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| 1 | +import { render, screen, fireEvent } from "@testing-library/react"; |
| 2 | +import "@testing-library/jest-dom"; |
| 3 | +import { ListValue, ObjectItem, ListAttributeValue } from "mendix"; |
| 4 | +import { createElement } from "react"; |
| 5 | +import { TreeNodeContainerProps } from "../../../../typings/TreeNodeProps"; |
| 6 | +import { TreeNodeV2 } from "../TreeNode"; |
| 7 | + |
| 8 | +describe("TreeNodeV2 - Keyboard Navigation", () => { |
| 9 | + const mockItem = (id: string, name: string): ObjectItem => ({ |
| 10 | + id |
| 11 | + }); |
| 12 | + |
| 13 | + const createMockListValue = (items: ObjectItem[]): ListValue => ({ |
| 14 | + status: "available" as const, |
| 15 | + items, |
| 16 | + limit: 10, |
| 17 | + offset: 0, |
| 18 | + hasMoreItems: false, |
| 19 | + sortOrder: [], |
| 20 | + setLimit: jest.fn(), |
| 21 | + setOffset: jest.fn(), |
| 22 | + requestTotalCount: jest.fn(), |
| 23 | + totalCount: undefined |
| 24 | + }); |
| 25 | + |
| 26 | + const createMockAttribute = (value: string): ListAttributeValue<string> => ({ |
| 27 | + get: () => ({ |
| 28 | + status: "available" as const, |
| 29 | + value, |
| 30 | + displayValue: value, |
| 31 | + readOnly: false, |
| 32 | + formatter: { |
| 33 | + format: (val: string) => val, |
| 34 | + withConfig: jest.fn().mockReturnThis() |
| 35 | + }, |
| 36 | + setValue: jest.fn(), |
| 37 | + setTextInputValue: jest.fn(), |
| 38 | + setValidator: jest.fn() |
| 39 | + }) |
| 40 | + }); |
| 41 | + |
| 42 | + const defaultProps: TreeNodeContainerProps = { |
| 43 | + name: "treeNode", |
| 44 | + class: "", |
| 45 | + tabIndex: 0, |
| 46 | + headerType: "attribute", |
| 47 | + headerCaption: createMockAttribute("Root"), |
| 48 | + items: createMockListValue([mockItem("1", "Root")]), |
| 49 | + showIcon: "right", |
| 50 | + openNodeOn: "headerClick", |
| 51 | + animate: false, |
| 52 | + animateIcon: false, |
| 53 | + startExpanded: false |
| 54 | + }; |
| 55 | + |
| 56 | + it("expands node when Enter key is pressed", () => { |
| 57 | + const items = [mockItem("1", "Parent")]; |
| 58 | + const props: TreeNodeContainerProps = { |
| 59 | + ...defaultProps, |
| 60 | + items: createMockListValue(items), |
| 61 | + headerCaption: createMockAttribute("Parent") |
| 62 | + }; |
| 63 | + |
| 64 | + render(createElement(TreeNodeV2, props)); |
| 65 | + const treeItem = screen.getByRole("treeitem"); |
| 66 | + |
| 67 | + expect(treeItem).toHaveAttribute("aria-expanded", "false"); |
| 68 | + |
| 69 | + fireEvent.keyDown(treeItem, { key: "Enter" }); |
| 70 | + |
| 71 | + expect(treeItem).toHaveAttribute("aria-expanded", "true"); |
| 72 | + }); |
| 73 | + |
| 74 | + it("expands node when Space key is pressed", () => { |
| 75 | + const items = [mockItem("1", "Parent")]; |
| 76 | + const props: TreeNodeContainerProps = { |
| 77 | + ...defaultProps, |
| 78 | + items: createMockListValue(items), |
| 79 | + headerCaption: createMockAttribute("Parent") |
| 80 | + }; |
| 81 | + |
| 82 | + render(createElement(TreeNodeV2, props)); |
| 83 | + const treeItem = screen.getByRole("treeitem"); |
| 84 | + |
| 85 | + expect(treeItem).toHaveAttribute("aria-expanded", "false"); |
| 86 | + |
| 87 | + fireEvent.keyDown(treeItem, { key: " " }); |
| 88 | + |
| 89 | + expect(treeItem).toHaveAttribute("aria-expanded", "true"); |
| 90 | + }); |
| 91 | + |
| 92 | + it("collapses expanded node when Enter key is pressed", () => { |
| 93 | + const items = [mockItem("1", "Parent")]; |
| 94 | + const props: TreeNodeContainerProps = { |
| 95 | + ...defaultProps, |
| 96 | + items: createMockListValue(items), |
| 97 | + headerCaption: createMockAttribute("Parent"), |
| 98 | + startExpanded: true |
| 99 | + }; |
| 100 | + |
| 101 | + render(createElement(TreeNodeV2, props)); |
| 102 | + const treeItem = screen.getByRole("treeitem"); |
| 103 | + |
| 104 | + expect(treeItem).toHaveAttribute("aria-expanded", "true"); |
| 105 | + |
| 106 | + fireEvent.keyDown(treeItem, { key: "Enter" }); |
| 107 | + |
| 108 | + expect(treeItem).toHaveAttribute("aria-expanded", "false"); |
| 109 | + }); |
| 110 | + |
| 111 | + it("expands node when ArrowRight is pressed on collapsed node", () => { |
| 112 | + const items = [mockItem("1", "Parent")]; |
| 113 | + const props: TreeNodeContainerProps = { |
| 114 | + ...defaultProps, |
| 115 | + items: createMockListValue(items), |
| 116 | + headerCaption: createMockAttribute("Parent") |
| 117 | + }; |
| 118 | + |
| 119 | + render(createElement(TreeNodeV2, props)); |
