Fix touch on non-existent files in uv / eio drivers

Fixes #73.

Author: kelunik

src/Driver/EioFilesystemDriver.php

@@ -313,6 +313,10 @@ public function touch(string $path, ?int $modificationTime, ?int $accessTime): v
         $modificationTime = $modificationTime ?? \time();
         $accessTime = $accessTime ?? $modificationTime;
 
+        if (!$this->getStatus($path)) {
+            $this->openFile($path, 'c')->close();
+        }
+
         $deferred = new DeferredFuture;
         $this->poll->listen();
 

src/Driver/UvFilesystemDriver.php

@@ -363,6 +363,10 @@ public function touch(string $path, ?int $modificationTime, ?int $accessTime): v
         $modificationTime = $modificationTime ?? \time();
         $accessTime = $accessTime ?? $modificationTime;
 
+        if (!$this->getStatus($path)) {
+            $this->openFile($path, 'c')->close();
+        }
+
         $deferred = new DeferredFuture;
         $this->poll->listen();
 

test/FilesystemDriverTest.php

@@ -504,6 +504,9 @@ public function testTouch(): void
 
         $this->assertTrue($newStat["atime"] > $oldStat["atime"]);
         $this->assertTrue($newStat["mtime"] > $oldStat["mtime"]);
+
+        $this->driver->touch($touch);
+        self::assertFileExists($touch);
     }
 
     /**