ts-mls/dist/test/scenario/common.js

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import { makePskIndex } from "../../src/clientState";
import { createApplicationMessage } from "../../src/createMessage";
import { processPrivateMessage } from "../../src/processMessages";
import { UsageError } from "../../src/mlsError";
export async function testEveryoneCanMessageEveryone(clients, impl) {
    const encoder = new TextEncoder();
    const updatedGroups = [...clients];
    for (const [senderIndex, senderState] of updatedGroups.entries()) {
        const messageText = `Hello from member ${senderIndex}`;
        const encodedMessage = encoder.encode(messageText);
        const { privateMessage, newState: newSenderState } = await createApplicationMessage(senderState, encodedMessage, impl);
        updatedGroups[senderIndex] = newSenderState;
        for (const [receiverIndex, receiverGroup] of updatedGroups.entries()) {
            if (receiverIndex === senderIndex)
                continue;
            const result = await processPrivateMessage(receiverGroup, privateMessage, makePskIndex(receiverGroup, {}), impl);
            if (result.kind === "newState") {
                throw new Error(`Expected application message for member ${receiverIndex} from ${senderIndex}`);
            }
            expect(result.message).toStrictEqual(encodedMessage);
            updatedGroups[receiverIndex] = result.newState;
        }
    }
    return { updatedGroups };
}
export async function cannotMessageAnymore(state, impl) {
    await expect(createApplicationMessage(state, new TextEncoder().encode("hello"), impl)).rejects.toThrow(UsageError);
}
export function shuffledIndices(arr) {
    const indices = arr.map((_, i) => i);
    for (let i = indices.length - 1; i > 0; i--) {
        const j = Math.floor(Math.random() * (i + 1));
        [indices[i], indices[j]] = [indices[j], indices[i]];
    }
    return indices;
}
export function getRandomElement(arr) {
    const index = Math.floor(Math.random() * arr.length);
    return arr[index];
}
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