def test_python_generation(testcase): """Perform a mypy-to-Python source code transformation test case.""" any a expected = testcase.output for i, s in enumerate(expected): expected[i] = s.replace('<prefix>', PREFIX) # By default, assume an identity translation. This is useful for # dynamically typed code. if expected == []: expected = testcase.input try: src = '\n'.join(testcase.input) # Parse and semantically analyze the source program. result = build.build('main', target=build.SEMANTIC_ANALYSIS, program_text=src, flags=[build.TEST_BUILTINS], alt_lib_path=test_temp_dir) a = [] first = True # Produce an output containing the pretty-printed forms (with original # formatting) of all the relevant source files. for fnam in sorted(result.files.keys()): f = result.files[fnam] # Omit the builtins module and files marked for omission. if not f.path.endswith(os.sep + 'builtins.py') and '-skip.' not in f.path: # Add file name + colon for files other than the first. if not first: a.append('{}:'.format( fix_path(remove_prefix(f.path, test_temp_dir)))) ver = 3 # Generate Python 2 instead of 3? if '-2' in testcase.name: ver = 2 v = PythonGenerator(ver) f.accept(v) s = v.output() if s != '': a += s.split('\n') first = False except CompileError as e: a = e.messages assert_string_arrays_equal( expected, a, 'Invalid source code output ({}, line {})'.format( testcase.file, testcase.line))
def test_transform(testcase): """Perform a runtime checking transformation test case.""" expected = remove_comment_lines(testcase.output) try: # Construct input as a single single. src = '\n'.join(testcase.input) # Parse and type check the input program. Perform transform manually # so that we can skip some files. result = build.build(program_path='main', target=build.TRANSFORM, program_text=src, alt_lib_path=test_temp_dir) a = [] first = True # Transform each file separately. for fnam in sorted(result.files.keys()): f = result.files[fnam] # Skip the builtins module and files with '_skip.' in the path. if not f.path.endswith('/builtins.py') and '_skip.' not in f.path: if not first: # Display path for files other than the first. a.append('{}:'.format(remove_prefix(f.path, test_temp_dir))) # Pretty print the transformed tree. v2 = PrettyPrintVisitor() f.accept(v2) s = v2.output() if s != '': a += s.split('\n') first = False except CompileError as e: a = e.messages assert_string_arrays_equal_wildcards( expected, a, 'Invalid source code output ({}, line {})'.format(testcase.file, testcase.line))