add clone script and instructions

Author: tanzimfh

README.md

@@ -63,6 +63,11 @@ Unit tests can be executed on the command line by running
 ./gradlew :<firebase-project>:check
 ```
 
+#### Vertex AI for Firebase
+
+See the Vertex AI for Firebase [README](firebase-vertexai#running-tests) for setup
+instructions specific to that project.
+
 ### Integration Testing
 
 These are tests that run on a hardware device or emulator. These tests have

firebase-vertexai/README.md

@@ -15,6 +15,10 @@ All Gradle commands should be run from the root of this repository.
 
 ## Running Tests
 
+> [!IMPORTANT]
+> These unit tests require mock response files, which can be downloaded by running
+`./firebase-vertexai/update_responses.sh` from the root of this repository.
+
 Unit tests:
 
 `./gradlew :firebase-vertexai:check`

firebase-vertexai/src/test/resources/README.md

@@ -0,0 +1,2 @@
+Mock response files should be cloned into this directory to run unit tests. See
+the Vertex AI for Firebase [README](../../..#running-tests) for instructions.

firebase-vertexai/update_responses.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# Copyright 2024 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.
+
+# This script replaces mock response files for Vertex AI unit tests with a fresh
+# clone of the shared repository of Vertex AI test data.
+
+cd "$(dirname "$0")/src/test/resources" || exit
+rm -rf vertexai-sdk-test-data
+git clone --depth 1 https://github.com/FirebaseExtended/vertexai-sdk-test-data.git