80 lines
2.6 KiB
TypeScript
80 lines
2.6 KiB
TypeScript
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import { describe, expect, it } from "vitest";
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import { createChatScope } from "./chat-utils";
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function deferred<T>() {
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let resolve!: (value: T) => void;
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let reject!: (error: Error) => void;
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const promise = new Promise<T>((yes, no) => {
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resolve = yes;
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reject = no;
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});
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return { promise, resolve, reject };
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}
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describe("chat async scope", () => {
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it("ignores a send resolved after a channel switch", async () => {
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const scope = createChatScope("acme", "first");
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const request = deferred<string>();
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const result: string[] = [];
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const valid = scope.capture();
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const completion = request.promise.then((message) => {
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if (valid()) result.push(message);
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});
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scope.select("acme", "second");
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request.resolve("first-channel message");
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await completion;
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expect(result).toEqual([]);
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});
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it("ignores a late failed send, including a permission error", async () => {
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const scope = createChatScope("acme", "first");
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const request = deferred<string>();
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const result: string[] = [];
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const valid = scope.capture();
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const completion = request.promise.catch((error: Error) => {
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if (valid()) result.push(error.message);
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});
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scope.select("acme", "second");
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request.reject(new Error("FORBIDDEN"));
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await completion;
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expect(result).toEqual([]);
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});
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it("ignores a stale mutation result and its subsequent refresh", async () => {
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const scope = createChatScope("acme", "first");
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const mutation = deferred<string>();
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const refresh = deferred<string>();
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const result: string[] = [];
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const valid = scope.capture();
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const completion = mutation.promise.then(async (value) => {
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if (!valid()) return;
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result.push(value);
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const page = await refresh.promise;
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if (valid()) result.push(page);
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});
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mutation.resolve("edited");
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await Promise.resolve();
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scope.select("acme", "second");
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refresh.resolve("old page");
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await completion;
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expect(result).toEqual(["edited"]);
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});
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it("invalidates pending work on purge before redirect and cannot remove a new channel's cache", async () => {
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const scope = createChatScope("acme", "first");
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const cancellation = deferred<void>();
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const result: string[] = [];
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const valid = scope.capture();
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scope.revoke();
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result.push("redirect");
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const cleanup = cancellation.promise.then(() => {
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if (valid()) result.push("remove queries");
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});
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scope.select("acme", "second");
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cancellation.resolve();
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await cleanup;
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expect(result).toEqual(["redirect"]);
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expect(scope.capture()()).toBe(true);
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});
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});
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