Added a new unit test for getDeploymentMode() in the EnvConfigs.java (#13010)

Author: Cheryl0402

airbyte-config/models/src/test/java/io/airbyte/config/EnvConfigsTest.java

@@ -177,6 +177,21 @@ void testTrackingStrategy() {
     assertEquals(Configs.TrackingStrategy.LOGGING, config.getTrackingStrategy());
   }
 
+  @Test
+  void testDeploymentMode() {
+    envMap.put(EnvConfigs.DEPLOYMENT_MODE, null);
+    assertEquals(Configs.DeploymentMode.OSS, config.getDeploymentMode());
+
+    envMap.put(EnvConfigs.DEPLOYMENT_MODE, "CLOUD");
+    assertEquals(Configs.DeploymentMode.CLOUD, config.getDeploymentMode());
+
+    envMap.put(EnvConfigs.DEPLOYMENT_MODE, "oss");
+    assertEquals(Configs.DeploymentMode.OSS, config.getDeploymentMode());
+
+    envMap.put(EnvConfigs.DEPLOYMENT_MODE, "OSS");
+    assertEquals(Configs.DeploymentMode.OSS, config.getDeploymentMode());
+  }
+
   @Test
   void testworkerKubeTolerations() {
     final String airbyteServer = "airbyte-server";