fix errors

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    fibered_mysql2 (0.3.1c)
+    fibered_mysql2 (0.3.1)
       em-synchrony (~> 1.0)
       rails (>= 6.1, < 7.1)
 

lib/active_record/connection_adapters/fibered_mysql2_adapter.rb

@@ -70,12 +70,8 @@ class << self
       def new_client(config)
         Mysql2::EM::Client.new(config)
       rescue Mysql2::Error => error
-        if error.error_number == ActiveRecord::ConnectionAdapters::Mysql2Adapter::ER_BAD_DB_ERROR
-          raise ActiveRecord::NoDatabaseError.db_error(config[:database])
-        elsif error.error_number == ActiveRecord::ConnectionAdapters::Mysql2Adapter::ER_ACCESS_DENIED_ERROR
-          raise ActiveRecord::DatabaseConnectionError.username_error(config[:username])
-        elsif [ActiveRecord::ConnectionAdapters::Mysql2Adapter::ER_CONN_HOST_ERROR, ActiveRecord::ConnectionAdapters::Mysql2Adapter::ER_UNKNOWN_HOST_ERROR].include?(error.error_number)
-          raise ActiveRecord::DatabaseConnectionError.hostname_error(config[:host])
+        if error.error_number == 1049
+          raise ActiveRecord::NoDatabaseError.new, error.message
         else
           raise ActiveRecord::ConnectionNotEstablished, error.message
         end

spec/unit/fibered_mysql2_adapter_spec.rb

@@ -48,30 +48,6 @@
         end
       end
 
-      context "when the error is an access denied error" do
-        let(:error_number) { 1045 }
-
-        it "raises a DatabaseConnectionError" do
-          expect { new_client }.to raise_error(ActiveRecord::DatabaseConnectionError)
-        end
-      end
-
-      context "when the error is a connection host error" do
-        let(:error_number) { 2003 }
-
-        it "raises a DatabaseConnectionError" do
-          expect { new_client }.to raise_error(ActiveRecord::DatabaseConnectionError)
-        end
-      end
-
-      context "when the error is an unknown host error" do
-        let(:error_number) { 2005 }
-
-        it "raises a DatabaseConnectionError" do
-          expect { new_client }.to raise_error(ActiveRecord::DatabaseConnectionError)
-        end
-      end
-
       context "when the error is not a known error" do
         let(:error_number) { 1234 }