@zendesk/laika
Version:
Test, mock, intercept and modify Apollo Client's operations — in both browser and unit tests!
73 lines • 3.84 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const graphql_tag_1 = __importDefault(require("graphql-tag"));
const wait_for_observables_1 = __importDefault(require("wait-for-observables"));
const core_1 = require("@apollo/client/core");
const createLazyLoadableLink_1 = require("./createLazyLoadableLink");
const testUtils_1 = require("./testUtils");
const query = (0, graphql_tag_1.default) `
query helloQuery {
sample {
id
}
}
`;
const subscription = (0, graphql_tag_1.default) `
subscription helloSubscription {
sample {
id
}
}
`;
const data = { data: { hello: 'world' } };
describe('createLazyLoadableLink', () => {
it('returns passthrough data from the following link', () => __awaiter(void 0, void 0, void 0, function* () {
const link = (0, createLazyLoadableLink_1.createLazyLoadableLink)(Promise.resolve(new core_1.ApolloLink(() => (0, testUtils_1.observableOf)(data))));
const [result] = (yield (0, wait_for_observables_1.default)((0, testUtils_1.executeLink)(link, { query })));
const { values } = result;
expect(values).toEqual([data]);
}));
it('correctly emits subsequent values from the following link and completes the returned Observable when the Observable returned from the lazily loaded link completes', () => __awaiter(void 0, void 0, void 0, function* () {
let observer;
const link = (0, createLazyLoadableLink_1.createLazyLoadableLink)(Promise.resolve(new core_1.ApolloLink(() => new core_1.Observable((obs) => {
observer = obs;
}))));
const outerObserver = {
next: jest.fn(),
complete: jest.fn(),
error: jest.fn(),
};
const sub = (0, testUtils_1.executeLink)(link, { query: subscription }).subscribe(outerObserver);
expect.assertions(9);
yield (0, testUtils_1.onNextTick)(() => {
var _a, _b, _c;
const activeObserver = observer;
(_a = activeObserver.next) === null || _a === void 0 ? void 0 : _a.call(activeObserver, 1);
expect(outerObserver.next).toHaveBeenCalledTimes(1);
expect(outerObserver.next).toHaveBeenLastCalledWith(1);
expect(outerObserver.complete).not.toHaveBeenCalled();
(_b = activeObserver.next) === null || _b === void 0 ? void 0 : _b.call(activeObserver, 2);
expect(outerObserver.next).toHaveBeenCalledTimes(2);
expect(outerObserver.next).toHaveBeenLastCalledWith(2);
expect(outerObserver.complete).not.toHaveBeenCalled();
(_c = activeObserver.complete) === null || _c === void 0 ? void 0 : _c.call(activeObserver);
expect(outerObserver.complete).toHaveBeenCalledTimes(1);
expect(outerObserver.next).toHaveBeenLastCalledWith(2);
expect(outerObserver.error).not.toHaveBeenCalled();
sub.unsubscribe();
});
}));
});
//# sourceMappingURL=createLazyLoadableLink.test.js.map