making things intersect more greedily

1 files changed, 48 insertions, 0 deletions

diff --git a/test/01-test-vec2.js b/test/01-test-vec2.js
new file mode 100644
index 0000000..054d37b
--- /dev/null
+++ b/test/01-test-vec2.js
@@ -0,0 +1,48 @@
+var assert = require("assert")
+var vec2 = require("../public/assets/javascripts/rectangles/models/vec2.js")
+
+describe('vec2', function(){
+  describe('#intersects()', function(){
+		var vec = new vec2(0, 10)
+
+    it('intersects itself', function(){
+      assert.equal(true, vec.intersects( new vec2(0, 10) ));
+    })
+    it('intersects w/ same startpoint (shorter)', function(){
+      assert.equal(true, vec.intersects( new vec2(0, 5) ));
+    })
+    it('intersects w/ same startpoint (longer)', function(){
+      assert.equal(true, vec.intersects( new vec2(0, 15) ));
+    })
+    it('intersects w/ same endpoint (shorter)', function(){
+      assert.equal(true, vec.intersects( new vec2(5, 10) ));
+    })
+    it('intersects w/ same endpoint (longer)', function(){
+      assert.equal(true, vec.intersects( new vec2(-5, 10) ));
+    })
+    it('intersects when contained', function(){
+      assert.equal(true, vec.intersects( new vec2(-5, 15) ));
+    })
+    it('does not intersect when before', function(){
+      assert.equal(false, vec.intersects( new vec2(-10, -5) ));
+    })
+    it('does not intersect when after', function(){
+      assert.equal(false, vec.intersects( new vec2(15, 20) ));
+    })
+    it('contains itself', function(){
+      assert.equal(true, vec.contains( 0 ));
+      assert.equal(true, vec.contains( 5 ));
+      assert.equal(true, vec.contains( 10 ));
+    })
+    it('does not contain before or after', function(){
+      assert.equal(false, vec.contains( -5 ));
+      assert.equal(false, vec.contains( 15 ));
+    })
+    it('intersects when only startpoint matches', function(){
+      assert.equal(true, vec.intersects( new vec2(-5, 0) ));
+    })
+    it('intersects when only endpoint matches', function(){
+      assert.equal(true, vec.intersects( new vec2(10, 15) ));
+    })
+  })
+})