test: replace indexOf with includes

Start the transition to Array.prototype.includes() and
String.prototype.includes().  This commit refactors most of the
comparisons of Array.prototype.indexOf() and String.prototype.indexOf()
return values with -1 to the former methods in tests.

PR-URL: #12604
Refs: #12586
Reviewed-By: Alexey Orlenko <eaglexrlnk@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>

test/inspector/test-inspector.js

@@ -34,7 +34,7 @@ function checkBadPath(err, response) {
 function expectMainScriptSource(result) {
   const expected = helper.mainScriptSource();
   const source = result['scriptSource'];
-  assert(source && (source.indexOf(expected) >= 0),
+  assert(source && (source.includes(expected)),
          'Script source is wrong: ' + source);
 }
 

test/parallel/test-child-process-default-options.js

@@ -23,6 +23,6 @@ child.stdout.on('data', function(chunk) {
 });
 
 process.on('exit', function() {
-  assert.ok(response.indexOf('HELLO=WORLD') >= 0,
+  assert.ok(response.includes('HELLO=WORLD'),
             'spawn did not use process.env as default');
 });

test/parallel/test-child-process-env.js

@@ -29,6 +29,6 @@ child.stdout.on('data', function(chunk) {
 });
 
 process.on('exit', function() {
-  assert.ok(response.indexOf('HELLO=WORLD') >= 0);
-  assert.ok(response.indexOf('FOO=BAR') >= 0);
+  assert.ok(response.includes('HELLO=WORLD'));
+  assert.ok(response.includes('FOO=BAR'));
 });

test/parallel/test-child-process-exec-env.js

@@ -35,5 +35,5 @@ process.on('exit', function() {
   console.log('response: ', response);
   assert.strictEqual(1, success_count);
   assert.strictEqual(0, error_count);
-  assert.ok(response.indexOf('HELLO=WORLD') >= 0);
+  assert.ok(response.includes('HELLO=WORLD'));
 });

test/parallel/test-child-process-spawnsync-input.js

@@ -31,7 +31,7 @@ function verifyBufOutput(ret) {
   assert.deepStrictEqual(ret.stderr, msgErrBuf);
 }
 
-if (process.argv.indexOf('spawnchild') !== -1) {
+if (process.argv.includes('spawnchild')) {
   switch (process.argv[3]) {
     case '1':
       ret = spawnSync(process.execPath, args, { stdio: 'inherit' });

test/parallel/test-domain-throw-error-then-throw-from-uncaught-exception-handler.js

@@ -17,7 +17,7 @@ const RAN_UNCAUGHT_EXCEPTION_HANDLER_EXIT_CODE = 42;
 
 if (process.argv[2] === 'child') {
   process.on('uncaughtException', common.mustCall(function onUncaught() {
-    if (process.execArgv.indexOf('--abort-on-uncaught-exception') !== -1) {
+    if (process.execArgv.includes('--abort-on-uncaught-exception')) {
       // When passing --abort-on-uncaught-exception to the child process,
       // we want to make sure that this handler (the process' uncaughtException
       // event handler) wasn't called. Unfortunately we can't parse the child

test/parallel/test-domain-with-abort-on-uncaught-exception.js

@@ -43,11 +43,11 @@ if (process.argv[2] === 'child') {
   d.on('error', function(err) {
     // Swallowing the error on purpose if 'throwInDomainErrHandler' is not
     // set
-    if (process.argv.indexOf('throwInDomainErrHandler') !== -1) {
+    if (process.argv.includes('throwInDomainErrHandler')) {
       // If useTryCatch is set, wrap the throw in a try/catch block.
       // This is to make sure that a caught exception does not trigger
       // an abort.
-      if (process.argv.indexOf('useTryCatch') !== -1) {
+      if (process.argv.includes('useTryCatch')) {
         try {
           throw new Error(domainErrHandlerExMessage);
         } catch (e) {

test/parallel/test-error-reporting.js

@@ -15,7 +15,7 @@ function errExec(script, callback) {
     assert.ok(stderr.split('\n').length > 2);
 
     // Assert the script is mentioned in error output.
-    assert.ok(stderr.indexOf(script) >= 0);
+    assert.ok(stderr.includes(script));
 
