convert old fail* assertions to assert*
diff --git a/Lib/test/test_tarfile.py b/Lib/test/test_tarfile.py
index f4c0035..76390c7 100644
--- a/Lib/test/test_tarfile.py
+++ b/Lib/test/test_tarfile.py
@@ -57,7 +57,7 @@
         tarinfo = self.tar.getmember("ustar/regtype")
         fobj = self.tar.extractfile(tarinfo)
         data = fobj.read()
-        self.assert_((len(data), md5sum(data)) == (tarinfo.size, md5_regtype),
+        self.assertTrue((len(data), md5sum(data)) == (tarinfo.size, md5_regtype),
                 "regular file extraction failed")
 
     def test_fileobj_readlines(self):
@@ -68,11 +68,11 @@
 
         lines1 = fobj1.readlines()
         lines2 = fobj2.readlines()
-        self.assert_(lines1 == lines2,
+        self.assertTrue(lines1 == lines2,
                 "fileobj.readlines() failed")
-        self.assert_(len(lines2) == 114,
+        self.assertTrue(len(lines2) == 114,
                 "fileobj.readlines() failed")
-        self.assert_(lines2[83] == \
+        self.assertTrue(lines2[83] == \
                 "I will gladly admit that Python is not the fastest running scripting language.\n",
                 "fileobj.readlines() failed")
 
@@ -83,7 +83,7 @@
         fobj2 = self.tar.extractfile(tarinfo)
         lines1 = fobj1.readlines()
         lines2 = list(io.TextIOWrapper(fobj2))
-        self.assert_(lines1 == lines2,
+        self.assertTrue(lines1 == lines2,
                      "fileobj.__iter__() failed")
 
     def test_fileobj_seek(self):
@@ -109,12 +109,12 @@
         self.assertEqual(2048, fobj.tell(),
                      "seek() to positive relative position failed")
         s = fobj.read(10)
-        self.assert_(s == data[2048:2058],
+        self.assertTrue(s == data[2048:2058],
                      "read() after seek failed")
         fobj.seek(0, 2)
         self.assertEqual(tarinfo.size, fobj.tell(),
                      "seek() to file's end failed")
-        self.assert_(fobj.read() == b"",
+        self.assertTrue(fobj.read() == b"",
                      "read() at file's end did not return empty string")
         fobj.seek(-tarinfo.size, 2)
         self.assertEqual(0, fobj.tell(),
@@ -123,13 +123,13 @@
         s1 = fobj.readlines()
         fobj.seek(512)
         s2 = fobj.readlines()
-        self.assert_(s1 == s2,
+        self.assertTrue(s1 == s2,
                      "readlines() after seek failed")
         fobj.seek(0)
         self.assertEqual(len(fobj.readline()), fobj.tell(),
                      "tell() after readline() failed")
         fobj.seek(512)
-        self.assert_(len(fobj.readline()) + 512 == fobj.tell(),
+        self.assertTrue(len(fobj.readline()) + 512 == fobj.tell(),
                      "tell() after seek() and readline() failed")
         fobj.seek(0)
         line = fobj.readline()
@@ -204,7 +204,7 @@
         # Old V7 tars create directory members using an AREGTYPE
         # header with a "/" appended to the filename field.
         tarinfo = self.tar.getmember("misc/dirtype-old-v7")
-        self.assert_(tarinfo.type == tarfile.DIRTYPE,
+        self.assertTrue(tarinfo.type == tarfile.DIRTYPE,
                 "v7 dirtype failed")
 
     def test_xstar_type(self):
@@ -218,15 +218,15 @@
 
     def test_check_members(self):
         for tarinfo in self.tar:
-            self.assert_(int(tarinfo.mtime) == 0o7606136617,
+            self.assertTrue(int(tarinfo.mtime) == 0o7606136617,
                     "wrong mtime for %s" % tarinfo.name)
             if not tarinfo.name.startswith("ustar/"):
                 continue
-            self.assert_(tarinfo.uname == "tarfile",
+            self.assertTrue(tarinfo.uname == "tarfile",
                     "wrong uname for %s" % tarinfo.name)
 
     def test_find_members(self):
-        self.assert_(self.tar.getmembers()[-1].name == "misc/eof",
+        self.assertTrue(self.tar.getmembers()[-1].name == "misc/eof",
                 "could not find all members")
 
     def test_extract_hardlink(self):
@@ -275,7 +275,7 @@
         tarinfo = self.tar.next() # get "regtype" (can't use getmember)
         fobj = self.tar.extractfile(tarinfo)
         data = fobj.read()
-        self.assert_((len(data), md5sum(data)) == (tarinfo.size, md5_regtype),
+        self.assertTrue((len(data), md5sum(data)) == (tarinfo.size, md5_regtype),
                 "regular file extraction failed")
 
     def test_provoke_stream_error(self):
@@ -292,7 +292,7 @@
             t2 = tar2.next()
             if t1 is None:
                 break
-            self.assert_(t2 is not None, "stream.next() failed.")
+            self.assertTrue(t2 is not None, "stream.next() failed.")
 
