Provide nested cause when a suitable CacheManager cannot be found

Closes gh-25250

spring-context/src/test/java/org/springframework/cache/config/EnableCachingTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -19,6 +19,8 @@ package org.springframework.cache.config;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.beans.factory.BeanCreationException;
+import org.springframework.beans.factory.NoSuchBeanDefinitionException;
+import org.springframework.beans.factory.NoUniqueBeanDefinitionException;
 import org.springframework.cache.CacheManager;
 import org.springframework.cache.annotation.CachingConfigurerSupport;
 import org.springframework.cache.annotation.EnableCaching;
@@ -87,6 +89,7 @@ public class EnableCachingTests extends AbstractCacheAnnotationTests {
 		}
 		catch (IllegalStateException ex) {
 			assertThat(ex.getMessage().contains("no unique bean of type CacheManager")).isTrue();
+			assertThat(ex).hasCauseInstanceOf(NoUniqueBeanDefinitionException.class);
 		}
 	}
 
@@ -121,6 +124,7 @@ public class EnableCachingTests extends AbstractCacheAnnotationTests {
 		}
 		catch (IllegalStateException ex) {
 			assertThat(ex.getMessage().contains("no bean of type CacheManager")).isTrue();
+			assertThat(ex).hasCauseInstanceOf(NoSuchBeanDefinitionException.class);
 		}
 	}