DRY

spec/mysql2/statement_spec.rb

@@ -6,11 +6,13 @@
     @client = Mysql2::Client.new(DatabaseCredentials['root'].merge(:encoding => "utf8"))
   end
 
+  def stmt_count
+    @client.query("SHOW STATUS LIKE 'Prepared_stmt_count'").first['Value'].to_i
+  end
+
   it "should create a statement" do
     statement = nil
-    expect { statement = @client.prepare 'SELECT 1' }.to change {
-      @client.query("SHOW STATUS LIKE 'Prepared_stmt_count'").first['Value'].to_i
-    }.by(1)
+    expect { statement = @client.prepare 'SELECT 1' }.to change(&method(:stmt_count)).by(1)
     expect(statement).to be_an_instance_of(Mysql2::Statement)
   end
 
@@ -689,9 +691,7 @@
   context 'close' do
     it 'should free server resources' do
       stmt = @client.prepare 'SELECT 1'
-      expect { stmt.close }.to change {
-        @client.query("SHOW STATUS LIKE 'Prepared_stmt_count'").first['Value'].to_i
-      }.by(-1)
+      expect { stmt.close }.to change(&method(:stmt_count)).by(-1)
     end
 
     it 'should raise an error on subsequent execution' do