             if t2.islnk() or t2.issym():
                 self.assertRaises(tarfile.StreamError, tar2.extractfile, t2)
@@ -302,7 +302,7 @@
             v2 = tar2.extractfile(t2)
             if v1 is None:
                 continue
-            self.assert_(v2 is not None, "stream.extractfile() failed")
+            self.assertTrue(v2 is not None, "stream.extractfile() failed")
             self.assertEqual(v1.read(), v2.read(), "stream extraction failed")
 
         tar1.close()
@@ -364,7 +364,7 @@
 
     def _test_member(self, tarinfo, chksum=None, **kwargs):
         if chksum is not None:
-            self.assert_(md5sum(self.tar.extractfile(tarinfo).read()) == chksum,
+            self.assertTrue(md5sum(self.tar.extractfile(tarinfo).read()) == chksum,
                     "wrong md5sum for %s" % tarinfo.name)
 
         kwargs["mtime"] = 0o7606136617
@@ -375,7 +375,7 @@
             kwargs["uname"] = "tarfile"
             kwargs["gname"] = "tarfile"
         for k, v in kwargs.items():
-            self.assert_(getattr(tarinfo, k) == v,
+            self.assertTrue(getattr(tarinfo, k) == v,
                     "wrong value in %s field of %s" % (k, tarinfo.name))
 
     def test_find_regtype(self):
@@ -424,7 +424,7 @@
 
     def test_find_ustar_longname(self):
         name = "ustar/" + "12345/" * 39 + "1234567/longname"
-        self.assert_(name in self.tar.getnames())
+        self.assertTrue(name in self.tar.getnames())
 
     def test_find_regtype_oldv7(self):
         tarinfo = self.tar.getmember("misc/regtype-old-v7")
@@ -445,7 +445,7 @@
             tarinfo = self.tar.getmember(longname)
         except KeyError:
             self.fail("longname not found")
-        self.assert_(tarinfo.type != tarfile.DIRTYPE, "read longname as dirtype")
+        self.assertTrue(tarinfo.type != tarfile.DIRTYPE, "read longname as dirtype")
 
     def test_read_longlink(self):
         longname = self.subdir + "/" + "123/" * 125 + "longname"
@@ -454,7 +454,7 @@
             tarinfo = self.tar.getmember(longlink)
         except KeyError:
             self.fail("longlink not found")
-        self.assert_(tarinfo.linkname == longname, "linkname wrong")
+        self.assertTrue(tarinfo.linkname == longname, "linkname wrong")
 
     def test_truncated_longname(self):
         longname = self.subdir + "/" + "123/" * 125 + "longname"
@@ -534,7 +534,7 @@
         tar = tarfile.open(fileobj=fobj, mode=self.mode)
         tar.addfile(tarfile.TarInfo("foo"))
         tar.close()
-        self.assert_(fobj.closed is False, "external fileobjs must never closed")
+        self.assertTrue(fobj.closed is False, "external fileobjs must never closed")
 
 
 class WriteTest(WriteTestBase):
@@ -553,7 +553,7 @@
         tar.close()
 
         tar = tarfile.open(tmpname)
-        self.assert_(tar.getnames()[0] == name,
+        self.assertTrue(tar.getnames()[0] == name,
                 "failed to store 100 char filename")
         tar.close()
 
@@ -566,7 +566,7 @@
         fobj.close()
         tar.add(path)
         tar.close()
-        self.assert_(os.path.getsize(tmpname) > 0,
+        self.assertTrue(os.path.getsize(tmpname) > 0,
                 "tarfile is empty")
 
