mirror of
https://github.com/DayuanJiang/next-ai-draw-io.git
synced 2026-10-12 04:29:51 +08:00
dayuan.jiang
f257d8ee99
- a download button in the header opens the web app's export dialog (.drawio, .png, .svg, .drawio.svg), which the classic page had and the shell lacked when it became the default - the shell asks draw.io for the custom library menu (libraries=1), as the classic page did; the web app keeps libraries=0 - the newest card no longer shows "Rendering preview" for good: the sync takes the thumbnail of a diagram the server recovered from its file (saved without pictures) while the canvas kept it, and of a write whose picture was skipped because an edit came first, once the canvas shows the write again - e2e: the get_selection test covers a shape in a container the user entered; a download test saves a .drawio file
531 lines
21 KiB
TypeScript
531 lines
21 KiB
TypeScript
/**
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* The canvas shell as start_session opens it by default: the built server
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* (dist/index.js, or the copy MCP_SERVER_ENTRY names: CI installs the packed
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* tarball in an empty directory) runs over stdio as an MCP client would
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* start it, and headless Chromium opens the URL it returns.
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*/
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import { mkdtempSync, readFileSync, rmSync } from "node:fs"
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import { tmpdir } from "node:os"
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import { dirname, join } from "node:path"
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import { fileURLToPath } from "node:url"
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import { Client } from "@modelcontextprotocol/sdk/client/index.js"
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import { StdioClientTransport } from "@modelcontextprotocol/sdk/client/stdio.js"
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import { expect, type Page, test } from "@playwright/test"
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const pkg = join(dirname(fileURLToPath(import.meta.url)), "../..")
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let client: Client
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let dataDir: string
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let shellUrl: string
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test.beforeAll(async () => {
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dataDir = mkdtempSync(join(tmpdir(), "mcp-shell-e2e-"))
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const transport = new StdioClientTransport({
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command: process.execPath,
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args: [process.env.MCP_SERVER_ENTRY ?? join(pkg, "dist/index.js")],
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env: {
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...process.env,
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DRAWIO_DATA_DIR: dataDir,
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// Away from the web app's dev server and other test runs
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PORT: String(6100 + Math.floor(Math.random() * 400)),
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BROWSER: "none",
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},
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stderr: "pipe",
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})
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client = new Client({ name: "shell-e2e", version: "0.0.1" })
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await client.connect(transport)
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const result = await client.callTool({
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name: "start_session",
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arguments: {},
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})
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const text = (result.content as { type: string; text?: string }[])
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.map((c) => c.text ?? "")
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.join("\n")
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const match = text.match(/Browser URL: (\S+)/)
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if (!match) throw new Error(`start_session gave no URL:\n${text}`)
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shellUrl = match[1]
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})
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test.afterAll(async () => {
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await client?.close()
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rmSync(dataDir, { recursive: true, force: true })
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})
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test("start_session opens the shell, which loads the bundled draw.io", async ({
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page,
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}) => {
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expect(shellUrl).toMatch(/^http:\/\/localhost:\d+\/shell\/\?mcp=mcp-/)
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const errors: string[] = []
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page.on("console", (message) => {
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if (message.type() === "error") errors.push(message.text())
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})
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page.on("pageerror", (error) => errors.push(error.message))
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await page.goto(shellUrl)
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const iframe = page.locator("iframe[title='draw.io']")
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await expect(iframe).toHaveAttribute(
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"src",
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/^http:\/\/localhost:\d+\/drawio\/index\.html\?embed=1&proto=json&configure=1&/,
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)
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// The cover goes once draw.io sent "init" and loaded the first document
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await expect(page.getByTestId("canvas-loading")).toHaveCount(0, {
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timeout: 60_000,
