diff options
Diffstat (limited to 'numpy/lib/tests/test_function_base.py')
| -rw-r--r-- | numpy/lib/tests/test_function_base.py | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/numpy/lib/tests/test_function_base.py b/numpy/lib/tests/test_function_base.py index 235b7f2fe..943544dd5 100644 --- a/numpy/lib/tests/test_function_base.py +++ b/numpy/lib/tests/test_function_base.py @@ -167,6 +167,29 @@ class TestAverage(TestCase): avg, scl = average(y, weights=w2, axis=1, returned=True) assert_array_equal(scl, np.array([1., 6.])) + def test_subclasses(self): + class subclass(np.ndarray): + pass + a = np.array([[1,2],[3,4]]).view(subclass) + w = np.array([[1,2],[3,4]]).view(subclass) + + assert_equal(type(np.average(a, weights=w)), subclass) + + # also test matrices + a = np.matrix([[1,2],[3,4]]) + w = np.matrix([[1,2],[3,4]]) + + r = np.average(a, axis=0, weights=w) + assert_equal(type(r), np.matrix) + assert_equal(r, [[2.5, 10.0/3]]) + + def test_upcasting(self): + types = [('i4', 'i4', 'f8'), ('i4', 'f4', 'f8'), ('f4', 'i4', 'f8'), + ('f4', 'f4', 'f4'), ('f4', 'f8', 'f8')] + for at, wt, rt in types: + a = np.array([[1,2],[3,4]], dtype=at) + w = np.array([[1,2],[3,4]], dtype=wt) + assert_equal(np.average(a, weights=w).dtype, np.dtype(rt)) class TestSelect(TestCase): choices = [np.array([1, 2, 3]), |