def test_cat_dev_urandom(self, cat_env_fixture):
"""
test of cat (pseudo) device.
"""
stdin = io.StringIO()
stdout_buf = CatLimitedBuffer(limit=500)
stderr_buf = io.BytesIO()
stdout = io.TextIOWrapper(stdout_buf)
stderr = io.TextIOWrapper(stderr_buf)
opts = cat._cat_parse_args([])
cat._cat_single_file(opts, "/dev/urandom", stdin, stdout, stderr)
stdout.flush()
stderr.flush()
assert len(stdout_buf.getvalue()) >= 500
def test_cat_empty_file(self, cat_env_fixture):
with open(self.tempfile, "w") as f:
f.write("")
stdin = io.StringIO()
stdout_buf = io.BytesIO()
stderr_buf = io.BytesIO()
stdout = io.TextIOWrapper(stdout_buf)
stderr = io.TextIOWrapper(stderr_buf)
opts = cat._cat_parse_args([])
cat._cat_single_file(opts, self.tempfile, stdin, stdout, stderr)
stdout.flush()
stderr.flush()
assert stdout_buf.getvalue() == b""
assert stderr_buf.getvalue() == b""
def test_cat_single_file_with_end_newline(self, cat_env_fixture):
content = "this is a content withe \\n\nfor testing xoreutil's cat\n"
with open(self.tempfile, "w") as f:
f.write(content)
expected_content = content.replace("\n", os.linesep)
stdin = io.StringIO()
stdout_buf = io.BytesIO()
stderr_buf = io.BytesIO()
stdout = io.TextIOWrapper(stdout_buf)
stderr = io.TextIOWrapper(stderr_buf)
opts = cat._cat_parse_args([])
cat._cat_single_file(opts, self.tempfile, stdin, stdout, stderr)
stdout.flush()
stderr.flush()
assert stdout_buf.getvalue() == bytes(expected_content, "utf-8")
assert stderr_buf.getvalue() == b""
def test_cat_single_file_work_exist_content(self, cat_env_fixture,
content):
with open(self.tempfile, "w") as f:
f.write(content)
expected_content = content.replace("\n", os.linesep)
stdin = io.StringIO()
stdout_buf = io.BytesIO()
stderr_buf = io.BytesIO()
stdout = io.TextIOWrapper(stdout_buf)
stderr = io.TextIOWrapper(stderr_buf)
opts = cat._cat_parse_args([])
cat._cat_single_file(opts, self.tempfile, stdin, stdout, stderr)
stdout.flush()
stderr.flush()
assert stdout_buf.getvalue() == bytes(expected_content, "utf-8")
assert stderr_buf.getvalue() == b""