IBM BPM, V8.0.1, All platforms > Authoring services in Integration Designer > Testing modules > Component testing > Testing with the Component Test Explorer

Defining global emulators in the Component Test Explorer

Using the Component Emulators page, you can define a global emulator for any component in any module on the system. This enables you to globally emulate a component that is not yet available but is needed for testing. It also enables you to globally emulate a component that is available for testing but has not yet been implemented.

Before you follow the instructions in this topic, you should read the topic "Component Test Explorer" to learn about the Component Test Explorer user interface.

To define global emulators:

Procedure

1. In the menu bar of Component Test Explorer, click Component Emulators. The Component Emulators page opens.

2. In the explorer area, click a component. The Component view is displayed for the selected component.

3. In the Emulate this Component field, select Yes. A check mark appears on the component in the explorer area to denote that the component is being emulated, as shown in the following figure:

   

4. If you want to define an emulator for an operation, expand the component and interface, then select the operation name and click Create. The details area displays the operation name and a table that contains the emulator rules as you create them. Each rule has a condition that describes the conditions under which the rule should be applied and a response that describes the output from the operation.

   

5. The Condition section includes the Groovy statements that are constructed when you click the buttons in the Request and Operations sections.

   You can also enter a Groovy statement directly. An evaluated Groovy statement determines whether the response should be returned for the operation invocation. The Condition section can contain many Groovy statements, but the last statement must evaluate to a Boolean string to determine whether the rule will be used. Only the final statement will be evaluated as the condition. To programmatically set the Condition expression, click Assist. The Condition section populates with a Condition expression that you can modify.

6. For example, if the condition should be If the request Vacation.id field is not null, then click Getter for the id field. The resultant Groovy statement will look like input.get('/vacation/id'). Then click the != Operation button and type null to get the following final expression: input.get('/vacation/id')!=null.

   

7. To save the condition, click Finish.

   You return to the previous screen with the condition expression completed.

8. In the Response section, specify static representations of the parameters that will be returned from the operation when the Groovy statement in the Condition section evaluates to true. To programmatically set the response, click Assist.

9. To assign programmatically calculated values to the response, specify Groovy statements in the Implementation section. Groovy statements can run when the static response values are set.

   You can specify multiple statements in this section.

   

10. The details section shows the input request as well as the output response. Click Assist to programmatically set the implementation.

    For example, if you want to copy input values from the request to the response and then set the state to STARTED, you can use the Code Assist view to do the copying and then use the static view to set the state.

11. To copy the input to output:

    1. In the Response section, click Setter and then click Getter.
    2. Cut the getter string and paste it into the setter string by replacing the question mark (?). To separate statements with a new line, press Enter.

       

    3. To save the implementation and return to the previous view, click Finish.

    4. In the static section, enter the STARTED state, as shown in the following figure:

       

    5. Save the emulator and click Finish. The condition displays in the Rules table, as shown in the following figure:

       

12. Complete one of the following steps to activate, deactivate, or define the component emulators:
    • If you want to activate all of the defined component emulators, click the Start icon

      .

    • If you want to deactivate all of the component emulators, click the Stop icon

      .

    • If you want to import component emulators, click the Import icon

      .

    • If you want to export component emulators, click the Export icon

      .

Results

When emulated, the conditions are evaluated in order and the first condition that evaluates to true runs.

If no conditions evaluate to true, then a default response is generated and returned. In a default response, the fields are all set to default values.

If : When you import emulators, all of the existing emulators will be overwritten. If an emulator is defined for any operation of a component, then all of the operations for that component will be emulated.

Testing with the Component Test Explorer