add reflection util tests (#116)

src/ZM/Utils/ReflectionUtil.php

@@ -69,7 +69,7 @@ class ReflectionUtil
             case is_object($var):
                 return get_class($var);
             case is_resource($var):
-                return 'resource' . get_resource_type($var);
+                return 'resource(' . get_resource_type($var) . ')';
             case is_null($var):
                 return 'null';
             case is_bool($var):

tests/ZM/Utils/ReflectionUtilTest.php

@@ -0,0 +1,104 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\ZM\Utils;
+
+use Closure;
+use PHPUnit\Framework\TestCase;
+use ReflectionFunctionAbstract;
+use ZM\Utils\ReflectionUtil;
+
+/**
+ * @internal
+ */
+class ReflectionUtilTest extends TestCase
+{
+    public function testDetermineStaticMethod(): void
+    {
+        $this->assertFalse(ReflectionUtil::isNonStaticMethod([ReflectionUtilTestClass::class, 'staticMethod']));
+    }
+
+    public function testDetermineNonStaticMethod(): void
+    {
+        $this->assertTrue(ReflectionUtil::isNonStaticMethod([ReflectionUtilTestClass::class, 'method']));
+    }
+
+    public function testGetParameterClassName(): void
+    {
+        $class = new \ReflectionClass(ReflectionUtilTestClass::class);
+        $method = $class->getMethod('method');
+        [$string_parameter, $object_parameter] = $method->getParameters();
+
+        $this->assertNull(ReflectionUtil::getParameterClassName($string_parameter));
+        $this->assertSame(ReflectionUtilTestClass::class, ReflectionUtil::getParameterClassName($object_parameter));
+    }
+
+    /**
+     * @dataProvider provideTestVariableToString
+     * @param mixed $variable
+     */
+    public function testVariableToString($variable, string $expected): void
+    {
+        $this->assertSame($expected, ReflectionUtil::variableToString($variable));
+    }
+
+    public function provideTestVariableToString(): array
+    {
+        return [
+            'callable' => [[new ReflectionUtilTestClass(), 'method'], ReflectionUtilTestClass::class . '@method'],
+            'static callable' => [[ReflectionUtilTestClass::class, 'staticMethod'], ReflectionUtilTestClass::class . '::staticMethod'],
+            'closure' => [Closure::fromCallable([$this, 'testVariableToString']), 'closure'],
+            'string' => ['string', 'string'],
+            'array' => [['123', '42', 'hello', 122], 'array["123","42","hello",122]'],
+            'object' => [new \stdClass(), 'stdClass'],
+            'resource' => [fopen('php://memory', 'rb'), 'resource(stream)'],
+            'null' => [null, 'null'],
+            'boolean 1' => [true, 'true'],
+            'boolean 2' => [false, 'false'],
+            'float' => [123.456, '123.456'],
+            'integer' => [123, '123'],
+        ];
+    }
+
+    /**
+     * @dataProvider provideTestGetCallReflector
+     * @param mixed $callback
+     */
+    public function testGetCallReflector($callback, ReflectionFunctionAbstract $expected): void
+    {
+        $this->assertEquals($expected, ReflectionUtil::getCallReflector($callback));
+    }
+
+    public function provideTestGetCallReflector(): array
+    {
+        $closure = function () {
+        };
+
+        return [
+            'callable' => [[new ReflectionUtilTestClass(), 'method'], new \ReflectionMethod(ReflectionUtilTestClass::class, 'method')],
+            'static callable' => [[ReflectionUtilTestClass::class, 'staticMethod'], new \ReflectionMethod(ReflectionUtilTestClass::class, 'staticMethod')],
+            'class::method' => [ReflectionUtilTestClass::class . '::staticMethod', new \ReflectionMethod(ReflectionUtilTestClass::class, 'staticMethod')],
+            'invokable class' => [new InvokableClass(), new \ReflectionMethod(InvokableClass::class, '__invoke')],
+            'closure' => [$closure, new \ReflectionFunction($closure)],
+        ];
+    }
+}
+
+class ReflectionUtilTestClass
+{
+    public function method(string $string, ReflectionUtilTestClass $class): void
+    {
+    }
+
+    public static function staticMethod(string $string, ReflectionUtilTestClass $class): void
+    {
+    }
+}
+
+class InvokableClass
+{
+    public function __invoke(): void
+    {
+    }
+}