public function testFirst()
{
// from js
$this->assertEquals(1, __::first(array(1, 2, 3)), 'can pull out the first element of an array');
$this->assertEquals(array(), __::first(array(1, 2, 3), 0), 'can pass an index to first');
$this->assertEquals(array(1, 2), __::first(array(1, 2, 3), 2), 'can pass an index to first');
$this->assertEquals(1, __(array(1, 2, 3))->first(), 'can perform OO-style "first()"');
$result = __::map(array(array(1, 2, 3), array(1, 2, 3)), function ($vals) {
return __::first($vals);
});
$this->assertEquals(array(1, 1), $result, 'works well with _.map');
$func = function () {
return __::first(func_get_args());
};
$result = $func(4, 3, 2, 1);
$this->assertEquals(4, $result, 'works on an arguments object');
// extra
$this->assertEquals(array(1), __::first(array(1, 2, 3), 1), 'can pass an index of 1 to first');
$this->assertEquals(array(4, 5), __(array(4, 5, 6, 7))->first(2), 'can perform OO-style "first()" with index passed');
$this->assertEquals(1, __::head(array(1, 2, 3)), 'aliased as "head"');
$this->assertEquals(array(), __::head(array(1, 2, 3), 0), 'aliased as "head"');
// docs
$this->assertEquals(5, __::first(array(5, 4, 3, 2, 1)));
$this->assertEquals(array(5, 4, 3), __::first(array(5, 4, 3, 2, 1), 3));
}
public function testFirst()
{
// Arrange
$a = [1, 2, 3, 4, 5];
// Act
$x = __::first($a, 2);
// Assert
$this->assertEquals([1, 2], $x);
}
public function testFirst()
{
$object = array(5, 10, 15, 20, 25, 30);
$return = array(15, 20);
$result = __::first($object, 2, function ($row) {
if ($row > 10) {
return true;
} else {
return false;
}
});
$this->assertEquals($return, $result);
}
public function testUniqueId()
{
// docs
$this->assertEquals(0, __::uniqueId());
$this->assertEquals('stooge_1', __::uniqueId('stooge_'));
$this->assertEquals(2, __::uniqueId());
// from js
$ids = array();
$i = 0;
while ($i++ < 100) {
array_push($ids, __::uniqueId());
}
$this->assertEquals(count($ids), count(__::uniq($ids)));
// extra
$this->assertEquals('stooges', join('', __::first(__::uniqueId('stooges'), 7)), 'prefix assignment works');
}