test: add process.assert's test

PR-URL: #10911
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Italo A. Casas <me@italoacasas.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/parallel/test-process-assert.js

@@ -0,0 +1,11 @@
+'use strict';
+require('../common');
+const assert = require('assert');
+
+assert.strictEqual(process.assert(1, 'error'), undefined);
+assert.throws(() => {
+  process.assert(undefined, 'errorMessage');
+}, /^Error: errorMessage$/);
+assert.throws(() => {
+  process.assert(false);
+}, /^Error: assertion error$/);