---
schema_version: "1"
id: bc68dea31712cd51a470df4594fb7e3b9178b7b49d32d9adb6e383f1ac1a8000
title: Test WaveTemplateConfigurationModifier
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locale: en-us
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canonical_url: https://developer.salesforce.com/docs/analytics/bi-dev-guide-wave-templates/guide/bi-templatesdev-apex-class-testing-examples.html
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content_type: documentation
content_hash: 3d40844bdf4e04b554110260f88b3447f1f2fc4244f215361e961ca472461bf3
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  - Analytics Templates Developer Guide
  - analytics
---

# Test WaveTemplateConfigurationModifier

Test the `WaveTemplateConfigurationModifier` before deploying a template that uses it.

Before you can deploy your template or package it for the Salesforce AppExchange that uses a `WaveTemplateConfigurationModifier` class, a unit test class must be present and all of the tests must complete successfully. The unit test is designed to call and run the modifier methods and nothing more. Use the following examples when creating your own unit test class.

Use the `wavetemplate.Test` helper methods for testing.

- `wavetemplate.Test.getWaveTemplateInfoForApexTesting`. Retrieves the runtime template information object for testing. Requires `templateName`:

  ```nolang
  getWaveTemplateInfoForApexTesting(String templateName)
  ```

- `wavetemplate.Test.getDefaultAnswersForApexTesting`. Retrieves the variable answers set by user selections and/or the configuration modifier methods. Requires `templateName`:

  ```nolang
  getDefaultAnswersForApexTesting(String templateName)
  ```

The following code examples show how to test the methods from the [Apex Examples](https://developer.salesforce.com/docs/analytics/bi-dev-guide-wave-templates/guide/bi-templatesdev-apex-class-examples.md) page.

## Example

**Generic Test Class Example**

```nolang
@isTest
private class ExampleWaveTemplateConfigurationModifierTest
{
    @isTest
    static testMethod void testModifier()
    {
        // Test modifier methods
    }
}

```

## Example

**`beforeAppCreate` Test Method Example**

```nolang
 @isTest static testMethod void testBeforeAppCreate()
{
    wavetemplate.WaveTemplateInfo template =
            wavetemplate.Test.getWaveTemplateInfoForApexTesting('my_template');
    wavetemplate.Answers answers =
            wavetemplate.Test.getDefaultAnswersForApexTesting('my_template');

    ExampleWaveTemplateConfigurationModifier mod =
        new ExampleWaveTemplateConfigurationModifier();

    //Test the beforeAppCreate method in your Apex Modifier Class
    System.assertEquals('Yes', answers.get(Has_Product));
    mod.beforeAppCreate(template, answers);
    System.assertEquals('No', answers.get(Has_Product));
}

```

## Example

**`beforeAppUpdate` Test Method Example**

```nolang
 @isTest static testMethod void testBeforeAppUpdate()
{
    wavetemplate.WaveTemplateInfo template =
            wavetemplate.Test.getWaveTemplateInfoForApexTesting('my_template');
    wavetemplate.Answers answers =
            wavetemplate.Test.getDefaultAnswersForApexTesting('my_template');

    ExampleWaveTemplateConfigurationModifier mod =
        new ExampleWaveTemplateConfigurationModifier();

    //Test the beforeAppUpdate method in your Apex Modifier Class
    System.assertEquals('No', answers.get(Has_Product));
    mod.beforeAppUpdate(template, '2.0', answers);
    System.assertEquals('Yes', answers.get(Has_Product));
}

```

## Example

**`onConfigurationRetrieval` Test Method Example**

```nolang
 @isTest static testMethod void testOnConfig()
{
    wavetemplate.WaveTemplateInfo template =
            wavetemplate.Test.getWaveTemplateInfoForApexTesting('my_template');

    ExampleWaveTemplateConfigurationModifier mod =
        new ExampleWaveTemplateConfigurationModifier();

    //Test the onConfigurationRetrieval method in your Apex Modifier Class
    mod.onConfigurationRetrieval(template);
    System.assertEquals('No',
        template.getVariables().get('Has_Product').getComputedValue());
}

```

For complete information, see [Testing Apex](https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_testing.htm).