1 files changed, 26 insertions, 0 deletions
diff --git a/activerecord/test/cases/invalid_connection_test.rb b/activerecord/test/cases/invalid_connection_test.rb
new file mode 100644
index 0000000000..a1be9c2780
--- /dev/null
+++ b/activerecord/test/cases/invalid_connection_test.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+require "cases/helper"
+
+if current_adapter?(:Mysql2Adapter)
+  class TestAdapterWithInvalidConnection < ActiveRecord::TestCase
+    self.use_transactional_tests = false
+
+    class Bird < ActiveRecord::Base
+    end
+
+    def setup
+      # Can't just use current adapter; sqlite3 will create a database
+      # file on the fly.
+      Bird.establish_connection adapter: "mysql2", database: "i_do_not_exist"
+    end
+
+    teardown do
+      Bird.remove_connection
+    end
+
+    test "inspect on Model class does not raise" do
+      assert_equal "#{Bird.name} (call '#{Bird.name}.connection' to establish a connection)", Bird.inspect
+    end
+  end
+end