fix(di): injecting null causes a cyclic dependency
This commit is contained in:
vsavkin
parent
46bb4e37ba
commit
d1393b0581
|
|
@ -197,16 +197,16 @@ export interface InjectorStrategy {
|
|||
}
|
||||
|
||||
export class InjectorInlineStrategy implements InjectorStrategy {
|
||||
obj0: any = null;
|
||||
obj1: any = null;
|
||||
obj2: any = null;
|
||||
obj3: any = null;
|
||||
obj4: any = null;
|
||||
obj5: any = null;
|
||||
obj6: any = null;
|
||||
obj7: any = null;
|
||||
obj8: any = null;
|
||||
obj9: any = null;
|
||||
obj0: any = undefinedValue;
|
||||
obj1: any = undefinedValue;
|
||||
obj2: any = undefinedValue;
|
||||
obj3: any = undefinedValue;
|
||||
obj4: any = undefinedValue;
|
||||
obj5: any = undefinedValue;
|
||||
obj6: any = undefinedValue;
|
||||
obj7: any = undefinedValue;
|
||||
obj8: any = undefinedValue;
|
||||
obj9: any = undefinedValue;
|
||||
|
||||
constructor(public injector: Injector, public protoStrategy: ProtoInjectorInlineStrategy) {}
|
||||
|
||||
|
|
@ -217,16 +217,26 @@ export class InjectorInlineStrategy implements InjectorStrategy {
|
|||
inj._constructionCounter = 0;
|
||||
|
||||
|
||||
if (isPresent(p.keyId0) && isBlank(this.obj0)) this.obj0 = inj._new(p.binding0, p.visibility0);
|
||||
if (isPresent(p.keyId1) && isBlank(this.obj1)) this.obj1 = inj._new(p.binding1, p.visibility1);
|
||||
if (isPresent(p.keyId2) && isBlank(this.obj2)) this.obj2 = inj._new(p.binding2, p.visibility2);
|
||||
if (isPresent(p.keyId3) && isBlank(this.obj3)) this.obj3 = inj._new(p.binding3, p.visibility3);
|
||||
if (isPresent(p.keyId4) && isBlank(this.obj4)) this.obj4 = inj._new(p.binding4, p.visibility4);
|
||||
if (isPresent(p.keyId5) && isBlank(this.obj5)) this.obj5 = inj._new(p.binding5, p.visibility5);
|
||||
if (isPresent(p.keyId6) && isBlank(this.obj6)) this.obj6 = inj._new(p.binding6, p.visibility6);
|
||||
if (isPresent(p.keyId7) && isBlank(this.obj7)) this.obj7 = inj._new(p.binding7, p.visibility7);
|
||||
if (isPresent(p.keyId8) && isBlank(this.obj8)) this.obj8 = inj._new(p.binding8, p.visibility8);
|
||||
if (isPresent(p.keyId9) && isBlank(this.obj9)) this.obj9 = inj._new(p.binding9, p.visibility9);
|
||||
if (isPresent(p.keyId0) && this.obj0 === undefinedValue)
|
||||
this.obj0 = inj._new(p.binding0, p.visibility0);
|
||||
if (isPresent(p.keyId1) && this.obj1 === undefinedValue)
|
||||
this.obj1 = inj._new(p.binding1, p.visibility1);
|
||||
if (isPresent(p.keyId2) && this.obj2 === undefinedValue)
|
||||
this.obj2 = inj._new(p.binding2, p.visibility2);
|
||||
if (isPresent(p.keyId3) && this.obj3 === undefinedValue)
|
||||
this.obj3 = inj._new(p.binding3, p.visibility3);
|
||||
if (isPresent(p.keyId4) && this.obj4 === undefinedValue)
|
||||
this.obj4 = inj._new(p.binding4, p.visibility4);
|
||||
if (isPresent(p.keyId5) && this.obj5 === undefinedValue)
|
||||
this.obj5 = inj._new(p.binding5, p.visibility5);
|
||||
if (isPresent(p.keyId6) && this.obj6 === undefinedValue)
|
||||
this.obj6 = inj._new(p.binding6, p.visibility6);
|
||||
if (isPresent(p.keyId7) && this.obj7 === undefinedValue)
|
||||
this.obj7 = inj._new(p.binding7, p.visibility7);