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})
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const frame = page.frameLocator("iframe[title='draw.io']")
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await expect(frame.locator(".geDiagramContainer")).toBeVisible()
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// The shell's own texts and state: the first poll connects it
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await expect(page.getByTestId("shell-status")).toHaveText(
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"Connected to the MCP server",
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)
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await expect(page.getByTestId("shell-session")).toHaveText(
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shellUrl.slice(-8),
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)
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expect(errors).toEqual([])
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})
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// --- The sync with the server (shell/use-mcp-sync.ts) ---
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// Each test draws labels of its own: the previous test's diagram is on the
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// canvas when a test starts, and a label shared with it would be visible
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// before the test's own write arrives
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const box = (id: string, label: string, x: number) =>
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`<mxCell id="${id}" value="${label}" x="${x}" y="40" w="120" h="60"/>`
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const toolText = async (name: string, args: Record<string, unknown> = {}) => {
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const result = await client.callTool({ name, arguments: args })
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return (result.content as { type: string; text?: string }[])
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.map((c) => c.text ?? "")
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.join("\n")
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}
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/** The shell with the bundled draw.io ready and in step with the server */
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async function openShell(page: Page) {
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await page.goto(shellUrl)
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await expect(page.getByTestId("canvas-loading")).toHaveCount(0, {
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timeout: 60_000,
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})
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await expect(page.getByTestId("shell-status")).toHaveAttribute(
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"data-status",
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"connected",
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)
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return page.frameLocator("iframe[title='draw.io']")
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}
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test("a diagram the MCP draws appears in the shell", async ({ page }) => {
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const frame = await openShell(page)
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await toolText("create_new_diagram", {
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xml: `${box("2", "Alpha", 40)}\n${box("3", "Beta", 240)}\n<mxCell id="4" source="2" target="3"/>`,
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})
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await expect(frame.getByText("Alpha")).toBeVisible({ timeout: 10_000 })
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await expect(frame.getByText("Beta")).toBeVisible()
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})
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test("an edit is marked on the canvas, and one Ctrl+Z takes it back for the server too", async ({
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page,
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}) => {
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const frame = await openShell(page)
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await toolText("create_new_diagram", {
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xml: `${box("2", "Node A", 40)}\n${box("3", "Node B", 240)}`,
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})
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await expect(frame.getByText("Node A")).toBeVisible({ timeout: 10_000 })
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await toolText("edit_diagram", {
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operations: [
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{ operation: "add", cell_id: "5", new_xml: box("5", "Gamma", 440) },
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],
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})
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await expect(frame.getByText("Gamma")).toBeVisible({ timeout: 10_000 })
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// The editor bridge outlines the changed shape (editor-bridge.ts
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// HIGHLIGHT_OUTLINE); the write went on the canvas in place
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await expect(frame.locator('[stroke="#a86b00"]')).toHaveCount(1)
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await frame
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.locator(".geDiagramContainer")
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.click({ position: { x: 10, y: 10 } })
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await page.keyboard.press("Control+z")
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await expect(frame.getByText("Gamma")).toHaveCount(0)
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await expect(frame.getByText("Node A")).toBeVisible()
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// The undo is pushed: the server's diagram has no Gamma (get_diagram
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// also names the removed cell in its notes, so look at the XML)
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await expect
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.poll(async () => (await toolText("get_diagram")).includes('id="5"'), {
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timeout: 10_000,
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})
