Added more imports

tests/Unit/Rules/ColorRuleTest.php

@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Unit\Rules;
+
+use App\Rules\ColorRule;
+use Illuminate\Support\Facades\Validator;
+use Tests\TestCase;
+
+class ColorRuleTest extends TestCase
+{
+    public function test_validation_passes_if_value_is_valid_color(): void
+    {
+        // Arrange
+        $validator = Validator::make([
+            'color' => '#ef5350',
+        ], [
+            'color' => [new ColorRule()],
+        ]);
+
+        // Act
+        $isValid = $validator->passes();
+        $messages = $validator->messages()->toArray();
+
+        // Assert
+        $this->assertTrue($isValid);
+        $this->assertArrayNotHasKey('color', $messages);
+    }
+
+    public function test_validation_fails_if_value_is_not_a_string(): void
+    {
+        // Arrange
+        $validator = Validator::make([
+            'color' => true,
+        ], [
+            'color' => [new ColorRule()],
+        ]);
+
+        // Act
+        $isValid = $validator->passes();
+        $messages = $validator->messages()->toArray();
+
+        // Assert
+        $this->assertFalse($isValid);
+        $this->assertEquals('The color field must be a string.', $messages['color'][0]);
+    }
+
+    public function test_validation_fails_if_value_is_not_a_valid_color(): void
+    {
+        // Arrange
+        $validator = Validator::make([
+            'color' => 'rgb(0,0,0)',
+        ], [
+            'color' => [new ColorRule()],
+        ]);
+
+        // Act
+        $isValid = $validator->passes();
+        $messages = $validator->messages()->toArray();
+
+        // Assert
+        $this->assertFalse($isValid);
+        $this->assertEquals('The color field must be a valid color.', $messages['color'][0]);
+    }
+}