Style cleanup in test_import.
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Collin Winter
parent
ac1d93167c
commit
89b4f13024
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@ -1,13 +1,14 @@
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import unittest
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import __builtin__
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import imp
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import marshal
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import os
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import stat
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import py_compile
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import random
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import shutil
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import stat
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import sys
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import py_compile
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import unittest
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import warnings
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import marshal
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import imp
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from test.test_support import (unlink, TESTFN, unload, run_unittest,
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check_warnings, TestFailed, EnvironmentVarGuard)
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@ -22,11 +23,11 @@ def remove_files(name):
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os.remove(f)
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class ImportTest(unittest.TestCase):
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class ImportTests(unittest.TestCase):
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def testCaseSensitivity(self):
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# Brief digression to test that import is case-sensitive: if we got this
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# far, we know for sure that "random" exists.
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def test_case_sensitivity(self):
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# Brief digression to test that import is case-sensitive: if we got
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# this far, we know for sure that "random" exists.
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try:
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import RAnDoM
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except ImportError:
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@ -34,13 +35,14 @@ class ImportTest(unittest.TestCase):
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else:
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self.fail("import of RAnDoM should have failed (case mismatch)")
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def testDoubleConst(self):
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# Another brief digression to test the accuracy of manifest float constants.
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def test_double_const(self):
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# Another brief digression to test the accuracy of manifest float
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# constants.
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from test import double_const # don't blink -- that *was* the test
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def testImport(self):
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def test_import(self):
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def test_with_extension(ext):
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# ext normally ".py"; perhaps ".pyw"
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# The extension is normally ".py", perhaps ".pyw".
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source = TESTFN + ext
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pyo = TESTFN + os.extsep + "pyo"
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if sys.platform.startswith('java'):
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@ -48,13 +50,13 @@ class ImportTest(unittest.TestCase):
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else:
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pyc = TESTFN + os.extsep + "pyc"
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f = open(source, "w")
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print >> f, "# This tests Python's ability to import a", ext, "file."
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with open(source, "w") as f:
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print >> f, ("# This tests Python's ability to import a", ext,
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"file.")
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a = random.randrange(1000)
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b = random.randrange(1000)
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print >> f, "a =", a
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print >> f, "b =", b
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f.close()
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try:
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mod = __import__(TESTFN)
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@ -87,7 +89,7 @@ class ImportTest(unittest.TestCase):
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try:
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test_with_extension(os.extsep + "py")
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if sys.platform.startswith("win"):
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for ext in ".PY", ".Py", ".pY", ".pyw", ".PYW", ".pYw":
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for ext in [".PY", ".Py", ".pY", ".pyw", ".PYW", ".pYw"]:
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test_with_extension(ext)
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finally:
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del sys.path[0]
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@ -118,7 +120,7 @@ class ImportTest(unittest.TestCase):
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if TESTFN in sys.modules: del sys.modules[TESTFN]
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del sys.path[0]
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def testImpModule(self):
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def test_imp_module(self):
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# Verify that the imp module can correctly load and find .py files
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# XXX (ncoghlan): It would be nice to use test_support.CleanImport
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@ -138,30 +140,28 @@ class ImportTest(unittest.TestCase):
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self.assertIsNot(orig_getenv, new_os.getenv)
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def test_module_with_large_stack(self, module='longlist'):
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# create module w/list of 65000 elements to test bug #561858
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# Regression test for http://bugs.python.org/issue561858.
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filename = module + os.extsep + 'py'
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# create a file with a list of 65000 elements
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f = open(filename, 'w+')
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# Create a file with a list of 65000 elements.
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with open(filename, 'w+') as f:
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f.write('d = [\n')
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for i in range(65000):
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f.write('"",\n')
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f.write(']')
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f.close()
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# compile & remove .py file, we only need .pyc (or .pyo)
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f = open(filename, 'r')
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# Compile & remove .py file, we only need .pyc (or .pyo).
