Add possibility to pass empty variation value to keep param empty (#25)

* #23 create fake variation value when not given

Author: davidhoelzel

src/Component/ComponentItemFactory.php

@@ -129,7 +129,7 @@ private function createVariationParameters(array $parameters, array $variation):
             if (\is_array($type)) {
                 $paramValue = $this->createVariationParameters($type, $variation[$name] ?? []);
             } else {
-                $paramValue = $this->faker->getFakeData([$name => $type], $variation[$name] ?? []);
+                $paramValue = $this->faker->getFakeData([$name => $type], $variation[$name] ?? null);
             }
             $params += $paramValue;
         }

src/Component/Data/Faker.php

@@ -17,7 +17,7 @@ public function __construct(
     ) {
     }
 
-    public function getFakeData(array $params, mixed $variation = []): array
+    public function getFakeData(array $params, mixed $variation = null): array
     {
         return $this->createFakeData($params, $variation);
     }
@@ -34,7 +34,7 @@ private function createFakeData(array $params, mixed $variation): array
             }
 
             foreach ($this->generators as $generator) {
-                if (\array_key_exists($name, $result) || !$generator->supports($type)) {
+                if (\array_key_exists($name, $result)) {
                     continue;
                 }
                 if ($generator->supports($type, $variation)) {

src/Component/Data/Generator/ScalarGenerator.php

@@ -21,7 +21,7 @@ public function __construct()
     public function supports(string $type, mixed $context = null): bool
     {
         // context normally contains the param values for a specific variation, so we generate random values only for non-set params
-        return empty($context) && \in_array(strtolower($type), [
+        return null === $context && \in_array(strtolower($type), [
             Type::BUILTIN_TYPE_BOOL,
             Type::BUILTIN_TYPE_FLOAT,
             Type::BUILTIN_TYPE_INT,

tests/Functional/Service/ComponentItemFactoryTest.php

@@ -219,10 +219,12 @@ public function testCreateForParamWithOptionalVariationValue(): void
             'parameters' => [
                 'stringParam' => 'String',
                 'secondParam' => 'String',
+                'optionalEmpty' => 'String',
             ],
             'variations' => [
                 'variation1' => [
                     'stringParam' => 'Some cool hipster text',
+                    'optionalEmpty' => '',
                 ],
             ],
         ];
@@ -237,6 +239,7 @@ public function testCreateForParamWithOptionalVariationValue(): void
         self::assertArrayHasKey('variation1', $variations);
         self::assertArrayHasKey('secondParam', $variations['variation1']);
         self::assertIsString($variations['variation1']['secondParam']);
+        self::assertNull($variations['variation1']['optionalEmpty']);
     }
 
     public static function getInvalidComponentConfigurationTestCases(): iterable