Update minimum required version to Xcode 13 (#97746)

packages/flutter_tools/lib/src/base/user_messages.dart

@@ -147,7 +147,7 @@ class UserMessages {
   String xcodeLocation(String location) => 'Xcode at $location';
 
   String xcodeOutdated(String requiredVersion) =>
-      'Flutter requires a minimum Xcode version of $requiredVersion.\n'
+      'Flutter requires Xcode $requiredVersion or higher.\n'
       'Download the latest version or update via the Mac App Store.';
 
   String xcodeRecommended(String recommendedVersion) =>

packages/flutter_tools/lib/src/macos/xcode.dart

@@ -18,11 +18,11 @@ import '../base/version.dart';
 import '../build_info.dart';
 import '../ios/xcodeproj.dart';
 
-Version get xcodeRequiredVersion => Version(12, 3, null, text: '12.3');
+Version get xcodeRequiredVersion => Version(13, null, null);
 
 /// Diverging this number from the minimum required version will provide a doctor
 /// warning, not error, that users should upgrade Xcode.
-Version get xcodeRecommendedVersion => Version(13, null, null, text: '13');
+Version get xcodeRecommendedVersion => xcodeRequiredVersion;
 
 /// SDK name passed to `xcrun --sdk`. Corresponds to undocumented Xcode
 /// SUPPORTED_PLATFORMS values.

packages/flutter_tools/test/general.shard/macos/xcode_test.dart

@@ -133,85 +133,50 @@ void main() {
           expect(fakeProcessManager.hasRemainingExpectations, isFalse);
         });
 
-        testWithoutContext('xcodeVersionSatisfactory is false when version is less than minimum', () {
+        testWithoutContext('version checks fail when version is less than minimum', () {
           xcodeProjectInterpreter.isInstalled = true;
-          xcodeProjectInterpreter.version = Version(9, 0, 0);
+          xcodeProjectInterpreter.version = Version(9, null, null);
 
           expect(xcode.isRequiredVersionSatisfactory, isFalse);
-        });
-
-        testWithoutContext('xcodeVersionSatisfactory is false when xcodebuild tools are not installed', () {
-          xcodeProjectInterpreter.isInstalled = false;
-
-          expect(xcode.isRequiredVersionSatisfactory, isFalse);
-        });
-
-        testWithoutContext('xcodeVersionSatisfactory is true when version meets minimum', () {
-          xcodeProjectInterpreter.isInstalled = true;
-          xcodeProjectInterpreter.version = Version(12, 3, null);
-
-          expect(xcode.isRequiredVersionSatisfactory, isTrue);
-        });
-
-        testWithoutContext('xcodeVersionSatisfactory is true when major version exceeds minimum', () {
-          xcodeProjectInterpreter.isInstalled = true;
-          xcodeProjectInterpreter.version = Version(13, 0, 0);
-
-          expect(xcode.isRequiredVersionSatisfactory, isTrue);
-        });
-
-        testWithoutContext('xcodeVersionSatisfactory is true when minor version exceeds minimum', () {
-          xcodeProjectInterpreter.isInstalled = true;
-          xcodeProjectInterpreter.version = Version(12, 5, 0);
-
-          expect(xcode.isRequiredVersionSatisfactory, isTrue);
-        });
-
-        testWithoutContext('xcodeVersionSatisfactory is true when patch version exceeds minimum', () {
-          xcodeProjectInterpreter.isInstalled = true;
-          xcodeProjectInterpreter.version = Version(12, 3, 1);
-
-          expect(xcode.isRequiredVersionSatisfactory, isTrue);
-        });
-
-        testWithoutContext('isRecommendedVersionSatisfactory is false when version is less than minimum', () {
-          xcodeProjectInterpreter.isInstalled = true;
-          xcodeProjectInterpreter.version = Version(12, null, null);
-
           expect(xcode.isRecommendedVersionSatisfactory, isFalse);
         });
 
-        testWithoutContext('isRecommendedVersionSatisfactory is false when xcodebuild tools are not installed', () {
+        testWithoutContext('version checks fail when xcodebuild tools are not installed', () {
           xcodeProjectInterpreter.isInstalled = false;
 
