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Clean up deterministic tests

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This commit is contained in:
Andras Schmelczer 2026-03-28 11:12:43 +00:00
parent 7b9287ca52
commit f36a84b275
113 changed files with 1366 additions and 3835 deletions
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70
frontend/deterministic-tests/src/tests/server-pause-both-edit-same-file.test.ts
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@ -1,57 +1,10 @@
import type { ClientState, TestDefinition } from "../test-definition";
import { assert } from "../utils/assert";
/**
* EDGE CASE: Both clients edit the same file while server is paused.
*
* When the server is paused (SIGSTOP), both clients' HTTP requests stall.
* When the server resumes, both updates arrive nearly simultaneously.
* The server processes them sequentially (SQLite), so one will be a
* FastForwardUpdate and the other will trigger a 3-way merge.
*
* This test verifies:
* 1. Both edits are preserved in the merged result
* 2. Both clients converge to the same content
* 3. The content cache on both clients is correct after the merge
* (subsequent edits use the right diff base)
*
* After the initial merge converges, Client 0 makes another edit to
* verify the content cache is correct — if the cache has wrong content,
* the diff will be computed incorrectly and the update will fail.
*/
function verifyBothConcurrentEdits(state: ClientState): void {
assert(state.files.size === 1, `Expected 1 file, got ${state.files.size}`);
assert(state.files.has("shared.md"), "Expected shared.md to exist");
const content = state.files.get("shared.md") ?? "";
assert(
content.includes("edited by client 0"),
`Expected content to include client 0's edit, got: "${content}"`
);
assert(
content.includes("edited by client 1"),
`Expected content to include client 1's edit, got: "${content}"`
);
}
function verifyPostMergeEdit(state: ClientState): void {
assert(state.files.size === 1, `Expected 1 file, got ${state.files.size}`);
assert(state.files.has("shared.md"), "Expected shared.md to exist");
const content = state.files.get("shared.md") ?? "";
assert(
content.includes("post-merge edit from client 0"),
`Expected content to include post-merge edit, got: "${content}"`
);
}
import type { TestDefinition } from "../test-definition";
export const serverPauseBothEditSameFileTest: TestDefinition = {
name: "Server Pause — Both Clients Edit Same File + Post-Merge Edit",
description:
"Both clients edit the same file while the server is paused. " +
"After resume and convergence, Client 0 makes another edit to " +
"verify the content cache is consistent (correct diff base).",
"Both clients edit different sections of the same file while the server is paused. After resuming and converging, client 0 makes another edit to verify further updates still work correctly.",
clients: 2,
steps: [
// Setup
{
type: "create",
client: 0,
@ -63,10 +16,8 @@ export const serverPauseBothEditSameFileTest: TestDefinition = {
{ type: "sync" },
{ type: "barrier" },
// Pause server
{ type: "pause-server" },
// Both clients edit different sections
{
type: "update",
client: 0,
@ -82,15 +33,18 @@ export const serverPauseBothEditSameFileTest: TestDefinition = {
"line 1: original\nline 2: original\nline 3: edited by client 1"
},
// Resume — both updates hit server nearly simultaneously
{ type: "resume-server" },
{ type: "sync" },
{ type: "barrier" },
// Verify both concurrent edits are preserved in the merge
{ type: "assert-consistent", verify: verifyBothConcurrentEdits },
{
type: "assert-consistent",
verify: (s) =>
s
.assertFileCount(1)
.assertContains("shared.md", "edited by client 0", "edited by client 1"),
},
// Now Client 0 makes another edit (verifies content cache is correct)
{
type: "update",
client: 0,
@ -100,6 +54,10 @@ export const serverPauseBothEditSameFileTest: TestDefinition = {
{ type: "sync" },
{ type: "barrier" },
{ type: "assert-consistent", verify: verifyPostMergeEdit }
{
type: "assert-consistent",
verify: (s) =>
s.assertFileCount(1).assertContains("shared.md", "post-merge edit from client 0"),
}
]
};