import assert from "node:assert/strict";
import test from "node:test";

import { SchemaRequestGuard } from "../src/panels/modeling/schemaRequestGuard.ts";

const projectA = {
  tenantId: "tenant-a",
  projectId: "project-a",
  graphName: "graph-a",
};

const projectB = {
  tenantId: "tenant-b",
  projectId: "project-b",
  graphName: "graph-b",
};

test("a response from project A is stale as soon as project B starts loading", () => {
  const guard = new SchemaRequestGuard();
  const requestA = guard.begin(projectA);
  const requestB = guard.begin(projectB);

  assert.equal(guard.isCurrent(requestA, projectB), false);
  assert.equal(guard.isCurrent(requestB, projectB), true);
});

test("an explicit project-context invalidation rejects an in-flight response", () => {
  const guard = new SchemaRequestGuard();
  const requestA = guard.begin(projectA);

  guard.invalidate();

  assert.equal(guard.isCurrent(requestA, projectA), false);
});

test("the captured context also protects against a context change without a new request", () => {
  const guard = new SchemaRequestGuard();
  const requestA = guard.begin(projectA);

  assert.equal(guard.isCurrent(requestA, projectB), false);
});