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import { describe, expect, test } from "bun:test";
import {
StorageMigration,
type StorageMigrationRunArgs,
} from "@/services/storage/migrations/base";
import type {
MigrationResult,
ProjectRecord,
} from "@/services/storage/migrations/transformers/types";
import {
CURRENT_PROJECT_VERSION,
migrations,
} from "@/services/storage/migrations";
import { v5Project } from "@/services/storage/migrations/__tests__/fixtures";
import { getRecordVersion, migrateProjectRecord } from "../migrate";
class StepMigration extends StorageMigration {
from: number;
to: number;
private transform: ({ project }: { project: ProjectRecord }) => ProjectRecord;
private shouldSkip: boolean;
constructor({
from,
to,
transform,
shouldSkip = false,
}: {
from: number;
to: number;
transform: ({ project }: { project: ProjectRecord }) => ProjectRecord;
shouldSkip?: boolean;
}) {
super();
this.from = from;
this.to = to;
this.transform = transform;
this.shouldSkip = shouldSkip;
}
async run({
project,
}: StorageMigrationRunArgs): Promise<MigrationResult<ProjectRecord>> {
if (this.shouldSkip) {
return { project, skipped: true, reason: "skip requested" };
}
return { project: this.transform({ project }), skipped: false };
}
}
function setVersion({
project,
version,
}: {
project: ProjectRecord;
version: number;
}): ProjectRecord {
return { ...project, version };
}
describe("getRecordVersion", () => {
test("uses the explicit version field", () => {
expect(getRecordVersion({ project: { version: 7 } })).toBe(7);
});
test("detects v1 projects by their scenes array", () => {
expect(getRecordVersion({ project: { scenes: [{ id: "s" }] } })).toBe(1);
});
test("falls back to v0", () => {
expect(getRecordVersion({ project: {} })).toBe(0);
expect(getRecordVersion({ project: { scenes: [] } })).toBe(0);
});
});
describe("migrateProjectRecord", () => {
test("applies migrations in version order regardless of registration order", async () => {
const registry = [
new StepMigration({
from: 1,
to: 2,
transform: ({ project }) => setVersion({ project, version: 2 }),
}),
new StepMigration({
from: 0,
to: 1,
transform: ({ project }) => setVersion({ project, version: 1 }),
}),
];
const result = await migrateProjectRecord({
project: { version: 0, steps: [] },
migrations: registry,
});
expect(result.fromVersion).toBe(0);
expect(result.toVersion).toBe(2);
expect(result.complete).toBe(true);
expect(result.project.version).toBe(2);
});
test("reports incomplete when a migration skips", async () => {
const registry = [
new StepMigration({
from: 0,
to: 1,
transform: ({ project }) => project,
shouldSkip: true,
}),
new StepMigration({
from: 1,
to: 2,
transform: ({ project }) => setVersion({ project, version: 2 }),
}),
];
const result = await migrateProjectRecord({
project: { version: 0 },
migrations: registry,
});
expect(result.toVersion).toBe(0);
expect(result.complete).toBe(false);
});
test("is a no-op for current-version documents", async () => {
const registry = [
new StepMigration({
from: 0,
to: 1,
transform: ({ project }) => setVersion({ project, version: 1 }),
}),
];
const project = { version: 1, marker: "untouched" };
const result = await migrateProjectRecord({ project, migrations: registry });
expect(result.complete).toBe(true);
expect(result.project).toBe(project);
});
test("migrates a real v5 fixture to the current version with the app registry", async () => {
const result = await migrateProjectRecord({
project: structuredClone(v5Project),
migrations,
});
expect(result.fromVersion).toBe(5);
expect(result.complete).toBe(true);
expect(result.toVersion).toBe(CURRENT_PROJECT_VERSION);
expect(result.project.version).toBe(CURRENT_PROJECT_VERSION);
});
});
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