/**
* @covers PHPixme\__PRIVATE__::curryExactly2
*/
public function test_curryExactly2()
{
$arity2 = internal::curryExactly2(function (...$args) {
return $args;
});
self::assertInstanceOf(Closure, $arity2, 'it should wrap into a closure');
// Testing thunks
self::assertInstanceOf(Closure, $arity2(), 'thunks should return a closure');
self::assertSame($arity2, $arity2(), 'at zero arguments, that closure should be itself');
self::assertSame($arity2, $arity2(_(), _()), 'thunks should have no effect');
self::assertSame($arity2, $arity2(_()), 'thunks should have no effect');
// Test eating
self::assertEquals([1, 2], $arity2(1, 2, 3, 4), 'the function should eat all but two arguments');
// v1 defined
self::assertEquals($arity2(1)->__invoke(2, 3, 4, 5), $arity2(1, 2, 6, 7, 8));
$intermediate = $arity2(1);
self::assertSame($intermediate, $intermediate(), 'An intermediate X1 _2 should be a thunk');
self::assertSame($intermediate, $intermediate(_()), 'An intermediate X1 _2 should be a thunk');
// v2 defined
self::assertEquals($arity2(_(), 2)->__invoke(1, 3, 4, 5), $arity2(1, 2, 6, 7, 8));
$intermediate = $arity2(_(), 2);
self::assertSame($intermediate, $intermediate(), 'An intermediate X1 _2 should be a thunk');
self::assertSame($intermediate, $intermediate(_()), 'An intermediate X1 _2 should be a thunk');
}
