test: improve test coverage (#23)

lib/src/core/location/position.dart

@@ -12,6 +12,7 @@ class Position {
   factory Position.fromJson(Map<String, dynamic> json) {
     final path = Path.from(json['path'] as List);
     final offset = json['offset'];
+
     return Position(
       path: path,
       offset: offset ?? 0,

lib/src/infra/flowy_svg.dart

@@ -3,14 +3,14 @@ import 'package:flutter_svg/svg.dart';
 
 class FlowySvg extends StatelessWidget {
   const FlowySvg({
-    Key? key,
+    super.key,
     this.name,
     this.width,
     this.height,
     this.color,
     this.number,
     this.padding,
-  }) : super(key: key);
+  });
 
   final String? name;
   final double? width;

lib/src/render/action_menu/action_menu_item.dart

@@ -46,14 +46,12 @@ class ActionMenuItem {
     Widget Function(Widget item)? itemWrapper,
   }) {
     return ActionMenuItem(
-      iconBuilder: ({size, color}) {
-        return FlowySvg(
-          name: name,
-          color: color,
-          width: size,
-          height: size,
-        );
-      },
+      iconBuilder: ({color, size}) => FlowySvg(
+        name: name,
+        color: color,
+        width: size,
+        height: size,
+      ),
       onPressed: onPressed,
       selected: selected,
       itemWrapper: itemWrapper,
@@ -62,13 +60,11 @@ class ActionMenuItem {
 
   factory ActionMenuItem.separator() {
     return ActionMenuItem(
-      iconBuilder: ({size, color}) {
-        return FlowySvg(
-          name: 'image_toolbar/divider',
-          color: color,
-          height: size,
-        );
-      },
+      iconBuilder: ({color, size}) => FlowySvg(
+        name: 'image_toolbar/divider',
+        color: color,
+        height: size,
+      ),
       onPressed: null,
     );
   }

lib/src/render/link_menu/link_menu.dart

@@ -130,9 +130,7 @@ class _LinkMenuState extends State<LinkMenu> {
             width: 24,
             height: 24,
           ),
-          onPressed: () {
-            _textEditingController.clear();
-          },
+          onPressed: _textEditingController.clear,
         ),
         border: const OutlineInputBorder(
           borderRadius: BorderRadius.all(Radius.circular(12.0)),

test/core/location/position_test.dart

@@ -1,3 +1,5 @@
+import 'dart:convert';
+
 import 'package:appflowy_editor/appflowy_editor.dart';
 import 'package:flutter_test/flutter_test.dart';
 
@@ -22,5 +24,17 @@ void main() async {
         'offset': 4,
       });
     });
+
+    testWidgets('Position.fromJson', (tester) async {
+      final positionJson = jsonDecode("""{
+        "path": [4],
+        "offset": 5
+      }""");
+
+      final position = Position.fromJson(positionJson);
+
+      expect(position.path.first, 4);
+      expect(position.offset, 5);
+    });
   });
 }

test/core/location/selection_test.dart

@@ -1,3 +1,5 @@
+import 'dart:convert';
+
 import 'package:appflowy_editor/appflowy_editor.dart';
 import 'package:flutter_test/flutter_test.dart';
 
@@ -73,5 +75,26 @@ void main() async {
         }
       });
     });
+
+    testWidgets('Selection.fromJson', (tester) async {
+      final selectionJson = jsonDecode("""{
+        "start": {
+          "path": [0],
+          "offset": 0
+        },
+        "end": {
+          "path": [2],
+          "offset": 25
+        }
+      }""");
+
+      final position = Selection.fromJson(selectionJson);
+
+      expect(position.start.path.first, 0);
+      expect(position.start.offset, 0);
+
+      expect(position.end.path.first, 2);
+      expect(position.end.offset, 25);
+    });
   });
 }

test/core/transform/operation_test.dart

@@ -75,5 +75,9 @@ void main() async {
       expect(op.invert().invert(), op);
       expect(op.copyWith(), op);
     });
+
+    test('Operation.fromJson throws', () {
+      expect(() => Operation.fromJson(), throwsA(isA<UnimplementedError>()));
+    });
   });
 }

test/extensions/node_extension_test.dart

@@ -45,6 +45,48 @@ void main() {
       expect(result, false);
     });
 
