Add Extension tests (#2125)

* Add test for extension hooks
Add afterConfigureGraph callback

* fix comment

tests-ui/tests/extensions.test.js

+// @ts-check
+/// <reference path="../node_modules/@types/jest/index.d.ts" />
+const { start } = require("../utils");
+const lg = require("../utils/litegraph");
+
+describe("extensions", () => {
+	beforeEach(() => {
+		lg.setup(global);
+	});
+
+	afterEach(() => {
+		lg.teardown(global);
+	});
+
+	it("calls each extension hook", async () => {
+		const mockExtension = {
+			name: "TestExtension",
+			init: jest.fn(),
+			setup: jest.fn(),
+			addCustomNodeDefs: jest.fn(),
+			getCustomWidgets: jest.fn(),
+			beforeRegisterNodeDef: jest.fn(),
+			registerCustomNodes: jest.fn(),
+			loadedGraphNode: jest.fn(),
+			nodeCreated: jest.fn(),
+			beforeConfigureGraph: jest.fn(),
+			afterConfigureGraph: jest.fn(),
+		};
+
+		const { app, ez, graph } = await start({
+			async preSetup(app) {
+				app.registerExtension(mockExtension);
+			},
+		});
+
+		// Basic initialisation hooks should be called once, with app
+		expect(mockExtension.init).toHaveBeenCalledTimes(1);
+		expect(mockExtension.init).toHaveBeenCalledWith(app);
+
+		// Adding custom node defs should be passed the full list of nodes
+		expect(mockExtension.addCustomNodeDefs).toHaveBeenCalledTimes(1);
+		expect(mockExtension.addCustomNodeDefs.mock.calls[0][1]).toStrictEqual(app);
+		const defs = mockExtension.addCustomNodeDefs.mock.calls[0][0];
+		expect(defs).toHaveProperty("KSampler");
+		expect(defs).toHaveProperty("LoadImage");
+
+		// Get custom widgets is called once and should return new widget types
+		expect(mockExtension.getCustomWidgets).toHaveBeenCalledTimes(1);
+		expect(mockExtension.getCustomWidgets).toHaveBeenCalledWith(app);
+
+		// Before register node def will be called once per node type
+		const nodeNames = Object.keys(defs);
+		const nodeCount = nodeNames.length;
+		expect(mockExtension.beforeRegisterNodeDef).toHaveBeenCalledTimes(nodeCount);
+		for (let i = 0; i < nodeCount; i++) {
+			// It should be send the JS class and the original JSON definition
+			const nodeClass = mockExtension.beforeRegisterNodeDef.mock.calls[i][0];
+			const nodeDef = mockExtension.beforeRegisterNodeDef.mock.calls[i][1];
+
+			expect(nodeClass.name).toBe("ComfyNode");
+			expect(nodeClass.comfyClass).toBe(nodeNames[i]);
+			expect(nodeDef.name).toBe(nodeNames[i]);
+			expect(nodeDef).toHaveProperty("input");
+			expect(nodeDef).toHaveProperty("output");
+		}
+
+		// Register custom nodes is called once after registerNode defs to allow adding other frontend nodes
+		expect(mockExtension.registerCustomNodes).toHaveBeenCalledTimes(1);
+
+		// Before configure graph will be called here as the default graph is being loaded
+		expect(mockExtension.beforeConfigureGraph).toHaveBeenCalledTimes(1);
+		// it gets sent the graph data that is going to be loaded
+		const graphData = mockExtension.beforeConfigureGraph.mock.calls[0][0];
+
+		// A node created is fired for each node constructor that is called
+		expect(mockExtension.nodeCreated).toHaveBeenCalledTimes(graphData.nodes.length);
+		for (let i = 0; i < graphData.nodes.length; i++) {
+			expect(mockExtension.nodeCreated.mock.calls[i][0].type).toBe(graphData.nodes[i].type);
+		}
+
+		// Each node then calls loadedGraphNode to allow them to be updated
+		expect(mockExtension.loadedGraphNode).toHaveBeenCalledTimes(graphData.nodes.length);
+		for (let i = 0; i < graphData.nodes.length; i++) {
+			expect(mockExtension.loadedGraphNode.mock.calls[i][0].type).toBe(graphData.nodes[i].type);
+		}
+
+		// After configure is then called once all the setup is done
+		expect(mockExtension.afterConfigureGraph).toHaveBeenCalledTimes(1);
+
+		expect(mockExtension.setup).toHaveBeenCalledTimes(1);
+		expect(mockExtension.setup).toHaveBeenCalledWith(app);
+
+		// Ensure hooks are called in the correct order
+		const callOrder = [
+			"init",
+			"addCustomNodeDefs",
+			"getCustomWidgets",
+			"beforeRegisterNodeDef",
+			"registerCustomNodes",
+			"beforeConfigureGraph",
+			"nodeCreated",
+			"loadedGraphNode",
+			"afterConfigureGraph",