     # The test_*_size tests test for bug #1167128.
@@ -627,16 +627,16 @@
         dstname = os.path.abspath(tmpname)
 
         tar = tarfile.open(tmpname, self.mode)
-        self.assert_(tar.name == dstname, "archive name must be absolute")
+        self.assertTrue(tar.name == dstname, "archive name must be absolute")
 
         tar.add(dstname)
-        self.assert_(tar.getnames() == [], "added the archive to itself")
+        self.assertTrue(tar.getnames() == [], "added the archive to itself")
 
         cwd = os.getcwd()
         os.chdir(TEMPDIR)
         tar.add(dstname)
         os.chdir(cwd)
-        self.assert_(tar.getnames() == [], "added the archive to itself")
+        self.assertTrue(tar.getnames() == [], "added the archive to itself")
 
     def test_exclude(self):
         tempdir = os.path.join(TEMPDIR, "exclude")
@@ -677,14 +677,14 @@
             dec = bz2.BZ2Decompressor()
             data = open(tmpname, "rb").read()
             data = dec.decompress(data)
-            self.assert_(len(dec.unused_data) == 0,
+            self.assertTrue(len(dec.unused_data) == 0,
                     "found trailing data")
         else:
             fobj = open(tmpname, "rb")
             data = fobj.read()
             fobj.close()
 
-        self.assert_(data.count(b"\0") == tarfile.RECORDSIZE,
+        self.assertTrue(data.count(b"\0") == tarfile.RECORDSIZE,
                          "incorrect zero padding")
 
 
@@ -724,14 +724,14 @@
 
         v1 = self._calc_size(name, link)
         v2 = tar.offset
-        self.assert_(v1 == v2, "GNU longname/longlink creation failed")
+        self.assertTrue(v1 == v2, "GNU longname/longlink creation failed")
 
         tar.close()
 
         tar = tarfile.open(tmpname)
         member = tar.next()
-        self.failIf(member is None, "unable to read longname member")
-        self.assert_(tarinfo.name == member.name and \
+        self.assertFalse(member is None, "unable to read longname member")
+        self.assertTrue(tarinfo.name == member.name and \
                      tarinfo.linkname == member.linkname, \
                      "unable to read longname member")
 
@@ -791,18 +791,18 @@
         # The same name will be added as a REGTYPE every
         # time regardless of st_nlink.
         tarinfo = self.tar.gettarinfo(self.foo)
-        self.assert_(tarinfo.type == tarfile.REGTYPE,
+        self.assertTrue(tarinfo.type == tarfile.REGTYPE,
                 "add file as regular failed")
 
     def test_add_hardlink(self):
         tarinfo = self.tar.gettarinfo(self.bar)
-        self.assert_(tarinfo.type == tarfile.LNKTYPE,
+        self.assertTrue(tarinfo.type == tarfile.LNKTYPE,
                 "add file as hardlink failed")
 
     def test_dereference_hardlink(self):
         self.tar.dereference = True
         tarinfo = self.tar.gettarinfo(self.bar)
-        self.assert_(tarinfo.type == tarfile.REGTYPE,
+        self.assertTrue(tarinfo.type == tarfile.REGTYPE,
                 "dereferencing hardlink failed")
 
 
@@ -822,10 +822,10 @@
         tar = tarfile.open(tmpname)
         if link:
             l = tar.getmembers()[0].linkname
-            self.assert_(link == l, "PAX longlink creation failed")
+            self.assertTrue(link == l, "PAX longlink creation failed")
         else:
             n = tar.getmembers()[0].name
-            self.assert_(name == n, "PAX longname creation failed")
+            self.assertTrue(name == n, "PAX longname creation failed")
 
     def test_pax_global_header(self):
         pax_headers = {
@@ -847,8 +847,8 @@
 
         # Test if all the fields are strings.
         for key, val in tar.pax_headers.items():
-            self.assert_(type(key) is not bytes)
-            self.assert_(type(val) is not bytes)
+            self.assertTrue(type(key) is not bytes)
+            self.assertTrue(type(val) is not bytes)
             if key in tarfile.PAX_NUMBER_FIELDS:
                 try:
                     tarfile.PAX_NUMBER_FIELDS[key](val)
@@ -916,10 +916,10 @@
     def test_unicode_argument(self):
         tar = tarfile.open(tarname, "r", encoding="iso8859-1", errors="strict")
         for t in tar:
-            self.assert_(type(t.name) is str)
-            self.assert_(type(t.linkname) is str)
-            self.assert_(type(t.uname) is str)
-            self.assert_(type(t.gname) is str)
+            self.assertTrue(type(t.name) is str)
+            self.assertTrue(type(t.linkname) is str)
+            self.assertTrue(type(t.uname) is str)
+            self.assertTrue(type(t.gname) is str)
         tar.close()
 
     def test_uname_unicode(self):