|
||||
if (isPresent(p.keyId8) && this.obj8 === undefinedValue)
|
||||
this.obj8 = inj._new(p.binding8, p.visibility8);
|
||||
if (isPresent(p.keyId9) && this.obj9 === undefinedValue)
|
||||
this.obj9 = inj._new(p.binding9, p.visibility9);
|
||||
}
|
||||
|
||||
attach(parent: Injector, isBoundary: boolean): void {
|
||||
|
|
@ -236,16 +246,16 @@ export class InjectorInlineStrategy implements InjectorStrategy {
|
|||
}
|
||||
|
||||
dehydrate() {
|
||||
this.obj0 = null;
|
||||
this.obj1 = null;
|
||||
this.obj2 = null;
|
||||
this.obj3 = null;
|
||||
this.obj4 = null;
|
||||
this.obj5 = null;
|
||||
this.obj6 = null;
|
||||
this.obj7 = null;
|
||||
this.obj8 = null;
|
||||
this.obj9 = null;
|
||||
this.obj0 = undefinedValue;
|
||||
this.obj1 = undefinedValue;
|
||||
this.obj2 = undefinedValue;
|
||||
this.obj3 = undefinedValue;
|
||||
this.obj4 = undefinedValue;
|
||||
this.obj5 = undefinedValue;
|
||||
this.obj6 = undefinedValue;
|
||||
this.obj7 = undefinedValue;
|
||||
this.obj8 = undefinedValue;
|
||||
this.obj9 = undefinedValue;
|
||||
}
|
||||
|
||||
getObjByKeyId(keyId: number, visibility: number): any {
|
||||
|
|
@ -253,61 +263,61 @@ export class InjectorInlineStrategy implements InjectorStrategy {
|
|||
var inj = this.injector;
|
||||
|
||||
if (p.keyId0 === keyId && (p.visibility0 & visibility) > 0) {
|
||||
if (isBlank(this.obj0)) {
|
||||
if (this.obj0 === undefinedValue) {
|
||||
this.obj0 = inj._new(p.binding0, p.visibility0);
|
||||
}
|
||||
return this.obj0;
|
||||
}
|
||||
if (p.keyId1 === keyId && (p.visibility1 & visibility) > 0) {
|
||||
if (isBlank(this.obj1)) {
|
||||
if (this.obj1 === undefinedValue) {
|
||||
this.obj1 = inj._new(p.binding1, p.visibility1);
|
||||
}
|
||||
return this.obj1;
|
||||
}
|
||||
if (p.keyId2 === keyId && (p.visibility2 & visibility) > 0) {
|
||||
if (isBlank(this.obj2)) {
|
||||
if (this.obj2 === undefinedValue) {
|
||||
this.obj2 = inj._new(p.binding2, p.visibility2);
|
||||
}
|
||||
return this.obj2;
|
||||
}
|
||||
if (p.keyId3 === keyId && (p.visibility3 & visibility) > 0) {
|
||||
if (isBlank(this.obj3)) {
|
||||
if (this.obj3 === undefinedValue) {
|
||||
this.obj3 = inj._new(p.binding3, p.visibility3);
|
||||
}
|
||||
return this.obj3;
|
||||
}
|
||||
if (p.keyId4 === keyId && (p.visibility4 & visibility) > 0) {
|
||||
if (isBlank(this.obj4)) {
|
||||
if (this.obj4 === undefinedValue) {
|
||||
this.obj4 = inj._new(p.binding4, p.visibility4);
|
||||
}
|
||||
return this.obj4;
|
||||
}
|
||||
if (p.keyId5 === keyId && (p.visibility5 & visibility) > 0) {
|
||||
if (isBlank(this.obj5)) {
|
||||
if (this.obj5 === undefinedValue) {
|
||||
this.obj5 = inj._new(p.binding5, p.visibility5);
|
||||
}
|
||||
return this.obj5;
|
||||
}
|
||||
if (p.keyId6 === keyId && (p.visibility6 & visibility) > 0) {
|
||||
if (isBlank(this.obj6)) {
|
||||
if (this.obj6 === undefinedValue) {
|
||||
this.obj6 = inj._new(p.binding6, p.visibility6);
|
||||
}
|
||||
return this.obj6;
|
||||
}
|
||||
if (p.keyId7 === keyId && (p.visibility7 & visibility) > 0) {
|
||||
if (isBlank(this.obj7)) {
|
||||
