Merge branch '1.5.x'

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/liquibase/LiquibaseAutoConfigurationTests.java

 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -31,8 +31,10 @@ import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
 
 import org.springframework.beans.factory.BeanCreationException;
+import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.AutoConfigurations;
 import org.springframework.boot.autoconfigure.jdbc.EmbeddedDataSourceConfiguration;
+import org.springframework.boot.context.event.ApplicationStartingEvent;
 import org.springframework.boot.jdbc.DataSourceBuilder;
 import org.springframework.boot.liquibase.CommonsLoggingLiquibaseLogger;
 import org.springframework.boot.liquibase.LiquibaseServiceLocatorApplicationListener;
@@ -67,7 +69,9 @@ public class LiquibaseAutoConfigurationTests {
 
 	@Before
 	public void init() {
-		new LiquibaseServiceLocatorApplicationListener().onApplicationEvent(null);
+		new LiquibaseServiceLocatorApplicationListener().onApplicationEvent(
+				new ApplicationStartingEvent(new SpringApplication(Object.class),
+						new String[0]));
 	}
 
 	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()