public function testWriteInNotExistingFile() { $filePath = __DIR__ . '/resources/none.txt'; $dummyFileReader = new FileReader($filePath); $this->assertSame('', $dummyFileReader->read()); $this->assertSame(3, $dummyFileReader->write('abc')); $this->assertSame('abc', $dummyFileReader->read()); $this->assertSame(3, $dummyFileReader->write('def')); $this->assertSame('def', $dummyFileReader->read()); unlink($filePath); }