From dc076efd0cc143520c14bc74cf767929df24fe3d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=BCrg=20Lehni?= <juerg@scratchdisk.com>
Date: Tue, 18 Jun 2013 18:29:32 -0700
Subject: [PATCH] Implement unit tests for Curve#getCurvatureAt().
---
test/tests/Curve.js | 37 +++++++++++++++++++++++++++++--------
1 file changed, 29 insertions(+), 8 deletions(-)
diff --git a/test/tests/Curve.js b/test/tests/Curve.js
index 47712fd0..97b2581c 100644
--- a/test/tests/Curve.js
+++ b/test/tests/Curve.js
@@ -39,7 +39,7 @@ test('Curve#getTangentAt()', function() {
radius: 100
}).getFirstCurve();
- var points = [
+ var tangents = [
[0, new Point(0, -165.68542 )],
[0.25, new Point(60.7233, -143.56602)],
[0.5, new Point(108.57864, -108.57864)],
@@ -47,10 +47,10 @@ test('Curve#getTangentAt()', function() {
[1, new Point(165.68542, 0)]
];
- for (var i = 0; i < points.length; i++) {
- var entry = points[i];
+ for (var i = 0; i < tangents.length; i++) {
+ var entry = tangents[i];
comparePoints(curve.getTangentAt(entry[0], true), entry[1],
- 'curve.getPointAt(' + entry[0] + ', true);');
+ 'curve.getTangentAt(' + entry[0] + ', true);');
}
});
@@ -60,7 +60,7 @@ test('Curve#getNormalAt()', function() {
radius: 100
}).getFirstCurve();
- var points = [
+ var normals = [
[0, new Point(-165.68542, 0)],
[0.25, new Point(-143.56602, -60.7233)],
[0.5, new Point(-108.57864, -108.57864)],
@@ -68,9 +68,30 @@ test('Curve#getNormalAt()', function() {
[1, new Point(0, -165.68542)]
];
- for (var i = 0; i < points.length; i++) {
- var entry = points[i];
+ for (var i = 0; i < normals.length; i++) {
+ var entry = normals[i];
comparePoints(curve.getNormalAt(entry[0], true), entry[1],
- 'curve.getPointAt(' + entry[0] + ', true);');
+ 'curve.getNormalAt(' + entry[0] + ', true);');
+ }
+});
+
+test('Curve#getCurvatureAt()', function() {
+ var curve = new Path.Circle({
+ center: [100, 100],
+ radius: 100
+ }).getFirstCurve();
+
+ var curvatures = [
+ [0, 0.009785533905932729],
+ [0.25, 0.010062133221584524],
+ [0.5, 0.009937576453041297],
+ [0.75, 0.010062133221584524],
+ [1, 0.009785533905932727]
+ ];
+
+ for (var i = 0; i < curvatures.length; i++) {
+ var entry = curvatures[i];
+ compareNumbers(curve.getCurvatureAt(entry[0], true), entry[1],
+ 'curve.getCurvatureAt(' + entry[0] + ', true);');
}
});