if (this.obj7 === undefinedValue) {
|
||||
this.obj7 = inj._new(p.binding7, p.visibility7);
|
||||
}
|
||||
return this.obj7;
|
||||
}
|
||||
if (p.keyId8 === keyId && (p.visibility8 & visibility) > 0) {
|
||||
if (isBlank(this.obj8)) {
|
||||
if (this.obj8 === undefinedValue) {
|
||||
this.obj8 = inj._new(p.binding8, p.visibility8);
|
||||
}
|
||||
return this.obj8;
|
||||
}
|
||||
if (p.keyId9 === keyId && (p.visibility9 & visibility) > 0) {
|
||||
if (isBlank(this.obj9)) {
|
||||
if (this.obj9 === undefinedValue) {
|
||||
this.obj9 = inj._new(p.binding9, p.visibility9);
|
||||
}
|
||||
return this.obj9;
|
||||
|
|
@ -339,12 +349,13 @@ export class InjectorDynamicStrategy implements InjectorStrategy {
|
|||
|
||||
constructor(public protoStrategy: ProtoInjectorDynamicStrategy, public injector: Injector) {
|
||||
this.objs = ListWrapper.createFixedSize(protoStrategy.bindings.length);
|
||||
ListWrapper.fill(this.objs, undefinedValue);
|
||||
}
|
||||
|
||||
hydrate(): void {
|
||||
var p = this.protoStrategy;
|
||||
for (var i = 0; i < p.keyIds.length; i++) {
|
||||
if (isPresent(p.keyIds[i]) && isBlank(this.objs[i])) {
|
||||
if (isPresent(p.keyIds[i]) && this.objs[i] === undefinedValue) {
|
||||
this.objs[i] = this.injector._new(p.bindings[i], p.visibilities[i]);
|
||||
}
|
||||
}
|
||||
|
|
@ -356,14 +367,14 @@ export class InjectorDynamicStrategy implements InjectorStrategy {
|
|||
inj._isBoundary = isBoundary;
|
||||
}
|
||||
|
||||
dehydrate(): void { ListWrapper.fill(this.objs, null); }
|
||||
dehydrate(): void { ListWrapper.fill(this.objs, undefinedValue); }
|
||||
|
||||
getObjByKeyId(keyId: number, visibility: number): any {
|
||||
var p = this.protoStrategy;
|
||||
|
||||
for (var i = 0; i < p.keyIds.length; i++) {
|
||||
if (p.keyIds[i] === keyId && (p.visibilities[i] & visibility) > 0) {
|
||||
if (isBlank(this.objs[i])) {
|
||||
if (this.objs[i] === undefinedValue) {
|
||||
this.objs[i] = this.injector._new(p.bindings[i], p.visibilities[i]);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -9,6 +9,9 @@ import {
|
|||
DependencyAnnotation,
|
||||
Injectable
|
||||
} from 'angular2/di';
|
||||
|
||||
import {InjectorInlineStrategy, InjectorDynamicStrategy} from 'angular2/src/di/injector';
|
||||
|
||||
import {Optional, Inject} from 'angular2/src/di/decorators';
|
||||
import * as ann from 'angular2/src/di/annotations_impl';
|
||||
|
||||
|
|
@ -82,196 +85,238 @@ class NoAnnotations {
|
|||
}
|
||||
|
||||
export function main() {
|
||||
describe('injector', () => {
|
||||
var dynamicBindings = [
|
||||
bind('binding0')
|
||||
.toValue(1),
|
||||
bind('binding1').toValue(1),
|
||||
bind('binding2').toValue(1),
|
||||
bind('binding3').toValue(1),
|
||||
bind('binding4').toValue(1),
|
||||
bind('binding5').toValue(1),
|
||||
bind('binding6').toValue(1),
|
||||
bind('binding7').toValue(1),
|
||||
bind('binding8').toValue(1),
|
||||
bind('binding9').toValue(1),
|
||||
bind('binding10').toValue(1)
|
||||
];
|
||||
|
||||
it('should instantiate a class without dependencies', () => {
|
||||
var injector = Injector.resolveAndCreate([Engine]);
|
||||
