Files
app/frontend/tests/flows.spec.ts
T
Melvin StroblandClaude Fable 5 8c82549cf6 Add the flow editor: canvas, node panel and live values
The browser half of M3. Flows open on a full-bleed canvas with their chrome
floating over it: flow tabs top, dock bottom, node settings in a panel on the
right that leaves the graph visible and running behind it.

- Connections are derived, not stored. A node declares the messages it reads
  and publishes; every matching pair draws an edge, so two producers of one
  message converge on their consumer. Dragging output to input is shorthand
  for pointing that input at the producer's message, and asks before it
  replaces an existing one.
- Values land on the edges as they flow, over a websocket that feeds a store
  outside React, so a value arriving re-renders its own chip and nothing else.
  Clicking an edge shows the last payload and when it arrived.
- Node source is edited in Monaco, loaded only when a panel opens and themed
  from the design tokens.
- Edits autosave; identical documents are skipped server-side, so a quiet
  canvas writes nothing.
- Validation from the API shows on the node it belongs to and is summarised in
  the dock, where each entry pans to its node.
- Works on a phone: touch-connect, 44px dock targets, and the node panel
  becomes a full-screen sheet.

Two new tokens (--status-success, --font-mono) are mirrored in the website repo
and recorded in DESIGN-GUIDELINES.md.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016WzrvW7rjQbynnhF6pxh6i
2026-08-15 18:10:50 +02:00

105 lines
3.3 KiB
TypeScript

import { expect, type Page, test } from "@playwright/test"
/**
* The flow editor's load-bearing behaviour: nodes are placed, connections come
* from matching message names, and everything survives a reload because the
* canvas autosaves.
*/
const flowName = `test_flow_${Date.now().toString(36)}`
test.use({ storageState: "playwright/.auth/user.json" })
test.describe.configure({ mode: "serial" })
const apiUrl = process.env.VITE_API_URL || "http://api.localhost"
/** Write a node's source through the API; typing code is not what we test. */
async function setNodeSource(page: Page, nodeId: string, code: string) {
const token = await page.evaluate(() => localStorage.getItem("access_token"))
const response = await page.request.put(
`${apiUrl}/api/v1/flows/${flowName}/nodes/${nodeId}/source`,
{ headers: { Authorization: `Bearer ${token}` }, data: { code } },
)
expect(response.ok()).toBeTruthy()
}
async function addFunctionNode(page: Page, expected: number) {
await page.getByTestId("add-node").click()
await page
.getByRole("option", { name: /function/i })
.first()
.click()
await expect(page.locator(".react-flow__node")).toHaveCount(expected)
await page.keyboard.press("Escape")
}
/** Name the message on a node's first input or output port. */
async function bindPort(
page: Page,
index: number,
side: "in" | "out",
message: string,
) {
await page.locator(".react-flow__node").nth(index).click()
const panel = page.getByTestId("node-panel")
await panel
.getByRole("button", { name: "Add" })
.nth(side === "in" ? 0 : 1)
.click()
await panel.getByLabel("Message name").fill(message)
await page.keyboard.press("Escape")
}
test("a flow can be created, wired up, and comes back after a reload", async ({
page,
}) => {
await page.goto("/flows")
// Create a flow of our own so the test does not lean on existing data.
await page.getByRole("button", { name: "New flow" }).click()
await page.getByTestId("flow-name-input").fill(flowName)
await page.getByRole("button", { name: "Create flow" }).click()
await page.waitForURL(`/flows/${flowName}`)
await addFunctionNode(page, 1)
await addFunctionNode(page, 2)
// The first node publishes "reading", the second consumes it. That match is
// the whole connection; no edge was drawn by hand.
await bindPort(page, 0, "out", "reading")
await bindPort(page, 1, "in", "reading")
await expect(page.locator(".react-flow__edge")).toHaveCount(1)
// Autosave, then prove it by coming back fresh.
await page.waitForTimeout(1500)
await page.reload()
await expect(page.locator(".react-flow__node")).toHaveCount(2)
await expect(page.locator(".react-flow__edge")).toHaveCount(1)
})
test("running a flow puts values on its edges", async ({ page }) => {
await page.goto(`/flows/${flowName}`)
await page.waitForSelector(".react-flow__node")
await setNodeSource(
page,
"python",
'def process(params):\n return {"reading": 42.0}\n',
)
await setNodeSource(
page,
"python_2",
"def process(reading, params):\n return {}\n",
)
await page.reload()
await page.waitForSelector(".react-flow__edge")
await page.getByTestId("run-flow").click()
await expect(page.locator(".react-flow__edgelabel-renderer")).toContainText(
"42",
{ timeout: 15000 },
)
})