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<!DOCTYPE HTML>
<html>
<head>
<title>Test for Messaging Layer Security</title>
<!-- SimpleTest Helpers -->
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
<!-- Local Helpers -->
<script src="head_mls.js"></script>
</head>
<body>
<pre id="test">
<script class="testbody" type="text/javascript">
async function test_group_join() {
const mls = new MLS();
// Generate Identity KeyPairs for Alice and Bob
let alice = await mls.generateIdentity();
let bob = await mls.generateIdentity();
info("Alice Client ID:", byteArrayToHexString(alice.content));
info("Bob Client ID:", byteArrayToHexString(bob.content));
// Generate Credentials for Alice and Bob
let credential_alice = await mls.generateCredential("alice");
let credential_bob = await mls.generateCredential("bob");
// Generate a KeyPackage for Bob
let kp_bob = await mls.generateKeyPackage(bob, credential_bob);
// Creation of a Group by Alice
let group_alice = await mls.groupCreate(alice, credential_alice);
info("Group Alice:", JSON.stringify(group_alice));
// Get membership of the group
let members_alice_0 = await group_alice.details();
// Test that the returned group membership is not null
info("Membership @ Epoch 0:", JSON.stringify(members_alice_0));
is(members_alice_0.members.length, 1, "There should be exactly one member in the group");
info("Member Client ID:", byteArrayToHexString(members_alice_0.members[0].clientId));
info("Alice Client ID:", byteArrayToHexString(alice.content));
is(byteArrayToHexString(members_alice_0.members[0].clientId), byteArrayToHexString(alice.content), "The client ID of the member should match Alice's client ID");
// Alice adds Bob to a group
let commit_output = await group_alice.add(kp_bob);
// Test that the returned commit output is not null
info("Commit Output 1:", JSON.stringify(commit_output));
isnot(byteArrayToHexString(commit_output.commit), "", "Commit Output commit should not be an empty string");
// Alice receives the commit
let group_and_epoch_1_alice = await group_alice.receive(commit_output.commit);
// Test that the new group identifier and epoch are valid
info("Alice's Group Identifier and Epoch:", JSON.stringify(group_and_epoch_1_alice));
isnot(byteArrayToHexString(group_and_epoch_1_alice.groupId), "", "Group ID should not be an empty string");
isnot(byteArrayToHexString(group_and_epoch_1_alice.groupEpoch), "", "Group Epoch should not be an empty string");
// Get membership of the group
let members_alice_1 = await group_alice.details();
// Bob joins the group
let group_bob = await mls.groupJoin(bob, commit_output.welcome);
let members_bob_1 = await group_bob.details();
// Test: compare the group identifier after the join
is(byteArrayToHexString(group_alice.groupId), byteArrayToHexString(group_bob.groupId), "Alice GID == Bob GID");
// Test: the group should have two members
info("Membership @ Epoch 1:", JSON.stringify(members_alice_1));
is(members_alice_1.members.length, 2, "There should be exactly two members in the group");
// Test: the group should have exactly two members at epoch 0
is(members_alice_0.members.length, 1, "There should be exactly one member in the group");
// Test: the group should have exactly two members at epoch 1
is(members_alice_1.members.length, 2, "There should be exactly two members in the group");
is(members_bob_1.members.length, 2, "There should be exactly two members in the group");
// Test: Bob should be in the group according to Alice's view
is(members_alice_1.members.some(member => byteArrayToHexString(member.clientId) === byteArrayToHexString(bob.content)), true, "Bob should be in the group");
// Test: Alice should be in the group according to Alice's view
is(members_alice_1.members.some(member => byteArrayToHexString(member.clientId) === byteArrayToHexString(alice.content)), true, "Alice should be in the group");
// Test: Bob should be in the group according to Bob's view
is(members_bob_1.members.some(member => byteArrayToHexString(member.clientId) === byteArrayToHexString(bob.content)), true, "Bob should be in the group");
// Test: Alice should be in the group according to Bob's view
is(members_bob_1.members.some(member => byteArrayToHexString(member.clientId) === byteArrayToHexString(alice.content)), true, "Alice should be in the group");
SimpleTest.finish();
}
SimpleTest.waitForExplicitFinish();
test_group_join();
</script>
</pre>
</body>
</html>
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