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| 1 | +#!/usr/bin/env python |
| 2 | +import os |
| 3 | +import ast |
| 4 | +import imp |
| 5 | +import glob |
| 6 | +import shutil |
| 7 | +import subprocess |
| 8 | +import tempfile |
| 9 | + |
| 10 | + |
| 11 | +def check_assignment(name, test_file, example_name): |
| 12 | + # Returns the exit code of the tests |
| 13 | + workdir = tempfile.mkdtemp(name) |
| 14 | + try: |
| 15 | + test_file_out = os.path.join(workdir, os.path.basename(test_file)) |
| 16 | + shutil.copyfile(test_file, test_file_out) |
| 17 | + shutil.copyfile(os.path.join(os.path.dirname(test_file), 'example.py'), |
| 18 | + os.path.join(workdir, '{}.py'.format(example_name))) |
| 19 | + return subprocess.call(['python', test_file_out]) |
| 20 | + finally: |
| 21 | + shutil.rmtree(workdir) |
| 22 | + |
| 23 | + |
| 24 | +def modname_heuristic(test_file): |
| 25 | + with open(test_file) as f: |
| 26 | + tree = ast.parse(f.read(), filename=test_file) |
| 27 | + # return the first nonexistent module that the tests import |
| 28 | + for node in ast.walk(tree): |
| 29 | + for modname in possible_module_names(node): |
| 30 | + if is_module_missing(modname): |
| 31 | + return modname |
| 32 | + |
| 33 | + |
| 34 | +def possible_module_names(node): |
| 35 | + if isinstance(node, ast.Import): |
| 36 | + for alias in node.names: |
| 37 | + yield alias.name |
| 38 | + elif isinstance(node, ast.ImportFrom): |
| 39 | + yield node.module |
| 40 | + |
| 41 | + |
| 42 | +def is_module_missing(modname): |
| 43 | + try: |
| 44 | + imp.find_module(modname) |
| 45 | + except ImportError: |
| 46 | + return True |
| 47 | + else: |
| 48 | + return False |
| 49 | + |
| 50 | + |
| 51 | +def assignment_name(test_file): |
| 52 | + return os.path.basename(test_file).rpartition('_')[0] |
| 53 | + |
| 54 | + |
| 55 | +def main(): |
| 56 | + failures = [] |
| 57 | + for test_file in glob.glob('./*/*_test.py'): |
| 58 | + name = assignment_name(test_file) |
| 59 | + if check_assignment(name, test_file, modname_heuristic(test_file)): |
| 60 | + failures.append(name) |
| 61 | + if failures: |
| 62 | + print 'FAILURES: ' + ' '.join(failures) |
| 63 | + raise SystemExit(1) |
| 64 | + else: |
| 65 | + print 'SUCCESS!' |
| 66 | + |
| 67 | +if __name__ == '__main__': |
| 68 | + main() |
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