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with open(filename, 'r') as f:
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py_compile.compile(filename)
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f.close()
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os.unlink(filename)
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# need to be able to load from current dir
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# Need to be able to load from current dir.
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sys.path.append('')
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# this used to crash
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# This used to crash.
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exec 'import ' + module
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# cleanup
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# Cleanup.
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del sys.path[-1]
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for ext in 'pyc', 'pyo':
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fname = module + os.extsep + ext
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@ -170,15 +170,14 @@ class ImportTest(unittest.TestCase):
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def test_failing_import_sticks(self):
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source = TESTFN + os.extsep + "py"
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f = open(source, "w")
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with open(source, "w") as f:
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print >> f, "a = 1 // 0"
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f.close()
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# New in 2.4, we shouldn't be able to import that no matter how often
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# we try.
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sys.path.insert(0, os.curdir)
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try:
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for i in 1, 2, 3:
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for i in [1, 2, 3]:
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try:
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mod = __import__(TESTFN)
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except ZeroDivisionError:
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@ -193,10 +192,9 @@ class ImportTest(unittest.TestCase):
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def test_failing_reload(self):
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# A failing reload should leave the module object in sys.modules.
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source = TESTFN + os.extsep + "py"
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f = open(source, "w")
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with open(source, "w") as f:
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print >> f, "a = 1"
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print >> f, "b = 2"
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f.close()
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sys.path.insert(0, os.curdir)
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try:
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@ -212,16 +210,15 @@ class ImportTest(unittest.TestCase):
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remove_files(TESTFN)
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# Now damage the module.
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f = open(source, "w")
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with open(source, "w") as f:
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print >> f, "a = 10"
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print >> f, "b = 20//0"
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f.close()
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self.assertRaises(ZeroDivisionError, imp.reload, mod)
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# But we still expect the module to be in sys.modules.
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mod = sys.modules.get(TESTFN)
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self.assertFalse(mod is None, "expected module to still be in sys.modules")
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self.assertFalse(mod is None, "expected module to be in sys.modules")
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# We should have replaced a w/ 10, but the old b value should
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# stick.
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@ -235,8 +232,8 @@ class ImportTest(unittest.TestCase):
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del sys.modules[TESTFN]
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def test_infinite_reload(self):
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# Bug #742342 reports that Python segfaults (infinite recursion in C)
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# when faced with self-recursive reload()ing.
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# http://bugs.python.org/issue742342 reports that Python segfaults
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# (infinite recursion in C) when faced with self-recursive reload()ing.
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sys.path.insert(0, os.path.dirname(__file__))
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try:
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@ -245,13 +242,13 @@ class ImportTest(unittest.TestCase):
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sys.path.pop(0)
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def test_import_name_binding(self):
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# import x.y.z binds x in the current namespace
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# import x.y.z binds x in the current namespace.
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import test as x
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import test.test_support
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self.assertTrue(x is test, x.__name__)
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self.assertTrue(hasattr(test.test_support, "__file__"))
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# import x.y.z as w binds z as w
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# import x.y.z as w binds z as w.
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import test.test_support as y
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self.assertTrue(y is test.test_support, y.__name__)
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@ -262,7 +259,7 @@ class ImportTest(unittest.TestCase):
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warnings.simplefilter('error', ImportWarning)
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self.assertRaises(ImportWarning, __import__, "site-packages")
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def test_importbyfilename(self):
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def test_import_by_filename(self):
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path = os.path.abspath(TESTFN)
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try:
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__import__(path)
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@ -273,7 +270,7 @@ class ImportTest(unittest.TestCase):
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self.fail("import by path didn't raise an exception")
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class TestPycRewriting(unittest.TestCase):
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class PycRewritingTests(unittest.TestCase):
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# Test that the `co_filename` attribute on code objects always points
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# to the right file, even when various things happen (e.g. both the .py
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# and the .pyc file are renamed).
