How to use

getContextCustomizers

method

in

org.springframework.test.context.MergedContextConfiguration

/**
 * Customize the {@link ConfigurableApplicationContext} created by this
 * {@code ContextLoader} <em>after</em> bean definitions have been loaded
 * into the context but <em>before</em> the context has been refreshed.
 * <p>The default implementation delegates to all
 * {@link MergedContextConfiguration#getContextCustomizers context customizers}
 * that have been registered with the supplied {@code mergedConfig}.
 * @param context the newly created application context
 * @param mergedConfig the merged context configuration
 * @since 4.3
 */
protected void customizeContext(ConfigurableApplicationContext context, MergedContextConfiguration mergedConfig) {
  for (ContextCustomizer contextCustomizer : mergedConfig.getContextCustomizers()) {
    contextCustomizer.customizeContext(context, mergedConfig);
  }
}

if (!mergedConfig.getContextInitializerClasses().isEmpty() || !mergedConfig.getContextCustomizers().isEmpty()) {
  return delegateLoading(getAnnotationConfigLoader(), mergedConfig);

/**
 * Customize the {@link ConfigurableApplicationContext} created by this
 * {@code ContextLoader} <em>after</em> bean definitions have been loaded
 * into the context but <em>before</em> the context has been refreshed.
 * <p>The default implementation delegates to all
 * {@link MergedContextConfiguration#getContextCustomizers context customizers}
 * that have been registered with the supplied {@code mergedConfig}.
 * @param context the newly created application context
 * @param mergedConfig the merged context configuration
 * @since 4.3
 */
protected void customizeContext(ConfigurableApplicationContext context, MergedContextConfiguration mergedConfig) {
  for (ContextCustomizer contextCustomizer : mergedConfig.getContextCustomizers()) {
    contextCustomizer.customizeContext(context, mergedConfig);
  }
}

/**
 * Customize the {@link ConfigurableApplicationContext} created by this
 * {@code ContextLoader} <em>after</em> bean definitions have been loaded
 * into the context but <em>before</em> the context has been refreshed.
 * <p>The default implementation delegates to all
 * {@link MergedContextConfiguration#getContextCustomizers context customizers}
 * that have been registered with the supplied {@code mergedConfig}.
 * @param context the newly created application context
 * @param mergedConfig the merged context configuration
 * @since 4.3
 */
protected void customizeContext(ConfigurableApplicationContext context, MergedContextConfiguration mergedConfig) {
  for (ContextCustomizer contextCustomizer : mergedConfig.getContextCustomizers()) {
    contextCustomizer.customizeContext(context, mergedConfig);
  }
}

/**
 * Return the {@link ApplicationContextInitializer initializers} that will be applied
 * to the context. By default this method will adapt {@link ContextCustomizer context
 * customizers}, add {@link SpringApplication#getInitializers() application
 * initializers} and add
 * {@link MergedContextConfiguration#getContextInitializerClasses() initializers
 * specified on the test}.
 * @param config the source context configuration
 * @param application the application instance
 * @return the initializers to apply
 * @since 2.0.0
 */
protected List<ApplicationContextInitializer<?>> getInitializers(
    MergedContextConfiguration config, SpringApplication application) {
  List<ApplicationContextInitializer<?>> initializers = new ArrayList<>();
  for (ContextCustomizer contextCustomizer : config.getContextCustomizers()) {
    initializers.add(new ContextCustomizerAdapter(contextCustomizer, config));
  }
  initializers.addAll(application.getInitializers());
  for (Class<? extends ApplicationContextInitializer<?>> initializerClass : config
      .getContextInitializerClasses()) {
    initializers.add(BeanUtils.instantiateClass(initializerClass));
  }
  if (config.getParent() != null) {
    initializers.add(new ParentContextApplicationContextInitializer(
        config.getParentApplicationContext()));
  }
  return initializers;
}

if (!mergedConfig.getContextInitializerClasses().isEmpty() || !mergedConfig.getContextCustomizers().isEmpty()) {
  return delegateLoading(getAnnotationConfigLoader(), mergedConfig);

if (!mergedConfig.getContextInitializerClasses().isEmpty() || !mergedConfig.getContextCustomizers().isEmpty()) {
  return delegateLoading(getAnnotationConfigLoader(), mergedConfig);

/**
 * Create a new {@link MergedContextConfiguration} with different classes and
 * properties.
 * @param mergedConfig the source config
 * @param classes the replacement classes
 * @param propertySourceProperties the replacement properties
 * @return a new {@link MergedContextConfiguration}
 */
protected final MergedContextConfiguration createModifiedConfig(
    MergedContextConfiguration mergedConfig, Class<?>[] classes,
    String[] propertySourceProperties) {
  return new MergedContextConfiguration(mergedConfig.getTestClass(),
      mergedConfig.getLocations(), classes,
      mergedConfig.getContextInitializerClasses(),
      mergedConfig.getActiveProfiles(),
      mergedConfig.getPropertySourceLocations(), propertySourceProperties,
      mergedConfig.getContextCustomizers(), mergedConfig.getContextLoader(),
      getCacheAwareContextLoaderDelegate(), mergedConfig.getParent());
}