[red] cover official repository branch chooser

Signed-off-by: Viwat Vchirawongkwin <viwat.v@chula.ac.th>

Author: yyods

app/test/golden/github_import_golden_test.dart

@@ -68,11 +68,13 @@ const GithubEntry _notesEntry = GithubEntry(
 
 final class _GoldenGithubApi implements GithubApi {
   _GoldenGithubApi({
+    this.branchFailure,
     this.resolveFailure,
     this.childListGate,
     this.entries = _defaultEntries,
   });
 
+  final GithubFailure? branchFailure;
   final GithubFailure? resolveFailure;
   final Completer<void>? childListGate;
   final List<GithubEntry> entries;
@@ -91,6 +93,22 @@ final class _GoldenGithubApi implements GithubApi {
     'gamma.py': Uint8List.fromList(utf8.encode("print('gamma')\n")),
   };
 
+  @override
+  Future<GithubBranchCatalog> listBranches(
+    RepositoryLocator locator, {
+    GithubCancellation? cancellation,
+  }) async {
+    if (branchFailure case final GithubFailure failure) throw failure;
+    if (cancellation?.isCancelled ?? false) {
+      throw const GithubFailure(GithubFailureKind.cancelled);
+    }
+    return GithubBranchCatalog(
+      locator: locator,
+      defaultBranch: 'main',
+      branches: const <String>['main', 'release/v1'],
+    );
+  }
+
   @override
   Future<PinnedRepository> resolve(
     RepositoryLocator locator, {
@@ -233,10 +251,14 @@ Future<void> _openImporter(WidgetTester tester) async {
 }
 
 Future<void> _browseRepository(WidgetTester tester) async {
-  await tester.enterText(
-    find.byKey(kGithubRepositoryFieldKey),
-    'https://github.com/PyBLE-dev/examples',
+  expect(
+    tester
+        .widget<TextField>(find.byKey(kGithubRepositoryFieldKey))
+        .controller
+        ?.text,
+    kOfficialExamplesRepositoryUrl,
   );
+  expect(find.byKey(kGithubBranchDropdownKey), findsOneWidget);
   await tester.tap(find.byKey(kGithubBrowseButtonKey));
   await tester.pumpAndSettle();
 }
@@ -258,6 +280,44 @@ Future<void> _expectGolden(WidgetTester tester, String name) => expectLater(
 
 void main() {
   group('A-33 GitHub import adaptive goldens', () {
+    testWidgets(
+      'wide dialog starts with the editable official repository and default branch',
+      (WidgetTester tester) async {
+        final RecordingConnection connection = RecordingConnection(
+          initial: ConnState.ready,
+        );
+        final _GoldenGithubApi api = _GoldenGithubApi();
+        addTearDown(connection.dispose);
+
+        await _pumpGoldenHost(
+          tester,
+          connection: connection,
+          api: api,
+          size: const Size(1024, 768),
+        );
+        await _openImporter(tester);
+
+        final TextField repositoryField = tester.widget<TextField>(
+          find.byKey(kGithubRepositoryFieldKey),
+        );
+        expect(
+          repositoryField.controller?.text,
+          kOfficialExamplesRepositoryUrl,
+        );
+        expect(repositoryField.enabled, isNot(false));
+        expect(find.byKey(kGithubBranchDropdownKey), findsOneWidget);
+        await tester.tap(find.byKey(kGithubBranchDropdownKey));
+        await tester.pumpAndSettle();
+        expect(find.textContaining('main'), findsWidgets);
+        expect(find.text('release/v1'), findsOneWidget);
+        expect(connection.putFileCalls, isEmpty);
+        expect(connection.runFileCalls, isEmpty);
+        expect(connection.runSourceCalls, isEmpty);
+        await _expectGolden(tester, 'github_import_wide_branch_chooser');
+      },
+      tags: const <String>['golden'],
+    );
+
     testWidgets(
       'wide dialog retains context while a child folder loads',
       (WidgetTester tester) async {
@@ -394,7 +454,7 @@ void main() {
           initial: ConnState.ready,
         );
         final _GoldenGithubApi api = _GoldenGithubApi(
-          resolveFailure: const GithubFailure(
+          branchFailure: const GithubFailure(
             GithubFailureKind.rateLimited,
             rateLimitRemaining: 0,
             retryAfter: Duration(seconds: 120),
@@ -411,12 +471,7 @@ void main() {
           highContrast: true,
         );
         await _openImporter(tester);
-        await tester.enterText(
-          find.byKey(kGithubRepositoryFieldKey),
-          'https://github.com/PyBLE-dev/examples',
-        );
         tester.view.viewInsets = const FakeViewPadding(bottom: 440);
-        await tester.tap(find.byKey(kGithubBrowseButtonKey));
         await tester.pumpAndSettle();
 