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.toBe(false)
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expect(await toolText("get_diagram")).toContain('value="Node A"')
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})
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test("a change made in the editor is pushed, and get_diagram returns it", async ({
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page,
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}) => {
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const frame = await openShell(page)
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await toolText("create_new_diagram", { xml: box("2", "Solo", 40) })
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await expect(frame.getByText("Solo")).toBeVisible({ timeout: 10_000 })
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// draw.io keeps no global editor; in embed mode Draw.loadPlugin hands
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// it to the callback at once
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await frame.locator("body").evaluate((body) => {
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const w = body.ownerDocument.defaultView as any
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w.Draw.loadPlugin((ui: any) => {
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const graph = ui.editor.graph
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graph.getModel().beginUpdate()
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try {
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graph.insertVertex(
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graph.getDefaultParent(),
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"manual-1",
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"Manual",
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40,
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200,
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120,
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60,
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"rounded=1;",
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)
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} finally {
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graph.getModel().endUpdate()
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}
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})
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})
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await expect(frame.getByText("Manual")).toBeVisible()
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await expect
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.poll(
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async () =>
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(await toolText("get_diagram")).includes('id="manual-1"'),
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{ timeout: 10_000 },
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)
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.toBe(true)
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})
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test("screenshot_diagram renders the canvas of the shell", async ({ page }) => {
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const frame = await openShell(page)
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await toolText("create_new_diagram", {
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xml: `${box("2", "Shot A", 40)}\n${box("3", "Shot B", 240)}`,
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})
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await expect(frame.getByText("Shot B")).toBeVisible({ timeout: 10_000 })
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const result = await client.callTool({
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name: "screenshot_diagram",
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arguments: {},
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})
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const image = (
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result.content as { type: string; data?: string; mimeType?: string }[]
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).find((c) => c.type === "image")
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expect(result.isError ?? false).toBe(false)
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expect(image?.mimeType).toBe("image/png")
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expect(image?.data?.length ?? 0).toBeGreaterThan(1000)
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})
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test("exporting another page shows it for a moment, then the user's page comes back", async ({
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page,
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}) => {
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const frame = await openShell(page)
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await toolText("create_new_diagram", { xml: box("2", "First page", 40) })
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await expect(frame.getByText("First page")).toBeVisible({ timeout: 10_000 })
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await toolText("add_page", {
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name: "Second",
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xml: `<mxGraphModel><root><mxCell id="0"/><mxCell id="1" parent="0"/><mxCell id="s1" value="OnSecond" style="rounded=1;" vertex="1" parent="1"><mxGeometry x="40" y="40" width="120" height="60" as="geometry"/></mxCell></root></mxGraphModel>`,
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})
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await expect(frame.getByText("Second")).toBeVisible({ timeout: 10_000 })
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// SVG has no page option in draw.io: the server sends a one-page
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// projection, which the shell shows only for the export
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const file = join(dataDir, "second.svg")
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const text = await toolText("export_diagram", {
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path: file,
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page_name: "Second",
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})
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expect(text).toContain("exported successfully")
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expect(readFileSync(file, "utf8")).toContain("OnSecond")