| 120 | + const treeItem = screen.getByRole("treeitem"); |
| 121 | + |
| 122 | + expect(treeItem).toHaveAttribute("aria-expanded", "false"); |
| 123 | + |
| 124 | + fireEvent.keyDown(treeItem, { key: "ArrowRight" }); |
| 125 | + |
| 126 | + expect(treeItem).toHaveAttribute("aria-expanded", "true"); |
| 127 | + }); |
| 128 | + |
| 129 | + it("collapses node when ArrowLeft is pressed on expanded node", () => { |
| 130 | + const items = [mockItem("1", "Parent")]; |
| 131 | + const props: TreeNodeContainerProps = { |
| 132 | + ...defaultProps, |
| 133 | + items: createMockListValue(items), |
| 134 | + headerCaption: createMockAttribute("Parent"), |
| 135 | + startExpanded: true |
| 136 | + }; |
| 137 | + |
| 138 | + render(createElement(TreeNodeV2, props)); |
| 139 | + const treeItem = screen.getByRole("treeitem"); |
| 140 | + |
| 141 | + expect(treeItem).toHaveAttribute("aria-expanded", "true"); |
| 142 | + |
| 143 | + fireEvent.keyDown(treeItem, { key: "ArrowLeft" }); |
| 144 | + |
| 145 | + expect(treeItem).toHaveAttribute("aria-expanded", "false"); |
| 146 | + }); |
| 147 | + |
| 148 | + it("does not respond to keyboard when node has no children", () => { |
| 149 | + const items = [mockItem("1", "Leaf")]; |
| 150 | + const props: TreeNodeContainerProps = { |
| 151 | + ...defaultProps, |
| 152 | + items: createMockListValue(items), |
| 153 | + headerCaption: createMockAttribute("Leaf") |
| 154 | + }; |
| 155 | + |
| 156 | + render(createElement(TreeNodeV2, props)); |
| 157 | + const treeItem = screen.getByRole("treeitem"); |
| 158 | + |
| 159 | + // Leaf nodes should not have aria-expanded attribute |
| 160 | + expect(treeItem).not.toHaveAttribute("aria-expanded"); |
| 161 | + |
| 162 | + // Pressing keys should not cause errors |
| 163 | + fireEvent.keyDown(treeItem, { key: "Enter" }); |
| 164 | + fireEvent.keyDown(treeItem, { key: " " }); |
| 165 | + fireEvent.keyDown(treeItem, { key: "ArrowRight" }); |
| 166 | + |
| 167 | + // Should still not have aria-expanded |
| 168 | + expect(treeItem).not.toHaveAttribute("aria-expanded"); |
| 169 | + }); |
| 170 | + |
| 171 | + it("prevents default behavior and stops propagation for handled keys", () => { |
| 172 | + const items = [mockItem("1", "Parent")]; |
| 173 | + const props: TreeNodeContainerProps = { |
| 174 | + ...defaultProps, |
| 175 | + items: createMockListValue(items), |
| 176 | + headerCaption: createMockAttribute("Parent") |
| 177 | + }; |
| 178 | + |
| 179 | + render(createElement(TreeNodeV2, props)); |
| 180 | + const treeItem = screen.getByRole("treeitem"); |
| 181 | + |
| 182 | + const event = { |
| 183 | + key: "Enter", |
| 184 | + currentTarget: treeItem, |
| 185 | + target: treeItem, |
| 186 | + preventDefault: jest.fn(), |
| 187 | + stopPropagation: jest.fn() |
| 188 | + }; |
| 189 | + |
| 190 | + fireEvent.keyDown(treeItem, event); |
| 191 | + |
| 192 | + expect(event.preventDefault).toHaveBeenCalled(); |
| 193 | + expect(event.stopPropagation).toHaveBeenCalled(); |
| 194 | + }); |
| 195 | + |
| 196 | + it("ignores keyboard events that bubble from child elements", () => { |
| 197 | + const items = [mockItem("1", "Parent")]; |
| 198 | + const props: TreeNodeContainerProps = { |
| 199 | + ...defaultProps, |
| 200 | + items: createMockListValue(items), |
| 201 | + headerCaption: createMockAttribute("Parent"), |
| 202 | + startExpanded: true |
| 203 | + }; |
| 204 | + |
| 205 | + render(createElement(TreeNodeV2, props)); |
| 206 | + const treeItems = screen.getAllByRole("treeitem"); |
| 207 | + const parentItem = treeItems[0]; |
| 208 | + |
| 209 | + // Simulate a bubbled event from a child element |
| 210 | + const childElement = document.createElement("div"); |
| 211 | + parentItem.appendChild(childElement); |
| 212 | + |
| 213 | + const event = new KeyboardEvent("keydown", { |
| 214 | + key: "Enter", |
| 215 | + bubbles: true, |
| 216 | + cancelable: true |
| 217 | + }); |
| 218 | + |
| 219 | + Object.defineProperty(event, "currentTarget", { |
| 220 | + writable: false, |
| 221 | + value: parentItem |
| 222 | + }); |
| 223 | + Object.defineProperty(event, "target", { |
| 224 | + writable: false, |
| 225 | + value: childElement |
| 226 | + }); |
| 227 | + |
| 228 | + const initialState = parentItem.getAttribute("aria-expanded"); |
| 229 | + fireEvent(childElement, event); |
| 230 | + |
| 231 | + // State should not change because event came from child |
| 232 | + expect(parentItem.getAttribute("aria-expanded")).toBe(initialState); |
| 233 | + }); |
| 234 | +}); |
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