Add test case for when a user removes their own post from the show page.

Adjust redirection logic.

public/javascripts/app/views/post_view.js

@@ -119,10 +119,12 @@ app.views.Post = app.views.StreamObject.extend({
     return this.model.get("author").id != (!!app.user() && app.user().id)
   },
 
-  destroy : function() {
-    var posts_uri = new RegExp(this.model.collection.url + '\/[0-9]+$');
+  isOnShowPage : function() {
+    return (!this.model.collection) && (this.model.url() == document.location.pathname);
+  },
 
-    if ((this.model.collection.length == 1) && (posts_uri.test(document.location.pathname))) {
+  destroy : function() {
+    if (this.isOnShowPage()) {
       document.location.replace(Backbone.history.options.root);
     }
   }

spec/javascripts/app/views/post_view_spec.js

@@ -96,5 +96,28 @@ describe("app.views.Post", function(){
         });
       })
     })
+
+    context("user views their own post", function(){
+      beforeEach(function(){
+        this.statusMessage.set({ author: {
+          id : app.user().id
+        }});
+        this.view = new app.views.Post({model : this.statusMessage}).render();
+      })
+
+      it("contains remove post", function(){
+        expect(this.view.$(".remove_post")).toExist();
+      })
+
+      it("destroys the view when they delete a their post from the show page", function(){
+        spyOn(window, "confirm").andReturn(true);
+
+        this.view.$(".remove_post").click();
+
+        expect(window.confirm).toHaveBeenCalled();
+        expect(this.view).not.toExist();
+      })
+    })
+
   })
 });