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-rw-r--r--numpy/testing/tests/test_utils.py18
1 files changed, 16 insertions, 2 deletions
diff --git a/numpy/testing/tests/test_utils.py b/numpy/testing/tests/test_utils.py
index 8099db0b7..e54fbc390 100644
--- a/numpy/testing/tests/test_utils.py
+++ b/numpy/testing/tests/test_utils.py
@@ -507,7 +507,8 @@ class TestAlmostEqual(_GenericTest):
self._test_not_equal(x, z)
def test_error_message(self):
- """Check the message is formatted correctly for the decimal value"""
+ """Check the message is formatted correctly for the decimal value.
+ Also check the message when input includes inf or nan (gh12200)"""
x = np.array([1.00000000001, 2.00000000002, 3.00003])
y = np.array([1.00000000002, 2.00000000003, 3.00004])
@@ -531,6 +532,19 @@ class TestAlmostEqual(_GenericTest):
# remove anything that's not the array string
assert_equal(str(e).split('%)\n ')[1], b)
+ # Check the error message when input includes inf or nan
+ x = np.array([np.inf, 0])
+ y = np.array([np.inf, 1])
+ try:
+ self._assert_func(x, y)
+ except AssertionError as e:
+ msgs = str(e).split('\n')
+ # assert error percentage is 50%
+ assert_equal(msgs[3], '(mismatch 50.0%)')
+ # assert output array contains inf
+ assert_equal(msgs[4], ' x: array([inf, 0.])')
+ assert_equal(msgs[5], ' y: array([inf, 1.])')
+
def test_subclass_that_cannot_be_bool(self):
# While we cannot guarantee testing functions will always work for
# subclasses, the tests should ideally rely only on subclasses having
@@ -1115,7 +1129,7 @@ class TestStringEqual(object):
assert_raises(AssertionError,
lambda: assert_string_equal("foo", "hello"))
-
+
def test_regex(self):
assert_string_equal("a+*b", "a+*b")