Use regex comparison in WebSocket stats test

The output includes thread pool information which appears to not vary
enough to cause failures locally but does so on the build server.

spring-websocket/src/test/java/org/springframework/web/socket/config/MessageBrokerBeanDefinitionParserTests.java

@@ -257,14 +257,16 @@ public class MessageBrokerBeanDefinitionParserTests {
 
 		String name = "webSocketMessageBrokerStats";
 		WebSocketMessageBrokerStats stats = this.appContext.getBean(name, WebSocketMessageBrokerStats.class);
-		assertEquals("WebSocketSession[0 current WS(0)-HttpStream(0)-HttpPoll(0), " +
-				"0 total, 0 closed abnormally (0 connect failure, 0 send limit, 0 transport error)], " +
-				"stompSubProtocol[processed CONNECT(0)-CONNECTED(0)-DISCONNECT(0)], " +
-				"stompBrokerRelay[0 sessions, relayhost:1234 (not available), processed CONNECT(0)-CONNECTED(0)-DISCONNECT(0)], " +
-				"inboundChannel[pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 0], " +
-				"outboundChannelpool size = 0, active threads = 0, queued tasks = 0, completed tasks = 0], " +
-				"sockJsScheduler[pool size = 1, active threads = 0, queued tasks = 1, completed tasks = 0]",
-				stats.toString());
+		String actual = stats.toString();
+		String expected = "WebSocketSession\\[0 current WS\\(0\\)-HttpStream\\(0\\)-HttpPoll\\(0\\), " +
+				"0 total, 0 closed abnormally \\(0 connect failure, 0 send limit, 0 transport error\\)\\], " +
+				"stompSubProtocol\\[processed CONNECT\\(0\\)-CONNECTED\\(0\\)-DISCONNECT\\(0\\)\\], " +
+				"stompBrokerRelay\\[0 sessions, relayhost:1234 \\(not available\\), processed CONNECT\\(0\\)-CONNECTED\\(0\\)-DISCONNECT\\(0\\)\\], " +
+				"inboundChannel\\[pool size = \\d, active threads = \\d, queued tasks = \\d, completed tasks = \\d\\], " +
+				"outboundChannelpool size = \\d, active threads = \\d, queued tasks = \\d, completed tasks = \\d\\], " +
+				"sockJsScheduler\\[pool size = \\d, active threads = \\d, queued tasks = \\d, completed tasks = \\d\\]";
+
+		assertTrue("\nExpected: " + expected.replace("\\", "") + "\n  Actual: " + actual, actual.matches(expected));
 	}
 
 	@Test

spring-websocket/src/test/java/org/springframework/web/socket/config/annotation/WebSocketMessageBrokerConfigurationSupportTests.java

@@ -22,6 +22,10 @@ import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.ScheduledThreadPoolExecutor;
 
+import org.hamcrest.Description;
+import org.hamcrest.Matcher;
+import org.hamcrest.Matchers;
+import org.hamcrest.TypeSafeMatcher;
 import org.junit.Before;
 import org.junit.Test;
 
@@ -138,14 +142,16 @@ public class WebSocketMessageBrokerConfigurationSupportTests {
 	public void webSocketMessageBrokerStats() {
 		String name = "webSocketMessageBrokerStats";
 		WebSocketMessageBrokerStats stats = this.config.getBean(name, WebSocketMessageBrokerStats.class);
-		assertEquals("WebSocketSession[0 current WS(0)-HttpStream(0)-HttpPoll(0), " +
-						"0 total, 0 closed abnormally (0 connect failure, 0 send limit, 0 transport error)], " +
-						"stompSubProtocol[processed CONNECT(0)-CONNECTED(0)-DISCONNECT(0)], " +
-						"stompBrokerRelay[null], " +
-						"inboundChannel[pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 0], " +
-						"outboundChannelpool size = 0, active threads = 0, queued tasks = 0, completed tasks = 0], " +
-						"sockJsScheduler[pool size = 1, active threads = 0, queued tasks = 1, completed tasks = 0]",
-				stats.toString());
+		String actual = stats.toString();
+		String expected = "WebSocketSession\\[0 current WS\\(0\\)-HttpStream\\(0\\)-HttpPoll\\(0\\), " +
+				"0 total, 0 closed abnormally \\(0 connect failure, 0 send limit, 0 transport error\\)\\], " +
+				"stompSubProtocol\\[processed CONNECT\\(0\\)-CONNECTED\\(0\\)-DISCONNECT\\(0\\)\\], " +
+				"stompBrokerRelay\\[null\\], " +
+				"inboundChannel\\[pool size = \\d, active threads = \\d, queued tasks = \\d, completed tasks = \\d\\], " +
+				"outboundChannelpool size = \\d, active threads = \\d, queued tasks = \\d, completed tasks = \\d\\], " +
+				"sockJsScheduler\\[pool size = \\d, active threads = \\d, queued tasks = \\d, completed tasks = \\d\\]";
+
+		assertTrue("\nExpected: " + expected.replace("\\", "") + "\n  Actual: " + actual, actual.matches(expected));
 	}