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# -*- coding: utf-8 -*-
"""
test_simple_decompression
~~~~~~~~~~~~~~~~~~~~~~~~~
Tests for decompression of single chunks.
"""
import brotlicffi
import pytest
def test_decompression(simple_compressed_file):
"""
Decompressing files returns their original form using decompress.
"""
with open(simple_compressed_file[0], 'rb') as f:
uncompressed_data = f.read()
with open(simple_compressed_file[1], 'rb') as f:
compressed_data = f.read()
assert brotlicffi.decompress(compressed_data) == uncompressed_data
def test_decompressobj(simple_compressed_file):
with open(simple_compressed_file[0], 'rb') as f:
uncompressed_data = f.read()
with open(simple_compressed_file[1], 'rb') as f:
compressed_data = f.read()
o = brotlicffi.Decompressor()
data = o.decompress(compressed_data)
data += o.flush()
data += o.finish()
assert data == uncompressed_data
def test_drip_feed(simple_compressed_file):
"""
Sending in the data one byte at a time still works.
"""
with open(simple_compressed_file[0], 'rb') as f:
uncompressed_data = f.read()
with open(simple_compressed_file[1], 'rb') as f:
compressed_data = f.read()
outdata = []
o = brotlicffi.Decompressor()
for i in range(0, len(compressed_data)):
assert not o.is_finished()
outdata.append(o.decompress(compressed_data[i:i+1]))
assert o.is_finished()
outdata.append(o.flush())
assert o.is_finished()
outdata.append(o.finish())
assert o.is_finished()
assert b''.join(outdata) == uncompressed_data
@pytest.mark.parametrize('exception_cls', [brotlicffi.Error, brotlicffi.error])
def test_streaming_decompression_fails_properly_on_garbage(exception_cls):
"""
Garbage data properly fails decompression.
"""
o = brotlicffi.Decompressor()
with pytest.raises(exception_cls):
o.decompress(b'some random garbage')
assert not o.is_finished()
@pytest.mark.parametrize('exception_cls', [brotlicffi.Error, brotlicffi.error])
@pytest.mark.parametrize('bogus', (b'some random garbage', b'bogus'))
def test_decompression_fails_properly_on_garbage(bogus, exception_cls):
"""
Garbage data properly fails decompression.
"""
with pytest.raises(exception_cls):
brotlicffi.decompress(bogus)
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