Automatic Revert (Part 3): Add supporting test files for the automati…

…c revert feature (#3085)

Add supporting fake classes for testing and a new field for the autosubmit query result.

*List which issues are fixed by this PR. You must list at least one issue.*
Part of flutter/flutter#113867

*If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].*

auto_submit/lib/model/auto_submit_query_result.dart

@@ -146,6 +146,7 @@ class PullRequest {
     this.reviews,
     this.commits,
     this.mergeable,
+    this.number,
   });
   final Author? author;
   @JsonKey(name: 'authorAssociation')
@@ -155,6 +156,7 @@ class PullRequest {
   final String? body;
   final Reviews? reviews;
   final Commits? commits;
+  final int? number;
   // https://docs.github.com/en/graphql/reference/enums#mergeablestate
   final MergeableState? mergeable;
 

auto_submit/test/src/validations/fake_approval.dart

@@ -0,0 +1,24 @@
+// Copyright 2023 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.
+
+import 'package:auto_submit/model/auto_submit_query_result.dart';
+
+import 'package:auto_submit/validations/approval.dart';
+import 'package:auto_submit/validations/validation.dart';
+import 'package:github/github.dart' as github;
+
+class FakeApproval extends Approval {
+  FakeApproval({required super.config});
+
+  ValidationResult? validationResult;
+
+  @override
+  String get name => 'FakeApproval';
+
+  /// Implements the code review approval logic.
+  @override
+  Future<ValidationResult> validate(QueryResult result, github.PullRequest messagePullRequest) async {
+    return validationResult ?? ValidationResult(true, Action.REMOVE_LABEL, '');
+  }
+}

auto_submit/test/src/validations/fake_mergeable.dart

@@ -0,0 +1,22 @@
+// Copyright 2023 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.
+
+import 'package:auto_submit/model/auto_submit_query_result.dart';
+import 'package:auto_submit/validations/mergeable.dart';
+import 'package:auto_submit/validations/validation.dart';
+import 'package:github/github.dart' as github;
+
+class FakeMergeable extends Mergeable {
+  FakeMergeable({required super.config});
+
+  ValidationResult? validationResult;
+
+  @override
+  String get name => 'FakeMergeable';
+
+  @override
+  Future<ValidationResult> validate(QueryResult result, github.PullRequest messagePullRequest) async {
+    return validationResult ?? ValidationResult(true, Action.REMOVE_LABEL, '');
+  }
+}

auto_submit/test/src/validations/fake_required_check_runs.dart

@@ -0,0 +1,23 @@
+// Copyright 2023 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.
+
+import 'package:auto_submit/validations/required_check_runs.dart';
+import 'package:auto_submit/model/auto_submit_query_result.dart' as auto;
+
+import 'package:auto_submit/validations/validation.dart';
+import 'package:github/github.dart' as github;
+
+class FakeRequiredCheckRuns extends RequiredCheckRuns {
+  FakeRequiredCheckRuns({required super.config});
+
+  ValidationResult? validationResult;
+
+  @override
+  String get name => 'FakeRequiredCheckRuns';
+
+  @override
+  Future<ValidationResult> validate(auto.QueryResult result, github.PullRequest messagePullRequest) async {
+    return validationResult ?? ValidationResult(true, Action.REMOVE_LABEL, '');
+  }
+}

auto_submit/test/src/validations/fake_validation_filter.dart

@@ -0,0 +1,19 @@
+// Copyright 2023 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.
+
+import 'package:auto_submit/validations/validation.dart';
+import 'package:auto_submit/validations/validation_filter.dart';
+
+class FakeValidationFilter implements ValidationFilter {
+  final Set<Validation> validations = {};
+
+  void registerValidation(Validation newValidation) {
+    validations.add(newValidation);
+  }
+
+  @override
+  Set<Validation> getValidations() {
+    return validations;
+  }
+}