Port test_resource.py to unittest.

Lib/test/output/test_resource

-test_resource
-True

Lib/test/test_resource.py

-import os
-import resource
+import unittest
+from test import test_support
 
-from test.test_support import TESTFN
 
-# This test is checking a few specific problem spots.  RLIMIT_FSIZE
-# should be RLIM_INFINITY, which will be a really big number on a
-# platform with large file support.  On these platforms, we need to
-# test that the get/setrlimit functions properly convert the number to
-# a C long long and that the conversion doesn't raise an error.
+import os, resource
 
-try:
-    cur, max = resource.getrlimit(resource.RLIMIT_FSIZE)
-except AttributeError:
+# This test is checking a few specific problem spots with the resource module.
+
+class ResourceTest(unittest.TestCase):
+    def test_fsize_ismax(self):
+       
+        try:
+            (cur, max) = resource.getrlimit(resource.RLIMIT_FSIZE)
+        except AttributeError:
             pass
-else:
-    print resource.RLIM_INFINITY == max
+        else:
+            # RLIMIT_FSIZE should be RLIM_INFINITY, which will be a really big
+            # number on a platform with large file support.  On these platforms,
+            # we need to test that the get/setrlimit functions properly convert
+            # the number to a C long long and that the conversion doesn't raise
+            # an error.
+            self.assertEqual(resource.RLIM_INFINITY, max)
             resource.setrlimit(resource.RLIMIT_FSIZE, (cur, max))
 
-# Now check to see what happens when the RLIMIT_FSIZE is small.  Some
-# versions of Python were terminated by an uncaught SIGXFSZ, but
-# pythonrun.c has been fixed to ignore that exception.  If so, the
-# write() should return EFBIG when the limit is exceeded.
-
-# At least one platform has an unlimited RLIMIT_FSIZE and attempts to
-# change it raise ValueError instead.
+    def test_fsize_enforced(self):
+        try:
+            (cur, max) = resource.getrlimit(resource.RLIMIT_FSIZE)
+        except AttributeError:
+            pass
+        else:
+            # Check to see what happens when the RLIMIT_FSIZE is small.  Some
+            # versions of Python were terminated by an uncaught SIGXFSZ, but
+            # pythonrun.c has been fixed to ignore that exception.  If so, the
+            # write() should return EFBIG when the limit is exceeded.
             
-try:
+            # At least one platform has an unlimited RLIMIT_FSIZE and attempts
+            # to change it raise ValueError instead.
+            try:
                 try:
                     resource.setrlimit(resource.RLIMIT_FSIZE, (1024, max))
-        limit_set = 1
+                    limit_set = True
                 except ValueError:
-        limit_set = 0
-    f = open(TESTFN, "wb")
+                    limit_set = False
+                f = open(test_support.TESTFN, "wb")
                 f.write("X" * 1024)
                 try:
                     f.write("Y")
@@ -40,17 +50,29 @@ try:
                     if not limit_set:
                         raise
                 f.close()
-    os.unlink(TESTFN)
-finally:
+                os.unlink(test_support.TESTFN)
+            finally:
                 resource.setrlimit(resource.RLIMIT_FSIZE, (cur, max))
 
-# And be sure that setrlimit is checking for really large values
-too_big = 10L**50
-try:
+    def test_fsize_toobig(self):
+        # Be sure that setrlimit is checking for really large values
+        too_big = 10L**50
+        try:
+            (cur, max) = resource.getrlimit(resource.RLIMIT_FSIZE)
+        except AttributeError:
+            pass
+        else:
+            try:
                 resource.setrlimit(resource.RLIMIT_FSIZE, (too_big, max))
-except (OverflowError, ValueError):
+            except (OverflowError, ValueError):
                 pass
-try:
+            try:
                 resource.setrlimit(resource.RLIMIT_FSIZE, (max, too_big))
-except (OverflowError, ValueError):
+            except (OverflowError, ValueError):
                 pass
+
+def test_main(verbose=None):
+    test_support.run_unittest(ResourceTest)
+
+if __name__ == "__main__":
+    test_main()