From 5e448f4ce57723ac0792ae822ebac69df3188ba1 Mon Sep 17 00:00:00 2001
From: Greg Price <greg@zulip.com>
Date: Mon, 3 Jun 2024 12:44:39 -0700
Subject: [PATCH] Support failures-only and silent reporters in `flutter test`
 (#148739)

Fixes #148738.

Also add some tests for this part of the `flutter test` CLI.
---
 .../flutter_tools/lib/src/commands/test.dart  |  6 +-
 .../commands.shard/hermetic/test_test.dart    | 57 +++++++++++++++++++
 2 files changed, 61 insertions(+), 2 deletions(-)

diff --git a/packages/flutter_tools/lib/src/commands/test.dart b/packages/flutter_tools/lib/src/commands/test.dart
index ba505dfa5e10..cc95de420f71 100644
--- a/packages/flutter_tools/lib/src/commands/test.dart
+++ b/packages/flutter_tools/lib/src/commands/test.dart
@@ -216,12 +216,14 @@ class TestCommand extends FlutterCommand with DeviceBasedDevelopmentArtifacts {
       ..addOption('reporter',
         abbr: 'r',
         help: 'Set how to print test results. If unset, value will default to either compact or expanded.',
-        allowed: <String>['compact', 'expanded', 'github', 'json'],
+        allowed: <String>['compact', 'expanded', 'failures-only', 'github', 'json', 'silent'],
         allowedHelp: <String, String>{
-          'compact':  'A single line that updates dynamically (The default reporter).',
+          'compact':  'A single line, updated continuously (the default).',
           'expanded': 'A separate line for each update. May be preferred when logging to a file or in continuous integration.',
+          'failures-only': 'A separate line for failing tests, with no output for passing tests.',
           'github':   'A custom reporter for GitHub Actions (the default reporter when running on GitHub Actions).',
           'json':     'A machine-readable format. See: https://dart.dev/go/test-docs/json_reporter.md',
+          'silent':   'A reporter with no output. May be useful when only the exit code is meaningful.'
         },
       )
       ..addOption('file-reporter',
diff --git a/packages/flutter_tools/test/commands.shard/hermetic/test_test.dart b/packages/flutter_tools/test/commands.shard/hermetic/test_test.dart
index 7ddef36ef623..d3d955d98ed6 100644
--- a/packages/flutter_tools/test/commands.shard/hermetic/test_test.dart
+++ b/packages/flutter_tools/test/commands.shard/hermetic/test_test.dart
@@ -283,6 +283,63 @@ dev_dependencies:
     });
   });
 
+  group('--reporter/-r', () {
+    String? passedReporter(List<String> args) {
+      final int i = args.indexOf('-r');
+      if (i < 0) {
+        expect(args, isNot(contains('--reporter')));
+        expect(args, isNot(contains(matches(RegExp(r'^(-r|--reporter=)')))));
+        return null;
+      } else {
+        return args[i+1];
+      }
+    }
+
+    Future<void> expectPassesReporter(String value) async {
+      final FakePackageTest fakePackageTest = FakePackageTest();
+      final TestCommand testCommand = TestCommand(testWrapper: fakePackageTest);
+      final CommandRunner<void> commandRunner = createTestCommandRunner(testCommand);
+
+      await commandRunner.run(<String>['test', '--no-pub', '-r', value]);
+      expect(passedReporter(fakePackageTest.lastArgs!), equals(value));
+
+      await commandRunner.run(<String>['test', '--no-pub', '-r$value']);
+      expect(passedReporter(fakePackageTest.lastArgs!), equals(value));
+
+      await commandRunner.run(<String>['test', '--no-pub', '--reporter', value]);
+      expect(passedReporter(fakePackageTest.lastArgs!), equals(value));
+
+      await commandRunner.run(<String>['test', '--no-pub', '--reporter=$value']);
+      expect(passedReporter(fakePackageTest.lastArgs!), equals(value));
+    }
+
+    testUsingContext('accepts valid values and passes them through', () async {
+      await expectPassesReporter('compact');
+      await expectPassesReporter('expanded');
+      await expectPassesReporter('failures-only');
+      await expectPassesReporter('github');
+      await expectPassesReporter('json');
+      await expectPassesReporter('silent');
+    }, overrides: <Type, Generator>{
+      FileSystem: () => fs,
+      ProcessManager: () => FakeProcessManager.any(),
+      Cache: () => Cache.test(processManager: FakeProcessManager.any()),
+    });
+
+    testUsingContext('by default, passes no reporter', () async {
+      final FakePackageTest fakePackageTest = FakePackageTest();
+      final TestCommand testCommand = TestCommand(testWrapper: fakePackageTest);
+      final CommandRunner<void> commandRunner = createTestCommandRunner(testCommand);
+
+      await commandRunner.run(<String>['test', '--no-pub']);
+      expect(passedReporter(fakePackageTest.lastArgs!), isNull);
+    }, overrides: <Type, Generator>{
+      FileSystem: () => fs,
+      ProcessManager: () => FakeProcessManager.any(),
+      Cache: () => Cache.test(processManager: FakeProcessManager.any()),
+    });
+  });
+
   testUsingContext('Supports coverage and machine', () async {
     final FakePackageTest fakePackageTest = FakePackageTest();