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Frank Wierzbicki committed af220c2

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Lib/test/test_zipimport_support.py

+# This test module covers support in various parts of the standard library
+# for working with modules located inside zipfiles
+# The tests are centralised in this fashion to make it easy to drop them
+# if a platform doesn't support zipimport
+import test.test_support
+import os
+import os.path
+import sys
+import textwrap
+import zipfile
+import zipimport
+import doctest
+import inspect
+import linecache
+import pdb
+import warnings
+from test.script_helper import (spawn_python, kill_python, run_python,
+                                temp_dir, make_script, make_zip_script)
+
+verbose = test.test_support.verbose
+
+# Library modules covered by this test set
+#  pdb (Issue 4201)
+#  inspect (Issue 4223)
+#  doctest (Issue 4197)
+
+# Other test modules with zipimport related tests
+#  test_zipimport (of course!)
+#  test_cmd_line_script (covers the zipimport support in runpy)
+
+# Retrieve some helpers from other test cases
+from test import test_doctest, sample_doctest
+from test.test_importhooks import ImportHooksBaseTestCase
+
+
+def _run_object_doctest(obj, module):
+    # Direct doctest output (normally just errors) to real stdout; doctest
+    # output shouldn't be compared by regrtest.
+    save_stdout = sys.stdout
+    sys.stdout = test.test_support.get_original_stdout()
+    try:
+        finder = doctest.DocTestFinder(verbose=verbose, recurse=False)
+        runner = doctest.DocTestRunner(verbose=verbose)
+        # Use the object's fully qualified name if it has one
+        # Otherwise, use the module's name
+        try:
+            name = "%s.%s" % (obj.__module__, obj.__name__)
+        except AttributeError:
+            name = module.__name__
+        for example in finder.find(obj, name, module):
+            runner.run(example)
+        f, t = runner.failures, runner.tries
+        if f:
+            raise test.test_support.TestFailed("%d of %d doctests failed" % (f, t))
+    finally:
+        sys.stdout = save_stdout
+    if verbose:
+        print 'doctest (%s) ... %d tests with zero failures' % (module.__name__, t)
+    return f, t
+
+
+
+class ZipSupportTests(ImportHooksBaseTestCase):
+    # We use the ImportHooksBaseTestCase to restore
+    # the state of the import related information
+    # in the sys module after each test
+    # We also clear the linecache and zipimport cache
+    # just to avoid any bogus errors due to name reuse in the tests
+    def setUp(self):
+        linecache.clearcache()
+        zipimport._zip_directory_cache.clear()
+        ImportHooksBaseTestCase.setUp(self)
+
+
+    def test_inspect_getsource_issue4223(self):
+        test_src = "def foo(): pass\n"
+        with temp_dir() as d:
+            init_name = make_script(d, '__init__', test_src)
+            name_in_zip = os.path.join('zip_pkg',
+                                       os.path.basename(init_name))
+            zip_name, run_name = make_zip_script(d, 'test_zip',
+                                                init_name, name_in_zip)
+            os.remove(init_name)
+            sys.path.insert(0, zip_name)
+            import zip_pkg
+            self.assertEqual(inspect.getsource(zip_pkg.foo), test_src)
+
+    def test_doctest_issue4197(self):
+        # To avoid having to keep two copies of the doctest module's
+        # unit tests in sync, this test works by taking the source of
+        # test_doctest itself, rewriting it a bit to cope with a new
+        # location, and then throwing it in a zip file to make sure
+        # everything still works correctly
+        test_src = inspect.getsource(test_doctest)
+        test_src = test_src.replace(
+                         "from test import test_doctest",
+                         "import test_zipped_doctest as test_doctest")
+        test_src = test_src.replace("test.test_doctest",
+                                    "test_zipped_doctest")
+        test_src = test_src.replace("test.sample_doctest",
+                                    "sample_zipped_doctest")
+        sample_src = inspect.getsource(sample_doctest)
+        sample_src = sample_src.replace("test.test_doctest",
+                                        "test_zipped_doctest")
+        with temp_dir() as d:
+            script_name = make_script(d, 'test_zipped_doctest',
+                                            test_src)
+            zip_name, run_name = make_zip_script(d, 'test_zip',
+                                                script_name)
+            z = zipfile.ZipFile(zip_name, 'a')
+            z.writestr("sample_zipped_doctest.py", sample_src)
+            z.close()
+            if verbose:
+                zip_file = zipfile.ZipFile(zip_name, 'r')
+                print 'Contents of %r:' % zip_name
+                zip_file.printdir()
+                zip_file.close()
+            os.remove(script_name)
+            sys.path.insert(0, zip_name)
+            import test_zipped_doctest
+            # Some of the doc tests depend on the colocated text files
+            # which aren't available to the zipped version (the doctest
+            # module currently requires real filenames for non-embedded
+            # tests). So we're forced to be selective about which tests
+            # to run.