var engine = injector.get(Engine);
|
||||
[{strategy: 'inline', bindings: [], strategyClass: InjectorInlineStrategy},
|
||||
{
|
||||
strategy: 'dynamic',
|
||||
bindings: dynamicBindings,
|
||||
strategyClass: InjectorDynamicStrategy
|
||||
}].forEach((context) => {
|
||||
|
||||
expect(engine).toBeAnInstanceOf(Engine);
|
||||
function createInjector(bindings: any[]) {
|
||||
return Injector.resolveAndCreate(bindings.concat(context['bindings']));
|
||||
}
|
||||
|
||||
describe(`injector ${context['strategy']}`, () => {
|
||||
it("should use the right strategy", () => {
|
||||
var injector = createInjector([]);
|
||||
expect(injector.internalStrategy).toBeAnInstanceOf(context['strategyClass']);
|
||||
});
|
||||
|
||||
it('should instantiate a class without dependencies', () => {
|
||||
var injector = createInjector([Engine]);
|
||||
var engine = injector.get(Engine);
|
||||
|
||||
expect(engine).toBeAnInstanceOf(Engine);
|
||||
});
|
||||
|
||||
it('should resolve dependencies based on type information', () => {
|
||||
var injector = createInjector([Engine, Car]);
|
||||
var car = injector.get(Car);
|
||||
|
||||
expect(car).toBeAnInstanceOf(Car);
|
||||
expect(car.engine).toBeAnInstanceOf(Engine);
|
||||
});
|
||||
|
||||
it('should resolve dependencies based on @Inject annotation', () => {
|
||||
var injector = createInjector([TurboEngine, Engine, CarWithInject]);
|
||||
var car = injector.get(CarWithInject);
|
||||
|
||||
expect(car).toBeAnInstanceOf(CarWithInject);
|
||||
expect(car.engine).toBeAnInstanceOf(TurboEngine);
|
||||
});
|
||||
|
||||
it('should throw when no type and not @Inject', () => {
|
||||
expect(() => createInjector([NoAnnotations]))
|
||||
.toThrowError('Cannot resolve all parameters for NoAnnotations(?). ' +
|
||||
'Make sure they all have valid type or annotations.');
|
||||
});
|
||||
|
||||
it('should cache instances', () => {
|
||||
var injector = createInjector([Engine]);
|
||||
|
||||
var e1 = injector.get(Engine);
|
||||
var e2 = injector.get(Engine);
|
||||
|
||||
expect(e1).toBe(e2);
|
||||
});
|
||||
|
||||
it('should bind to a value', () => {
|
||||
var injector = createInjector([bind(Engine).toValue("fake engine")]);
|
||||
|
||||
var engine = injector.get(Engine);
|
||||
expect(engine).toEqual("fake engine");
|
||||
});
|
||||
|
||||
it('should bind to a factory', () => {
|
||||
function sportsCarFactory(e) { return new SportsCar(e); }
|
||||
|
||||
var injector = createInjector([Engine, bind(Car).toFactory(sportsCarFactory, [Engine])]);
|
||||
|
||||
var car = injector.get(Car);
|
||||
expect(car).toBeAnInstanceOf(SportsCar);
|
||||
expect(car.engine).toBeAnInstanceOf(Engine);
|
||||
});
|
||||
|
||||
it('should supporting binding to null', () => {
|
||||
var injector = createInjector([bind(Engine).toValue(null)]);
|
||||
|
||||
for (var i = 0; i < 20; ++i) {
|
||||
injector.get(Engine);
|
||||
}
|
||||
|
||||
var engine = injector.get(Engine);
|
||||
expect(engine).toBeNull();
|
||||
});
|
||||
|
||||
it('should bind to an alias', () => {
|
||||
var injector = createInjector(
|
||||
[Engine, bind(SportsCar).toClass(SportsCar), bind(Car).toAlias(SportsCar)]);
