def test_round_trip(skm):
s, k, m = skm
values = np.arange(256)
decompressed = decompress(values, s=s, k=k, m=m)
output = compress(decompressed, s=s, k=k, m=m)
# account for two values of 0 which are possible but as input to decompress is a int only get
# one
if s == 1:
values[values == 128] = 0
assert np.array_equiv(values, output)
def test_compress_053(values):
compressed, start, end = values
res = compress(np.linspace(start, end, 10, dtype=np.uint64), s=0, k=5, m=3)
assert np.all(compressed == res)
def test_compression_maxvalue_error():
with pytest.raises(CompressionRangeError) as e:
_ = compress(256, s=0, k=1, m=7)
assert str(e.value).startswith('Valid input range exceeded')
def test_compression_skm_error():
with pytest.raises(CompressionSchemeParameterError):
_ = compress(1, s=1, k=5, m=4)
def test_compression_nonint_error():
with pytest.raises(NonIntegerCompressionError):
_ = compress(np.float64(10.0), s=0, k=5, m=3)
def test_compression():
comp1 = compress(1, s=0, k=5, m=3)
comp2 = compress(16106127360, s=0, k=5, m=3)
assert comp1 == 1
assert comp2 == 255