Munit coverage for APIKit flows Part2 - Mule4

In my previous articles How to generate Mule flow using RAML and MUnit complete coverage for ApiKit flows Part1 - Mule4 we have seen how Mule application can be generated using APIkit RAML and how we can test our routing flows using MUnit Test Suites.

Now here in this article we will see how to write MUnit test cases for flows that were created with APIkit RAML for APIKit Validation scenarios.

APIkit Router validates the incoming requests, HTTP methods, URI and URI parameter, header and query parameters against the structure or validation defined in RAML. It also routes the message to the respective flow and serials response. Message routing consists of incoming API requests to existing Mule flows and returning outgoing HTTP response codes to exceptions.

Things to consider while writing MUnits for Validation flows:

Above configuration is needed to validate HTTP response code. This you can configure as per your test scenarios.

After adding MUnit for APIKit Validation flows your MUnit coverage report has been increased as shown below:

Please find sample Mule project in Github munit-for-apikit-flow-part2-mule4

Happy Learning :)

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MUnit coverage for APIKit flows Part1 - Mule4

In my last article How to generate Mule flow using RAML.
Now here in this article we will see how to write MUnit test cases for flows that were created with APIkit RAML.

Application takes a RAML file and maps it to an implementation of an API in Mule.

We will see the implementation routes that handles incoming request based on Http methods (GET, POST, PUT, DELETE) and URL using MUnit.

Now let's start writing MUnits for routing flows:

Step 1: Generate Munit Flow from Apikit Flow: 

Right click on APIKit router-->Create Test Suite for Munit

Step 2: Run MUnit Suite:

Right click Munit flow--> select Run MUnit suite

Step 3: Flow execution sequence

Please check your MUnit test configuration if your MUnit is not behaving properly. Enable flow sources must be configured to List of Flows section as shown below:

Then MUnit will find the source and will execute the test accordingly.

Step 4: Coverage report:

Please find sample Mule project in Github munit-for-apikit-flow-part1-mule4

After running MUnit you will get MUnit coverage report like shown above. But If you have noticed APIKit main flow is having very less coverage percentage and it only covers resource flows. So, how we can increase or get the MUnit coverage for APIKit main flow which includes exception handling processors?

For this you needed to write MUnit additionally to cover these scenario which I will explain in my next article.

Happy Learning :)

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Create APIKit project using raml-Mule4

In this article we will see how we can create or generate Mule 4 project using RAML.
We will also see how Mule flow responds in case of Success and Validation scenarios.

RAML stands for RESTful API Modeling Language

RAML (Rest API Modeling Language) is based on YAML format, which is used to design REST APIs. RAML provides various features, including standardization, re-usability, easy readability, and much more. RAML provides a structure to the API which is useful for developers to start development process and it also helps clients to understands the request and response structure outcomes before hand.

What RAML contains?

• Endpoint URL with its Query parameters and URI parameters,
• HTTP methods to which API is listening to (GET, POST, PUT, DELETE),
• Request and response schema and sample message,
• HTTP response code that an API will return (eg: 200, 400, 404, 415, 500).

Lets jump into code build:

Step 1: Download a sample RAML file link

Step 2: Create Mule project: From AnypointStudio

             GoTo File--> New --> Mule Project

• Provide Project Name
• Select Runtime
• Import RAML file by specifying file location or URL
• Click finish button

Step 3: Building and Running Mule Project

Right click on the project --> Run As --> Mule Application

Step 4: Test your deployed App through API Console

Step 5: Check Success Scenario

Flow execution sequence in Success Scenario

In API console, When we click on "GET"

• Request will be sent to HTTP listener endpoint.
• HTTP listener takes the request and forwards to APIKit router
• APIKit validates the incoming requests and passes it to designated flow.
• Here it is passing to "get:\apikit-login:apikit-raml-flow-Mule4-config" flow
• Request is processed and gives a 200 OK response.

Step 6: Check Error Scenario

Flow execution sequence in Error Scenario(Bad Request)
On Api Console, When we execute DELETE operation.

• Enter incorrect value in Delete Id.
• Request will receive to HTTP endpoint and forwards to APIKit router.
• APIKit router validates the incoming request.
• On validation failed APIKit throws an error and which is caught by error handler.
• Error handler passes the flow execution to APIKIT:BAD_REQUEST scope and gives response with  status code 400

Below are some error codes and their meanings which we normally uses in our development.

Please find sample Mule project in Github raml-apikit-flow-mule4

Next article we will see how to write MUnit test cases for these APIKit flows - Part 1

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