|
||||
|
||||
var car = injector.get(Car);
|
||||
var sportsCar = injector.get(SportsCar);
|
||||
expect(car).toBeAnInstanceOf(SportsCar);
|
||||
expect(car).toBe(sportsCar);
|
||||
});
|
||||
|
||||
it('should throw when the aliased binding does not exist', () => {
|
||||
var injector = createInjector([bind('car').toAlias(SportsCar)]);
|
||||
var e = `No provider for ${stringify(SportsCar)}! (car -> ${stringify(SportsCar)})`;
|
||||
expect(() => injector.get('car')).toThrowError(e);
|
||||
});
|
||||
|
||||
it('should throw with a meaningful message when the aliased binding is blank', () => {
|
||||
expect(() => bind('car').toAlias(null)).toThrowError('Can not alias car to a blank value!');
|
||||
});
|
||||
|
||||
it('should handle forwardRef in toAlias', () => {
|
||||
var injector = createInjector([
|
||||
bind('originalEngine')
|
||||
.toClass(forwardRef(() => Engine)),
|
||||
bind('aliasedEngine').toAlias(forwardRef(() => 'originalEngine'))
|
||||
]);
|
||||
expect(injector.get('aliasedEngine')).toBeAnInstanceOf(Engine);
|
||||
});
|
||||
|
||||
it('should support overriding factory dependencies', () => {
|
||||
var injector =
|
||||
createInjector([Engine, bind(Car).toFactory((e) => new SportsCar(e), [Engine])]);
|
||||
|
||||
var car = injector.get(Car);
|
||||
expect(car).toBeAnInstanceOf(SportsCar);
|
||||
expect(car.engine).toBeAnInstanceOf(Engine);
|
||||
});
|
||||
|
||||
it('should support optional dependencies', () => {
|
||||
var injector = createInjector([CarWithOptionalEngine]);
|
||||
|
||||
var car = injector.get(CarWithOptionalEngine);
|
||||
expect(car.engine).toEqual(null);
|
||||
});
|
||||
|
||||
it("should flatten passed-in bindings", () => {
|
||||
var injector = createInjector([[[Engine, Car]]]);
|
||||
|
||||
var car = injector.get(Car);
|
||||
expect(car).toBeAnInstanceOf(Car);
|
||||
});
|
||||
|
||||
it("should use the last binding when there are multiple bindings for same token", () => {
|
||||
var injector =
|
||||
createInjector([bind(Engine).toClass(Engine), bind(Engine).toClass(TurboEngine)]);
|
||||
|
||||
expect(injector.get(Engine)).toBeAnInstanceOf(TurboEngine);
|
||||
});
|
||||
|
||||
it('should use non-type tokens', () => {
|
||||
var injector = createInjector([bind('token').toValue('value')]);
|
||||
|
||||
expect(injector.get('token')).toEqual('value');
|
||||
});
|
||||
|
||||
it('should throw when given invalid bindings', () => {
|
||||
expect(() => createInjector(<any>["blah"]))
|
||||
.toThrowError(
|
||||
'Invalid binding - only instances of Binding and Type are allowed, got: blah');
|
||||
expect(() => createInjector(<any>[bind("blah")]))
|
||||
.toThrowError('Invalid binding - only instances of Binding and Type are allowed, ' +
|
||||
'got: blah');
|
||||
});
|
||||
|
||||
it('should provide itself', () => {
|
||||
var parent = createInjector([]);
|
||||
var child = parent.resolveAndCreateChild([]);
|
||||
|
||||
expect(child.get(Injector)).toBe(child);
|
||||
});
|
||||
|
||||
it('should throw when no provider defined', () => {
|
||||
var injector = createInjector([]);
