diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 5ae56f7..44cefe6 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -19,7 +19,7 @@ jobs:
 
     - uses: actions/setup-python@v5
       with:
-        python-version: '3.10'
+        python-version: '3.11'
 
     - name: Cache Mint packages
       uses: actions/cache@v4
@@ -32,11 +32,7 @@ jobs:
       run: ./setup-scripts.sh
 
     - name: Setup check
-      run: |
-        brew update
-        brew install clang-format@19
-        brew install mint
-        mint bootstrap
+      run: scripts/setup_check.sh
 
     - name: Style
       run: scripts/style.sh test-only
diff --git a/.github/workflows/spm.yml b/.github/workflows/spm.yml
index 34acac4..6177753 100644
--- a/.github/workflows/spm.yml
+++ b/.github/workflows/spm.yml
@@ -30,7 +30,6 @@ jobs:
     env:
       FIREBASECI_USE_LATEST_GOOGLEAPPMEASUREMENT: 1
       FIREBASE_MAIN: 1
-      DISABLE_INTEGRATION_TESTS: 1
     steps:
       - uses: actions/checkout@v4
       - name: Generate Swift Package.resolved
@@ -54,15 +53,14 @@ jobs:
 
     strategy:
       matrix:
-        os: [macos-14]
+        os: [macos-15]
         # GitHub actions' runners do not include visionOS. https://github.com/actions/runner-images/issues/10559
-        target: [iOS, tvOS, macOS, catalyst]
-        xcode: [Xcode_15.2, Xcode_15.4, Xcode_16]
+        target: [iOS, macOS, tvOS, catalyst]
+        xcode: [Xcode_16.2]
     runs-on: ${{ matrix.os }}
     env:
       FIREBASECI_USE_LATEST_GOOGLEAPPMEASUREMENT: 1
       FIREBASE_MAIN: 1
-      DISABLE_INTEGRATION_TESTS: 1
     steps:
     - uses: actions/checkout@v4
     - uses: actions/cache/restore@v4
@@ -73,5 +71,9 @@ jobs:
       run: sudo xcode-select -s /Applications/${{ matrix.xcode }}.app/Contents/Developer
     - name: Setup Scripts Directory
       run: ./setup-scripts.sh
-    - name: Unit Tests
-      run: scripts/third_party/travis/retry.sh scripts/build.sh FirebaseDataConnect ${{ matrix.target }} spm
+    - name: Install iOS Platform
+      run: xcodebuild -downloadPlatform iOS
+    - name: Integration Test Setup
+      run: Tests/Integration/Emulator/start-emulator.sh
+    - name: Unit and Integration Tests
+      run: scripts/third_party/travis/retry.sh ./scripts/build.sh FirebaseDataConnect ${{ matrix.target }} spm
diff --git a/Tests/Integration/Emulator/start-emulator.sh b/Tests/Integration/Emulator/start-emulator.sh
new file mode 100755
index 0000000..ab10f79
--- /dev/null
+++ b/Tests/Integration/Emulator/start-emulator.sh
@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Sets up Firebase Data Connect emulator to execute
+# integration tests.
+
+set -e
+
+# Get the absolute path to the directory containing this script.
+SCRIPT_DIR="$(cd $(dirname ${BASH_SOURCE[0]}) && pwd)"
+TEMP_DIR="$(mktemp -d -t firebase-data-connect)"
+echo "Starting Firebase Data Connect emulator in ${TEMP_DIR}"
+cd "${TEMP_DIR}"
+
+EMULATOR_VERSION="1.8.3"
+EMULATOR_FILENAME="dataconnect-emulator-macos-v${EMULATOR_VERSION}"
+EMULATOR_URL="https://storage.googleapis.com/firemat-preview-drop/emulator/${EMULATOR_FILENAME}"
+echo "Downloading emulator from ${EMULATOR_URL}"
+
+curl -o "${EMULATOR_FILENAME}" "${EMULATOR_URL}"
+
+chmod 755 "${EMULATOR_FILENAME}"
+
+./${EMULATOR_FILENAME} --logtostderr  dev --listen="127.0.0.1:3628" &
diff --git a/Tests/Integration/IntegrationTestBase.swift b/Tests/Integration/IntegrationTestBase.swift
index ca2faed..ff18989 100644
--- a/Tests/Integration/IntegrationTestBase.swift
+++ b/Tests/Integration/IntegrationTestBase.swift
@@ -37,8 +37,10 @@ class IntegrationTestBase: XCTestCase {
   )
 
   override class func setUp() {
-    FirebaseApp.configure(options: options)
-    defaultApp = FirebaseApp.app()
+    if defaultApp == nil {
+      FirebaseApp.configure(options: options)
+      defaultApp = FirebaseApp.app()
+    }
     DataConnect.kitchenSinkConnector.useEmulator(port: 3628)
   }
 }
diff --git a/Tests/Unit/InstanceTests.swift b/Tests/Unit/InstanceTests.swift
index 2ebf1dd..b49db12 100644
--- a/Tests/Unit/InstanceTests.swift
+++ b/Tests/Unit/InstanceTests.swift
@@ -19,8 +19,15 @@ import XCTest
 
 @available(iOS 15.0, macOS 12.0, tvOS 15.0, watchOS 8.0, *)
 class InstanceTests: XCTestCase {
-  static var defaultApp: FirebaseApp?
-  static var appTwo: FirebaseApp?
+  static var defaultApp: FirebaseApp? = {
+    FirebaseApp.configure(options: options)
+    return FirebaseApp.app()
+  }()
+
+  static var appTwo: FirebaseApp? = {
+    FirebaseApp.configure(name: "app-two", options: optionsTwo)
+    return FirebaseApp.app(name: "app-two")
+  }()
 
   static var options: FirebaseOptions = {
     let options = FirebaseOptions(googleAppID: "0:0000000000000:ios:0000000000000000",
@@ -51,14 +58,6 @@ class InstanceTests: XCTestCase {
     connector: "blogs"
   )
 
-  override class func setUp() {
-    FirebaseApp.configure(options: options)
-    defaultApp = FirebaseApp.app()
-
-    FirebaseApp.configure(name: "app-two", options: optionsTwo)
-    appTwo = FirebaseApp.app(name: "app-two")
-  }
-
   // same connector config, same app, instance returned should be same
   func testSameInstance() throws {
     let dcOne = DataConnect.dataConnect(connectorConfig: fakeConnectorConfigOne)