         expect(find.byType(BottomSheet), findsOneWidget);
@@ -493,7 +548,7 @@ void main() {
           find.byKey(kGithubRepositoryFieldKey),
           'https://github.com/PyBLE-dev/PyBLE/tree/main',
         );
-        await tester.tap(find.byKey(kGithubBrowseButtonKey));
+        await tester.tap(find.byKey(kGithubLoadBranchesButtonKey));
         await tester.pumpAndSettle();
 
         expect(find.byType(BottomSheet), findsOneWidget);

app/test/integration/github_import_integration_test.dart

@@ -117,18 +117,21 @@ final class _RestBlobFixture {
   final String mode;
 }
 
-http.Response _jsonResponse(Map<String, Object?> body) => http.Response(
+http.Response _jsonResponse(Object? body) => http.Response(
   jsonEncode(body),
   200,
   headers: const <String, String>{'content-type': 'application/json'},
 );
 
-void _expectUnauthenticatedApiRequest(http.Request request) {
+void _expectUnauthenticatedApiRequest(
+  http.Request request, {
+  Map<String, String> queryParameters = const <String, String>{},
+}) {
   expect(request.method, 'GET');
   expect(request.url.scheme, 'https');
   expect(request.url.host, 'api.github.com');
   expect(request.url.hasPort, isFalse);
-  expect(request.url.query, isEmpty);
+  expect(request.url.queryParameters, queryParameters);
   expect(request.followRedirects, isFalse);
   expect(request.maxRedirects, 0);
   expect(request.headers['Accept'], 'application/vnd.github+json');
@@ -271,11 +274,32 @@ void main() {
       int refreshCount = 0;
 
       final MockClient httpClient = MockClient((http.Request request) async {
-        _expectUnauthenticatedApiRequest(request);
         final String path = request.url.path;
+        _expectUnauthenticatedApiRequest(
+          request,
+          queryParameters:
+              path == '/repos/PyBLE-dev/integration-fixture/branches'
+              ? const <String, String>{'per_page': '100', 'page': '1'}
+              : const <String, String>{},
+        );
         requestedPaths.add(path);
         operations.add('http:$path');
 
+        if (path == '/repos/PyBLE-dev/integration-fixture') {
+          return _jsonResponse(<String, Object?>{'default_branch': 'moving'});
+        }
+        if (path == '/repos/PyBLE-dev/integration-fixture/branches') {
+          return _jsonResponse(<Object?>[
+            <String, Object?>{
+              'name': 'release/v1',
+              'commit': <String, Object?>{'sha': _commitSha},
+            },
+            <String, Object?>{
+              'name': 'moving',
+              'commit': <String, Object?>{'sha': _commitSha},
+            },
+          ]);
+        }
         if (path == '/repos/PyBLE-dev/integration-fixture/commits/moving') {
           movingRefResolutions += 1;
           return _jsonResponse(<String, Object?>{
@@ -366,9 +390,14 @@ void main() {
         final RepositoryLocator locator = RepositoryLocator.parse(
           'https://github.com/PyBLE-dev/integration-fixture',
         );
+        final GithubBranchCatalog catalog = await api.listBranches(locator);
+        expect(catalog.locator, same(locator));
+        expect(catalog.defaultBranch, 'moving');
+        expect(catalog.branches, <String>['moving', 'release/v1']);
+
         final PinnedRepository repository = await api.resolve(
           locator,
-          ref: 'moving',
+          ref: catalog.defaultBranch,
         );
         expect(repository.requestedRef, 'moving');
         expect(repository.resolvedRef, 'moving');
@@ -434,6 +463,8 @@ void main() {
         expect(result.failure, isNull);
         expect(movingRefResolutions, 1);
         expect(requestedPaths, <String>[
+          '/repos/PyBLE-dev/integration-fixture',
+          '/repos/PyBLE-dev/integration-fixture/branches',
           '/repos/PyBLE-dev/integration-fixture/commits/moving',
           '/repos/PyBLE-dev/integration-fixture/git/trees/$_rootTreeSha',
           '/repos/PyBLE-dev/integration-fixture/git/trees/'