add unit tests for appchecktokenresponse

Author: yvonnep165

src/test/java/com/google/firebase/appcheck/VerifyAppCheckTokenResponseTest.java

@@ -0,0 +1,86 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.firebase.appcheck;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertThrows;
+import static org.junit.Assert.assertTrue;
+
+import com.google.common.collect.ImmutableMap;
+import org.junit.Test;
+
+public class VerifyAppCheckTokenResponseTest {
+
+  private static final String APP_ID = "test-app-id";
+  private static final DecodedAppCheckToken DECODED_TOKEN =
+      new DecodedAppCheckToken(ImmutableMap.<String, Object>of("sub", APP_ID));
+
+  @Test
+  public void testNullAppId_ThrowsException() {
+    NullPointerException e =
+        assertThrows(
+            NullPointerException.class,
+            () -> new VerifyAppCheckTokenResponse(null, DECODED_TOKEN, null));
+    assertTrue(e.getMessage().contains("appId must not be null"));
+  }
+
+  @Test
+  public void testNullToken_ThrowsException() {
+    NullPointerException e =
+        assertThrows(
+            NullPointerException.class,
+            () -> new VerifyAppCheckTokenResponse(APP_ID, null, null));
+    assertTrue(e.getMessage().contains("token must not be null"));
+  }
+
+  @Test
+  public void testGetters_WithoutAlreadyConsumed() {
+    VerifyAppCheckTokenResponse response =
+        new VerifyAppCheckTokenResponse(APP_ID, DECODED_TOKEN, null);
+
+    assertNotNull(response);
+    assertEquals(APP_ID, response.getAppId());
+    assertEquals(DECODED_TOKEN, response.getToken());
+    assertFalse(response.isAlreadyConsumed().isPresent());
+  }
+
+  @Test
+  public void testGetters_WithAlreadyConsumedTrue() {
+    VerifyAppCheckTokenResponse response =
+        new VerifyAppCheckTokenResponse(APP_ID, DECODED_TOKEN, true);
+
+    assertNotNull(response);
+    assertEquals(APP_ID, response.getAppId());
+    assertEquals(DECODED_TOKEN, response.getToken());
+    assertTrue(response.isAlreadyConsumed().isPresent());
+    assertTrue(response.isAlreadyConsumed().get());
+  }
+
+  @Test
+  public void testGetters_WithAlreadyConsumedFalse() {
+    VerifyAppCheckTokenResponse response =
+        new VerifyAppCheckTokenResponse(APP_ID, DECODED_TOKEN, false);
+
+    assertNotNull(response);
+    assertEquals(APP_ID, response.getAppId());
+    assertEquals(DECODED_TOKEN, response.getToken());
+    assertTrue(response.isAlreadyConsumed().isPresent());
+    assertFalse(response.isAlreadyConsumed().get());
+  }
+}