|
||||
expect(() => injector.get('NonExisting')).toThrowError('No provider for NonExisting!');
|
||||
});
|
||||
|
||||
it('should show the full path when no provider', () => {
|
||||
var injector = createInjector([CarWithDashboard, Engine, Dashboard]);
|
||||
expect(() => injector.get(CarWithDashboard))
|
||||
.toThrowError(
|
||||
`No provider for DashboardSoftware! (${stringify(CarWithDashboard)} -> ${stringify(Dashboard)} -> DashboardSoftware)`);
|
||||
});
|
||||
|
||||
it('should throw when trying to instantiate a cyclic dependency', () => {
|
||||
var injector = createInjector([Car, bind(Engine).toClass(CyclicEngine)]);
|
||||
|
||||
expect(() => injector.get(Car))
|
||||
.toThrowError(
|
||||
`Cannot instantiate cyclic dependency! (${stringify(Car)} -> ${stringify(Engine)} -> ${stringify(Car)})`);
|
||||
});
|
||||
|
||||
it('should show the full path when error happens in a constructor', () => {
|
||||
var injector = createInjector([Car, bind(Engine).toClass(BrokenEngine)]);
|
||||
|
||||
try {
|
||||
injector.get(Car);
|
||||
throw "Must throw";
|
||||
} catch (e) {
|
||||
expect(e.message)
|
||||
.toContain(`Error during instantiation of Engine! (${stringify(Car)} -> Engine)`);
|
||||
expect(e.originalException instanceof BaseException).toBeTruthy();
|
||||
expect(e.causeKey.token).toEqual(Engine);
|
||||
}
|
||||
});
|
||||
|
||||
it('should instantiate an object after a failed attempt', () => {
|
||||
var isBroken = true;
|
||||
|
||||
var injector = createInjector(
|
||||
[Car, bind(Engine).toFactory(() => isBroken ? new BrokenEngine() : new Engine())]);
|
||||
|
||||
expect(() => injector.get(Car)).toThrowError(new RegExp("Error"));
|
||||
|
||||
isBroken = false;
|
||||
|
||||
expect(injector.get(Car)).toBeAnInstanceOf(Car);
|
||||
});
|
||||
|
||||
it('should support null values', () => {
|
||||
var injector = createInjector([bind('null').toValue(null)]);
|
||||
expect(injector.get('null')).toBe(null);
|
||||
});
|
||||
});
|
||||
|
||||
it('should resolve dependencies based on type information', () => {
|
||||
var injector = Injector.resolveAndCreate([Engine, Car]);
|
||||
var car = injector.get(Car);
|
||||
|
||||
expect(car).toBeAnInstanceOf(Car);
|
||||
expect(car.engine).toBeAnInstanceOf(Engine);
|
||||
});
|
||||
|
||||
it('should resolve dependencies based on @Inject annotation', () => {
|
||||
var injector = Injector.resolveAndCreate([TurboEngine, Engine, CarWithInject]);
|
||||
var car = injector.get(CarWithInject);
|
||||
|
||||
expect(car).toBeAnInstanceOf(CarWithInject);
|
||||
expect(car.engine).toBeAnInstanceOf(TurboEngine);
|
||||
});
|
||||
|
||||
it('should throw when no type and not @Inject', () => {
|
||||
expect(() => Injector.resolveAndCreate([NoAnnotations]))
|
||||
.toThrowError('Cannot resolve all parameters for NoAnnotations(?). ' +
|
||||
'Make sure they all have valid type or annotations.');
|
||||
});
|
||||
|
||||
it('should cache instances', () => {
|
||||
var injector = Injector.resolveAndCreate([Engine]);
|
||||
|
||||
var e1 = injector.get(Engine);
|
||||
var e2 = injector.get(Engine);
|
||||
|
||||
