TF-4169 Add precheck for HexColor and unit test

2025-11-27 10:30:59 +07:00
parent 4986c64802
commit e3c076f1fd
4 changed files with 90 additions and 2 deletions
@@ -0,0 +1,71 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:labels/model/hex_color.dart';
+
+void main() {
+  group('HexColor', () {
+    test('creates instance when valid #RRGGBB', () {
+      final color = HexColor('#A1B2C3');
+      expect(color.value, '#A1B2C3');
+    });
+
+    test('creates instance when valid #AARRGGBB', () {
+      final color = HexColor('#80A1B2C3');
+      expect(color.value, '#80A1B2C3');
+    });
+
+    test('throws when value is empty', () {
+      expect(
+        () => HexColor(''),
+        throwsA(
+          predicate((e) =>
+              e is ArgumentError &&
+              e.message == 'hex string must not be empty'),
+        ),
+      );
+    });
+
+    test('throws when missing leading #', () {
+      expect(
+        () => HexColor('A1B2C3'),
+        throwsA(
+          predicate((e) =>
+              e is ArgumentError &&
+              e.message == 'hex string must start with #'),
+        ),
+      );
+    });
+
+    test('throws when format #FFF (unsupported)', () {
+      expect(
+        () => HexColor('#FFF'),
+        throwsA(
+          predicate((e) =>
+              e is ArgumentError &&
+              e.message == 'invalid hex format: expected #RRGGBB or #AARRGGBB'),
+        ),
+      );
+    });
+
+    test('throws when contains invalid characters', () {
+      expect(
+        () => HexColor('#GGHHII'),
+        throwsA(isA<ArgumentError>()),
+      );
+    });
+
+    test('throws when length is too long', () {
+      expect(
+        () => HexColor('#A1B2C3D4E5'),
+        throwsA(isA<ArgumentError>()),
+      );
+    });
+
+    test('supports value equality (Equatable)', () {
+      final c1 = HexColor('#FFFFFF');
+      final c2 = HexColor('#FFFFFF');
+
+      expect(c1, equals(c2));
+      expect(c1.props, equals(['#FFFFFF']));
+    });
+  });
+}