Polish TomcatReactiveWebServerFactoryTests

See gh-17336

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/tomcat/TomcatReactiveWebServerFactoryTests.java

@@ -40,7 +40,6 @@ import org.mockito.InOrder;
 import org.springframework.boot.web.reactive.server.AbstractReactiveWebServerFactory;
 import org.springframework.boot.web.reactive.server.AbstractReactiveWebServerFactoryTests;
 import org.springframework.boot.web.server.PortInUseException;
-import org.springframework.boot.web.servlet.server.AbstractServletWebServerFactoryTests;
 import org.springframework.http.server.reactive.HttpHandler;
 import org.springframework.util.SocketUtils;
 
@@ -217,7 +216,7 @@ class TomcatReactiveWebServerFactoryTests extends AbstractReactiveWebServerFacto
 	}
 
 	@Test
-	protected void portClashOfPrimaryConnectorResultsInPortInUseException() throws IOException {
+	void portClashOfPrimaryConnectorResultsInPortInUseException() throws IOException {
 		doWithBlockedPort((port) -> {
 			assertThatExceptionOfType(RuntimeException.class).isThrownBy(() -> {
 				AbstractReactiveWebServerFactory factory = getFactory();
@@ -228,8 +227,7 @@ class TomcatReactiveWebServerFactoryTests extends AbstractReactiveWebServerFacto
 		});
 	}
 
-	protected final void doWithBlockedPort(AbstractServletWebServerFactoryTests.BlockedPortAction action)
-			throws IOException {
+	private void doWithBlockedPort(BlockedPortAction action) throws IOException {
 		int port = SocketUtils.findAvailableTcpPort(40000);
 		ServerSocket serverSocket = new ServerSocket();
 		for (int i = 0; i < 10; i++) {
@@ -248,9 +246,15 @@ class TomcatReactiveWebServerFactoryTests extends AbstractReactiveWebServerFacto
 		}
 	}
 
-	protected void handleExceptionCausedByBlockedPortOnPrimaryConnector(RuntimeException ex, int blockedPort) {
+	private void handleExceptionCausedByBlockedPortOnPrimaryConnector(RuntimeException ex, int blockedPort) {
 		assertThat(ex).isInstanceOf(PortInUseException.class);
 		assertThat(((PortInUseException) ex).getPort()).isEqualTo(blockedPort);
 	}
 
+	public interface BlockedPortAction {
+
+		void run(int port);
+
+	}
+
 }