Added docker compose tests for testcontainers module

testing-modules/test-containers/src/test/java/com/baeldung/testconainers/DockerComposeContainerTests.java

@@ -0,0 +1,42 @@
+package com.baeldung.testconainers;
+
+import static org.junit.Assert.assertEquals;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+import org.junit.ClassRule;
+import org.junit.Test;
+import org.testcontainers.containers.DockerComposeContainer;
+
+public class DockerComposeContainerTests {
+@ClassRule
+public static DockerComposeContainer compose = new DockerComposeContainer(new File("src/test/resources/test-compose.yml"))
+	.withExposedService("simpleWebServer_1", 80);
+    
+    @Test
+    public void when() throws Exception {
+        String address ="http://" + compose.getServiceHost("simpleWebServer_1", 80)+ ":"+ compose.getServicePort("simpleWebServer_1", 80);
+        String response = simpleGetRequest(address);
+        assertEquals(response, "Hello World!");
+    }
+    
+    private String simpleGetRequest(String address) throws Exception {
+        URL url = new URL(address);
+        HttpURLConnection con = (HttpURLConnection) url.openConnection();
+        con.setRequestMethod("GET");
+
+        BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
+        String inputLine;
+        StringBuffer content = new StringBuffer();
+        while ((inputLine = in.readLine()) != null) {
+            content.append(inputLine);
+        }
+        in.close();
+
+        return content.toString();
+    }
+}

testing-modules/test-containers/src/test/resources/test-compose.yml

@@ -0,0 +1,3 @@
+simpleWebServer:
+  image: alpine:3.2
+  command: ["/bin/sh", "-c", "while true; do echo 'HTTP/1.1 200 OK\n\nHello World!' | nc -l -p 80; done"]