reflect-getmetadatakeys.ts
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// 4.1.8 Reflect.getMetadataKeys ( target [, propertyKey] )
// https://rbuckton.github.io/reflect-metadata/#reflect.getmetadatakeys
import "../Reflect";
import { assert } from "chai";
describe("Reflect.getMetadataKeys", () => {
it("KeysInvalidTarget", () => {
// 1. If Type(target) is not Object, throw a TypeError exception.
assert.throws(() => Reflect.getMetadataKeys(undefined, undefined), TypeError);
});
it("KeysWithoutTargetKeyWhenNotDefined", () => {
let obj = {};
let result = Reflect.getMetadataKeys(obj, undefined);
assert.deepEqual(result, []);
});
it("KeysWithoutTargetKeyWhenDefined", () => {
let obj = {};
Reflect.defineMetadata("key", "value", obj, undefined);
let result = Reflect.getMetadataKeys(obj, undefined);
assert.deepEqual(result, ["key"]);
});
it("KeysWithoutTargetKeyWhenDefinedOnPrototype", () => {
let prototype = {};
let obj = Object.create(prototype);
Reflect.defineMetadata("key", "value", prototype, undefined);
let result = Reflect.getMetadataKeys(obj, undefined);
assert.deepEqual(result, ["key"]);
});
it("KeysOrderWithoutTargetKey", () => {
let obj = {};
Reflect.defineMetadata("key1", "value", obj, undefined);
Reflect.defineMetadata("key0", "value", obj, undefined);
let result = Reflect.getMetadataKeys(obj, undefined);
assert.deepEqual(result, ["key1", "key0"]);
});
it("KeysOrderAfterRedefineWithoutTargetKey", () => {
let obj = {};
Reflect.defineMetadata("key1", "value", obj, undefined);
Reflect.defineMetadata("key0", "value", obj, undefined);
Reflect.defineMetadata("key1", "value", obj, undefined);
let result = Reflect.getMetadataKeys(obj, undefined);
assert.deepEqual(result, ["key1", "key0"]);
});
it("KeysOrderWithoutTargetKeyWhenDefinedOnPrototype", () => {
let prototype = {};
Reflect.defineMetadata("key2", "value", prototype, undefined);
let obj = Object.create(prototype);
Reflect.defineMetadata("key1", "value", obj, undefined);
Reflect.defineMetadata("key0", "value", obj, undefined);
let result = Reflect.getMetadataKeys(obj, undefined);
assert.deepEqual(result, ["key1", "key0", "key2"]);
});
it("KeysWithTargetKeyWhenNotDefined", () => {
let obj = {};
let result = Reflect.getMetadataKeys(obj, "name");
assert.deepEqual(result, []);
});
it("KeysWithTargetKeyWhenDefined", () => {
let obj = {};
Reflect.defineMetadata("key", "value", obj, "name");
let result = Reflect.getMetadataKeys(obj, "name");
assert.deepEqual(result, ["key"]);
});
it("KeysWithTargetKeyWhenDefinedOnPrototype", () => {
let prototype = {};
let obj = Object.create(prototype);
Reflect.defineMetadata("key", "value", prototype, "name");
let result = Reflect.getMetadataKeys(obj, "name");
assert.deepEqual(result, ["key"]);
});
it("KeysOrderAfterRedefineWithTargetKey", () => {
let obj = {};
Reflect.defineMetadata("key1", "value", obj, "name");
Reflect.defineMetadata("key0", "value", obj, "name");
Reflect.defineMetadata("key1", "value", obj, "name");
let result = Reflect.getMetadataKeys(obj, "name");
assert.deepEqual(result, ["key1", "key0"]);
});
it("KeysOrderWithTargetKeyWhenDefinedOnPrototype", () => {
let prototype = {};
Reflect.defineMetadata("key2", "value", prototype, "name");
let obj = Object.create(prototype);
Reflect.defineMetadata("key1", "value", obj, "name");
Reflect.defineMetadata("key0", "value", obj, "name");
let result = Reflect.getMetadataKeys(obj, "name");
assert.deepEqual(result, ["key1", "key0", "key2"]);
});
});