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penpot/backend/tests/app/tests/test_common_geom.clj
2021-01-07 11:29:57 +01:00

94 lines
2.7 KiB
Clojure

;; This Source Code Form is subject to the terms of the Mozilla Public
;; License, v. 2.0. If a copy of the MPL was not distributed with this
;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
;;
;; This Source Code Form is "Incompatible With Secondary Licenses", as
;; defined by the Mozilla Public License, v. 2.0.
;;
;; Copyright (c) 2020 UXBOX Labs SL
(ns app.tests.test-common-geom
(:require
[clojure.test :as t]
[app.common.geom.point :as gpt]
[app.common.geom.matrix :as gmt]))
(t/deftest point-constructors-test
(t/testing "Create point with both coordinates"
(let [p (gpt/point 1 2)]
(t/is (= (:x p) 1))
(t/is (= (:y p) 2))))
(t/testing "Create point with single coordinate"
(let [p (gpt/point 1)]
(t/is (= (:x p) 1))
(t/is (= (:y p) 1))))
(t/testing "Create empty point"
(let [p (gpt/point)]
(t/is (= (:x p) 0))
(t/is (= (:y p) 0)))))
(t/deftest point-add-test
(t/testing "Adds two points together"
(let [p1 (gpt/point 1 1)
p2 (gpt/point 2 2)
p3 (gpt/add p1 p2)]
(t/is (= (:x p3) 3))
(t/is (= (:y p3) 3)))))
(t/deftest point-subtract-test
(t/testing "Point substraction"
(let [p1 (gpt/point 3 3)
p2 (gpt/point 2 2)
p3 (gpt/subtract p1 p2)]
(t/is (= (:x p3) 1))
(t/is (= (:y p3) 1)))))
(t/deftest point-distance-test
(let [p1 (gpt/point 0 0)
p2 (gpt/point 10 0)
d (gpt/distance p1 p2)]
(t/is (number? d))
(t/is (= d 10.0))))
(t/deftest point-length-test
(let [p1 (gpt/point 10 0)
ln (gpt/length p1)]
(t/is (number? ln))
(t/is (= ln 10.0))))
(t/deftest point-angle-test
(t/testing "Get angle a 90 degree angle"
(let [p1 (gpt/point 0 10)
angle (gpt/angle p1)]
(t/is (number? angle))
(t/is (= angle 90.0))))
(t/testing "Get 45 degree angle"
(let [p1 (gpt/point 0 10)
p2 (gpt/point 10 10)
angle (gpt/angle-with-other p1 p2)]
(t/is (number? angle))
(t/is (= angle 45.0)))))
(t/deftest matrix-constructors-test
(let [m (gmt/matrix)]
(t/is (= (str m) "matrix(1,0,0,1,0,0)")))
(let [m (gmt/matrix 1 1 1 2 2 2)]
(t/is (= (str m) "matrix(1,1,1,2,2,2)"))))
(t/deftest matrix-translate-test
(let [m (-> (gmt/matrix)
(gmt/translate (gpt/point 2 10)))]
(t/is (= (str m) "matrix(1,0,0,1,2,10)"))))
(t/deftest matrix-scale-test
(let [m (-> (gmt/matrix)
(gmt/scale (gpt/point 2)))]
(t/is (= (str m) "matrix(2,0,0,2,0,0)"))))
(t/deftest matrix-rotate-test
(let [m (-> (gmt/matrix)
(gmt/rotate 10))]
(t/is (= (str m) "matrix(0.984807753012208,0.17364817766693033,-0.17364817766693033,0.984807753012208,0,0)"))))