Start building against Spring Framework 4.3.7 snapshots

See gh-8248

spring-boot-dependencies/pom.xml

@@ -145,7 +145,7 @@
 		<snakeyaml.version>1.17</snakeyaml.version>
 		<solr.version>5.5.3</solr.version>
 		<spock.version>1.0-groovy-2.4</spock.version>
-		<spring.version>4.3.6.RELEASE</spring.version>
+		<spring.version>4.3.7.BUILD-SNAPSHOT</spring.version>
 		<spring-amqp.version>1.6.7.RELEASE</spring-amqp.version>
 		<spring-cloud-connectors.version>1.2.3.RELEASE</spring-cloud-connectors.version>
 		<spring-batch.version>3.0.7.RELEASE</spring-batch.version>

spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/orm/jpa/TestEntityManager.java

 /*
- * Copyright 2012-2016 the original author or authors.
+ * Copyright 2012-2017 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.
@@ -224,7 +224,7 @@ public class TestEntityManager {
 	@SuppressWarnings("unchecked")
 	public <T> T getId(Object entity, Class<T> idType) {
 		Object id = getId(entity);
-		Assert.isInstanceOf(idType, id, "ID mismatch");
+		Assert.isInstanceOf(idType, id, "ID mismatch:");
 		return (T) id;
 	}
 

spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/orm/jpa/TestEntityManagerTests.java

 /*
- * Copyright 2012-2016 the original author or authors.
+ * Copyright 2012-2017 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.
@@ -191,7 +191,7 @@ public class TestEntityManagerTests {
 	public void getIdForTypeWhenTypeIsWrongShouldThrowException() throws Exception {
 		TestEntity entity = new TestEntity();
 		given(this.persistenceUnitUtil.getIdentifier(entity)).willReturn(123);
-		this.thrown.expectMessage("ID mismatch Object of class [java.lang.Integer] "
+		this.thrown.expectMessage("ID mismatch: Object of class [java.lang.Integer] "
 				+ "must be an instance of class java.lang.Long");
 		this.testEntityManager.getId(entity, Long.class);
 	}