Issue #20546: Use specific asserts in int tests.

Lib/test/test_long.py

@@ -90,7 +90,7 @@ class LongTest(test_int.IntLongCommonTests, unittest.TestCase):
     # The sign of the number is also random.
 
     def getran(self, ndigits):
-        self.assertTrue(ndigits > 0)
+        self.assertGreater(ndigits, 0)
         nbits_hi = ndigits * SHIFT
         nbits_lo = nbits_hi - SHIFT + 1
         answer = 0L
@@ -588,7 +588,7 @@ class LongTest(test_int.IntLongCommonTests, unittest.TestCase):
             pass
         x = long2(1L<<100)
         y = int(x)
-        self.assertTrue(type(y) is long,
+        self.assertIs(type(y), long,
             "overflowing int conversion must return long not long subtype")
 
         # long -> Py_ssize_t conversion