chore(Test): Adding SSL tests for Java

see #4

.travis.yml

@@ -11,3 +11,4 @@ install:
 
 script:
   - ./bin/build.sh
+  - ./bin/test.sh

bin/test-utils/SSLPoke.java

@@ -0,0 +1,35 @@
+import javax.net.ssl.SSLSocket;
+import javax.net.ssl.SSLSocketFactory;
+import java.io.*;
+
+/** Establish a SSL connection to a host and port, writes a byte and
+ * prints the response. See
+ * http://confluence.atlassian.com/display/JIRA/Connecting+to+SSL+services
+ */
+public class SSLPoke {
+    public static void main(String[] args) {
+		if (args.length != 2) {
+			System.out.println("Usage: "+SSLPoke.class.getName()+" <host> <port>");
+			System.exit(1);
+		}
+		try {
+			SSLSocketFactory sslsocketfactory = (SSLSocketFactory) SSLSocketFactory.getDefault();
+			SSLSocket sslsocket = (SSLSocket) sslsocketfactory.createSocket(args[0], Integer.parseInt(args[1]));
+
+			InputStream in = sslsocket.getInputStream();
+			OutputStream out = sslsocket.getOutputStream();
+
+			// Write a test byte to get a reaction :)
+			out.write(1);
+
+			while (in.available() > 0) {
+				System.out.print(in.read());
+			}
+			System.out.println("Successfully connected");
+
+		} catch (Exception exception) {
+			exception.printStackTrace();
+      System.exit(1);
+		}
+	}
+}

bin/test.sh

@@ -1,4 +1,28 @@
 #!/bin/sh
 
-# FIXME: Run tests ;)
-./bin/build.sh
+CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+function prepareTestImage {
+  docker run -td --name "test-$1" "toolisticon/$1"
+}
+
+function removeTestImage {
+  docker stop "test-$1"
+  docker rm "test-$1"
+}
+
+function runJavaImageTests {
+  removeTestImage $1 2>/dev/null || true
+  prepareTestImage "$1"
+  docker cp "$CURRENT_DIR/test-utils/SSLPoke.java" "test-$1":/tmp/
+  docker exec "test-$1" bash -c "cd /tmp && javac SSLPoke.java"
+  docker exec "test-$1" bash -c "cd /tmp && java SSLPoke google.de 443"
+  removeTestImage $1
+}
+
+# TODO more test
+
+runJavaImageTests 'openjdk8-builder'
+runJavaImageTests 'openjdk11-builder'
+runJavaImageTests 'oraclejdk12-builder'
+runJavaImageTests 'oraclejdk13-builder'