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-rw-r--r--activesupport/test/test_case_test.rb9
1 files changed, 9 insertions, 0 deletions
diff --git a/activesupport/test/test_case_test.rb b/activesupport/test/test_case_test.rb
index dfbb8aa41d..d769a8c145 100644
--- a/activesupport/test/test_case_test.rb
+++ b/activesupport/test/test_case_test.rb
@@ -211,6 +211,15 @@ class AssertDifferenceTest < ActiveSupport::TestCase
end
end
+ def test_assert_changes_with_message
+ error = assert_raises Minitest::Assertion do
+ assert_changes "@object.num", "@object.num should 1", to: 1 do
+ end
+ end
+
+ assert_equal "@object.num should 1.\n\"@object.num\" didn't change to 1", error.message
+ end
+
def test_assert_no_changes_pass
assert_no_changes "@object.num" do
# ...