add hg and python

1 files changed, 236 insertions, 0 deletions

diff --git a/sys/lib/python/test/test_import.py b/sys/lib/python/test/test_import.py
new file mode 100644
index 000000000..ed97f84fe
--- /dev/null
+++ b/sys/lib/python/test/test_import.py
@@ -0,0 +1,236 @@
+from test.test_support import TESTFN, TestFailed
+
+import os
+import random
+import sys
+import py_compile
+
+# Brief digression to test that import is case-sensitive:  if we got this
+# far, we know for sure that "random" exists.
+try:
+    import RAnDoM
+except ImportError:
+    pass
+else:
+    raise TestFailed("import of RAnDoM should have failed (case mismatch)")
+
+# Another brief digression to test the accuracy of manifest float constants.
+from test import double_const  # don't blink -- that *was* the test
+
+def remove_files(name):
+    for f in (name + os.extsep + "py",
+              name + os.extsep + "pyc",
+              name + os.extsep + "pyo",
+              name + os.extsep + "pyw",
+              name + "$py.class"):
+        if os.path.exists(f):
+            os.remove(f)
+
+def test_with_extension(ext): # ext normally ".py"; perhaps ".pyw"
+    source = TESTFN + ext
+    pyo = TESTFN + os.extsep + "pyo"
+    if sys.platform.startswith('java'):
+        pyc = TESTFN + "$py.class"
+    else:
+        pyc = TESTFN + os.extsep + "pyc"
+
+    f = open(source, "w")
+    print >> f, "# This tests Python's ability to import a", ext, "file."
+    a = random.randrange(1000)
+    b = random.randrange(1000)
+    print >> f, "a =", a
+    print >> f, "b =", b
+    f.close()
+
+    try:
+        try:
+            mod = __import__(TESTFN)
+        except ImportError, err:
+            raise ValueError("import from %s failed: %s" % (ext, err))
+
+        if mod.a != a or mod.b != b:
+            print a, "!=", mod.a
+            print b, "!=", mod.b
+            raise ValueError("module loaded (%s) but contents invalid" % mod)
+    finally:
+        os.unlink(source)
+
+    try:
+        try:
+            reload(mod)
+        except ImportError, err:
+            raise ValueError("import from .pyc/.pyo failed: %s" % err)
+    finally:
+        try:
+            os.unlink(pyc)
+        except os.error:
+            pass
+        try:
+            os.unlink(pyo)
+        except os.error:
+            pass
+        del sys.modules[TESTFN]
+
+sys.path.insert(0, os.curdir)
+try:
+    test_with_extension(os.extsep + "py")
+    if sys.platform.startswith("win"):
+        for ext in ".PY", ".Py", ".pY", ".pyw", ".PYW", ".pYw":
+            test_with_extension(ext)
+finally:
+    del sys.path[0]
+
+# Verify that the imp module can correctly load and find .py files
+import imp
+x = imp.find_module("os")
+os = imp.load_module("os", *x)
+
+def test_module_with_large_stack(module):
+    # create module w/list of 65000 elements to test bug #561858
+    filename = module + os.extsep + 'py'
+
+    # create a file with a list of 65000 elements
+    f = open(filename, 'w+')
+    f.write('d = [\n')
+    for i in range(65000):
+        f.write('"",\n')
+    f.write(']')
+    f.close()
+
+    # compile & remove .py file, we only need .pyc (or .pyo)
+    f = open(filename, 'r')
+    py_compile.compile(filename)
+    f.close()
+    os.unlink(filename)
+
+    # need to be able to load from current dir
+    sys.path.append('')
+
+    # this used to crash
+    exec 'import ' + module
+
+    # cleanup
+    del sys.path[-1]
+    for ext in 'pyc', 'pyo':
+        fname = module + os.extsep + ext
+        if os.path.exists(fname):
+            os.unlink(fname)
+
+test_module_with_large_stack('longlist')
+
+def test_failing_import_sticks():
+    source = TESTFN + os.extsep + "py"
+    f = open(source, "w")
+    print >> f, "a = 1/0"
+    f.close()
+
+    # New in 2.4, we shouldn't be able to import that no matter how often
+    # we try.
+    sys.path.insert(0, os.curdir)
+    try:
+        for i in 1, 2, 3:
+            try:
+                mod = __import__(TESTFN)
+            except ZeroDivisionError:
+                if TESTFN in sys.modules:
+                    raise TestFailed("damaged module in sys.modules", i)
+            else:
+                raise TestFailed("was able to import a damaged module", i)
+    finally:
+        sys.path.pop(0)
+        remove_files(TESTFN)
+
+test_failing_import_sticks()
+
+def test_failing_reload():
+    # A failing reload should leave the module object in sys.modules.
+    source = TESTFN + os.extsep + "py"
+    f = open(source, "w")
+    print >> f, "a = 1"
+    print >> f, "b = 2"
+    f.close()
+
+    sys.path.insert(0, os.curdir)
+    try:
+        mod = __import__(TESTFN)
+        if TESTFN not in sys.modules:
+            raise TestFailed("expected module in sys.modules")
+        if mod.a != 1 or mod.b != 2:
+            raise TestFailed("module has wrong attribute values")
+
+        # On WinXP, just replacing the .py file wasn't enough to
+        # convince reload() to reparse it.  Maybe the timestamp didn't
+        # move enough.  We force it to get reparsed by removing the
+        # compiled file too.
+        remove_files(TESTFN)
+
+        # Now damage the module.
+        f = open(source, "w")
+        print >> f, "a = 10"
+        print >> f, "b = 20//0"
+        f.close()
+        try:
+            reload(mod)
+        except ZeroDivisionError:
+            pass
+        else:
+            raise TestFailed("was able to reload a damaged module")
+
+        # But we still expect the module to be in sys.modules.
+        mod = sys.modules.get(TESTFN)
+        if mod is None:
+            raise TestFailed("expected module to still be in sys.modules")
+        # We should have replaced a w/ 10, but the old b value should
+        # stick.
+        if mod.a != 10 or mod.b != 2:
+            raise TestFailed("module has wrong attribute values")
+
+    finally:
+        sys.path.pop(0)
+        remove_files(TESTFN)
+        if TESTFN in sys.modules:
+            del sys.modules[TESTFN]
+
+test_failing_reload()
+
+def test_import_name_binding():
+    # import x.y.z binds x in the current namespace
+    import test as x
+    import test.test_support
+    assert x is test, x.__name__
+    assert hasattr(test.test_support, "__file__")
+
+    # import x.y.z as w binds z as w
+    import test.test_support as y
+    assert y is test.test_support, y.__name__
+
+test_import_name_binding()
+
+def test_import_initless_directory_warning():
+    import warnings
+    oldfilters = warnings.filters[:]
+    warnings.simplefilter('error', ImportWarning);
+    try:
+        # Just a random non-package directory we always expect to be
+        # somewhere in sys.path...
+        __import__("site-packages")
+    except ImportWarning:
+        pass
+    else:
+        raise AssertionError
+    finally:
+        warnings.filters = oldfilters
+
+test_import_initless_directory_warning()
+
+def test_infinite_reload():
+     # Bug #742342 reports that Python segfaults (infinite recursion in C)
+     #  when faced with self-recursive reload()ing.
+
+     sys.path.insert(0, os.path.dirname(__file__))
+     try:
+         import infinite_reload
+     finally:
+         sys.path.pop(0)
+
+test_infinite_reload()