expect(e1).toBe(e2);
|
||||
});
|
||||
|
||||
it('should bind to a value', () => {
|
||||
var injector = Injector.resolveAndCreate([bind(Engine).toValue("fake engine")]);
|
||||
|
||||
var engine = injector.get(Engine);
|
||||
expect(engine).toEqual("fake engine");
|
||||
});
|
||||
|
||||
it('should bind to a factory', () => {
|
||||
function sportsCarFactory(e) { return new SportsCar(e); }
|
||||
|
||||
var injector =
|
||||
Injector.resolveAndCreate([Engine, bind(Car).toFactory(sportsCarFactory, [Engine])]);
|
||||
|
||||
var car = injector.get(Car);
|
||||
expect(car).toBeAnInstanceOf(SportsCar);
|
||||
expect(car.engine).toBeAnInstanceOf(Engine);
|
||||
});
|
||||
|
||||
it('should bind to an alias', () => {
|
||||
var injector = Injector.resolveAndCreate(
|
||||
[Engine, bind(SportsCar).toClass(SportsCar), bind(Car).toAlias(SportsCar)]);
|
||||
|
||||
var car = injector.get(Car);
|
||||
var sportsCar = injector.get(SportsCar);
|
||||
expect(car).toBeAnInstanceOf(SportsCar);
|
||||
expect(car).toBe(sportsCar);
|
||||
});
|
||||
|
||||
it('should throw when the aliased binding does not exist', () => {
|
||||
var injector = Injector.resolveAndCreate([bind('car').toAlias(SportsCar)]);
|
||||
var e = `No provider for ${stringify(SportsCar)}! (car -> ${stringify(SportsCar)})`;
|
||||
expect(() => injector.get('car')).toThrowError(e);
|
||||
});
|
||||
|
||||
it('should throw with a meaningful message when the aliased binding is blank', () => {
|
||||
expect(() => bind('car').toAlias(null)).toThrowError('Can not alias car to a blank value!');
|
||||
});
|
||||
|
||||
it('should handle forwardRef in toAlias', () => {
|
||||
var injector = Injector.resolveAndCreate([
|
||||
bind('originalEngine')
|
||||
.toClass(forwardRef(() => Engine)),
|
||||
bind('aliasedEngine').toAlias(forwardRef(() => 'originalEngine'))
|
||||
]);
|
||||
expect(injector.get('aliasedEngine')).toBeAnInstanceOf(Engine);
|
||||
});
|
||||
|
||||
it('should support overriding factory dependencies', () => {
|
||||
var injector = Injector.resolveAndCreate(
|
||||
[Engine, bind(Car).toFactory((e) => new SportsCar(e), [Engine])]);
|
||||
|
||||
var car = injector.get(Car);
|
||||
expect(car).toBeAnInstanceOf(SportsCar);
|
||||
expect(car.engine).toBeAnInstanceOf(Engine);
|
||||
});
|
||||
|
||||
it('should support optional dependencies', () => {
|
||||
var injector = Injector.resolveAndCreate([CarWithOptionalEngine]);
|
||||
|
||||
var car = injector.get(CarWithOptionalEngine);
|
||||
expect(car.engine).toEqual(null);
|
||||
});
|
||||
|
||||
it("should flatten passed-in bindings", () => {
|
||||
var injector = Injector.resolveAndCreate([[[Engine, Car]]]);
|
||||
|
||||
var car = injector.get(Car);
|
||||
expect(car).toBeAnInstanceOf(Car);
|
||||
});
|
||||
|
||||
it("should use the last binding when there are multiple bindings for same token", () => {
|
||||
var injector = Injector.resolveAndCreate(
|
||||
[bind(Engine).toClass(Engine), bind(Engine).toClass(TurboEngine)]);
|
||||
|
||||
expect(injector.get(Engine)).toBeAnInstanceOf(TurboEngine);
|
||||
});
|
||||
|
||||
it('should use non-type tokens', () => {
