spec/cg_point_spec.rb in geomotion-0.7.0 vs spec/cg_point_spec.rb in geomotion-0.10.0

@@ -46,13 +46,32 @@
       point = CGPointMake(1, 1).right(1)
       CGPointEqualToPoint(point, CGPointMake(2, 1)).should == true
     end
   end
 
-  describe "#chaining up().down().left().right()" do
+  describe "chaining up().down().left().right()" do
     it "should work" do
       point = CGPointMake(1, 1).up(2).down(1).left(2).right(1)
       CGPointEqualToPoint(point, CGPointMake(0, 0)).should == true
+    end
+  end
+
+  describe "#distance_to" do
+    it "should work" do
+      point = CGPoint.make(x: 10, y: 100)
+      point.distance_to(CGPoint.make(x: 13, y:104)).should == 5
+      point.distance_to(CGPoint.make(x: 14, y:103)).should == 5
+    end
+  end
+
+  describe "#angle_to" do
+    it "should work" do
+      point = CGPoint.make(x: 0, y: 0)
+      point.angle_to(CGPoint.make(x: 10, y:0)).should == 0
+      (0.785 - point.angle_to(CGPoint.make(x: 10, y:10))).abs.should < 0.01  # ~= Math::PI/4
+      (1.57 - point.angle_to(CGPoint.make(x: 0, y:10))).abs.should < 0.01  # ~= Math::PI/2
+      (3.14 - point.angle_to(CGPoint.make(x: -10, y:0))).abs.should < 0.01  # ~= Math::PI
+      (-1.57 - point.angle_to(CGPoint.make(x: 0, y:-10))).abs.should < 0.01  # ~= -Math::PI/2
     end
   end
 
   describe "#+" do
     it "should work with CGSize" do
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