+            # doctest could really use some APIs which take a text
+            # string or a file object instead of a filename...
+            known_good_tests = [
+                test_zipped_doctest.SampleClass,
+                test_zipped_doctest.SampleClass.NestedClass,
+                test_zipped_doctest.SampleClass.NestedClass.__init__,
+                test_zipped_doctest.SampleClass.__init__,
+                test_zipped_doctest.SampleClass.a_classmethod,
+                test_zipped_doctest.SampleClass.a_property,
+                test_zipped_doctest.SampleClass.a_staticmethod,
+                test_zipped_doctest.SampleClass.double,
+                test_zipped_doctest.SampleClass.get,
+                test_zipped_doctest.SampleNewStyleClass,
+                test_zipped_doctest.SampleNewStyleClass.__init__,
+                test_zipped_doctest.SampleNewStyleClass.double,
+                test_zipped_doctest.SampleNewStyleClass.get,
+                test_zipped_doctest.old_test1,
+                test_zipped_doctest.old_test2,
+                test_zipped_doctest.old_test3,
+                test_zipped_doctest.old_test4,
+                test_zipped_doctest.sample_func,
+                test_zipped_doctest.test_DocTest,
+                test_zipped_doctest.test_DocTestParser,
+                test_zipped_doctest.test_DocTestRunner.basics,
+                test_zipped_doctest.test_DocTestRunner.exceptions,
+                test_zipped_doctest.test_DocTestRunner.option_directives,
+                test_zipped_doctest.test_DocTestRunner.optionflags,
+                test_zipped_doctest.test_DocTestRunner.verbose_flag,
+                test_zipped_doctest.test_Example,
+                test_zipped_doctest.test_debug,
+                test_zipped_doctest.test_pdb_set_trace,
+                test_zipped_doctest.test_pdb_set_trace_nested,
+                test_zipped_doctest.test_testsource,
+                test_zipped_doctest.test_trailing_space_in_test,
+                test_zipped_doctest.test_DocTestSuite,
+                test_zipped_doctest.test_DocTestFinder,
+            ]
+            # These remaining tests are the ones which need access
+            # to the data files, so we don't run them
+            fail_due_to_missing_data_files = [
+                test_zipped_doctest.test_DocFileSuite,
+                test_zipped_doctest.test_testfile,
+                test_zipped_doctest.test_unittest_reportflags,
+            ]
+            # Needed for test_DocTestParser and test_debug
+            deprecations = [
+                # Ignore all warnings about the use of class Tester in this module.
+                ("class Tester is deprecated", DeprecationWarning)]
+            if sys.py3kwarning:
+                deprecations += [
+                    ("backquote not supported", SyntaxWarning),
+                    ("execfile.. not supported", DeprecationWarning)]
+            with test.test_support.check_warnings(*deprecations):
+                for obj in known_good_tests:
+                    _run_object_doctest(obj, test_zipped_doctest)
+
+    def test_doctest_main_issue4197(self):
+        test_src = textwrap.dedent("""\
+                    class Test:
+                        ">>> 'line 2'"
+                        pass
+
+                    import doctest
+                    doctest.testmod()
+                    """)
+        pattern = 'File "%s", line 2, in %s'
+        with temp_dir() as d:
+            script_name = make_script(d, 'script', test_src)
+            exit_code, data = run_python(script_name)
+            expected = pattern % (script_name, "__main__.Test")
+            if verbose:
+                print "Expected line", expected
+                print "Got stdout:"
+                print data
+            self.assertIn(expected, data)
+            zip_name, run_name = make_zip_script(d, "test_zip",
+                                                script_name, '__main__.py')
+            exit_code, data = run_python(zip_name)
+            expected = pattern % (run_name, "__main__.Test")
+            if verbose:
+                print "Expected line", expected
+                print "Got stdout:"
+                print data
+            self.assertIn(expected, data)
+
+    def test_pdb_issue4201(self):
+        test_src = textwrap.dedent("""\
+                    def f():
+                        pass
+
+                    import pdb
+                    pdb.runcall(f)
+                    """)
+        with temp_dir() as d:
+            script_name = make_script(d, 'script', test_src)
+            p = spawn_python(script_name)
+            p.stdin.write('l\n')
+            data = kill_python(p)
+            self.assertIn(script_name, data)
+            zip_name, run_name = make_zip_script(d, "test_zip",
+                                                script_name, '__main__.py')
+            p = spawn_python(zip_name)
+            p.stdin.write('l\n')
+            data = kill_python(p)
+            self.assertIn(run_name, data)
+
+
+def test_main():
+    test.test_support.run_unittest(ZipSupportTests)
+    test.test_support.reap_children()
+
+if __name__ == '__main__':
+    test_main()
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