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await expect(frame.getByText("First page")).toBeVisible({ timeout: 10_000 })
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await expect(frame.locator(".geTabContainer .geActivePage")).toHaveText(
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"Page-1",
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)
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// The projection was never pushed as the document
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const xml = await toolText("get_diagram")
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expect(xml).toContain('value="First page"')
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expect(xml).toContain('name="Second"')
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})
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test("a screenshot of another page leaves the page on screen alone", async ({
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page,
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}) => {
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const frame = await openShell(page)
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await toolText("create_new_diagram", { xml: box("2", "Front page", 40) })
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await expect(frame.getByText("Front page")).toBeVisible({ timeout: 10_000 })
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await toolText("add_page", {
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name: "Backside",
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xml: `<mxGraphModel><root><mxCell id="0"/><mxCell id="1" parent="0"/><mxCell id="b1" value="OnBack" style="rounded=1;" vertex="1" parent="1"><mxGeometry x="40" y="40" width="120" height="60" as="geometry"/></mxCell></root></mxGraphModel>`,
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})
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const tabs = frame.locator(".geTabContainer")
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await expect(tabs.getByText("Backside", { exact: true })).toBeVisible({
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timeout: 10_000,
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})
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const activeTab = tabs.locator(".geActivePage")
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await expect(activeTab).toHaveText("Page-1")
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// The page on screen, as the editor reports it to the server
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const before = await toolText("get_selection")
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expect(before).toContain('page "Page-1"')
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// PNG: draw.io renders the other page by its id, off screen; the shell
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// never shows it as a projection, so the page on screen does not change
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const png = async (args: Record<string, unknown>) => {
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const result = await client.callTool({
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name: "screenshot_diagram",
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arguments: args,
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})
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const image = (
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result.content as {
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type: string
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data?: string
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mimeType?: string
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}[]
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).find((c) => c.type === "image")
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expect(result.isError ?? false).toBe(false)
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expect(image?.mimeType).toBe("image/png")
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expect(image?.data?.length ?? 0).toBeGreaterThan(1000)
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return image?.data ?? ""
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}
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const back = await png({ page_name: "Backside" })
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await expect(activeTab).toHaveText("Page-1")
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await expect(frame.getByText("Front page")).toBeVisible()
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expect(await toolText("get_selection")).toContain('page "Page-1"')
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// Another picture than the page on screen
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expect(await png({})).not.toBe(back)
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})
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test("get_selection reports the cells selected in the editor", async ({
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page,
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}) => {
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const frame = await openShell(page)
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await toolText("create_new_diagram", {
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xml: `${box("2", "Pick me", 40)}\n${box("3", "Leave me", 240)}\n<mxCell id="4" value="link" source="2" target="3"/>`,
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})
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await expect(frame.getByText("Pick me")).toBeVisible({ timeout: 10_000 })
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const nothing = await toolText("get_selection")
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expect(nothing).toContain("Nothing is selected")
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expect(nothing).toContain('page "Page-1"')
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// Select a shape and the edge in the editor, as a click would
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await frame.locator("body").evaluate((body) => {
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const w = body.ownerDocument.defaultView as any
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w.Draw.loadPlugin((ui: any) => {
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const graph = ui.editor.graph
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graph.setSelectionCells([
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graph.model.getCell("2"),
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graph.model.getCell("4"),
