test: make tests cwd-independent

PR-URL: https://github.com/nodejs/node/pull/12812
Reviewed-By: Alexey Orlenko <eaglexrlnk@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

test/doctool/test-doctool-html.js

@@ -105,7 +105,7 @@ testData.forEach((item) => {
         {
           input: preprocessed,
           filename: 'foo',
-          template: 'doc/template.html',
+          template: path.resolve(__dirname, '../../doc/template.html'),
           nodeVersion: process.version,
           analytics: item.analyticsId,
         },

test/parallel/test-cli-eval.js

@@ -94,6 +94,8 @@ child.exec(`${nodejs} --print "os.platform()"`,
            }));
 
 // Module path resolve bug regression test.
+const cwd = process.cwd();
+process.chdir(path.resolve(__dirname, '../../'));
 child.exec(`${nodejs} --eval "require('./test/parallel/test-cli-eval.js')"`,
            common.mustCall((err, stdout, stderr) => {
              assert.strictEqual(err.code, 42);
@@ -101,6 +103,7 @@ child.exec(`${nodejs} --eval "require('./test/parallel/test-cli-eval.js')"`,
                stdout, 'Loaded as a module, exiting with status code 42.\n');
              assert.strictEqual(stderr, '');
            }));
+process.chdir(cwd);
 
 // Missing argument should not crash.
 child.exec(`${nodejs} -e`, common.mustCall((err, stdout, stderr) => {

test/parallel/test-process-chdir.js

@@ -5,6 +5,7 @@ const assert = require('assert');
 const fs = require('fs');
 const path = require('path');
 
+process.chdir('..');
 assert.notStrictEqual(process.cwd(), __dirname);
 process.chdir(__dirname);
 assert.strictEqual(process.cwd(), __dirname);