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Add initialTerm to testAdd and make it fail; add a failing testRestart

de64
Vitaliy Filippov 2023-09-29 00:49:24 +03:00
parent c96a762ffc
commit b1da201d76
1 changed files with 53 additions and 1 deletions
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54
tinyraft.spec.js
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@ -132,7 +132,7 @@ async function testStartThenRemoveNode()
async function testAddNode()
{
console.log('testAddNode');
const nodes = newNodes(5);
const nodes = newNodes(5, {}, cfg => cfg.initialTerm = 1000);
await new Promise(ok => setTimeout(ok, 2000));
checkQuorum(nodes, 5);
// Add node
@ -180,11 +180,63 @@ async function testLeadershipExpiration()
console.log('testLeadershipExpiration: OK');
}
async function testRestart()
{
const nodes = newNodes(5, {}, cfg => cfg.initialTerm = 1000);
let leaderChanges = 0, prevLeader = null;
nodes[2].on('change', (st) =>
{
const leader = st.state == TinyRaft.CANDIDATE ? null : st.leader;
if (leader != prevLeader)
{
prevLeader = leader;
leaderChanges++;
}
});
// Check that 5 nodes are in quorum after 2000ms
await new Promise(ok => setTimeout(ok, 2000));
checkQuorum(nodes, 5);
if (leaderChanges >= 3)
{
throw new Error("leaderChanges = "+leaderChanges+" (expected < 3)")
}
// Stop a follower
let restarted = 1 + (prevLeader % 5);
if (restarted == 2)
{
restarted = 1 + (prevLeader + 1) % 5;
}
console.log("stopping a follower (node "+restarted+")");
nodes[restarted].stop();
delete nodes[restarted];
// Wait 2000ms
await new Promise(ok => setTimeout(ok, 2000));
// Restart a follower
console.log("restarting a follower (node "+restarted+")");
leaderChanges = 0;
newNode(restarted, nodes, {}, null);
nodes[restarted].start();
// Check quorum and the fact that the leader didn't change after 2000ms
await new Promise(ok => setTimeout(ok, 2000));
checkQuorum(nodes, 5);
if (leaderChanges > 0)
{
throw new Error("leader changed after restart of a follower");
}
// Clean up
for (const id in nodes)
{
nodes[id].stop();
}
console.log('testRestart: OK');
}
async function run()
{
await testStartThenRemoveNode();
await testAddNode();
await testLeadershipExpiration();
await testRestart();
process.exit(0);
}