Added Spring unit tests for #122.

Author: sapessi

aws-serverless-java-container-spring/src/test/java/com/amazonaws/serverless/proxy/spring/SpringAwsProxyTest.java

@@ -28,6 +28,9 @@
 import javax.ws.rs.core.HttpHeaders;
 import javax.ws.rs.core.MediaType;
 import java.io.IOException;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+import java.time.temporal.ChronoUnit;
 import java.util.UUID;
 
 import static org.junit.Assert.*;
@@ -112,6 +115,36 @@ public void queryString_uriInfo_echo() {
         validateMapResponseModel(output);
     }
 
+    @Test
+    public void dateHeader_notModified_expect304() {
+        AwsProxyRequest request = new AwsProxyRequestBuilder("/echo/last-modified", "GET")
+                                          .json()
+                                          .header(
+                                                  HttpHeaders.IF_MODIFIED_SINCE,
+                                                  DateTimeFormatter.RFC_1123_DATE_TIME.format(ZonedDateTime.now().minus(1, ChronoUnit.SECONDS))
+                                          )
+                                          .build();
+
+        AwsProxyResponse output = handler.proxy(request, lambdaContext);
+        assertEquals(304, output.getStatusCode());
+        assertEquals("", output.getBody());
+    }
+
+    @Test
+    public void dateHeader_notModified_expect200() {
+        AwsProxyRequest request = new AwsProxyRequestBuilder("/echo/last-modified", "GET")
+                                          .json()
+                                          .header(
+                                                  HttpHeaders.IF_MODIFIED_SINCE,
+                                                  DateTimeFormatter.RFC_1123_DATE_TIME.format(ZonedDateTime.now().minus(5, ChronoUnit.DAYS))
+                                          )
+                                          .build();
+
+        AwsProxyResponse output = handler.proxy(request, lambdaContext);
+        assertEquals(200, output.getStatusCode());
+        assertEquals(EchoResource.STRING_BODY, output.getBody());
+    }
+
     @Test
     public void authorizer_securityContext_customPrincipalSuccess() {
         AwsProxyRequest request = new AwsProxyRequestBuilder("/echo/authorizer-principal", "GET")

aws-serverless-java-container-spring/src/test/java/com/amazonaws/serverless/proxy/spring/echoapp/EchoResource.java

@@ -14,6 +14,8 @@
 import javax.servlet.http.HttpServletRequest;
 
 import java.net.URI;
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
 import java.util.Enumeration;
 import java.util.Map;
 import java.util.Optional;
@@ -28,6 +30,7 @@
 @RequestMapping("/echo")
 public class EchoResource {
     public static final String TEST_GENERATE_URI = "test";
+    public static final String STRING_BODY = "Hello";
 
     @Autowired
     ServletContext servletContext;
@@ -149,4 +152,11 @@ public SingleValueModel echoGeneratedResourceLink() {
         return valueModel;
     }
 
+    @RequestMapping(path = "/last-modified", method = RequestMethod.GET)
+    public ResponseEntity<String> echoLastModified() {
+        return ResponseEntity
+                       .ok()
+                       .lastModified(Instant.now().minus(1, ChronoUnit.DAYS).toEpochMilli())
+                       .body(STRING_BODY);
+    }
 }