"Duplicate test title" if running multiple tests on the same code (with different options)

[RebeccaStevens]

The 3 tests in this example would all have the same name and thus cause an error when running ava.

import test from "ava";
import RuleTester from "eslint-ava-rule-tester";

import { name, rule } from "./path/to/rule";

const ruleTester = new RuleTester(test, { /* ... */ });

const filename = "file.ts";
const code = "// some code";

ruleTester.run(name, rule, {
  valid: [
    {
      filename,
      code,
      options: [{ flag1: true }],
    },
    {
      filename,
      code,
      options: [{ flag2: true }],
    }
  ],
  invalid: [
    {
      filename,
      code,
      options: [{ flag1: true, flag2: true }],
      errors: [
        // ...
      ],
    }
  ],
});

[RebeccaStevens]

Workaround:

• create a wrapper for ava's test function that ensures a unique name

const testNames = new Map();

function testWrapper(title: string, callback: Implementation<unknown>) {
  const count = (testNames.get(title) ?? 0) + 1;
  testNames.set(title, count);
  return test(`${title} - ${count}`, callback);
}

• pass the wrapper function to the RuleTester

const ruleTester = new RuleTester(testWrapper, { /* ... */ });

[fisker]

Fixed by #27