public function testStaticFlow()
{
$file1 = $this->makeFile('merge/static/file1', "line 1\nline 2\n");
$file2 = $this->makeFile('merge/static/file2', "line 3\nline 4\n");
$merged = $this->makeFile('merge/static/merged');
$flow = Flow::merge($merged);
$collection = new FileNodeCollection([$file1, $file2]);
$output = $flow->flow($collection);
static::assertSame($output, $merged);
static::assertEquals(["line 1", "line 2", "line 3", "line 4"], $output->getContents());
}
