reflect-hasmetadata.ts
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// 4.1.4 Reflect.hasMetadata ( metadataKey, target [, propertyKey] )
// https://rbuckton.github.io/reflect-metadata/#reflect.hasmetadata
import "../Reflect";
import { assert } from "chai";
describe("Reflect.hasMetadata", () => {
it("InvalidTarget", () => {
assert.throws(() => Reflect.hasMetadata("key", undefined, undefined), TypeError);
});
it("WithoutTargetKeyWhenNotDefined", () => {
let obj = {};
let result = Reflect.hasMetadata("key", obj, undefined);
assert.equal(result, false);
});
it("WithoutTargetKeyWhenDefined", () => {
let obj = {};
Reflect.defineMetadata("key", "value", obj, undefined);
let result = Reflect.hasMetadata("key", obj, undefined);
assert.equal(result, true);
});
it("WithoutTargetKeyWhenDefinedOnPrototype", () => {
let prototype = {};
let obj = Object.create(prototype);
Reflect.defineMetadata("key", "value", prototype, undefined);
let result = Reflect.hasMetadata("key", obj, undefined);
assert.equal(result, true);
});
it("WithTargetKeyWhenNotDefined", () => {
let obj = {};
let result = Reflect.hasMetadata("key", obj, "name");
assert.equal(result, false);
});
it("WithTargetKeyWhenDefined", () => {
let obj = {};
Reflect.defineMetadata("key", "value", obj, "name");
let result = Reflect.hasMetadata("key", obj, "name");
assert.equal(result, true);
});
it("WithTargetKeyWhenDefinedOnPrototype", () => {
let prototype = {};
let obj = Object.create(prototype);
Reflect.defineMetadata("key", "value", prototype, "name");
let result = Reflect.hasMetadata("key", obj, "name");
assert.equal(result, true);
});
});