|
||||
var injector = Injector.resolveAndCreate([bind('token').toValue('value')]);
|
||||
|
||||
expect(injector.get('token')).toEqual('value');
|
||||
});
|
||||
|
||||
it('should throw when given invalid bindings', () => {
|
||||
expect(() => Injector.resolveAndCreate(<any>["blah"]))
|
||||
.toThrowError(
|
||||
'Invalid binding - only instances of Binding and Type are allowed, got: blah');
|
||||
expect(() => Injector.resolveAndCreate(<any>[bind("blah")]))
|
||||
.toThrowError('Invalid binding - only instances of Binding and Type are allowed, ' +
|
||||
'got: blah');
|
||||
});
|
||||
|
||||
it('should provide itself', () => {
|
||||
var parent = Injector.resolveAndCreate([]);
|
||||
var child = parent.resolveAndCreateChild([]);
|
||||
|
||||
expect(child.get(Injector)).toBe(child);
|
||||
});
|
||||
|
||||
it('should throw when no provider defined', () => {
|
||||
var injector = Injector.resolveAndCreate([]);
|
||||
expect(() => injector.get('NonExisting')).toThrowError('No provider for NonExisting!');
|
||||
});
|
||||
|
||||
it('should show the full path when no provider', () => {
|
||||
var injector = Injector.resolveAndCreate([CarWithDashboard, Engine, Dashboard]);
|
||||
expect(() => injector.get(CarWithDashboard))
|
||||
.toThrowError(
|
||||
`No provider for DashboardSoftware! (${stringify(CarWithDashboard)} -> ${stringify(Dashboard)} -> DashboardSoftware)`);
|
||||
});
|
||||
|
||||
it('should throw when trying to instantiate a cyclic dependency', () => {
|
||||
var injector = Injector.resolveAndCreate([Car, bind(Engine).toClass(CyclicEngine)]);
|
||||
|
||||
expect(() => injector.get(Car))
|
||||
.toThrowError(
|
||||
`Cannot instantiate cyclic dependency! (${stringify(Car)} -> ${stringify(Engine)} -> ${stringify(Car)})`);
|
||||
});
|
||||
|
||||
it('should show the full path when error happens in a constructor', () => {
|
||||
var injector = Injector.resolveAndCreate([Car, bind(Engine).toClass(BrokenEngine)]);
|
||||
|
||||
try {
|
||||
injector.get(Car);
|
||||
throw "Must throw";
|
||||
} catch (e) {
|
||||
expect(e.message)
|
||||
.toContain(`Error during instantiation of Engine! (${stringify(Car)} -> Engine)`);
|
||||
expect(e.originalException instanceof BaseException).toBeTruthy();
|
||||
expect(e.causeKey.token).toEqual(Engine);
|
||||
}
|
||||
});
|
||||
|
||||
it('should instantiate an object after a failed attempt', () => {
|
||||
var isBroken = true;
|
||||
|
||||
var injector = Injector.resolveAndCreate(
|
||||
[Car, bind(Engine).toFactory(() => isBroken ? new BrokenEngine() : new Engine())]);
|
||||
|
||||
expect(() => injector.get(Car)).toThrowError(new RegExp("Error"));
|
||||
|
||||
isBroken = false;
|
||||
|
||||
expect(injector.get(Car)).toBeAnInstanceOf(Car);
|
||||
});
|
||||
|
||||
it('should support null values', () => {
|
||||
var injector = Injector.resolveAndCreate([bind('null').toValue(null)]);
|
||||
expect(injector.get('null')).toBe(null);
|
||||
});
|
||||
|
||||
describe("child", () => {
|
||||
it('should load instances from parent injector', () => {
|
||||
|
|
|
|||
Loading…
Reference in New Issue