/**
* Test pushing a field to the beginning of a set.
*
* This tests {@link FieldList->unshift()}.
*/
public function testPushFieldToBeginningOfSet()
{
$fields = new FieldList();
/* A field named Country is added to the set */
$fields->unshift(new TextField('Country'));
/* We only have 1 field in the set */
$this->assertEquals(1, $fields->Count());
/* Another field called Email is added to the set */
$fields->unshift(new EmailField('Email'));
/* There are now 2 fields in the set */
$this->assertEquals(2, $fields->Count());
/* The most recently added field is at the beginning of the set */
$this->assertEquals('Email', $fields->First()->getName());
// Test that pushing a composite field without a name onto the set works
$fields->unshift(new CompositeField(new TextField('Test1'), new TextField('Test2')));
$this->assertEquals(3, $fields->Count());
}