@joist/di
Version:
Dependency Injection for Vanilla JS classes
160 lines • 7.22 kB
JavaScript
import { __esDecorate, __runInitializers } from "tslib";
import { assert } from "chai";
import { inject, injectAll } from "./inject.js";
import { injectable } from "./injectable.js";
import { Injector } from "./injector.js";
import { StaticToken } from "./provider.js";
it("should throw error if called in constructor", () => {
assert.throws(() => {
class FooService {
value = "1";
}
let BarService = (() => {
let _classDecorators = [injectable()];
let _classDescriptor;
let _classExtraInitializers = [];
let _classThis;
var BarService = class {
static { _classThis = this; }
static {
const _metadata = typeof Symbol === "function" && Symbol.metadata ? Object.create(null) : void 0;
__esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name, metadata: _metadata }, null, _classExtraInitializers);
BarService = _classThis = _classDescriptor.value;
if (_metadata) Object.defineProperty(_classThis, Symbol.metadata, { enumerable: true, configurable: true, writable: true, value: _metadata });
__runInitializers(_classThis, _classExtraInitializers);
}
foo = inject(FooService);
constructor() {
this.foo();
}
};
return BarService = _classThis;
})();
const parent = new Injector();
parent.inject(BarService);
}, "BarService is either not injectable or a service is being called in the constructor.");
});
it("should throw error if static token is unavailable", () => {
assert.throws(() => {
const TOKEN = new StaticToken("test");
const parent = new Injector();
parent.inject(TOKEN);
}, 'Provider not found for "test"');
});
it("should use the calling injector as parent", () => {
class FooService {
value = "1";
}
let BarService = (() => {
let _classDecorators = [injectable()];
let _classDescriptor;
let _classExtraInitializers = [];
let _classThis;
var BarService = class {
static { _classThis = this; }
static {
const _metadata = typeof Symbol === "function" && Symbol.metadata ? Object.create(null) : void 0;
__esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name, metadata: _metadata }, null, _classExtraInitializers);
BarService = _classThis = _classDescriptor.value;
if (_metadata) Object.defineProperty(_classThis, Symbol.metadata, { enumerable: true, configurable: true, writable: true, value: _metadata });
__runInitializers(_classThis, _classExtraInitializers);
}
foo = inject(FooService);
};
return BarService = _classThis;
})();
const parent = new Injector({
providers: [
[
FooService,
{
use: class extends FooService {
value = "100";
},
},
],
],
});
assert.strictEqual(parent.inject(BarService).foo().value, "100");
});
it("should inject a static token", () => {
const TOKEN = new StaticToken("test", () => "Hello World");
let HelloWorld = (() => {
let _classDecorators = [injectable()];
let _classDescriptor;
let _classExtraInitializers = [];
let _classThis;
var HelloWorld = class {
static { _classThis = this; }
static {
const _metadata = typeof Symbol === "function" && Symbol.metadata ? Object.create(null) : void 0;
__esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name, metadata: _metadata }, null, _classExtraInitializers);
HelloWorld = _classThis = _classDescriptor.value;
if (_metadata) Object.defineProperty(_classThis, Symbol.metadata, { enumerable: true, configurable: true, writable: true, value: _metadata });
__runInitializers(_classThis, _classExtraInitializers);
}
hello = inject(TOKEN);
};
return HelloWorld = _classThis;
})();
assert.strictEqual(new HelloWorld().hello(), "Hello World");
});
it("should use the calling injector as parent", () => {
class FooService {
value = "1";
}
let BarService = (() => {
let _classDecorators = [injectable()];
let _classDescriptor;
let _classExtraInitializers = [];
let _classThis;
var BarService = class {
static { _classThis = this; }
static {
const _metadata = typeof Symbol === "function" && Symbol.metadata ? Object.create(null) : void 0;
__esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name, metadata: _metadata }, null, _classExtraInitializers);
BarService = _classThis = _classDescriptor.value;
if (_metadata) Object.defineProperty(_classThis, Symbol.metadata, { enumerable: true, configurable: true, writable: true, value: _metadata });
__runInitializers(_classThis, _classExtraInitializers);
}
foo = inject(FooService);
};
return BarService = _classThis;
})();
const parent = new Injector({
providers: [
[
FooService,
{
use: class extends FooService {
value = "100";
},
},
],
],
});
assert.strictEqual(parent.inject(BarService).foo().value, "100");
});
it("should all you to inject all", () => {
const TOKEN = new StaticToken("test", () => "Hello World");
let HelloWorld = (() => {
let _classDecorators = [injectable()];
let _classDescriptor;
let _classExtraInitializers = [];
let _classThis;
var HelloWorld = class {
static { _classThis = this; }
static {
const _metadata = typeof Symbol === "function" && Symbol.metadata ? Object.create(null) : void 0;
__esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name, metadata: _metadata }, null, _classExtraInitializers);
HelloWorld = _classThis = _classDescriptor.value;
if (_metadata) Object.defineProperty(_classThis, Symbol.metadata, { enumerable: true, configurable: true, writable: true, value: _metadata });
__runInitializers(_classThis, _classExtraInitializers);
}
hello = injectAll(TOKEN);
};
return HelloWorld = _classThis;
})();
assert.deepEqual(new HelloWorld().hello(), ["Hello World"]);
});
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