Add support for GCP_EU and AU regions in Config and Stack classes

Author: reeshika-h

src/main/java/com/contentstack/sdk/Config.java

@@ -211,7 +211,7 @@ public Config setManagementToken(@NotNull String managementToken) {
      * The enum Contentstack region. for now contentstack supports [US, EU, AZURE_NA]
      */
     public enum ContentstackRegion {
-        US, EU, AZURE_NA, AZURE_EU, GCP_NA
+        US, EU, AZURE_NA, AZURE_EU, GCP_NA, GCP_EU, AU
     }
 
 }

src/main/java/com/contentstack/sdk/Stack.java

@@ -73,6 +73,16 @@ protected void setConfig(Config config) {
                     urlDomain = "cdn.contentstack.com";
                 }
                 config.host = "gcp-na" + "-" + urlDomain;
+            } else if (region.equalsIgnoreCase("gcp_eu")) {
+                if (urlDomain.equalsIgnoreCase("cdn.contentstack.io")) {
+                    urlDomain = "cdn.contentstack.com";
+                }
+                config.host = "gcp-eu" + "-" + urlDomain;
+            } else if (region.equalsIgnoreCase("au")) {
+                if (urlDomain.equalsIgnoreCase("cdn.contentstack.io")) {
+                    urlDomain = "cdn.contentstack.com";
+                }
+                config.host = region + "-" + urlDomain;
             }
         }
 

src/test/java/com/contentstack/sdk/TestGcpRegion.java

@@ -33,4 +33,15 @@ void testGcpNARegionBehaviourGcpStackHost() throws IllegalAccessException {
         Assertions.assertEquals("gcp-na-cdn.contentstack.com", stack.config.host);
 
     }
+
+    @Test
+    void testGcpEURegionBehaviourGcpStack() throws IllegalAccessException {
+        Config config = new Config();
+        Config.ContentstackRegion region = Config.ContentstackRegion.GCP_EU;
+        config.setRegion(region);
+        Stack stack = Contentstack.stack("fakeApiKey", "fakeDeliveryToken", "fakeEnvironment", config);
+        Assertions.assertFalse(config.region.name().isEmpty());
+        Assertions.assertEquals("GCP_EU", stack.config.region.name());
+        Assertions.assertEquals("gcp-eu-cdn.contentstack.com", stack.config.host);
+    }
 }

src/test/java/com/contentstack/sdk/TestStack.java

@@ -400,4 +400,26 @@ public void onCompletion(ResponseType responseType, Error error) {
         });
     }
 
+    @Test
+    @Order(44)
+    void testAURegionSupport() throws IllegalAccessException {
+        Config config = new Config();
+        Config.ContentstackRegion region = Config.ContentstackRegion.AU;
+        config.setRegion(region);
+        Assertions.assertFalse(config.region.name().isEmpty());
+        Assertions.assertEquals("AU", config.region.name());
+    }
+
+    @Test
+    @Order(45)
+    void testAURegionBehaviourStackHost() throws IllegalAccessException {
+        Config config = new Config();
+        Config.ContentstackRegion region = Config.ContentstackRegion.AU;
+        config.setRegion(region);
+        Stack stack = Contentstack.stack("fakeApiKey", "fakeDeliveryToken", "fakeEnvironment", config);
+        Assertions.assertFalse(config.region.name().isEmpty());
+        Assertions.assertEquals("au-cdn.contentstack.com", stack.config.host);
+
+    }
+
 }