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(defpackage lizfcm/tests.approx
(:use :cl
:fiveam
:lizfcm.approx
:lizfcm.utils
:lizfcm/tests)
(:export :approx-suite))
(in-package :lizfcm/tests.approx)
(def-suite approx-suite
:in lizfcm-test-suite)
(in-suite approx-suite)
(test derivative-at
:description "derivative at is within bounds"
(let ((f (lambda (x) (* x x)))
(x 2)
(f-prime-at-x 4)
(delta 0.01))
(is (within-range-p
(derivative-at f x delta)
f-prime-at-x
0.1))))
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