Split empty from_tuples test

pandas/tests/indexes/test_multi.py

@@ -1717,14 +1717,15 @@ def test_from_tuples(self):
                                'from empty list',
                                MultiIndex.from_tuples, [])
 
+        idx = MultiIndex.from_tuples(((1, 2), (3, 4)), names=['a', 'b'])
+        assert len(idx) == 2
+
+    def test_from_tuples_empty(self):
         result = MultiIndex.from_tuples([], names=['a', 'b'])
         expected = MultiIndex.from_arrays(arrays=[[], []],
                                           names=['a', 'b'])
         tm.assert_index_equal(result, expected)
 
-        idx = MultiIndex.from_tuples(((1, 2), (3, 4)), names=['a', 'b'])
-        assert len(idx) == 2
-
     def test_argsort(self):
         result = self.index.argsort()
         expected = self.index.values.argsort()