+			"setup",
+		];
+		for (let i = 1; i < callOrder.length; i++) {
+			const fn1 = mockExtension[callOrder[i - 1]];
+			const fn2 = mockExtension[callOrder[i]];
+			expect(fn1.mock.invocationCallOrder[0]).toBeLessThan(fn2.mock.invocationCallOrder[0]);
+		}
+
+		graph.clear();
+
+		// Ensure adding a new node calls the correct callback
+		ez.LoadImage();
+		expect(mockExtension.loadedGraphNode).toHaveBeenCalledTimes(graphData.nodes.length);
+		expect(mockExtension.nodeCreated).toHaveBeenCalledTimes(graphData.nodes.length + 1);
+		expect(mockExtension.nodeCreated.mock.lastCall[0].type).toBe("LoadImage");
+
+		// Reload the graph to ensure correct hooks are fired
+		await graph.reload();
+
+		// These hooks should not be fired again
+		expect(mockExtension.init).toHaveBeenCalledTimes(1);
+		expect(mockExtension.addCustomNodeDefs).toHaveBeenCalledTimes(1);
+		expect(mockExtension.getCustomWidgets).toHaveBeenCalledTimes(1);
+		expect(mockExtension.registerCustomNodes).toHaveBeenCalledTimes(1);
+		expect(mockExtension.beforeRegisterNodeDef).toHaveBeenCalledTimes(nodeCount);
+		expect(mockExtension.setup).toHaveBeenCalledTimes(1);
+
+		// These should be called again
+		expect(mockExtension.beforeConfigureGraph).toHaveBeenCalledTimes(2);
+		expect(mockExtension.nodeCreated).toHaveBeenCalledTimes(graphData.nodes.length + 2);
+		expect(mockExtension.loadedGraphNode).toHaveBeenCalledTimes(graphData.nodes.length + 1);
+		expect(mockExtension.afterConfigureGraph).toHaveBeenCalledTimes(2);
+	});
+
+	it("allows custom nodeDefs and widgets to be registered", async () => {
+		const widgetMock = jest.fn((node, inputName, inputData, app) => {
+			expect(node.constructor.comfyClass).toBe("TestNode");
+			expect(inputName).toBe("test_input");
+			expect(inputData[0]).toBe("CUSTOMWIDGET");
+			expect(inputData[1]?.hello).toBe("world");
+			expect(app).toStrictEqual(app);
+
+			return {
+				widget: node.addWidget("button", inputName, "hello", () => {}),
+			};
+		});
+
+		// Register our extension that adds a custom node + widget type
+		const mockExtension = {
+			name: "TestExtension",
+			addCustomNodeDefs: (nodeDefs) => {
+				nodeDefs["TestNode"] = {
+					output: [],
+					output_name: [],
+					output_is_list: [],
+					name: "TestNode",
+					display_name: "TestNode",
+					category: "Test",
+					input: {
+						required: {
+							test_input: ["CUSTOMWIDGET", { hello: "world" }],
+						},
+					},
+				};
+			},
+			getCustomWidgets: jest.fn(() => {
+				return {
+					CUSTOMWIDGET: widgetMock,
+				};
+			}),
+		};
+
+		const { graph, ez } = await start({
+			async preSetup(app) {
+				app.registerExtension(mockExtension);
+			},
+		});
+
+		expect(mockExtension.getCustomWidgets).toBeCalledTimes(1);
+
+		graph.clear();
+		expect(widgetMock).toBeCalledTimes(0);
+		const node = ez.TestNode();
+		expect(widgetMock).toBeCalledTimes(1);
+
+		// Ensure our custom widget is created
+		expect(node.inputs.length).toBe(0);
+		expect(node.widgets.length).toBe(1);
+		const w = node.widgets[0].widget;
+		expect(w.name).toBe("test_input");
+		expect(w.type).toBe("button");
+	});
+});

tests-ui/utils/index.js

@@ -4,11 +4,11 @@ const lg = require("./litegraph");
 
 /**
  *
- * @param { Parameters<mockApi>[0] & { resetEnv?: boolean } } config
+ * @param { Parameters<mockApi>[0] & { resetEnv?: boolean, preSetup?(app): Promise<void> } } config
  * @returns
  */
-export async function start(config = undefined) {
-	if(config?.resetEnv) {
+export async function start(config = {}) {
+	if(config.resetEnv) {
 		jest.resetModules();
 		jest.resetAllMocks();
         lg.setup(global);
@@ -16,6 +16,7 @@ export async function start(config = undefined) {
 
 	mockApi(config);
 	const { app } = require("../../web/scripts/app");
+	config.preSetup?.(app);
 	await app.setup();
 	return { ...Ez.graph(app, global["LiteGraph"], global["LGraphCanvas"]), app };
 }

web/scripts/app.js

@@ -1654,6 +1654,7 @@ export class ComfyApp {
 		if (missingNodeTypes.length) {
 			this.showMissingNodesError(missingNodeTypes);
 		}
+		await this.#invokeExtensionsAsync("afterConfigureGraph", missingNodeTypes);
 	}
 
 	/**