public function testConverged()
{
$mock = $this->getMockBuilder(StoppingCriteria::class)->setMethods(['converged'])->getMock();
$mock->expects($this->once())->method('converged')->with([1], [2]);
$calledObject = $this->getMockBuilder(stdClass::class)->setMethods(['called'])->getMock();
$calledObject->expects($this->once())->method('called')->with([[1], [2]]);
$criteria = new DescentSpy($mock, function (array $gradient, array $coefficients) use($calledObject) {
$calledObject->called(func_get_args());
});
$criteria->converged([1], [2]);
}