     // Proxy the args for more tests.
     callback(err, stdout, stderr);

test/parallel/test-fs-error-messages.js

@@ -13,66 +13,66 @@ const existingDir2 = path.join(common.fixturesDir, 'keys');
 
 fs.stat(fn, function(err) {
   assert.strictEqual(fn, err.path);
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 });
 
 fs.lstat(fn, function(err) {
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 });
 
 fs.readlink(fn, function(err) {
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 });
 
 fs.link(fn, 'foo', function(err) {
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 });
 
 fs.link(existingFile, existingFile2, function(err) {
-  assert.ok(0 <= err.message.indexOf(existingFile));
-  assert.ok(0 <= err.message.indexOf(existingFile2));
+  assert.ok(err.message.includes(existingFile));
+  assert.ok(err.message.includes(existingFile2));
 });
 
 fs.symlink(existingFile, existingFile2, function(err) {
-  assert.ok(0 <= err.message.indexOf(existingFile));
-  assert.ok(0 <= err.message.indexOf(existingFile2));
+  assert.ok(err.message.includes(existingFile));
+  assert.ok(err.message.includes(existingFile2));
 });
 
 fs.unlink(fn, function(err) {
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 });
 
 fs.rename(fn, 'foo', function(err) {
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 });
 
 fs.rename(existingDir, existingDir2, function(err) {
-  assert.ok(0 <= err.message.indexOf(existingDir));
-  assert.ok(0 <= err.message.indexOf(existingDir2));
+  assert.ok(err.message.includes(existingDir));
+  assert.ok(err.message.includes(existingDir2));
 });
 
 fs.rmdir(fn, function(err) {
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 });
 
 fs.mkdir(existingFile, 0o666, function(err) {
-  assert.ok(0 <= err.message.indexOf(existingFile));
+  assert.ok(err.message.includes(existingFile));
 });
 
 fs.rmdir(existingFile, function(err) {
-  assert.ok(0 <= err.message.indexOf(existingFile));
+  assert.ok(err.message.includes(existingFile));
 });
 
 fs.chmod(fn, 0o666, function(err) {
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 });
 
 fs.open(fn, 'r', 0o666, function(err) {
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 });
 
 fs.readFile(fn, function(err) {
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 });
 
 // Sync
@@ -85,122 +85,122 @@ try {
   fs.statSync(fn);
 } catch (err) {
   errors.push('stat');
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 }
 
 try {
   ++expected;
   fs.mkdirSync(existingFile, 0o666);
 } catch (err) {
   errors.push('mkdir');
-  assert.ok(0 <= err.message.indexOf(existingFile));
+  assert.ok(err.message.includes(existingFile));
 }
 
 try {
   ++expected;
   fs.chmodSync(fn, 0o666);
 } catch (err) {
   errors.push('chmod');
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 }
 
 try {
   ++expected;
   fs.lstatSync(fn);
 } catch (err) {
   errors.push('lstat');
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 }
 
 try {
   ++expected;
   fs.readlinkSync(fn);
 } catch (err) {
   errors.push('readlink');
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 }
 
 try {
   ++expected;
   fs.linkSync(fn, 'foo');
 } catch (err) {
   errors.push('link');
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 }
 
 try {
   ++expected;
   fs.linkSync(existingFile, existingFile2);
 } catch (err) {
   errors.push('link');
-  assert.ok(0 <= err.message.indexOf(existingFile));
-  assert.ok(0 <= err.message.indexOf(existingFile2));
+  assert.ok(err.message.includes(existingFile));
+  assert.ok(err.message.includes(existingFile2));
 }
 
 try {
   ++expected;
   fs.symlinkSync(existingFile, existingFile2);
 } catch (err) {
   errors.push('symlink');
-  assert.ok(0 <= err.message.indexOf(existingFile));
-  assert.ok(0 <= err.message.indexOf(existingFile2));
+  assert.ok(err.message.includes(existingFile));
+  assert.ok(err.message.includes(existingFile2));
 }
 
 try {
   ++expected;
   fs.unlinkSync(fn);
 } catch (err) {
   errors.push('unlink');
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 }
 
 try {
   ++expected;
   fs.rmdirSync(fn);
 } catch (err) {
   errors.push('rmdir');
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 }
 
 try {
   ++expected;
   fs.rmdirSync(existingFile);
 } catch (err) {
   errors.push('rmdir');
-  assert.ok(0 <= err.message.indexOf(existingFile));
+  assert.ok(err.message.includes(existingFile));
 }
 
 try {
   ++expected;
   fs.openSync(fn, 'r');
 } catch (err) {
   errors.push('opens');
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 }
 
 try {
   ++expected;
   fs.renameSync(fn, 'foo');
 } catch (err) {
   errors.push('rename');
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 }
 
 try {
   ++expected;
   fs.renameSync(existingDir, existingDir2);
 } catch (err) {
   errors.push('rename');
-  assert.ok(0 <= err.message.indexOf(existingDir));
-  assert.ok(0 <= err.message.indexOf(existingDir2));
+  assert.ok(err.message.includes(existingDir));
+  assert.ok(err.message.includes(existingDir2));
 }
 
