bpo-19119: Remove invalid test and rename a misnamed test (GH-15442)

Author: rhettinger

Lib/test/test_heapq.py

@@ -280,11 +280,6 @@ class LenOnly:
     def __len__(self):
         return 10
 
-class GetOnly:
-    "Dummy sequence class defining __getitem__ but not __len__."
-    def __getitem__(self, ndx):
-        return 10
-
 class CmpErr:
     "Dummy element that always raises an error during comparison"
     def __eq__(self, other):
@@ -396,15 +391,7 @@ def test_len_only(self):
         for f in (self.module.nlargest, self.module.nsmallest):
             self.assertRaises(TypeError, f, 2, LenOnly())
 
-    def test_get_only(self):
-        for f in (self.module.heapify, self.module.heappop):
-            self.assertRaises(TypeError, f, GetOnly())
-        for f in (self.module.heappush, self.module.heapreplace):
-            self.assertRaises(TypeError, f, GetOnly(), 10)
-        for f in (self.module.nlargest, self.module.nsmallest):
-            self.assertRaises(TypeError, f, 2, GetOnly())
-
-    def test_get_only(self):
+    def test_cmp_err(self):
         seq = [CmpErr(), CmpErr(), CmpErr()]
         for f in (self.module.heapify, self.module.heappop):
             self.assertRaises(ZeroDivisionError, f, seq)