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import os
from pathod.language import generators
import tutils
def test_randomgenerator():
g = generators.RandomGenerator("bytes", 100)
assert repr(g)
assert len(g[:10]) == 10
assert len(g[1:10]) == 9
assert len(g[:1000]) == 100
assert len(g[1000:1001]) == 0
assert g[0]
def test_filegenerator():
with tutils.tmpdir() as t:
path = os.path.join(t, "foo")
f = open(path, "wb")
f.write("x" * 10000)
f.close()
g = generators.FileGenerator(path)
assert len(g) == 10000
assert g[0] == "x"
assert g[-1] == "x"
assert g[0:5] == "xxxxx"
assert repr(g)
# remove all references to FileGenerator instance to close the file
# handle.
del g
def test_transform_generator():
def trans(offset, data):
return "a" * len(data)
g = "one"
t = generators.TransformGenerator(g, trans)
assert len(t) == len(g)
assert t[0] == "a"
assert t[:] == "a" * len(g)
assert repr(t)
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