+    test('inSelection w/ Reverse selection', () {
+      final linkedList = LinkedList<Node>()
+        ..addAll([
+          Node(
+            type: 'type',
+            attributes: {},
+          ),
+        ]);
+
+      final node = Node(
+        type: 'type',
+        children: linkedList,
+        attributes: {},
+      );
+
+      final reverseSelection = Selection(
+        start: Position(path: [1]),
+        end: Position(path: [0]),
+      );
+
+      final result = node.inSelection(reverseSelection);
+      expect(result, false);
+    });
+
+    testWidgets('isSelected', (tester) async {
+      final editor = tester.editor
+        ..insertTextNode('Hello')
+        ..insertTextNode('World');
+      await editor.startTesting();
+
+      final selection = Selection(
+        start: Position(path: [0]),
+        end: Position(path: [0], offset: 1),
+      );
+
+      await editor.updateSelection(selection);
+
+      final node = editor.editorState.getTextNode(path: [0]);
+
+      expect(node.isSelected(editor.editorState), true);
+    });
+
     testWidgets('insert a new checkbox after an exsiting checkbox',
         (tester) async {
       const text = 'Welcome to Appflowy 😁';

test/extensions/url_launcher_extension_test.dart

@@ -2,7 +2,7 @@ import 'package:appflowy_editor/src/extensions/url_launcher_extension.dart';
 import 'package:flutter_test/flutter_test.dart';
 
 void main() {
-  test('safeLaunchUrl without scheme', () async {
+  test('safeLaunchUrl without href and scheme', () async {
     const href = null;
     final result = await safeLaunchUrl(href);
     expect(result, false);

test/infra/clipboard_test.dart

@@ -0,0 +1,88 @@
+import 'package:appflowy_editor/src/infra/clipboard.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+
+import 'package:flutter_test/flutter_test.dart';
+
+class MockClipboard {
+  final String? text;
+  final String? html;
+
+  const MockClipboard({required this.text, required this.html});
+
+  MockClipboard copyWith({
+    String? text,
+    String? html,
+  }) =>
+      MockClipboard(
+        text: text,
+        html: html,
+      );
+
+  Map<String, String?> get getData => {"html": html, "text": text};
+}
+
+void main() {
+  late MockClipboard mockClipboard;
+
+  setUp(() {
+    mockClipboard = const MockClipboard(html: null, text: null);
+
+    SystemChannels.platform
+        .setMockMethodCallHandler((MethodCall methodCall) async {
+      switch (methodCall.method) {
+        case "Clipboard.getData":
+          return mockClipboard.getData;
+        case "Clipboard.setData":
+          final args = methodCall.arguments as Map<String, dynamic>;
+          mockClipboard = mockClipboard.copyWith(
+            text: args['text'],
+          );
+      }
+    });
+  });
+
+  group('Clipboard tests', () {
+    test('AppFlowyClipboardData constructor', () {
+      const data = AppFlowyClipboardData(text: null, html: null);
+
+      expect(data.text, null);
+      expect(data.html, null);
+    });
+
+    testWidgets('AppFlowyClipboard setData and getData', (tester) async {
+      const rawText = "Hello World";
+
+      AppFlowyClipboardData? clipboardData;
+
+      await tester.pumpWidget(
+        MaterialApp(
+          theme: ThemeData(platform: TargetPlatform.windows),
+          home: Column(
+            children: [
+              TextButton(
+                onPressed: () async =>
+                    await AppFlowyClipboard.setData(text: rawText),
+                child: const Text('setData'),
+              ),
+              TextButton(
+                onPressed: () async =>
+                    clipboardData = await AppFlowyClipboard.getData(),
+                child: const Text('getData'),
+              ),
+            ],
+          ),
+        ),
+      );
+      await tester.pumpAndSettle();
+
+      await tester.tap(find.text('setData'));
+      await tester.pumpAndSettle();
+
+      await tester.tap(find.text('getData'));
+      await tester.pumpAndSettle();
+
+      expect(clipboardData?.text, rawText);
+    });
+  });
+}

test/infra/flowy_svg_test.dart

@@ -0,0 +1,43 @@
+import 'package:appflowy_editor/src/infra/flowy_svg.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_svg/svg.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import '../test_helper.dart';
+
+void main() {
+  group('FlowySvg tests', () {
+    testWidgets('FlowySvg w/ Name', (tester) async {
+      await tester.buildAndPump(
+        const FlowySvg(name: 'checkmark', color: Colors.blue),
+      );
+
+      final svgFinder = find.byType(SvgPicture);
+      expect(svgFinder, findsOneWidget);
+
+      final svgPicture = tester.widget<SvgPicture>(svgFinder);
+      expect(svgPicture.fit, BoxFit.fill);
+      expect(
+        svgPicture.colorFilter,
+        const ColorFilter.mode(Colors.blue, BlendMode.srcIn),
+      );
+    });
+
+    testWidgets('FlowySvg w/ Number', (tester) async {
+      await tester.buildAndPump(
+        const FlowySvg(number: 1),
+      );
+
+      expect(find.byType(SvgPicture), findsOneWidget);
+    });
+
+    testWidgets('FlowySvg null', (tester) async {
+      await tester.buildAndPump(
+        const FlowySvg(),
+      );
+
+      expect(find.byType(Container), findsOneWidget);
+      expect(find.byType(SvgPicture), findsNothing);
+    });
+  });
+}

