Refactor docker compose so default launches everything

spring-cloud-sleuth-samples/spring-cloud-sleuth-sample-zipkin-stream/src/test/java/example/ZipkinServerApplicationTests.java

@@ -0,0 +1,31 @@
+package example;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.IntegrationTest;
+import org.springframework.boot.test.SpringApplicationConfiguration;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+import example.ZipkinStreamServerApplication;
+import io.zipkin.SpanStore;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringApplicationConfiguration(classes = ZipkinStreamServerApplication.class)
+@IntegrationTest({ "server.port=0", "spring.datasource.initialize=true" })
+@ActiveProfiles("test")
+public class ZipkinServerApplicationTests {
+
+	@Autowired
+	private SpanStore store;
+
+	@Test
+	public void contextLoads() {
+		int count = this.store.getServiceNames().size();
+		assertEquals(0, count);
+	}
+
+}