Add simple SSO sample with github authentication

spring-boot-samples/spring-boot-sample-secure-sso/src/test/java/sample/secure/sso/SampleOAuth2SsoApplicationTests.java

@@ -0,0 +1,54 @@
+package sample.secure.sso;
+
+import static org.hamcrest.CoreMatchers.containsString;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.header;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+import static org.springframework.test.web.servlet.setup.MockMvcBuilders.webAppContextSetup;
+
+import org.junit.Before;
+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.security.core.context.SecurityContextHolder;
+import org.springframework.security.web.FilterChainProxy;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.web.context.WebApplicationContext;
+
+/**
+ * Series of automated integration tests to verify proper behavior of auto-configured,
+ * OAuth2-secured system
+ *
+ * @author Greg Turnquist
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@WebAppConfiguration
+@SpringApplicationConfiguration(SampleOAuth2SsoApplication.class)
+@IntegrationTest("server.port:0")
+public class SampleOAuth2SsoApplicationTests {
+
+	@Autowired
+	WebApplicationContext context;
+
+	@Autowired
+	FilterChainProxy filterChain;
+
+	private MockMvc mvc;
+
+	@Before
+	public void setUp() {
+		this.mvc = webAppContextSetup(this.context).addFilters(this.filterChain).build();
+		SecurityContextHolder.clearContext();
+	}
+
+	@Test
+	public void everythingIsSecuredByDefault() throws Exception {
+		this.mvc.perform(get("/")).andExpect(status().isFound())
+				.andExpect(header().string("location", containsString("github.com")));
+	}
+
+}