xref: /llvm-project/libc/utils/hdrgen/tests/test_integration.py (revision 6ad0dcf67f5dccdf8506ce5f51d793062a1c6879)
1import argparse
2import subprocess
3import sys
4import unittest
5from pathlib import Path
6
7
8class TestHeaderGenIntegration(unittest.TestCase):
9    def setUp(self):
10        self.output_dir = TestHeaderGenIntegration.output_dir
11        self.source_dir = Path(__file__).parent
12        self.main_script = self.source_dir.parent / "main.py"
13
14    def run_script(self, yaml_file, output_file, entry_points):
15        command = [
16            "python3",
17            str(self.main_script),
18            str(yaml_file),
19            "--output",
20            str(output_file),
21        ]
22
23        for entry_point in entry_points:
24            command.extend(["--entry-point", entry_point])
25
26        result = subprocess.run(
27            command,
28            capture_output=True,
29            text=True,
30        )
31
32        print("STDOUT:", result.stdout)
33        print("STDERR:", result.stderr)
34        result.check_returncode()
35
36    def compare_files(self, generated_file, expected_file):
37        with generated_file.open("r") as gen_file:
38            gen_content = gen_file.read()
39        with expected_file.open("r") as exp_file:
40            exp_content = exp_file.read()
41
42        self.assertEqual(gen_content, exp_content)
43
44    def test_generate_header(self):
45        yaml_file = self.source_dir / "input/test_small.yaml"
46        expected_output_file = self.source_dir / "expected_output/test_header.h"
47        output_file = self.output_dir / "test_small.h"
48        entry_points = {"func_b", "func_a", "func_c", "func_d", "func_e"}
49
50        self.run_script(yaml_file, output_file, entry_points)
51
52        self.compare_files(output_file, expected_output_file)
53
54
55def main():
56    parser = argparse.ArgumentParser(description="TestHeaderGenIntegration arguments")
57    parser.add_argument(
58        "--output_dir",
59        type=Path,
60        help="Output directory for generated headers",
61        required=True,
62    )
63    args, remaining_argv = parser.parse_known_args()
64
65    TestHeaderGenIntegration.output_dir = args.output_dir
66
67    sys.argv[1:] = remaining_argv
68
69    unittest.main()
70
71
72if __name__ == "__main__":
73    main()
74