Merge pull request #50429 from igormukhin

* rabbitmq-empty-ssl-bundle:
  Treat empty RabbitMQ SSL bundle as unset

Closes gh-50429

Author: snicoll

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/RabbitProperties.java

@@ -474,7 +474,7 @@ public Boolean getEnabled() {
 		 * @see #getEnabled() ()
 		 */
 		public boolean determineEnabled() {
-			boolean defaultEnabled = Boolean.TRUE.equals(getEnabled()) || this.bundle != null;
+			boolean defaultEnabled = Boolean.TRUE.equals(getEnabled()) || StringUtils.hasText(this.bundle);
 			if (CollectionUtils.isEmpty(RabbitProperties.this.parsedAddresses)) {
 				return defaultEnabled;
 			}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/amqp/RabbitPropertiesTests.java

@@ -335,6 +335,12 @@ void determineSslEnabledIsTrueWhenBundleIsSetAndNoAddresses() {
 		assertThat(this.properties.getSsl().determineEnabled()).isTrue();
 	}
 
+	@Test
+	void determineSslEnabledIsFalseWhenBundleIsEmpty() {
+		this.properties.getSsl().setBundle("");
+		assertThat(this.properties.getSsl().determineEnabled()).isFalse();
+	}
+
 	@Test
 	void propertiesUseConsistentDefaultValues() {
 		ConnectionFactory connectionFactory = new ConnectionFactory();