devextreme
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JavaScript/TypeScript Component Suite for Responsive Web Development
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JavaScript
/**
* DevExtreme (esm/__internal/scheduler/utils/resource_manager/resource_manager.test.js)
* Version: 25.2.7
* Build date: Tue May 05 2026
*
* Copyright (c) 2012 - 2026 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
import {
describe,
expect,
it
} from "@jest/globals";
import {
DataSource
} from "../../../data/data_source/m_data_source";
import CustomStore from "../../../data/m_custom_store";
import {
ResourceManager
} from "./resource_manager";
const counts = {};
const getResourceConfig = index => {
counts[index] = 0;
return {
fieldExpr: index,
label: index,
dataSource: new DataSource({
store: new CustomStore({
load: () => {
counts[index] += 1;
return [{
id: 1,
text: "one"
}, {
id: 2,
text: "two"
}]
}
})
})
}
};
describe("ResourceManager", () => {
describe("loadGroupResources", () => {
it("should load dataSource only once", async () => {
const manager = new ResourceManager([getResourceConfig("one"), getResourceConfig("two")]);
await Promise.all([manager.loadGroupResources(["one"]), manager.loadGroupResources(["one", "two"]), manager.loadGroupResources(["two"])]);
await manager.loadGroupResources(["one", "two"]);
expect(counts.one).toEqual(1);
expect(counts.two).toEqual(1)
});
it("should load all dataSources in different requests", async () => {
const manager = new ResourceManager([getResourceConfig("one"), getResourceConfig("two")]);
await Promise.all([manager.loadGroupResources(["one"]), manager.loadGroupResources(["two"])]);
expect(counts.one).toEqual(1);
expect(counts.two).toEqual(1)
})
});
describe("groupCount", () => {
it("should return correct group count after grouping", async () => {
const manager = new ResourceManager([getResourceConfig("one"), getResourceConfig("two")]);
await manager.loadGroupResources(["one", "two"]);
expect(manager.groupCount()).toEqual(4)
})
});
describe("groupResources", () => {
it("should return only grouped resources", async () => {
const manager = new ResourceManager([getResourceConfig("one"), getResourceConfig("two"), getResourceConfig("three")]);
await manager.loadGroupResources(["one", "two"]);
const resources = manager.groupResources();
expect(resources.length).toBe(2);
expect(resources[0].resourceIndex).toBe("one");
expect(resources[1].resourceIndex).toBe("two");
expect(resources[0].isLoaded()).toBe(true);
expect(resources[1].isLoaded()).toBe(true)
})
})
});