 try {
   ++expected;
   fs.readdirSync(fn);
 } catch (err) {
   errors.push('readdir');
-  assert.ok(0 <= err.message.indexOf(fn));
+  assert.ok(err.message.includes(fn));
 }
 
 process.on('exit', function() {

test/parallel/test-http-client-parse-error.js

@@ -26,7 +26,7 @@ net.createServer(function(c) {
       path: '/'
     }).on('error', function(e) {
       console.log('got error from client');
-      assert.ok(e.message.indexOf('Parse Error') >= 0);
+      assert.ok(e.message.includes('Parse Error'));
       assert.strictEqual(e.code, 'HPE_INVALID_CONSTANT');
       parseErrors++;
     }).end();

test/parallel/test-http-extra-response.js

@@ -28,7 +28,7 @@ const server = net.createServer(function(socket) {
   socket.on('data', function(chunk) {
     postBody += chunk;
 
-    if (postBody.indexOf('\r\n') > -1) {
+    if (postBody.includes('\r\n')) {
       socket.write(fullResponse);
       // omg, I wrote the response twice, what a terrible HTTP server I am.
       socket.end(fullResponse);

test/parallel/test-http-get-pipeline-problem.js

@@ -72,7 +72,7 @@ function checkFiles() {
 
   for (let i = 0; i < total; i++) {
     const fn = i + '.jpg';
-    assert.ok(files.indexOf(fn) >= 0, "couldn't find '" + fn + "'");
+    assert.ok(files.includes(fn), "couldn't find '" + fn + "'");
     const stat = fs.statSync(common.tmpDir + '/' + fn);
     assert.strictEqual(image.length, stat.size,
                        "size doesn't match on '" + fn +

test/parallel/test-https-strict.js

@@ -111,11 +111,11 @@ function makeReq(path, port, error, host, ca) {
     options.agent = agent0;
   } else {
     if (!Array.isArray(ca)) ca = [ca];
-    if (-1 !== ca.indexOf(ca1) && -1 !== ca.indexOf(ca2)) {
+    if (ca.includes(ca1) && ca.includes(ca2)) {
       options.agent = agent3;
-    } else if (-1 !== ca.indexOf(ca1)) {
+    } else if (ca.includes(ca1)) {
       options.agent = agent1;
-    } else if (-1 !== ca.indexOf(ca2)) {
+    } else if (ca.includes(ca2)) {
       options.agent = agent2;
     } else {
       options.agent = agent0;

test/parallel/test-intl.js

@@ -16,7 +16,7 @@ const haveIntl = (global.Intl !== undefined);
 // Else, returns false
 function haveLocale(loc) {
   const locs = process.config.variables.icu_locales.split(',');
-  return locs.indexOf(loc) !== -1;
+  return locs.includes(loc);
 }
 
 if (!haveIntl) {

test/parallel/test-listen-fd-detached-inherit.js

@@ -29,7 +29,7 @@ function test() {
   let json = '';
   parent.stdout.on('data', function(c) {
     json += c.toString();
-    if (json.indexOf('\n') !== -1) next();
+    if (json.includes('\n')) next();
   });
   function next() {
     console.error('output from parent = %s', json);

test/parallel/test-listen-fd-detached.js

@@ -29,7 +29,7 @@ function test() {
   let json = '';
   parent.stdout.on('data', function(c) {
     json += c.toString();
-    if (json.indexOf('\n') !== -1) next();
+    if (json.includes('\n')) next();
   });
   function next() {
     console.error('output from parent = %s', json);

test/parallel/test-module-globalpaths-nodepath.js

@@ -19,8 +19,8 @@ if (common.isWindows) {
 
 mod._initPaths();
 
-assert.ok(mod.globalPaths.indexOf(partA) !== -1);
-assert.ok(mod.globalPaths.indexOf(partB) !== -1);
-assert.ok(mod.globalPaths.indexOf(partC) === -1);
+assert.ok(mod.globalPaths.includes(partA));
+assert.ok(mod.globalPaths.includes(partB));
+assert.ok(!mod.globalPaths.includes(partC));
 
 assert.ok(Array.isArray(mod.globalPaths));

test/parallel/test-net-eaddrinuse.js

@@ -9,7 +9,7 @@ const server2 = net.createServer(function(socket) {
 });
 server1.listen(0, function() {
   server2.on('error', function(error) {
-    assert.strictEqual(true, error.message.indexOf('EADDRINUSE') >= 0);
+    assert.strictEqual(true, error.message.includes('EADDRINUSE'));
     server1.close();
   });
   server2.listen(this.address().port);