[ci/tools] Add iOS/macOS analysis to catch deprecated code

.cirrus.yml

@@ -334,6 +334,11 @@ task:
         - ./script/tool_runner.sh build-examples --ios
       xcode_analyze_script:
         - ./script/tool_runner.sh xcode-analyze --ios
+      xcode_analyze_deprecation_script:
+        # Ensure we don't accidentally introduce deprecated code.
+        # TODO(stuartmorgan): Update this to a newer version of iOS to get
+        # ahead of upcoming deprecations.
+        - ./script/tool_runner.sh xcode-analyze --ios --ios-min-version=11.0
       native_test_script:
         - ./script/tool_runner.sh native-test --ios --ios-destination "platform=iOS Simulator,name=iPhone 11,OS=latest"
       drive_script:
@@ -362,6 +367,9 @@ task:
         - ./script/tool_runner.sh build-examples --macos
       xcode_analyze_script:
         - ./script/tool_runner.sh xcode-analyze --macos
+      xcode_analyze_deprecation_script:
+        # Ensure we don't accidentally introduce deprecated code.
+        - ./script/tool_runner.sh xcode-analyze --macos --macos-min-version=12.3
       native_test_script:
         - ./script/tool_runner.sh native-test --macos
       drive_script:

packages/google_sign_in/google_sign_in_ios/example/ios/Podfile

@@ -25,6 +25,9 @@ end
 
 require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
 
+# Suppress warnings from transitive dependencies that cause analysis to fail.
+pod 'AppAuth', :inhibit_warnings => true
+
 flutter_ios_podfile_setup
 
 target 'Runner' do

script/tool/CHANGELOG.md

@@ -2,6 +2,9 @@
 
 - Fixes changelog validation when reverting to a `NEXT` state.
 - Fixes multiplication of `--force` flag when publishing multiple packages.
+- Adds minimum deployment target flags to `xcode-analyze` to allow
+  enforcing deprecation warning handling in advance of actually dropping
+  support for an OS version.
 - Checks for template boilerplate in `readme-check`.
 - `readme-check` now validates example READMEs when present.
 

script/tool/lib/src/xcode_analyze_command.dart

@@ -23,8 +23,20 @@ class XcodeAnalyzeCommand extends PackageLoopingCommand {
         super(packagesDir, processRunner: processRunner, platform: platform) {
     argParser.addFlag(platformIOS, help: 'Analyze iOS');
     argParser.addFlag(platformMacOS, help: 'Analyze macOS');
+    argParser.addOption(_minIOSVersionArg,
+        help: 'Sets the minimum iOS deployment version to use when compiling, '
+            'overriding the default minimum version. This can be used to find '
+            'deprecation warnings that will affect the plugin in the future.');
+    argParser.addOption(_minMacOSVersionArg,
+        help:
+            'Sets the minimum macOS deployment version to use when compiling, '
+            'overriding the default minimum version. This can be used to find '
+            'deprecation warnings that will affect the plugin in the future.');
   }
 
+  static const String _minIOSVersionArg = 'ios-min-version';
+  static const String _minMacOSVersionArg = 'macos-min-version';
+
   final Xcode _xcode;
 
   @override
@@ -57,15 +69,24 @@ class XcodeAnalyzeCommand extends PackageLoopingCommand {
       return PackageResult.skip('Not implemented for target platform(s).');
     }
 
+    final String minIOSVersion = getStringArg(_minIOSVersionArg);
+    final String minMacOSVersion = getStringArg(_minMacOSVersionArg);
+
     final List<String> failures = <String>[];
     if (testIOS &&
         !await _analyzePlugin(package, 'iOS', extraFlags: <String>[
           '-destination',
-          'generic/platform=iOS Simulator'
+          'generic/platform=iOS Simulator',
+          if (minIOSVersion.isNotEmpty)
+            'IPHONEOS_DEPLOYMENT_TARGET=$minIOSVersion',
         ])) {
       failures.add('iOS');
     }
-    if (testMacOS && !await _analyzePlugin(package, 'macOS')) {
+    if (testMacOS &&
+        !await _analyzePlugin(package, 'macOS', extraFlags: <String>[
+          if (minMacOSVersion.isNotEmpty)
+            'MACOSX_DEPLOYMENT_TARGET=$minMacOSVersion',
+        ])) {
       failures.add('macOS');
     }
 

script/tool/test/xcode_analyze_command_test.dart

@@ -123,6 +123,47 @@ void main() {
             ]));
       });
 
+      test('passes min iOS deployment version when requested', () async {
+        final RepositoryPackage plugin = createFakePlugin('plugin', packagesDir,
+            platformSupport: <String, PlatformDetails>{
+              platformIOS: const PlatformDetails(PlatformSupport.inline)
+            });
+
+        final Directory pluginExampleDirectory = getExampleDir(plugin);
+
+        final List<String> output = await runCapturingPrint(runner,
+            <String>['xcode-analyze', '--ios', '--ios-min-version=14.0']);
+
+        expect(
+            output,
+            containsAllInOrder(<Matcher>[
+              contains('Running for plugin'),
+              contains('plugin/example (iOS) passed analysis.')
+            ]));
+
+        expect(
+            processRunner.recordedCalls,
+            orderedEquals(<ProcessCall>[
+              ProcessCall(
+                  'xcrun',
+                  const <String>[
+                    'xcodebuild',
+                    'analyze',
+                    '-workspace',
+                    'ios/Runner.xcworkspace',
+                    '-scheme',
+                    'Runner',
+                    '-configuration',
+                    'Debug',
+                    '-destination',
+                    'generic/platform=iOS Simulator',
+                    'IPHONEOS_DEPLOYMENT_TARGET=14.0',
+                    'GCC_TREAT_WARNINGS_AS_ERRORS=YES',
+                  ],
+                  pluginExampleDirectory.path),
+            ]));
+      });
+
       test('fails if xcrun fails', () async {
         createFakePlugin('plugin', packagesDir,
             platformSupport: <String, PlatformDetails>{
@@ -218,6 +259,41 @@ void main() {
             ]));
       });
 
+      test('passes min macOS deployment version when requested', () async {
+        final RepositoryPackage plugin = createFakePlugin('plugin', packagesDir,
+            platformSupport: <String, PlatformDetails>{
+              platformMacOS: const PlatformDetails(PlatformSupport.inline),
+            });
+
+        final Directory pluginExampleDirectory = getExampleDir(plugin);
+
+        final List<String> output = await runCapturingPrint(runner,
+            <String>['xcode-analyze', '--macos', '--macos-min-version=12.0']);
+
+        expect(output,
+            contains(contains('plugin/example (macOS) passed analysis.')));
+
+        expect(
+            processRunner.recordedCalls,
+            orderedEquals(<ProcessCall>[
+              ProcessCall(
+                  'xcrun',
+                  const <String>[
+                    'xcodebuild',
+                    'analyze',
+                    '-workspace',
+                    'macos/Runner.xcworkspace',
+                    '-scheme',
+                    'Runner',
+                    '-configuration',
+                    'Debug',
+                    'MACOSX_DEPLOYMENT_TARGET=12.0',
+                    'GCC_TREAT_WARNINGS_AS_ERRORS=YES',
+                  ],
+                  pluginExampleDirectory.path),
+            ]));
+      });
+
       test('fails if xcrun fails', () async {
         createFakePlugin('plugin', packagesDir,
             platformSupport: <String, PlatformDetails>{