+          expect(xcode.isRequiredVersionSatisfactory, isFalse);
           expect(xcode.isRecommendedVersionSatisfactory, isFalse);
         });
 
-        testWithoutContext('isRecommendedVersionSatisfactory is true when version meets minimum', () {
+        testWithoutContext('version checks pass when version meets minimum', () {
           xcodeProjectInterpreter.isInstalled = true;
-          xcodeProjectInterpreter.version = Version(13, 0, 0);
+          xcodeProjectInterpreter.version = Version(13, null, null);
 
+          expect(xcode.isRequiredVersionSatisfactory, isTrue);
           expect(xcode.isRecommendedVersionSatisfactory, isTrue);
         });
 
-        testWithoutContext('isRecommendedVersionSatisfactory is true when major version exceeds minimum', () {
+        testWithoutContext('version checks pass when major version exceeds minimum', () {
           xcodeProjectInterpreter.isInstalled = true;
           xcodeProjectInterpreter.version = Version(14, 0, 0);
 
+          expect(xcode.isRequiredVersionSatisfactory, isTrue);
           expect(xcode.isRecommendedVersionSatisfactory, isTrue);
         });
 
-        testWithoutContext('isRecommendedVersionSatisfactory is true when minor version exceeds minimum', () {
+        testWithoutContext('version checks pass when minor version exceeds minimum', () {
           xcodeProjectInterpreter.isInstalled = true;
           xcodeProjectInterpreter.version = Version(13, 3, 0);
 
+          expect(xcode.isRequiredVersionSatisfactory, isTrue);
           expect(xcode.isRecommendedVersionSatisfactory, isTrue);
         });
 
-        testWithoutContext('isRecommendedVersionSatisfactory is true when patch version exceeds minimum', () {
+        testWithoutContext('version checks pass when patch version exceeds minimum', () {
           xcodeProjectInterpreter.isInstalled = true;
           xcodeProjectInterpreter.version = Version(13, 0, 2);
 
+          expect(xcode.isRequiredVersionSatisfactory, isTrue);
           expect(xcode.isRecommendedVersionSatisfactory, isTrue);
         });
 
@@ -232,7 +197,7 @@ void main() {
 
         testWithoutContext('isInstalledAndMeetsVersionCheck is true when macOS and installed and version is satisfied', () {
           xcodeProjectInterpreter.isInstalled = true;
-          xcodeProjectInterpreter.version = Version(12, 3, null);
+          xcodeProjectInterpreter.version = Version(13, null, null);
 
           expect(xcode.isInstalledAndMeetsVersionCheck, isTrue);
           expect(fakeProcessManager.hasRemainingExpectations, isFalse);

packages/flutter_tools/test/general.shard/macos/xcode_validator_test.dart

@@ -56,7 +56,7 @@ void main() {
       final ValidationResult result = await validator.validate();
       expect(result.type, ValidationType.partial);
       expect(result.messages.last.type, ValidationMessageType.error);
-      expect(result.messages.last.message, contains('Flutter requires a minimum Xcode version of 12.3'));
+      expect(result.messages.last.message, contains('Flutter requires Xcode 13 or higher'));
     });
 
     testWithoutContext('Emits partial status when Xcode below recommended version', () async {
@@ -70,7 +70,7 @@ void main() {
       expect(result.type, ValidationType.partial);
       expect(result.messages.last.type, ValidationMessageType.hint);
       expect(result.messages.last.message, contains('Flutter recommends a minimum Xcode version of 13'));
-    });
+    }, skip: true); // [intended] Unskip and update when minimum and required check versions diverge.
 
     testWithoutContext('Emits partial status when Xcode EULA not signed', () async {
       final ProcessManager processManager = FakeProcessManager.list(<FakeCommand>[

packages/flutter_tools/test/src/context.dart

@@ -294,10 +294,10 @@ class FakeXcodeProjectInterpreter implements XcodeProjectInterpreter {
   bool get isInstalled => true;
 
   @override
-  String get versionText => 'Xcode 12.3';
+  String get versionText => 'Xcode 13';
 
   @override
-  Version get version => Version(12, 3, null);
+  Version get version => Version(13, null, null);
 
   @override
   Future<Map<String, String>> getBuildSettings(