Bring old Travis script over as a local_test.sh script

.cirrus.yml

@@ -39,7 +39,8 @@ task:
       depends_on:
         - format+analyze
     - name: test
-      script: ./script/tool_runner.sh test
+      # Exclude flutter_image; its tests need a test server, so are run via local_tests.sh
+      script: ./script/tool_runner.sh test --exclude=flutter_image
       depends_on:
         - format+analyze
     - name: build-apks+java-test

packages/flutter_image/run_tests.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+# Copyright 2013 The Flutter Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Fast fail the script on failures.
+set -e
+# Print commands to stdout
+set -x
+
+flutter packages get
+flutter analyze lib/ test/
+
+dart test/network_test_server.dart &
+SERVER_PID=$!
+sleep 2
+
+flutter test
+kill $SERVER_PID