Remove the test file before writing it in case there is no write permission.

This might help fix some of the failures on Windows box(es).  It doesn't hurt
either way and ensure the tests are a little more self contained (ie have
less assumptions).

4 files changed, 7 insertions, 5 deletions

diff --git a/Lib/test/test_array.py b/Lib/test/test_array.py
index a54594a..b11c9d6 100755
--- a/Lib/test/test_array.py
+++ b/Lib/test/test_array.py
@@ -163,6 +163,7 @@ class BaseTest(unittest.TestCase):
         a = array.array(self.typecode, 2*self.example)
         self.assertRaises(TypeError, a.tofile)
         self.assertRaises(TypeError, a.tofile, cStringIO.StringIO())
+        test_support.unlink(test_support.TESTFN)
         f = open(test_support.TESTFN, 'wb')
         try:
             a.tofile(f)
diff --git a/Lib/test/test_deque.py b/Lib/test/test_deque.py
index a185f78..0b751d8 100644
--- a/Lib/test/test_deque.py
+++ b/Lib/test/test_deque.py
@@ -63,6 +63,7 @@ class TestBasic(unittest.TestCase):
         self.assertEqual(list(d), range(7, 10))
         d = deque(xrange(200), maxlen=10)
         d.append(d)
+        test_support.unlink(test_support.TESTFN)
         fo = open(test_support.TESTFN, "wb")
         try:
             print >> fo, d,
@@ -281,6 +282,7 @@ class TestBasic(unittest.TestCase):
     def test_print(self):
         d = deque(xrange(200))
         d.append(d)
+        test_support.unlink(test_support.TESTFN)
         fo = open(test_support.TESTFN, "wb")
         try:
             print >> fo, d,
diff --git a/Lib/test/test_gzip.py b/Lib/test/test_gzip.py
index 1704a60..a1a267e 100644
--- a/Lib/test/test_gzip.py
+++ b/Lib/test/test_gzip.py
@@ -25,13 +25,10 @@ class TestGzip(unittest.TestCase):
     filename = test_support.TESTFN
 
     def setUp (self):
-        pass
+        test_support.unlink(self.filename)
 
     def tearDown (self):
-        try:
-            os.unlink(self.filename)
-        except os.error:
-            pass
+        test_support.unlink(self.filename)
 
 
     def test_write (self):
diff --git a/Lib/test/test_uu.py b/Lib/test/test_uu.py
index 346cfb2..25d9b60 100644
--- a/Lib/test/test_uu.py
+++ b/Lib/test/test_uu.py
@@ -114,6 +114,7 @@ class UUFileTest(unittest.TestCase):
     def test_encode(self):
         fin = fout = None
         try:
+            test_support.unlink(self.tmpin)
             fin = open(self.tmpin, 'wb')
             fin.write(plaintext)
             fin.close()
@@ -143,6 +144,7 @@ class UUFileTest(unittest.TestCase):
     def test_decode(self):
         f = None
         try:
+            test_support.unlink(self.tmpin)
             f = open(self.tmpin, 'w')
             f.write(encodedtextwrapped % (0644, self.tmpout))
             f.close()