test: refactor mkdtemp test and added async

This test refactored the original test for mkdtempSync prefix validation and added the test also for the async function mkdtemp.
nodejs · lucamaraschi · Mar 27, 2017 · Mar 28, 2017 · daa39cd9e08b45b09a5c13a2d0384413861aa2c9
commit daa39cd9e08b45b09a5c13a2d0384413861aa2c9
diff --git a/test/parallel/test-fs-mkdtemp-prefix-check.js b/test/parallel/test-fs-mkdtemp-prefix-check.js
@@ -0,0 +1,25 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const fs = require('fs');
+
+const expectedError = /^TypeError: filename prefix is required$/;
+const prefixValues = [undefined, null, 0, true, false, 1, ''];
+
+function fail(value) {
+  assert.throws(
+    () => fs.mkdtempSync(value, {}),
+    expectedError
+  );
+}
+
+function failAsync(value) {
+  assert.throws(
+    () => fs.mkdtemp(value, common.mustNotCall()), expectedError
+  );
+}
+
+prefixValues.forEach((prefixValue) => {
+  fail(prefixValue);
+  failAsync(prefixValue);
+});
diff --git a/test/parallel/test-mkdtemp-sync-prefix-check.js b/test/parallel/test-mkdtemp-sync-prefix-check.js