CDK - Testing bit of CodePipeline where we setup a testing stage to test CloudFormation templates with Lambda

codeshots-cdk-testpipeline.ts

     // --- test stage and actions ---                                                                                     
                                                                                                                            
      const prepTestChanges = new codepipeline_actions.CloudFormationCreateReplaceChangeSetAction({                         
        actionName: 'PrepTestChanges',                                                                                      
        stackName: stageStackName,                                                                                          
        changeSetName: stageChangeSetName,                                                                                  
        adminPermissions: true,                                                                                             
        parameterOverrides: {                                                                                               
          "Environment": "STAGING",                                                                                         
          "MinSize": "1",                                                                                                   
          "MaxSize": "2",                                                                                                   
          "InstanceType": "t2.micro"                                                                                        
        },                                                                                                                  
        templatePath: buildOutput.atPath('template.yml'),                                                                   
        templateConfiguration: buildOutput.atPath('template-config.json'),                                                  
        runOrder: 1,                                                                                                        
      });                                                                                                                   
                                                                                                                            
      const executeTestChanges = new codepipeline_actions.CloudFormationExecuteChangeSetAction({                            
        actionName: 'ExecuteTestChanges',                                                                                   
        stackName: stageStackName,                                                                                          
        changeSetName: stageChangeSetName,                                                                                  
        runOrder: 2,                                                                                                        
      });                                                                                                                   
                                                                                                                            
      const lambdaTest = new codepipeline_actions.LambdaInvokeAction({                                                      
        actionName: 'lambdaIntegTest',                                                                                      
        lambda: integLambda,                                                                                                
        userParameters: [stageStackName],                                                                                   
        runOrder: 3,                                                                                                        
      });