public deleteCategory(index: number): void {
		// Check if the category can be deleted
		this.categoryModel.find(this.categories[index].id).then((category: Category): void => {
			// Disable navigation on the table
			this.ogTableNavigableService.enabled = false;

			let modalOptions: IModalSettings = {
				backdrop: "static"
			};

			// Check if the category has any transactions
			if (category.num_transactions > 0) {
				// Show an alert modal
				modalOptions = angular.extend({
					templateUrl: OgModalAlertView,
					controller: "OgModalAlertController",
					controllerAs: "vm",
					resolve: {
						alert: (): OgModalAlert => ({
							header: "Category has existing transactions",
							message: "You must first delete these transactions, or reassign to another category before attempting to delete this category."
						})
					}
				}, modalOptions);
			} else {
				// Show the delete category modal
				modalOptions = angular.extend({
					templateUrl: CategoryDeleteView,
					controller: "CategoryDeleteController",
					controllerAs: "vm",
					resolve: {
						category: (): Category => this.categories[index]
					}
				}, modalOptions);
			}

			// Show the modal
			this.$uibModal.open(modalOptions).result.then((): void => {
				// If the deleted category has a parent, decrement the parent's children count
				if (!isNaN(Number(this.categories[index].parent_id))) {
					// Find the parent category by it's id
					const parentIndex = this.categoryIndexById(this.categories[index].parent_id);

					// If found, decrement the number of children
					if (!isNaN(parentIndex)) {
						this.categories[parentIndex].num_children--;
					}
				}

				// Remove the category (and any children) from the array
				this.categories.splice(index, 1 + this.categories[index].num_children);

				// Go back to the parent state
				this.$state.go("root.categories");
			}).finally((): true => (this.ogTableNavigableService.enabled = true));
		});
	}

		it("should cache the response in the $http cache", (): void => {
			const httpGet: SinonStub = sinon.stub($http, "get").returns({
				then(): void {
					// Do nothing
				}
			});

			categoryModel.find(123);
			httpGet.firstCall.args[1].should.have.a.property("cache").that.is.not.false;
		});