chore: Add revisions.create backfill script (#2330)

* chore: Add revisions.create backfill script

* fix: Correct timestamp on revisions.create events

server/scripts/20210716000000-backfill-revisions.test.js

@@ -0,0 +1,52 @@
+// @flow
+import { Revision, Event } from "../models";
+import { buildDocument } from "../test/factories";
+import { flushdb } from "../test/support";
+import script from "./20210716000000-backfill-revisions";
+
+beforeEach(() => flushdb());
+
+describe("#work", () => {
+  it("should create events for revisions", async () => {
+    const document = await buildDocument();
+    const revision = await Revision.createFromDocument(document);
+
+    await script();
+
+    const event = await Event.findOne();
+
+    expect(event.name).toEqual("revisions.create");
+    expect(event.modelId).toEqual(revision.id);
+    expect(event.documentId).toEqual(document.id);
+    expect(event.teamId).toEqual(document.teamId);
+    expect(event.createdAt).toEqual(revision.createdAt);
+  });
+
+  it("should create events for revisions of deleted documents", async () => {
+    const document = await buildDocument();
+    const revision = await Revision.createFromDocument(document);
+
+    await document.destroy();
+
+    await script();
+
+    const event = await Event.findOne();
+
+    expect(event.name).toEqual("revisions.create");
+    expect(event.modelId).toEqual(revision.id);
+    expect(event.documentId).toEqual(document.id);
+    expect(event.teamId).toEqual(document.teamId);
+    expect(event.createdAt).toEqual(revision.createdAt);
+  });
+
+  it("should be idempotent", async () => {
+    const document = await buildDocument();
+    await Revision.createFromDocument(document);
+
+    await script();
+    await script();
+
+    const count = await Event.count();
+    expect(count).toEqual(1);
+  });
+});