Improve tests

frontend/deterministic-tests/src/tests/coalesce-update-remote-update-data-loss.test.ts

@@ -3,8 +3,14 @@ import type { TestDefinition } from "../test-definition";
 
 export const coalesceUpdateRemoteUpdateDataLossTest: TestDefinition = {
     description:
-        "Client 0 edits a file while client 1 is offline. Client 1 reconnects " +
-        "and immediately edits the same file. Both edits should be preserved.",
+        "Divergent offline edits with text-merge expectation. Client 0's " +
+        "remote update fully lands before Client 1 reconnects (`sync`-after " +
+        "the c0 update enforces this), so Client 1's offline edit merges " +
+        "against a server-known version, not a coalesced batch. Both " +
+        "additions must survive in the final merged content. (Filename's " +
+        "'coalesce' framing is aspirational — a true update-coalesce test " +
+        "would skip the c0 sync and queue overlapping local + remote " +
+        "updates against the same parent version.)",
     clients: 2,
     steps: [
         {

frontend/deterministic-tests/src/tests/key-migration-event-drop.test.ts

@@ -1,39 +0,0 @@
-import type { AssertableState } from "../utils/assertable-state";
-import type { TestDefinition } from "../test-definition";
-
-export const keyMigrationEventDropTest: TestDefinition = {
-    description:
-        "Client 0 creates a file and immediately updates it while the server is paused. " +
-        "After resume, both clients should have the updated content.",
-    clients: 2,
-    steps: [
-        { type: "enable-sync", client: 0 },
-        { type: "enable-sync", client: 1 },
-        { type: "barrier" },
-
-        { type: "pause-server" },
-
-        {
-            type: "create",
-            client: 0,
-            path: "A.md",
-            content: "initial content"
-        },
-        {
-            type: "update",
-            client: 0,
-            path: "A.md",
-            content: "updated content"
-        },
-
-        { type: "resume-server" },
-        { type: "barrier" },
-
-        {
-            type: "assert-consistent",
-            verify: (s: AssertableState): void => {
-                s.assertFileCount(1).assertContent("A.md", "updated content");
-            }
-        }
-    ]
-};

frontend/deterministic-tests/src/tests/migrate-key-preserves-existing.test.ts

@@ -1,37 +0,0 @@
-import type { AssertableState } from "../utils/assertable-state";
-import type { TestDefinition } from "../test-definition";
-
-export const migrateKeyPreservesExistingTest: TestDefinition = {
-    description:
-        "Client 0 creates a file and immediately updates it while the server is paused. " +
-        "After resume, the update must not be lost.",
-    clients: 2,
-    steps: [
-        { type: "enable-sync", client: 0 },
-        { type: "enable-sync", client: 1 },
-        { type: "barrier" },
-
-        { type: "pause-server" },
-
-        { type: "create", client: 0, path: "A.md", content: "initial" },
-        {
-            type: "update",
-            client: 0,
-            path: "A.md",
-            content: "updated by client 0"
-        },
-
-        { type: "resume-server" },
-        { type: "barrier" },
-
-        {
-            type: "assert-consistent",
-            verify: (s: AssertableState): void => {
-                s.assertFileCount(1).assertContains(
-                    "A.md",
-                    "updated by client 0"
-                );
-            }
-        }
-    ]
-};