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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
import subprocess
import tempfile
import sys
from pathlib import Path
# run pytest-3
def diff_code(actual_code, expected_file):
"""Helper to run diff if something fails (Linux only)."""
with tempfile.NamedTemporaryFile(suffix=".cpp") as tf:
tf.write(actual_code.encode('utf-8'))
tf.flush()
diff_cmd = ["diff", "-u", expected_file, tf.name]
subprocess.run(diff_cmd)
def run_converter(tool, file):
"""Run the converter and return C++ code generated from file."""
cmd = [sys.executable, tool, "--stdout", file]
output = ""
with subprocess.Popen(cmd, stdout=subprocess.PIPE) as proc:
output_b, errors_b = proc.communicate()
output = output_b.decode('utf-8')
if errors_b:
print(errors_b.decode('utf-8'), file=sys.stderr)
return output
def test_examples():
dir = Path(__file__).resolve().parent
tool = dir.parents[1] / "qtpy2cpp.py"
assert tool.is_file
for test_file in (dir / "baseline").glob("*.py"):
assert test_file.is_file
expected_file = test_file.parent / (test_file.stem + ".cpp")
if expected_file.is_file():
actual_code = run_converter(tool, test_file)
assert actual_code
expected_code = expected_file.read_text()
# Strip the license
code_start = expected_code.find("// Converted from")
assert code_start != -1
expected_code = expected_code[code_start:]
if actual_code != expected_code:
diff_code(actual_code, expected_file)
assert actual_code == expected_code
else:
print(f"Warning, {test_file} is missing a .cpp file.",
file=sys.stderr)
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