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])
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})
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})
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const text = await toolText("get_selection")
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expect(text).toContain('2 cells selected on page "Page-1"')
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expect(text).toContain('id="2" shape "Pick me" at x=40 y=40 w=120 h=60')
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expect(text).toContain('id="4" edge "link" from "2" to "3"')
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expect(text).not.toContain('id="3"')
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// A shape in a container is reported with it, also after the user
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// entered the container (Ctrl+Shift+End), where it is the default parent
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await toolText("create_new_diagram", {
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xml: `<mxCell id="box" value="Box" style="swimlane;" vertex="1" parent="1"><mxGeometry x="40" y="40" width="300" height="200" as="geometry"/></mxCell>\n<mxCell id="kid" value="Kid" style="rounded=1;" vertex="1" parent="box"><mxGeometry x="20" y="30" width="120" height="60" as="geometry"/></mxCell>`,
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})
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await expect(frame.getByText("Kid")).toBeVisible({ timeout: 10_000 })
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await frame.locator("body").evaluate((body) => {
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const w = body.ownerDocument.defaultView as any
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w.Draw.loadPlugin((ui: any) => {
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const graph = ui.editor.graph
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graph.enterGroup(graph.model.getCell("box"))
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graph.setSelectionCell(graph.model.getCell("kid"))
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})
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})
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const inside = await toolText("get_selection")
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expect(inside).toContain(
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'id="kid" shape "Kid" at x=20 y=30 w=120 h=60 inside "box"',
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)
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await frame.locator("body").evaluate((body) => {
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const w = body.ownerDocument.defaultView as any
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w.Draw.loadPlugin((ui: any) => ui.editor.graph.exitGroup())
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})
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})
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test("the download button saves the diagram as a file", async ({ page }) => {
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const frame = await openShell(page)
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await toolText("create_new_diagram", { xml: box("2", "Keep me", 40) })
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await expect(frame.getByText("Keep me")).toBeVisible({ timeout: 10_000 })
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await page.getByTestId("download").click()
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const dialog = page.getByRole("dialog")
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await expect(dialog).toBeVisible()
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// .drawio is the default format
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const download = page.waitForEvent("download")
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await dialog.getByRole("button", { name: "Export" }).click()
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const file = await download
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expect(file.suggestedFilename()).toMatch(
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/^diagram-\d{4}-\d{2}-\d{2}\.drawio$/,
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)
|
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// draw.io's own export of the document (compressed pages, as the web
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// app saves them; load_diagram opens them)
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const saved = readFileSync(await file.path(), "utf8")
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expect(saved).toMatch(/^<mxfile\b/)
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expect(saved).toContain('name="Page-1"')
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})
|
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|
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// --- Version cards from the server's History (shell/node-versions-source.ts) ---
|
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test("the version cards follow the server's History; undo, redo and restore go through it", async ({
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page,
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}) => {
|
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// A session of its own, so History holds only this test's versions
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const started = await toolText("start_session")
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const url = started.match(/Browser URL: (\S+)/)?.[1]
|
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if (!url) throw new Error(`start_session gave no URL:\n${started}`)
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await page.goto(url)
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await expect(page.getByTestId("canvas-loading")).toHaveCount(0, {
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timeout: 60_000,
|
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})
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await expect(page.getByTestId("shell-status")).toHaveAttribute(
|
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"data-status",
|
|
"connected",
|
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)
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const frame = page.frameLocator("iframe[title='draw.io']")
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const cards = page.getByTestId("version-card")
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const latestCard = cards.last()
