Test directly whether Quantity.__index__() works rather than its effect.

mhvk · mhvk · commit e5fdb1423837 · 2015-06-17T13:49:39.000-04:00
In numpy-dev, the __index__ can no longer be used to multiply lists; for discussion about why, really, this was always broken & wrong, see numpy/numpy#5864.
diff --git a/astropy/units/tests/test_quantity.py b/astropy/units/tests/test_quantity.py
@@ -467,7 +467,7 @@ def test_numeric_converters(self):
             assert exc.value.args[0] == converter_err_msg
 
         with pytest.raises(TypeError) as exc:
-            q1 * ['a', 'b', 'c']
+            q1.__index__()
         assert exc.value.args[0] == index_err_msg
 
         # dimensionless but scaled is OK, however
@@ -480,7 +480,7 @@ def test_numeric_converters(self):
             assert long(q2) == long(q2.to(u.dimensionless_unscaled).value)
 
         with pytest.raises(TypeError) as exc:
-            q2 * ['a', 'b', 'c']
+            q2.__index__()
         assert exc.value.args[0] == index_err_msg
 
         # dimensionless unscaled is OK, though for index needs to be int
@@ -492,7 +492,7 @@ def test_numeric_converters(self):
             assert long(q3) == 1
 
         with pytest.raises(TypeError) as exc:
-            q1 * ['a', 'b', 'c']
+            q1.__index__()
         assert exc.value.args[0] == index_err_msg
 
         # integer dimensionless unscaled is good for all
@@ -503,7 +503,7 @@ def test_numeric_converters(self):
         if six.PY2:
             assert long(q4) == 2
 
-        assert q4 * ['a', 'b', 'c'] == ['a', 'b', 'c', 'a', 'b', 'c']
+        assert q4.__index__() == 2
 
         # but arrays are not OK
         q5 = u.Quantity([1, 2], u.m)
@@ -521,7 +521,7 @@ def test_numeric_converters(self):
             assert exc.value.args[0] == converter_err_msg
 
         with pytest.raises(TypeError) as exc:
-            q5 * ['a', 'b', 'c']
+            q5.__index__()
         assert exc.value.args[0] == index_err_msg
 
     def test_array_converters(self):
