agentic-dev/packages/core-eslint/rules/no-relative-parent-import-in-tests.test.js

import { describe, it } from "vitest";
import { RuleTester } from "eslint";
import rule from "./no-relative-parent-import-in-tests.js";

const tester = new RuleTester({
  languageOptions: { ecmaVersion: "latest", sourceType: "module" },
});

const featureTest = "/repo/packages/auth/src/di/container.test.ts";
const featureSrc = "/repo/packages/auth/src/di/container.ts";
const coreTest = "/repo/packages/core-audit/src/di/bind-audit.test.ts";

describe("no-relative-parent-import-in-tests", () => {
  it("passes when a feature test uses the @/ alias", () => {
    tester.run("no-relative-parent-import-in-tests", rule, {
      valid: [
        {
          filename: featureTest,
          code: `import { x } from "@/infrastructure/x";`,
        },
      ],
      invalid: [],
    });
  });

  it("passes for same-directory ./ imports", () => {
    tester.run("no-relative-parent-import-in-tests", rule, {
      valid: [
        { filename: featureTest, code: `import { x } from "./container";` },
      ],
      invalid: [],
    });
  });

  it("fires when a feature test imports via ../", () => {
    tester.run("no-relative-parent-import-in-tests", rule, {
      valid: [],
      invalid: [
        {
          filename: featureTest,
          code: `import { x } from "../infrastructure/x";`,
          errors: [
            {
              messageId: "relativeParentImport",
              data: { source: "../infrastructure/x" },
            },
          ],
        },
      ],
    });
  });

  it("ignores ../ imports in non-test source files", () => {
    tester.run("no-relative-parent-import-in-tests", rule, {
      valid: [
        {
          filename: featureSrc,
          code: `import { x } from "../infrastructure/x";`,
        },
      ],
      invalid: [],
    });
  });

  it("ignores core-package test files (governed by their own templates)", () => {
    tester.run("no-relative-parent-import-in-tests", rule, {
      valid: [
        { filename: coreTest, code: `import { x } from "../noop-audit-log";` },
      ],
      invalid: [],
    });
  });
});