diff --git a/smoke-tests/build.gradle b/smoke-tests/build.gradle
index 44eea77f58f..087c2b0d055 100644
--- a/smoke-tests/build.gradle
+++ b/smoke-tests/build.gradle
@@ -65,6 +65,7 @@ android {
           "src/combined/java",
 	  "src/database/java",
 	  "src/firestore/java",
+	  "src/functions/java",
 	  "src/storage/java",
       ]
     }
@@ -97,6 +98,7 @@ dependencies {
   combinedImplementation "com.google.firebase:firebase-auth"
   combinedImplementation "com.google.firebase:firebase-database"
   combinedImplementation "com.google.firebase:firebase-firestore"
+  combinedImplementation "com.google.firebase:firebase-functions"
   combinedImplementation "com.google.firebase:firebase-storage"
 
   // Database
diff --git a/smoke-tests/src/combined/java/com/google/firebase/testing/combined/AllTests.java b/smoke-tests/src/combined/java/com/google/firebase/testing/combined/AllTests.java
index e4a4291a552..99ced1081ff 100644
--- a/smoke-tests/src/combined/java/com/google/firebase/testing/combined/AllTests.java
+++ b/smoke-tests/src/combined/java/com/google/firebase/testing/combined/AllTests.java
@@ -16,6 +16,7 @@
 
 import com.google.firebase.testing.database.DatabaseTest;
 import com.google.firebase.testing.firestore.FirestoreTest;
+import com.google.firebase.testing.functions.FunctionsTest;
 import com.google.firebase.testing.storage.StorageTest;
 import org.junit.runner.RunWith;
 import org.junit.runners.Suite;
@@ -24,5 +25,5 @@
  * A test suite combining the individual product flavors.
  */
 @RunWith(Suite.class)
-@Suite.SuiteClasses({DatabaseTest.class, FirestoreTest.class, StorageTest.class})
+@Suite.SuiteClasses({DatabaseTest.class, FirestoreTest.class, FunctionsTest.class, StorageTest.class})
 public final class AllTests {}
diff --git a/smoke-tests/src/functions/java/com/google/firebase/testing/functions/FunctionsTest.java b/smoke-tests/src/functions/java/com/google/firebase/testing/functions/FunctionsTest.java
new file mode 100644
index 00000000000..13feff7af38
--- /dev/null
+++ b/smoke-tests/src/functions/java/com/google/firebase/testing/functions/FunctionsTest.java
@@ -0,0 +1,59 @@
+// Copyright 2018 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.testing.functions;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.app.Activity;
+import androidx.test.rule.ActivityTestRule;
+import androidx.test.runner.AndroidJUnit4;
+import com.google.android.gms.tasks.Task;
+import com.google.firebase.functions.FirebaseFunctions;
+import com.google.firebase.functions.FirebaseFunctionsException;
+import com.google.firebase.functions.HttpsCallableResult;
+import com.google.firebase.testing.common.Tasks2;
+import java.util.HashMap;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+/** Functions smoke tests. */
+@RunWith(AndroidJUnit4.class)
+public final class FunctionsTest {
+
+  @Rule public final ActivityTestRule<Activity> activity = new ActivityTestRule<>(Activity.class);
+
+  @Test
+  public void callFakeFunctionShouldFail() throws Exception {
+    FirebaseFunctions functions = FirebaseFunctions.getInstance();
+    Task<HttpsCallableResult> task = functions.getHttpsCallable("clearlyFake31").call();
+    Tasks2.waitForFailure(task);
+  }
+
+  @Test
+  @SuppressWarnings("unchecked")
+  public void callAddNumbersShouldReturnResult() throws Exception {
+    FirebaseFunctions functions = FirebaseFunctions.getInstance();
+    HashMap<String, Object> data = new HashMap<>();
+    data.put("firstNumber", 13);
+    data.put("secondNumber", 17);
+
+    Task<HttpsCallableResult> task = functions.getHttpsCallable("addNumbers").call(data);
+    HttpsCallableResult result = Tasks2.waitForSuccess(task);
+    HashMap<String, Object> map = (HashMap<String, Object>) result.getData();
+
+    assertThat(map.get("operationResult")).isEqualTo(30);
+  }
+}