test: add get/set effective uid/gid tests

3c92ca2 should have had tests to go along with it. This adds tests for the following functions: * `process.geteuid()` * `process.seteuid()` * `process.getegid()` * `process.setegid()` PR-URL: #14091 Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Claudio Rodriguez <[email protected]> Reviewed-By: Refael Ackermann <[email protected]> Reviewed-By: James M Snell <[email protected]>

Author: evanlucas

test/parallel/test-process-geteuid-getegid.js

@@ -0,0 +1,49 @@
+'use strict';
+
+constcommon=require('../common');
+constassert=require('assert');
+
+if(common.isWindows){
+assert.strictEqual(process.geteuid,undefined);
+assert.strictEqual(process.getegid,undefined);
+assert.strictEqual(process.seteuid,undefined);
+assert.strictEqual(process.setegid,undefined);
+return;
+}
+
+assert.throws(()=>{
+process.seteuid({});
+},/^TypeError:seteuidargumentmustbeanumberorstring$/);
+
+assert.throws(()=>{
+process.seteuid('fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf');
+},/^Error:seteuiduseriddoesnotexist$/);
+
+// If we're not running as super user...
+if(process.getuid()!==0){
+assert.doesNotThrow(()=>{
+process.getegid();
+process.geteuid();
+});
+
+assert.throws(()=>{
+process.setegid('nobody');
+},/^Error:(?:EPERM,.+|setegidgroupiddoesnotexist)$/);
+
+assert.throws(()=>{
+process.seteuid('nobody');
+},/^Error:(?:EPERM,.+|seteuiduseriddoesnotexist)$/);
+
+return;
+}
+
+// If we are running as super user...
+constoldgid=process.getegid();
+process.setegid('nobody');
+constnewgid=process.getegid();
+assert.notStrictEqual(newgid,oldgid);
+
+constolduid=process.geteuid();
+process.seteuid('nobody');
+constnewuid=process.geteuid();
+assert.notStrictEqual(newuid,olduid);