test for PnP resolver

tests/local/pnp/api.js

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+export default {}

tests/local/pnp/disable.js

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+delete process.versions.pnp

tests/local/pnp/enable.js

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+import module from 'node:module'
+
+async function resolve (specifier, context, next) {
+  return next(
+    specifier === 'pnpapi'
+      ? '../tests/local/pnp/api.js'
+      : specifier, context)
+}
+
+module.register && module.register(`
+data:text/javascript,
+export ${encodeURIComponent(resolve)}`.slice(1))
+
+process.versions.pnp = '3'

tests/tests-node/esmock.node.resolver-pnp.test.js

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+import test from 'node:test'
+import assert from 'node:assert/strict'
+import module from 'node:module'
+import { fileURLToPath } from 'node:url'
+import resolvewithplus from 'resolvewithplus'
+import '../local/pnp/enable.js'
+import esmock from 'esmock'
+import '../local/pnp/disable.js'
+import pnpapi from '../local/pnp/api.js'
+
+const resolver = (id, parent) => {
+  const url = resolvewithplus(id, parent)
+  return url !== null ? fileURLToPath(url) : null
+}
+
+test.beforeEach(() => {
+  delete pnpapi.resolveRequest
+})
+
+test('should work with pnp resolver', async (t) => {
+  if (!module.register)
+    return assert.ok('skip test')
+
+  pnpapi.resolveRequest = t.mock.fn(resolver)
+
+  const main = await esmock('../local/main.js', {
+    '../local/mainUtil.js': {
+      createString: () => 'test string'
+    }
+  })
+
+  assert.equal(typeof main, 'function')
+  assert.strictEqual(main(), 'main string, test string')
+  assert.equal(pnpapi.resolveRequest.mock.callCount(), 2)
+})