cargdev/angular
1
0
Fork 0
Code Issues 8 Pull Requests Actions Packages Projects Releases Wiki Activity

feat(injector): implement InjectLazy

Browse Source
This commit is contained in:
vsavkin
2014-10-06 13:45:24 -04:00
parent e02cdfe733
commit a0176273c5
7 changed files with 98 additions and 48 deletions
Download Patch File Download Diff File Expand all files Collapse all files

86
modules/di/test/di/injector_spec.js
View File

@ -1,5 +1,5 @@
import {describe, it, iit, expect, beforeEach} from 'test_lib/test_lib';
import {Injector, Inject, bind} from 'di/di';
import {describe, ddescribe, it, iit, expect, beforeEach} from 'test_lib/test_lib';
import {Injector, Inject, InjectLazy, bind} from 'di/di';
class Engine {}
class BrokenEngine {
@ -19,6 +19,12 @@ class Car {
}
}
class CarWithLazyEngine {
constructor(@InjectLazy(Engine) engineFactory) {
this.engineFactory = engineFactory;
}
}
class CarWithDashboard {
constructor(engine:Engine, dashboard:Dashboard) {
this.engine = engine;
@ -118,31 +124,6 @@ export function main() {
expect(() => new Injector([bind("blah")])).toThrowError('Invalid binding blah');
});
describe("child", function () {
it('should load instances from parent injector', function() {
var parent = new Injector([Engine]);
var child = parent.createChild([]);
var engineFromParent = parent.get(Engine);
var engineFromChild = child.get(Engine);
expect(engineFromChild).toBe(engineFromParent);
});
it('should create new instance in a child injector', function() {
var parent = new Injector([Engine]);
var child = parent.createChild([
bind(Engine).toClass(TurboEngine)
]);
var engineFromParent = parent.get(Engine);
var engineFromChild = child.get(Engine);
expect(engineFromParent).not.toBe(engineFromChild);
expect(engineFromChild).toBeAnInstanceOf(TurboEngine);
});
});
it('should provide itself', function() {
var parent = new Injector([]);
var child = parent.createChild([]);
@ -184,5 +165,56 @@ export function main() {
expect(e.message).toContain("Error during instantiation of Engine! (Car -> Engine)");
}
});
describe("child", function () {
it('should load instances from parent injector', function() {
var parent = new Injector([Engine]);
var child = parent.createChild([]);
var engineFromParent = parent.get(Engine);
var engineFromChild = child.get(Engine);
expect(engineFromChild).toBe(engineFromParent);
});
it('should create new instance in a child injector', function() {
var parent = new Injector([Engine]);
var child = parent.createChild([
bind(Engine).toClass(TurboEngine)
]);
var engineFromParent = parent.get(Engine);
var engineFromChild = child.get(Engine);
expect(engineFromParent).not.toBe(engineFromChild);
expect(engineFromChild).toBeAnInstanceOf(TurboEngine);
});
});
describe("lazy", function () {
it("should create dependencies lazily", function () {
var injector = new Injector([
Engine,
CarWithLazyEngine
]);
var car = injector.get(CarWithLazyEngine);
expect(car.engineFactory()).toBeAnInstanceOf(Engine);
});
it("should cache instance created lazily", function () {
var injector = new Injector([
Engine,
CarWithLazyEngine
]);
var car = injector.get(CarWithLazyEngine);
var e1 = car.engineFactory();
var e2 = car.engineFactory();
expect(e1).toBe(e2);
});
});
});
}