Files
lemonspace_app/components/canvas/__tests__/canvas-connection-drop-target.test.tsx

411 lines
11 KiB
TypeScript

// @vitest-environment jsdom
import { afterEach, describe, expect, it, vi } from "vitest";
import type { Edge as RFEdge, Node as RFNode } from "@xyflow/react";
import { resolveDroppedConnectionTarget } from "@/components/canvas/canvas-helpers";
function createNode(overrides: Partial<RFNode> & Pick<RFNode, "id">): RFNode {
return {
position: { x: 0, y: 0 },
data: {},
...overrides,
} as RFNode;
}
function createEdge(
overrides: Partial<RFEdge> & Pick<RFEdge, "id" | "source" | "target">,
): RFEdge {
return {
...overrides,
} as RFEdge;
}
function makeNodeElement(id: string, rect: Partial<DOMRect> = {}): HTMLElement {
const element = document.createElement("div");
element.className = "react-flow__node";
element.dataset.id = id;
vi.spyOn(element, "getBoundingClientRect").mockReturnValue({
x: 0,
y: 0,
top: 0,
left: 0,
right: rect.width ?? 200,
bottom: rect.height ?? 120,
width: rect.width ?? 200,
height: rect.height ?? 120,
toJSON: () => ({}),
} as DOMRect);
return element;
}
function makeHandleElement(args: {
nodeId: string;
handleType: "source" | "target";
handleId?: string;
rect: Partial<DOMRect>;
}): HTMLElement {
const element = document.createElement("div");
element.className = "react-flow__handle";
element.dataset.nodeId = args.nodeId;
element.dataset.handleType = args.handleType;
if (args.handleId !== undefined) {
element.dataset.handleId = args.handleId;
}
vi.spyOn(element, "getBoundingClientRect").mockReturnValue({
x: args.rect.left ?? 0,
y: args.rect.top ?? 0,
top: args.rect.top ?? 0,
left: args.rect.left ?? 0,
right: args.rect.right ?? 10,
bottom: args.rect.bottom ?? 10,
width: args.rect.width ?? 10,
height: args.rect.height ?? 10,
toJSON: () => ({}),
} as DOMRect);
document.body.appendChild(element);
return element;
}
describe("resolveDroppedConnectionTarget", () => {
afterEach(() => {
vi.restoreAllMocks();
document.body.innerHTML = "";
});
it("resolves a source-start body drop into a direct connection", () => {
const sourceNode = createNode({
id: "node-source",
type: "image",
position: { x: 0, y: 0 },
});
const targetNode = createNode({
id: "node-target",
type: "text",
position: { x: 320, y: 200 },
});
const targetElement = makeNodeElement("node-target");
Object.defineProperty(document, "elementsFromPoint", {
value: vi.fn(() => [targetElement]),
configurable: true,
});
const result = resolveDroppedConnectionTarget({
point: { x: 340, y: 220 },
fromNodeId: "node-source",
fromHandleType: "source",
nodes: [sourceNode, targetNode],
edges: [],
});
expect(result).toEqual({
sourceNodeId: "node-source",
targetNodeId: "node-target",
sourceHandle: undefined,
targetHandle: undefined,
});
});
it("returns null when the pointer is over the canvas background", () => {
const sourceNode = createNode({
id: "node-source",
type: "image",
position: { x: 0, y: 0 },
});
Object.defineProperty(document, "elementsFromPoint", {
value: vi.fn(() => []),
configurable: true,
});
const result = resolveDroppedConnectionTarget({
point: { x: 10, y: 10 },
fromNodeId: "node-source",
fromHandleType: "source",
nodes: [sourceNode],
edges: [],
});
expect(result).toBeNull();
});
it("uses the free compare slot when dropping on a compare node body", () => {
const sourceNode = createNode({
id: "node-source",
type: "image",
position: { x: 0, y: 0 },
});
const compareNode = createNode({
id: "node-compare",
type: "compare",
position: { x: 320, y: 200 },
});
const compareElement = makeNodeElement("node-compare", {
width: 500,
height: 380,
});
Object.defineProperty(document, "elementsFromPoint", {
value: vi.fn(() => [compareElement]),
configurable: true,
});
const result = resolveDroppedConnectionTarget({
point: { x: 380, y: 290 },
fromNodeId: "node-source",
fromHandleType: "source",
nodes: [sourceNode, compareNode],
edges: [
createEdge({
id: "edge-left",
source: "node-source",
target: "node-compare",
targetHandle: "left",
}),
],
});
expect(result).toEqual({
sourceNodeId: "node-source",
targetNodeId: "node-compare",
sourceHandle: undefined,
targetHandle: "right",
});
});
it("resolves nearest valid target handle even without a node body hit", () => {
const sourceNode = createNode({
id: "node-source",
type: "image",
position: { x: 0, y: 0 },
});
const compareNode = createNode({
id: "node-compare",
type: "compare",
position: { x: 320, y: 200 },
});
Object.defineProperty(document, "elementsFromPoint", {
value: vi.fn(() => []),
configurable: true,
});
makeHandleElement({
nodeId: "node-compare",
handleType: "target",
handleId: "left",
rect: { left: 358, top: 252, width: 12, height: 12, right: 370, bottom: 264 },
});
makeHandleElement({
nodeId: "node-compare",
handleType: "target",
handleId: "right",
rect: { left: 438, top: 332, width: 12, height: 12, right: 450, bottom: 344 },
});