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@ -364,6 +361,7 @@ func_filename = func.func_code.co_filename
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mod = self.import_module()
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self.assertEqual(mod.constant.co_filename, foreign_code.co_filename)
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class PathsTests(unittest.TestCase):
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path = TESTFN
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@ -375,22 +373,20 @@ class PathsTests(unittest.TestCase):
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shutil.rmtree(self.path)
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sys.path[:] = self.syspath
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# http://bugs.python.org/issue1293
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# Regression test for http://bugs.python.org/issue1293.
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def test_trailing_slash(self):
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f = open(os.path.join(self.path, 'test_trailing_slash.py'), 'w')
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with open(os.path.join(self.path, 'test_trailing_slash.py'), 'w') as f:
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f.write("testdata = 'test_trailing_slash'")
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f.close()
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sys.path.append(self.path+'/')
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mod = __import__("test_trailing_slash")
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self.assertEqual(mod.testdata, 'test_trailing_slash')
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unload("test_trailing_slash")
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# http://bugs.python.org/issue3677
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# Regression test for http://bugs.python.org/issue3677.
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def _test_UNC_path(self):
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f = open(os.path.join(self.path, 'test_trailing_slash.py'), 'w')
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with open(os.path.join(self.path, 'test_trailing_slash.py'), 'w') as f:
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f.write("testdata = 'test_trailing_slash'")
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f.close()
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#create the UNC path, like \\myhost\c$\foo\bar
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# Create the UNC path, like \\myhost\c$\foo\bar.
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path = os.path.abspath(self.path)
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import socket
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hn = socket.gethostname()
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@ -406,7 +402,7 @@ class PathsTests(unittest.TestCase):
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test_UNC_path = _test_UNC_path
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class RelativeImport(unittest.TestCase):
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class RelativeImportTests(unittest.TestCase):
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def tearDown(self):
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try:
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del sys.modules["test.relimport"]
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@ -416,21 +412,25 @@ class RelativeImport(unittest.TestCase):
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def test_relimport_star(self):
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# This will import * from .test_import.
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from . import relimport
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self.assertTrue(hasattr(relimport, "RelativeImport"))
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self.assertTrue(hasattr(relimport, "RelativeImportTests"))
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def test_issue3221(self):
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# Regression test for http://bugs.python.org/issue3221.
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def check_absolute():
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exec "from os import path" in ns
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def check_relative():
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exec "from . import relimport" in ns
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# Check both OK with __package__ and __name__ correct
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ns = dict(__package__='test', __name__='test.notarealmodule')
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check_absolute()
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check_relative()
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# Check both OK with only __name__ wrong
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ns = dict(__package__='test', __name__='notarealpkg.notarealmodule')
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check_absolute()
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check_relative()
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# Check relative fails with only __package__ wrong
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ns = dict(__package__='foo', __name__='test.notarealmodule')
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with check_warnings() as w:
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@ -438,6 +438,7 @@ class RelativeImport(unittest.TestCase):
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self.assertIn('foo', str(w.message))
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self.assertEqual(w.category, RuntimeWarning)
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self.assertRaises(SystemError, check_relative)
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# Check relative fails with __package__ and __name__ wrong
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ns = dict(__package__='foo', __name__='notarealpkg.notarealmodule')
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with check_warnings() as w:
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@ -445,15 +446,17 @@ class RelativeImport(unittest.TestCase):
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self.assertIn('foo', str(w.message))
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self.assertEqual(w.category, RuntimeWarning)
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self.assertRaises(SystemError, check_relative)
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# Check both fail with package set to a non-string
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ns = dict(__package__=object())
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self.assertRaises(ValueError, check_absolute)
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self.assertRaises(ValueError, check_relative)
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def test_main(verbose=None):
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run_unittest(ImportTest, TestPycRewriting, PathsTests, RelativeImport)
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run_unittest(ImportTests, PycRewritingTests, PathsTests, RelativeImportTests)
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if __name__ == '__main__':
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# test needs to be a package, so we can do relative import
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# Test needs to be a package, so we can do relative imports.
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from test.test_import import test_main
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test_main()
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