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require "cases/helper"
class SchemaMigrationsTest < ActiveRecord::Mysql2TestCase
def test_renaming_index_on_foreign_key
connection.add_index "engines", "car_id"
connection.add_foreign_key :engines, :cars, name: "fk_engines_cars"
connection.rename_index("engines", "index_engines_on_car_id", "idx_renamed")
assert_equal ["idx_renamed"], connection.indexes("engines").map(&:name)
ensure
connection.remove_foreign_key :engines, name: "fk_engines_cars"
end
def test_initializes_schema_migrations_for_encoding_utf8mb4
with_encoding_utf8mb4 do
table_name = ActiveRecord::SchemaMigration.table_name
connection.drop_table table_name, if_exists: true
ActiveRecord::SchemaMigration.create_table
assert connection.column_exists?(table_name, :version, :string)
end
end
def test_initializes_internal_metadata_for_encoding_utf8mb4
with_encoding_utf8mb4 do
table_name = ActiveRecord::InternalMetadata.table_name
connection.drop_table table_name, if_exists: true
ActiveRecord::InternalMetadata.create_table
assert connection.column_exists?(table_name, :key, :string)
end
end
private
def with_encoding_utf8mb4
database_name = connection.current_database
database_info = connection.select_one("SELECT * FROM information_schema.schemata WHERE schema_name = '#{database_name}'")
original_charset = database_info["DEFAULT_CHARACTER_SET_NAME"]
original_collation = database_info["DEFAULT_COLLATION_NAME"]
execute("ALTER DATABASE #{database_name} DEFAULT CHARACTER SET utf8mb4")
yield
ensure
execute("ALTER DATABASE #{database_name} DEFAULT CHARACTER SET #{original_charset} COLLATE #{original_collation}")
end
def connection
@connection ||= ActiveRecord::Base.connection
end
def execute(sql)
connection.execute(sql)
end
end
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