">
<pitch>
<step>F</step>
<octave>4</octave>
</pitch>
<duration>1</duration>
<voice>1</voice>
<type>eighth</type>
<stem>up</stem>
<beam number="1">continue</beam>
</note>
<note default-x="122.57" default-y="-45.00">
<pitch>
<step>D</step>
<octave>4</octave>
</pitch>
<duration>1</duration>
<tie type="start"/>
<voice>1</voice>
<type>eighth</type>
<stem>up</stem>
<beam number="1">end</beam>
<notations>
<tied type="start"/>
</notations>
</note>
<note default-x="159.42" default-y="-45.00">
<pitch>
<step>D</step>
<octave>4</octave>
</pitch>
<duration>2</duration>
<tie type="stop"/>
<voice>1</voice>
<type>quarter</type>
<stem>up</stem>
<notations>
<tied type="stop"/>
</notations>
</note>
<note>
<rest/>
<duration>2</duration>
<voice>1</voice>
<type>quarter</type>
</note>
</measure>
"""
,
"""
<measure number="3" width="249.35">
<attributes>
<divisions>4</divisions>
<key>
<fifths>2</fifths>
</key>
<time>
<beats>6</beats>
<beat-type>8</beat-type>
</time>
<clef>
<sign>G</sign>
<line>2</line>
</clef>
</attributes>
<note default-x="12.00" default-y="-35.00">
<pitch>
<step>F</step>
<octave>4</octave>
</pitch>
<duration>2</duration>
<voice>1</voice>
<type>quarter</type>
<stem>up</stem>
</note>
<note default-x="70.94" default-y="-45.00">
<pitch>
<step>D</step>
<octave>4</octave>
</pitch>
<duration>2</duration>
<voice>1</voice>
<type>quarter</type>
<stem>up</stem>
</note>
<note default-x="129.87" default-y="-30.00">
<pitch>
<step>G</step>
<octave>4</octave>
</pitch>
<duration>2</duration>
<voice>1</voice>
<type>quarter</type>
<stem>up</stem>
</note>
<note default-x="188.81" default-y="-35.00">
<pitch>
<step>F</step>
<octave>4</octave>
</pitch>
<duration>2</duration>
<voice>1</voice>
<type>quarter</type>
<stem>up</stem>
</note>
</measure>
"""
,
"""
<measure number="4" width="262.51">
<attributes>
<key>
<fifths>3</fifths>
</key>
</attributes>
<note default-x="12.00" default-y="-40.00">
<pitch>
<step>E</step>
<octave>4</octave>
</pitch>
<duration>2</duration>
<voice>1</voice>
<type>quarter</type>
<stem>up</stem>
</note>
<note default-x="70.57" default-y="-40.00">
<pitch>
<step>E</step>
<octave>4</octave>
</pitch>
<duration>1</duration>
<voice>1</voice>
<type>eighth</type>
<stem>up</stem>
<beam number="1">begin</beam>
</note>
<note default-x="107.17" default-y="-35.00">
<pitch>
<step>F</step>
<octave>4</octave>
</pitch>
<duration>1</duration>
<voice>1</voice>
<type>eighth</type>
<stem>up</stem>
<beam number="1">end</beam>
</note>
<note default-x="143.78" default-y="-30.00">
<pitch>
<step>G</step>
<octave>4</octave>
</pitch>
<duration>2</duration>
<voice>1</voice>
<type>quarter</type>
<stem>up</stem>
</note>
<note>
<rest/>
<duration>2</duration>
<voice>1</voice>
<type>quarter</type>
</note>
</measure>
"""
]