Helper function: asserts that the ending array of tags is what we wanted.
function assertTags($tags) {
$original = $this->validTags;
foreach ($tags as $tag) {
$key = array_search($tag, $original);
$this
->assertTrue($key, format_string('Make sure tag %tag shows up in the final tags array (originally %original)', array(
'%tag' => $tag,
'%original' => $key,
)));
unset($original[$key]);
}
foreach ($original as $leftover) {
$this
->fail(format_string('Leftover tag %leftover was left over.', array(
'%leftover' => $leftover,
)));
}
}