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import pytest
import subprocess
import textwrap
from labgrid.util.helper import processwrapper
def test_processwrapper_passes():
processwrapper.check_output(["true"])
def test_processwrapper_fails():
with pytest.raises(subprocess.CalledProcessError):
processwrapper.check_output(["false"])
def test_processwrapper_output(tmpdir):
content = textwrap.dedent(
"""\
A
B
C
"""
)
tmpfile = tmpdir.join("output.txt")
tmpfile.write(content)
output = processwrapper.check_output(["cat", str(tmpfile)])
assert output.decode("utf-8") == content
def test_processwrapper_input():
content = textwrap.dedent(
"""\
A
B
C
"""
)
output = processwrapper.check_output(["cat", "-"], input=content.encode("utf-8"))
assert output.decode("utf-8") == content
def test_processwrapper_empty_input():
output = processwrapper.check_output(["cat", "-"], input=b"")
assert output.decode("utf-8") == ""
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