Test EmbedRegistry

Author: amantoux

packages/fleather/test/widgets/embed_registry_test.dart

@@ -0,0 +1,102 @@
+import 'package:fleather/fleather.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('$EmbedRegistry', () {
+    test('create fallback', () {
+      final registry = EmbedRegistry.fallback();
+      final hr = registry.blockEmbed(EmbeddableObject('hr', inline: false));
+      expect(hr, isA<HorizontalRule>());
+    });
+
+    test('create with configurations', () {
+      final registry = EmbedRegistry.withConfigurations([FakeBlockEmbed()]);
+      final fakeBlock =
+          registry.blockEmbed(EmbeddableObject('fake_block', inline: false));
+      expect(fakeBlock, isA<FakeBlockEmbed>());
+    });
+
+    test('create fallback with configurations', () {
+      final registry =
+          EmbedRegistry.fallbackWithConfigurations([FakeBlockEmbed()]);
+      final fakeBlock =
+          registry.blockEmbed(EmbeddableObject('fake_block', inline: false));
+      expect(fakeBlock, isA<FakeBlockEmbed>());
+      final hr = registry.blockEmbed(EmbeddableObject('hr', inline: false));
+      expect(hr, isA<HorizontalRule>());
+    });
+
+    test('cannot register twice the same key', () {
+      try {
+        final registry = EmbedRegistry.withConfigurations([
+          FakeBlockEmbed(), FakeBlockEmbed()
+        ]);
+      } on ArgumentError catch (_) {
+        return;
+      }
+      fail('Should throw an argument error');
+    });
+
+    test('spanEmbed - find nothing', () {
+      final registry = EmbedRegistry();
+      try {
+        registry.spanEmbed(EmbeddableObject('fake_span', inline: true));
+      } on StateError catch (_) {
+        return;
+      }
+      fail('Should throw an assertion error');
+    });
+
+    test('spanEmbed - finds a block embed', () {
+      final registry =
+          EmbedRegistry.fallbackWithConfigurations([FakeBlockEmbed()]);
+      try {
+        registry
+            .spanEmbed(EmbeddableObject(FakeBlockEmbed().key, inline: true));
+      } on AssertionError catch (_) {
+        return;
+      }
+      fail('Should throw an assertion error');
+    });
+
+    test('blockEmbed - find nothing', () {
+      final registry = EmbedRegistry();
+      try {
+        registry.blockEmbed(EmbeddableObject('fake_block', inline: false));
+      } on StateError catch (_) {
+        return;
+      }
+      fail('Should throw an assertion error');
+    });
+
+    test('blockEmbed - finds a span embed', () {
+      final registry = EmbedRegistry.withConfigurations([FakeSpanEmbed()]);
+      try {
+        registry
+            .blockEmbed(EmbeddableObject(FakeSpanEmbed().key, inline: false));
+      } on AssertionError catch (_) {
+        return;
+      }
+      fail('Should throw an assertion error');
+    });
+  });
+}
+
+class FakeBlockEmbed extends BlockEmbedConfiguration {
+  FakeBlockEmbed() : super(key: 'fake_block');
+
+  @override
+  Widget build(BuildContext context, Map<String, dynamic> data) {
+    return Text('Span');
+  }
+}
+
+class FakeSpanEmbed extends SpanEmbedConfiguration {
+  FakeSpanEmbed() : super(key: 'fake_span');
+
+  @override
+  Widget build(BuildContext context, Map<String, dynamic> data) {
+    return Text('Block');
+  }
+}