def test_parsing_format_0_file_results_in_header_and_track_chunk(self):
with open(FORMAT_0_EXAMPLE, "rb") as f:
chunks = parse_chunks(f)
self.assertEqual(len(chunks), 2)
self.assertEqual(chunks[0]["type"], HEADER)
self.assertEqual(chunks[1]["type"], TRACK)
def test_parsing_format_1_file_parses_header_correctly(self):
with open(FORMAT_1_EXAMPLE, "rb") as f:
chunks = parse_chunks(f)
header = chunks[0]
self.assertEqual(header["type"], HEADER)
self.assertEqual(header["format"], 1)
self.assertEqual(header["track_count"], 4)
division = header["division"]
self.assertEqual(division["format"], "time units per quarter note")
self.assertEqual(division["time_units"], 96)
def main(file):
log.debug("opening file '{}'...".format(file))
with open(file, "rb") as f:
chunks = parse_chunks(f)
# basic track printing routine
print("\n")
for chunk in chunks:
if not chunk:
print("Missing/Unparseable chunk. Skipping...\n")
continue
type_ = chunk["type"]
print("{} chunk".format(type_))
if type_ == "header":
for k, v in chunk.items():
if k != "type":
print(k, v)
else:
for evt in chunk["events"]:
print("Delta: {}".format(evt[0]))
for k, v in evt[1].items():
print(k, v)
print("")
print("")
def test_parsing_format_1_file_parses_tempo_track_correctly(self):
with open(FORMAT_1_EXAMPLE, "rb") as f:
chunks = parse_chunks(f)
tempo_track = chunks[1]
self.assertEqual(tempo_track["type"], TRACK)
self.assertEqual(len(tempo_track["events"]), 3)
# only testing overall sequence of events, rather than every event field
events = tempo_track["events"]
self.assertEqual(events[0][0], 0)
self.assertEqual(events[0][1]["type"], META)
self.assertEqual(events[0][1]["sub_type"], "Time Signature")
self.assertEqual(events[1][0], 0)
self.assertEqual(events[1][1]["type"], META)
self.assertEqual(events[1][1]["sub_type"], "Set Tempo")
self.assertEqual(events[2][0], 384)
self.assertEqual(events[2][1]["type"], META)
self.assertEqual(events[2][1]["sub_type"], "End of Track")