Migrate to static data providers using rector/rector

Author: OskarStark

Tests/InstantiatorTest.php

@@ -35,7 +35,7 @@ public function testFailingInstantiation(string $class)
         Instantiator::instantiate($class);
     }
 
-    public function provideFailingInstantiation()
+    public static function provideFailingInstantiation()
     {
         yield ['ReflectionClass'];
         yield ['SplHeap'];

Tests/VarExporterTest.php

@@ -53,7 +53,7 @@ public function testFailingSerialization($value)
         }
     }
 
-    public function provideFailingSerialization()
+    public static function provideFailingSerialization()
     {
         yield [hash_init('md5')];
         yield [new \ReflectionClass(\stdClass::class)];
@@ -122,7 +122,7 @@ public function testExport(string $testName, $value, bool $staticValueExpected =
         }
     }
 
-    public function provideExport()
+    public static function provideExport()
     {
         yield ['multiline-string', ["\0\0\r\nA" => "B\rC\n\n"], true];
         yield ['lf-ending-string', "'BOOM'\n.var_dump(123)//'", true];