diff --git a/test/api_service_mock.dart b/test/api_service_mock.dart
index f017a4f5..e9ee7240 100644
--- a/test/api_service_mock.dart
+++ b/test/api_service_mock.dart
@@ -583,16 +583,28 @@ class AzureApiServiceMock implements AzureApiService {
     required String repoName,
     required String path,
     String? branch,
-  }) {
-    throw UnimplementedError();
+  }) async {
+    final item1 = RepoItem(
+      objectId: 'item 1 ID',
+      commitId: '111111',
+      path: 'item 1',
+      url: '',
+    );
+    final item2 = RepoItem(
+      objectId: 'item 2 ID',
+      commitId: '222222',
+      path: 'item 2',
+      url: '',
+    );
+    return ApiResponse.ok([item1, item2]);
   }
 
   @override
   Future<ApiResponse<List<Branch>>> getRepositoryBranches({
     required String projectName,
     required String repoName,
-  }) {
-    throw UnimplementedError();
+  }) async {
+    return ApiResponse.ok(<Branch>[]);
   }
 
   @override
@@ -603,8 +615,10 @@ class AzureApiServiceMock implements AzureApiService {
     String? branch,
     String? commitId,
     bool previousChange = false,
-  }) {
-    throw UnimplementedError();
+  }) async {
+    return ApiResponse.ok(
+      FileDetailResponse(content: 'body test', isBinary: false),
+    );
   }
 
   @override
diff --git a/test/file_detail_test.dart b/test/file_detail_test.dart
new file mode 100644
index 00000000..e8df457a
--- /dev/null
+++ b/test/file_detail_test.dart
@@ -0,0 +1,35 @@
+import 'package:azure_devops/src/router/router.dart';
+import 'package:azure_devops/src/screens/file_detail/base_file_detail.dart';
+import 'package:azure_devops/src/services/azure_api_service.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'api_service_mock.dart';
+
+/// Mock file is taken from [AzureApiServiceMock.getFileDetail]
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  testWidgets('File detail page showing correcly file content', (t) async {
+    final detailPage = AzureApiServiceInherited(
+      apiService: AzureApiServiceMock(),
+      child: MaterialApp(
+        onGenerateRoute: (_) => MaterialPageRoute(
+          builder: (_) => FileDetailPage(),
+          settings: RouteSettings(
+            arguments: RepoDetailArgs(
+              projectName: 'project name',
+              repositoryName: 'repo name',
+              filePath: 'path',
+              branch: 'branch test',
+            ),
+          ),
+        ),
+      ),
+    );
+
+    await t.pumpWidget(detailPage);
+    await t.pumpAndSettle();
+
+    expect(find.text('body test', findRichText: true), findsOneWidget);
+  });
+}
diff --git a/test/repository_detail_test.dart b/test/repository_detail_test.dart
new file mode 100644
index 00000000..72625de7
--- /dev/null
+++ b/test/repository_detail_test.dart
@@ -0,0 +1,33 @@
+import 'package:azure_devops/src/router/router.dart';
+import 'package:azure_devops/src/screens/repository_detail/base_repository_detail.dart';
+import 'package:azure_devops/src/services/azure_api_service.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'api_service_mock.dart';
+
+/// Mock repository items are taken from [AzureApiServiceMock.getRepositoryItems]
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  testWidgets('Repository detail page showing all items', (t) async {
+    final repoDetailPage = AzureApiServiceInherited(
+      apiService: AzureApiServiceMock(),
+      child: MaterialApp(
+        onGenerateRoute: (_) => MaterialPageRoute(
+          builder: (_) => RepositoryDetailPage(),
+          settings: RouteSettings(
+            arguments: RepoDetailArgs(
+              projectName: '',
+              repositoryName: '',
+            ),
+          ),
+        ),
+      ),
+    );
+
+    await t.pumpWidget(repoDetailPage);
+    await t.pump();
+
+    expect(find.text('item 2', findRichText: true), findsWidgets);
+  });
+}