test/infra/html_converter_test.dart

@@ -0,0 +1,53 @@
+import 'package:appflowy_editor/src/infra/html_converter.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('HTMLConverter tests', () {
+    test('HTMLToNodesConverter', () {
+      final converter = HTMLToNodesConverter(rawHTML);
+      final nodes = converter.toNodes();
+
+      expect(nodes.isNotEmpty, true);
+    });
+  });
+}
+
+const rawHTML = """<h1>AppFlowyEditor</h1>
+<h2>👋 <strong>Welcome to</strong> <strong><em><a href="appflowy.io">AppFlowy Editor</a></em></strong></h2>
+  <p>AppFlowy Editor is a <strong>highly customizable</strong> <em>rich-text editor</em></p>
+
+<p>Here is an example you can give a try</p>
+
+<span style="font-weight: bold;">Span element</span>
+
+<span style="font-weight: medium;">Span element two</span>
+
+<ul>
+  <li>[x] Customizable</li>
+  <li>[x] Test-covered</li>
+  <li>[ ] more to come!</li>
+</ul>
+
+<ol>
+  <li>First item</li>
+  <li>Second item</li>
+</ol>
+
+<li>List element</li>
+
+<blockquote>
+  <p>This is a quote!</p>
+</blockquote>
+
+<pre>
+  <code>
+    Code block
+  </code>
+</pre>
+
+<b>Bold tag</b>
+<img src="http://appflowy.io" alt="AppFlowy">
+<p>You can also use <strong><em>AppFlowy Editor</em></strong> as a component to build your own app.</p>
+<h3>Awesome features</h3>
+<p>If you have questions or feedback, please submit an issue on Github or join the community along with 1000+ builders!</p>
+<hr>""";

test/legacy/undo_manager_test.dart

@@ -52,6 +52,17 @@ void main() async {
     assert(transaction.operations[2] is UpdateOperation);
     assert(isInsertAndPathEqual(transaction.operations[3], [0], '0'));
   });
+
+  test("HistoryItem sealed", () {
+    final historyItem = HistoryItem();
+
+    historyItem.add(
+      DeleteOperation([0], [TextNode(delta: Delta()..insert('0'))]),
+    );
+
+    historyItem.seal();
+    expect(historyItem.sealed, true);
+  });
 }
 
 bool isInsertAndPathEqual(Operation operation, Path path, [String? content]) {

test/plugins/markdown/document_markdown_test.dart

@@ -0,0 +1,60 @@
+import 'dart:convert';
+
+import 'package:appflowy_editor/appflowy_editor.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('document_markdown.dart tests', () {
+    test('markdownToDocument()', () {
+      final document = markdownToDocument(markdownDocument);
+      final data = Map<String, Object>.from(json.decode(testDocument));
+
+      expect(document.toJson(), data);
+    });
+
+    test('documentToMarkdown()', () {
+      final document = markdownToDocument(markdownDocument);
+      final markdown = documentToMarkdown(document);
+
+      expect(markdown, markdownDocumentEncoded);
+    });
+  });
+}
+
+const testDocument = '''{
+  "document": {
+    "type": "editor",
+    "children": [
+      {
+        "type": "text",
+        "attributes": {"subtype": "heading", "heading": "h1"},
+        "delta": [{"insert": "Heading 1"}]
+      },
+      {
+        "type": "text",
+        "attributes": {"subtype": "heading", "heading": "h2"},
+        "delta": [{"insert": "Heading 2"}]
+      },
+      {
+        "type": "text",
+        "attributes": {"subtype": "heading", "heading": "h3"},
+        "delta": [{"insert": "Heading 3"}]
+      },
+      {"type": "text", "delta": []},
+      {"type": "divider"},
+      {"type": "text", "delta": [{"insert": ""}]}
+    ]
+  }
+}''';
+
+const markdownDocument = """# Heading 1
+## Heading 2
+### Heading 3
+
+---""";
+
+const markdownDocumentEncoded = """# Heading 1
+## Heading 2
+### Heading 3
+
+""";

test/plugins/markdown/encoder/parser/image_node_parser_test.dart

@@ -10,8 +10,14 @@ void main() async {
           'image_src': 'https://appflowy.io',
         },
       );
+
       final result = const ImageNodeParser().transform(node);
       expect(result, '![](https://appflowy.io)');
     });
+
+    test('ImageNodeParser id getter', () {
+      const imageNodeParser = ImageNodeParser();
+      expect(imageNodeParser.id, 'image');
+    });
   });
 }

