neon: test HexColor

packages/neon/neon/lib/src/utils/hex_color.dart

@@ -1,11 +1,11 @@
 part of '../../neon.dart';
 
 class HexColor extends Color {
-  HexColor(final String hexColor)
-      : super(
-          int.parse(
-            hexColor.toUpperCase().replaceAll('#', '').padLeft(8, 'F'),
-            radix: 16,
-          ),
-        );
+  HexColor(final String hexColor) : super(_parse(hexColor));
+
+  static int _parse(final String hexColor) {
+    final formated = hexColor.toUpperCase().replaceAll('#', '').padLeft(8, 'F');
+
+    return int.parse(formated, radix: 16);
+  }
 }

packages/neon/neon/test/hex_color_test.dart

@@ -0,0 +1,31 @@
+import 'package:flutter/material.dart';
+import 'package:neon/neon.dart';
+import 'package:test/test.dart';
+
+void main() {
+  group('HexColor', () {
+    test('White', () {
+      final color = HexColor('#ffffffff');
+
+      expect(color.value, equals(Colors.white.value));
+    });
+
+    test('Without alpha', () {
+      final color = HexColor('#ffffff');
+
+      expect(color.value, equals(Colors.white.value));
+    });
+
+    test('Without #', () {
+      final color = HexColor('ffffffff');
+
+      expect(color.value, equals(Colors.white.value));
+    });
+
+    test('Uppercase', () {
+      final color = HexColor('#FFFFFFFF');
+
+      expect(color.value, equals(Colors.white.value));
+    });
+  });
+}