Add HitResult tests (work in progress).

src/load.js

@@ -124,7 +124,9 @@ if (window.tests) {
 		'test/tests/Path_Length.js',
 		'test/tests/CompoundPath.js',
 
-		'test/tests/PlacedSymbol.js'
+		'test/tests/PlacedSymbol.js',
+
+		'test/tests/HitResult.js'
 	);
 }
 

test/tests/HitResult.js

@@ -0,0 +1,114 @@
+/*
+ * Paper.js
+ *
+ * This file is part of Paper.js, a JavaScript Vector Graphics Library,
+ * based on Scriptographer.org and designed to be largely API compatible.
+ * http://paperjs.org/
+ * http://scriptographer.org/
+ *
+ * Copyright (c) 2011, Juerg Lehni & Jonathan Puckey
+ * http://lehni.org/ & http://jonathanpuckey.com/
+ *
+ * Distributed under the MIT license. See LICENSE file for details.
+ *
+ * All rights reserved.
+ */
+
+module('HitResult');
+
+test('hitting a filled shape', function() {
+	var path = new Path.Circle([50, 50], 50);
+	
+	var hitResult = path.hitTest([75, 75]);
+	equals(function() {
+		return hitResult == null;
+	}, true, 'Since the path is not filled, the hit-test should return null');
+
+	path.fillColor = 'red';
+	hitResult = path.hitTest([75, 75]);
+	equals(function() {
+		return hitResult.type == 'fill';
+	}, true);
+	equals(function() {
+		return hitResult.item == path;
+	}, true);
+});
+
+test('the item on top should be returned', function() {
+	var path = new Path.Circle([50, 50], 50);
+	path.fillColor = 'red';
+
+	// The cloned path is lying above the path:
+	var copy = path.clone();
+
+	var hitResult = paper.project.hitTest([75, 75]);
+	equals(function() {
+		return hitResult.item == copy;
+	}, true);
+});
+
+test('hitting a stroked path', function() {
+	var path = new Path([0, 0], [50, 0]);
+	
+	// We are hit testing with an offset of 5pt on a path with a stroke width
+	// of 10:
+
+	var hitResult = paper.project.hitTest([25, 5]);
+	equals(function() {
+		return hitResult == null;
+	}, true, 'Since the path is not stroked yet, the hit-test should return null');
+
+	path.strokeColor = 'black';
+	path.strokeWidth = 10;
+	hitResult = path.hitTest([25, 5]);
+	equals(function() {
+		return hitResult.type == 'stroke';
+	}, true);
+	equals(function() {
+		return hitResult.item == path;
+	}, true);
+});
+
+test('hitting path handles', function() {
+	var path = new Path(new Segment({
+		point: [0, 0],
+		handleIn: [-50, -50],
+		handleOut: [50, 50]
+	}));
+
+	var hitResult = paper.project.hitTest([50, 50], {
+		handles: true
+	});
+	
+	equals(function() {
+		return !!hitResult;
+	}, true, 'A HitResult should be returned (1)');
+	
+	if (hitResult) {
+		equals(function() {
+			return hitResult.type;
+		}, 'handle-out');
+	
+		equals(function() {
+			return hitResult.item == path;
+		}, true);
+	}
+
+	var hitResult = paper.project.hitTest([-50, -50], {
+		handles: true
+	});
+
+	equals(function() {
+		return !!hitResult;
+	}, true, 'A HitResult should be returned (2)');
+
+	if (hitResult) {
+		equals(function() {
+			return hitResult.type;
+		}, 'handle-in');
+
+		equals(function() {
+			return hitResult.item == path;
+		}, true);
+	}
+});