const result = resolveDroppedConnectionTarget({
point: { x: 364, y: 258 },
fromNodeId: "node-source",
fromHandleType: "source",
nodes: [sourceNode, compareNode],
edges: [],
});
expect(result).toEqual({
sourceNodeId: "node-source",
targetNodeId: "node-compare",
sourceHandle: undefined,
targetHandle: "left",
});
});
it("skips a closer invalid handle and picks the nearest valid handle", () => {
const sourceNode = createNode({
id: "node-source",
type: "image",
position: { x: 0, y: 0 },
});
const mixerNode = createNode({
id: "node-mixer",
type: "mixer",
position: { x: 320, y: 200 },
});
Object.defineProperty(document, "elementsFromPoint", {
value: vi.fn(() => []),
configurable: true,
});
makeHandleElement({
nodeId: "node-mixer",
handleType: "target",
handleId: "base",
rect: { left: 358, top: 252, width: 12, height: 12, right: 370, bottom: 264 },
});
makeHandleElement({
nodeId: "node-mixer",
handleType: "target",
handleId: "overlay",
rect: { left: 386, top: 278, width: 12, height: 12, right: 398, bottom: 290 },
});
const result = resolveDroppedConnectionTarget({
point: { x: 364, y: 258 },
fromNodeId: "node-source",
fromHandleType: "source",
nodes: [sourceNode, mixerNode],
edges: [
createEdge({
id: "edge-base-taken",
source: "node-source",
target: "node-mixer",
targetHandle: "base",
}),
],
});
expect(result).toEqual({
sourceNodeId: "node-source",
targetNodeId: "node-mixer",
sourceHandle: undefined,
targetHandle: "overlay",
});
});
it("prefers the actually nearest handle for compare and mixer targets", () => {
const sourceNode = createNode({
id: "node-source",
type: "image",
position: { x: 0, y: 0 },
});
const compareNode = createNode({
id: "node-compare",
type: "compare",
position: { x: 320, y: 200 },
});
const mixerNode = createNode({
id: "node-mixer",
type: "mixer",
position: { x: 640, y: 200 },
});
Object.defineProperty(document, "elementsFromPoint", {
value: vi.fn(() => []),
configurable: true,
});
makeHandleElement({
nodeId: "node-compare",
handleType: "target",
handleId: "left",
rect: { left: 358, top: 252, width: 12, height: 12, right: 370, bottom: 264 },
});
makeHandleElement({
nodeId: "node-compare",
handleType: "target",
handleId: "right",
rect: { left: 438, top: 332, width: 12, height: 12, right: 450, bottom: 344 },
});
makeHandleElement({
nodeId: "node-mixer",
handleType: "target",
handleId: "base",
rect: { left: 678, top: 252, width: 12, height: 12, right: 690, bottom: 264 },
});
makeHandleElement({
nodeId: "node-mixer",
handleType: "target",
handleId: "overlay",
rect: { left: 678, top: 292, width: 12, height: 12, right: 690, bottom: 304 },
});
const compareResult = resolveDroppedConnectionTarget({
point: { x: 364, y: 258 },
fromNodeId: "node-source",
fromHandleType: "source",
nodes: [sourceNode, compareNode, mixerNode],
edges: [],
});
const mixerResult = resolveDroppedConnectionTarget({
point: { x: 684, y: 299 },
fromNodeId: "node-source",
fromHandleType: "source",
nodes: [sourceNode, compareNode, mixerNode],
edges: [],
});
expect(compareResult?.targetHandle).toBe("left");
expect(mixerResult?.targetHandle).toBe("overlay");
});
it("reverses the connection when the drag starts from a target handle", () => {
const droppedNode = createNode({
id: "node-dropped",
type: "text",
position: { x: 0, y: 0 },
});
const sourceNode = createNode({
id: "node-source",
type: "image",
position: { x: 320, y: 200 },
});
const droppedElement = makeNodeElement("node-dropped");
Object.defineProperty(document, "elementsFromPoint", {
value: vi.fn(() => [droppedElement]),
configurable: true,
});
const result = resolveDroppedConnectionTarget({
point: { x: 60, y: 60 },
fromNodeId: "node-source",
fromHandleId: "target-handle",
fromHandleType: "target",
nodes: [droppedNode, sourceNode],
edges: [],
});
expect(result).toEqual({
sourceNodeId: "node-dropped",
targetNodeId: "node-source",
sourceHandle: undefined,
targetHandle: "target-handle",
});
});
it("resolves nearest source handle when drag starts from target handle", () => {
const fromNode = createNode({
id: "node-compare-target",
type: "compare",
position: { x: 0, y: 0 },
});
const compareNode = createNode({
id: "node-compare-source",
type: "compare",
position: { x: 320, y: 200 },
});
Object.defineProperty(document, "elementsFromPoint", {
value: vi.fn(() => []),
configurable: true,
});
makeHandleElement({
nodeId: "node-compare-source",
handleType: "source",
handleId: "compare-out",
rect: { left: 478, top: 288, width: 12, height: 12, right: 490, bottom: 300 },
});
const result = resolveDroppedConnectionTarget({
point: { x: 484, y: 294 },
fromNodeId: "node-compare-target",
fromHandleId: "left",
fromHandleType: "target",
nodes: [fromNode, compareNode],
edges: [],
});
expect(result).toEqual({
sourceNodeId: "node-compare-source",
targetNodeId: "node-compare-target",
sourceHandle: "compare-out",
targetHandle: "left",
});
});
});