ts-simple-ast/dist/tests/utils/decorators/memoizeTests.js

TypeScript compiler wrapper for AST navigation and code generation.

"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
Object.defineProperty(exports, "__esModule", { value: true });
const chai_1 = require("chai");
const Memoize_1 = require("./../../../utils/decorators/Memoize");
describe("Memoize", () => {
    let val = 0;
    class MyClass {
        getNumber() {
            return ++val;
        }
        get value() {
            return ++val;
        }
    }
    __decorate([
        Memoize_1.Memoize
    ], MyClass.prototype, "getNumber", null);
    __decorate([
        Memoize_1.Memoize
    ], MyClass.prototype, "value", null);
    const a = new MyClass();
    const b = new MyClass();
    it("method should be memoized", () => {
        chai_1.expect(a.getNumber()).to.equal(a.getNumber());
    });
    it("accessor should be memoized", () => {
        chai_1.expect(a.value).to.equal(a.value);
    });
    it("multiple instances shouldn't share values for methods", () => {
        chai_1.expect(a.getNumber()).to.not.equal(b.getNumber());
    });
    it("multiple instances shouldn't share values for accessors", () => {
        chai_1.expect(a.value).to.not.equal(b.value);
    });
    it("should throw if supplying arguments", () => {
        chai_1.expect(() => a.getNumber(2)).to.throw(Error);
    });
    it("should throw when using memoize on a set accessor", () => {
        chai_1.expect(() => {
            class OtherClass {
                set test(value) {
                    this.value = value;
                }
            }
            __decorate([
                Memoize_1.Memoize
            ], OtherClass.prototype, "test", null);
        }).to.throw(Error);
    });
});

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