c526287b2f
## Summary - Reconnect the UI event stream when a runtime surfaces an SSE close notification, not only on EventSource errors. - Avoid scheduling duplicate reconnect loops when close/error notifications arrive together. - Add a targeted EventSource handler test for the close paths described in #207. ## Validation - node --experimental-strip-types --test "packages/ui/src/lib/event-source-handlers.test.ts" - npm run build --workspace @codenomad/ui Closes #207
70 lines
1.6 KiB
TypeScript
70 lines
1.6 KiB
TypeScript
import assert from "node:assert/strict"
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import { describe, it } from "node:test"
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import { attachEventSourceHandlers } from "./event-source-handlers.ts"
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class FakeEventSource extends EventTarget {
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onmessage: ((event: MessageEvent) => void) | null = null
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onerror: (() => void) | null = null
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onclose: (() => void) | null = null
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}
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const logger = {
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warn() {},
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error() {},
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}
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describe("attachEventSourceHandlers", () => {
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it("requests reconnect when EventSource emits close", () => {
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const source = new FakeEventSource()
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let reconnects = 0
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attachEventSourceHandlers(source as unknown as EventSource, {
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onEvent() {},
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onError: () => {
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reconnects += 1
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},
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logger,
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})
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source.dispatchEvent(new Event("close"))
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assert.equal(reconnects, 1)
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})
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it("requests reconnect when EventSource invokes onclose", () => {
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const source = new FakeEventSource()
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let reconnects = 0
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attachEventSourceHandlers(source as unknown as EventSource, {
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onEvent() {},
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onError: () => {
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reconnects += 1
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},
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logger,
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})
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source.onclose?.()
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assert.equal(reconnects, 1)
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})
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it("requests reconnect once when a close notification hits multiple handlers", () => {
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const source = new FakeEventSource()
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let reconnects = 0
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attachEventSourceHandlers(source as unknown as EventSource, {
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onEvent() {},
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onError: () => {
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reconnects += 1
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},
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logger,
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})
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source.onclose?.()
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source.dispatchEvent(new Event("close"))
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source.onerror?.()
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assert.equal(reconnects, 1)
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})
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})
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