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-rw-r--r--activerecord/test/cases/adapters/mysql/active_schema_test.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/activerecord/test/cases/adapters/mysql/active_schema_test.rb b/activerecord/test/cases/adapters/mysql/active_schema_test.rb
index ca6478f6ac..9050ae3fe3 100644
--- a/activerecord/test/cases/adapters/mysql/active_schema_test.rb
+++ b/activerecord/test/cases/adapters/mysql/active_schema_test.rb
@@ -47,6 +47,10 @@ class ActiveSchemaTest < ActiveRecord::TestCase
expected = "CREATE INDEX `index_people_on_last_name` USING btree ON `people` (`last_name`(10)) ALGORITHM = COPY"
assert_equal expected, add_index(:people, :last_name, :length => 10, using: :btree, algorithm: :copy)
+ assert_raise ArgumentError do
+ add_index(:people, :last_name, algorithm: :coyp)
+ end
+
expected = "CREATE INDEX `index_people_on_last_name_and_first_name` USING btree ON `people` (`last_name`(15), `first_name`(15)) "
assert_equal expected, add_index(:people, [:last_name, :first_name], :length => 15, :using => :btree)