public function testDumpFileOverwritesAnExistingFile()
{
$filename = $this->workspace . DIRECTORY_SEPARATOR . 'foo.txt';
file_put_contents($filename, 'FOO BAR');
$this->filesystem->dumpFile($filename, 'bar');
$this->assertFileExists($filename);
$this->assertSame('bar', file_get_contents($filename));
}