test/plugins/markdown/encoder/parser/text_node_parser_test.dart

@@ -27,9 +27,34 @@ void main() async {
           BuiltInAttributeKey.heading: BuiltInAttributeKey.h3,
         },
       );
+      final h4 = TextNode(
+        delta: Delta(operations: [TextInsert(text)]),
+        attributes: {
+          BuiltInAttributeKey.subtype: BuiltInAttributeKey.heading,
+          BuiltInAttributeKey.heading: BuiltInAttributeKey.h4,
+        },
+      );
+      final h5 = TextNode(
+        delta: Delta(operations: [TextInsert(text)]),
+        attributes: {
+          BuiltInAttributeKey.subtype: BuiltInAttributeKey.heading,
+          BuiltInAttributeKey.heading: BuiltInAttributeKey.h5,
+        },
+      );
+      final h6 = TextNode(
+        delta: Delta(operations: [TextInsert(text)]),
+        attributes: {
+          BuiltInAttributeKey.subtype: BuiltInAttributeKey.heading,
+          BuiltInAttributeKey.heading: BuiltInAttributeKey.h6,
+        },
+      );
+
       expect(const TextNodeParser().transform(h1), '# $text');
       expect(const TextNodeParser().transform(h2), '## $text');
       expect(const TextNodeParser().transform(h3), '### $text');
+      expect(const TextNodeParser().transform(h4), '#### $text');
+      expect(const TextNodeParser().transform(h5), '##### $text');
+      expect(const TextNodeParser().transform(h6), '###### $text');
     });
 
     test('bulleted list style', () {
@@ -91,5 +116,19 @@ void main() async {
       );
       expect(const TextNodeParser().transform(node), '```\n$text\n```');
     });
+
+    test('fallback', () {
+      final node = TextNode(
+        delta: Delta(operations: [TextInsert(text)]),
+        attributes: {
+          BuiltInAttributeKey.bold: true,
+        },
+      );
+      expect(const TextNodeParser().transform(node), text);
+    });
+
+    test('TextNodeParser.id', () {
+      expect(const TextNodeParser().id, 'text');
+    });
   });
 }

test/render/action_menu/action_menu_item_test.dart

@@ -0,0 +1,48 @@
+import 'package:appflowy_editor/appflowy_editor.dart';
+import 'package:appflowy_editor/src/infra/flowy_svg.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import '../../test_helper.dart';
+
+void main() {
+  group('ActionMenuItem tests', () {
+    testWidgets('ActionMenuItem.icon()', (tester) async {
+      int count = 0;
+
+      final item = ActionMenuItem.icon(
+        iconData: Icons.abc,
+        onPressed: () => count++,
+      );
+
+      await tester.buildAndPump(item.iconBuilder());
+      await tester.pumpAndSettle();
+
+      item.onPressed!.call();
+      expect(count, 1);
+
+      expect(find.byType(Icon), findsOneWidget);
+    });
+
+    testWidgets('ActionMenuItem.svg()', (tester) async {
+      final item = ActionMenuItem.svg(name: 'check', onPressed: () {});
+
+      await tester.buildAndPump(item.iconBuilder());
+      await tester.pumpAndSettle();
+
+      expect(find.byType(FlowySvg), findsOneWidget);
+    });
+
+    testWidgets('ActionMenuItem.separator()', (tester) async {
+      final item = ActionMenuItem.separator();
+
+      await tester.buildAndPump(item.iconBuilder());
+      await tester.pumpAndSettle();
+
+      expect(find.byType(FlowySvg), findsOneWidget);
+
+      final svg = tester.widget<FlowySvg>(find.byType(FlowySvg));
+      expect(svg.name, 'image_toolbar/divider');
+    });
+  });
+}

test/test_helper.dart

@@ -0,0 +1,25 @@
+import 'package:appflowy_editor/appflowy_editor.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+extension BuildAndPump on WidgetTester {
+  Future<void> buildAndPump(Widget child) async {
+    await pumpWidget(
+      MaterialApp(
+        localizationsDelegates: const [
+          GlobalMaterialLocalizations.delegate,
+          GlobalCupertinoLocalizations.delegate,
+          GlobalWidgetsLocalizations.delegate,
+          AppFlowyEditorLocalizations.delegate,
+        ],
+        supportedLocales: AppFlowyEditorLocalizations.delegate.supportedLocales,
+        locale: const Locale('en'),
+        home: Scaffold(
+          body: child,
+        ),
+      ),
+    );
+    await pump();
+  }
+}