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const getDiagram = () => toolText("get_diagram")
|
|
|
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// Three writes, three cards; the newest can be undone
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await toolText("create_new_diagram", { xml: box("a", "Card A", 40) })
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await expect(frame.getByText("Card A")).toBeVisible({ timeout: 10_000 })
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await expect(cards).toHaveCount(1, { timeout: 10_000 })
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await expect(cards.first()).toContainText("Drew the diagram")
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await toolText("edit_diagram", {
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operations: [
|
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{
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operation: "add",
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cell_id: "b",
|
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new_xml: box("b", "Card B", 240),
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},
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],
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})
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await expect(frame.getByText("Card B")).toBeVisible({ timeout: 10_000 })
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await toolText("edit_diagram", {
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operations: [
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{
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operation: "add",
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cell_id: "c",
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new_xml: box("c", "Card C", 440),
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},
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],
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})
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await expect(frame.getByText("Card C")).toBeVisible({ timeout: 10_000 })
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await expect(cards).toHaveCount(3, { timeout: 10_000 })
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await expect(latestCard).toContainText("Changed the diagram")
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|
await expect(latestCard.getByTestId("version-undo")).toHaveText(
|
|
/Undo change/,
|
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)
|
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await expect(page.getByTestId("version-thumb")).toHaveCount(3)
|
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|
|
// Undo: the server restores the version before; the card says so
|
|
await latestCard.getByTestId("version-undo").click()
|
|
await expect(frame.getByText("Card C")).toHaveCount(0, { timeout: 10_000 })
|
|
await expect(frame.getByText("Card B")).toBeVisible()
|
|
await expect(latestCard).toContainText("Change undone")
|
|
await expect(latestCard.getByTestId("version-undo")).toHaveText(
|
|
/Redo change/,
|
|
)
|
|
// A restore adds a History entry, not a card
|
|
await expect(cards).toHaveCount(3)
|
|
await expect
|
|
.poll(async () => (await getDiagram()).includes('id="c"'), {
|
|
timeout: 10_000,
|
|
})
|
|
.toBe(false)
|
|
|
|
// Redo: the newest version is back on the canvas and the server
|
|
await latestCard.getByTestId("version-undo").click()
|
|
await expect(frame.getByText("Card C")).toBeVisible({ timeout: 10_000 })
|
|
await expect(latestCard).toContainText("Changed the diagram")
|
|
await expect(latestCard.getByTestId("version-undo")).toHaveText(
|
|
/Undo change/,
|
|
)
|
|
await expect
|
|
.poll(async () => (await getDiagram()).includes('id="c"'), {
|
|
timeout: 10_000,
|
|
})
|
|
.toBe(true)
|
|
|
|
// A hand edit: no version is on the canvas, so the newest card offers
|
|
// a restore, not an undo
|
|
await frame.locator("body").evaluate((body) => {
|
|
const w = body.ownerDocument.defaultView as any
|
|
w.Draw.loadPlugin((ui: any) => {
|
|
const graph = ui.editor.graph
|
|
graph.getModel().beginUpdate()
|
|
try {
|
|
graph.insertVertex(
|
|
graph.getDefaultParent(),
|
|
"manual-card",
|
|
"By hand",
|
|
40,
|
|
200,
|
|
120,
|
|
60,
|
|
"rounded=1;",
|
|
)
|
|
} finally {
|
|
graph.getModel().endUpdate()
|
|
}
|
|
})
|
|
})
|
|
await expect
|
|
.poll(async () => (await getDiagram()).includes('id="manual-card"'), {
|
|
timeout: 10_000,
|
|
})
|
|
.toBe(true)
|
|
await expect(latestCard.getByTestId("version-restore")).toBeVisible()
|
|
await expect(cards).toHaveCount(3)
|
|
|
|
// Restoring the first version keeps the hand edit as a version of its
|
|
// own, and get_diagram agrees with the canvas
|
|
await cards.first().getByTestId("version-restore").click()
|
|
await expect(frame.getByText("Card B")).toHaveCount(0, { timeout: 10_000 })
|
|
await expect(frame.getByText("By hand")).toHaveCount(0)
|
|
await expect(frame.getByText("Card A")).toBeVisible()
|
|
await expect(cards).toHaveCount(4, { timeout: 10_000 })
|
|
await expect(cards.nth(3)).toContainText("Changed by hand")
|
|
// The first version is on the canvas: its restore button rests
|
|
await expect(cards.first().getByTestId("version-restore")).toBeDisabled()
|
|
await expect
|
|
.poll(getDiagram, { timeout: 10_000 })
|
|
.toContain('value="Card A"')
|
|
const xml = await getDiagram()
|
|
expect(xml).not.toContain('id="b"')
|
|
expect(xml).not.toContain('id="manual-card"')
|
|
// The MCP tool sees the same versions: the hand edit is one step back
|
|
expect(await toolText("restore_version", { steps_back: 1 })).toContain(
|
|
"Restored the version 1 step(s) back",
|
|
)
|
|
await expect(frame.getByText("By hand")).toBeVisible({ timeout: 10_000 })
|
|
await expect(cards).toHaveCount(4)
|
|
})
|
|
|
|
test("the theme toggle switches the page and draw.io, and is remembered", async ({
|
|
page,
|
|
}) => {
|
|
await page.goto(shellUrl)
|
|
await expect(page.getByTestId("canvas-loading")).toHaveCount(0, {
|
|
timeout: 60_000,
|
|
})
|
|
const html = page.locator("html")
|
|
const frameBody = page
|
|
.frameLocator("iframe[title='draw.io']")
|
|
.locator("body")
|
|
await expect(html).not.toHaveClass(/dark/)
|
|
await expect(frameBody).not.toHaveClass(/geDarkMode/)
|
|
|
|
await page.getByTestId("theme-toggle").click()
|
|
await expect(html).toHaveClass(/dark/)
|
|
// Same-origin draw.io switches in place, without a reload
|
|
await expect(frameBody).toHaveClass(/geDarkMode/)
|
|
expect(
|
|
await page.evaluate(() => localStorage.getItem("mcp:dark-mode")),
|
|
).toBe("true")
|
|
|
|
await page.reload()
|
|
await expect(html).toHaveClass(/dark/)
|
|
await page.getByTestId("theme-toggle").click()
|
|
await expect(html).not.toHaveClass(/dark/)
|
|
})
|