test: remove common.fileExists()

common.fileExists() can be replaced with fs.existsSync(). PR-URL: #22151 Reviewed-By: Richard Lau <riclau@uk.ibm.com> Reviewed-By: Weijia Wang <starkwang@126.com> Reviewed-By: Jon Moss <me@jonathanmoss.me> Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com> Reviewed-By: Tobias Nießen <tniessen@tnie.de> Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
nodejs · Aug 15, 2018 · bdc644f · bdc644f
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diff --git a/test/common/README.md b/test/common/README.md
@@ -121,12 +121,6 @@ Tests whether `name`, `expected`, and `code` are part of a raised warning. If
 an expected warning does not have a code then `common.noWarnCode` can be used
 to indicate this.
 
-### fileExists(pathname)
-* pathname [&lt;string>]
-* return [&lt;boolean>]
-
-Checks if `pathname` exists
-
 ### getArrayBufferViews(buf)
 * `buf` [&lt;Buffer>]
 * return [&lt;ArrayBufferView&#91;&#93;>]

diff --git a/test/common/index.js b/test/common/index.js
@@ -477,17 +477,8 @@ exports.hasMultiLocalhost = function hasMultiLocalhost() {
   return ret === 0;
 };
 
-exports.fileExists = function(pathname) {
-  try {
-    fs.accessSync(pathname);
-    return true;
-  } catch (err) {
-    return false;
-  }
-};
-
 exports.skipIfEslintMissing = function() {
-  if (!exports.fileExists(
+  if (!fs.existsSync(
     path.join(__dirname, '..', '..', 'tools', 'node_modules', 'eslint')
   )) {
     exports.skip('missing ESLint');

diff --git a/test/common/index.mjs b/test/common/index.mjs
@@ -33,7 +33,6 @@ const {
   mustCallAtLeast,
   mustCallAsync,
   hasMultiLocalhost,
-  fileExists,
   skipIfEslintMissing,
   canCreateSymLink,
   getCallSite,
@@ -92,7 +91,6 @@ export {
   mustCallAtLeast,
   mustCallAsync,
   hasMultiLocalhost,
-  fileExists,
   skipIfEslintMissing,
   canCreateSymLink,
   getCallSite,

diff --git a/test/parallel/test-child-process-spawn-error.js b/test/parallel/test-child-process-spawn-error.js
@@ -23,10 +23,11 @@
 const common = require('../common');
 const spawn = require('child_process').spawn;
 const assert = require('assert');
+const fs = require('fs');
 
 const enoentPath = 'foo123';
 const spawnargs = ['bar'];
-assert.strictEqual(common.fileExists(enoentPath), false);
+assert.strictEqual(fs.existsSync(enoentPath), false);
 
 const enoentChild = spawn(enoentPath, spawnargs);
 enoentChild.on('error', common.mustCall(function(err) {

diff --git a/test/parallel/test-fs-existssync-false.js b/test/parallel/test-fs-existssync-false.js
@@ -1,5 +1,5 @@
 'use strict';
-const common = require('../common');
+require('../common');
 const tmpdir = require('../common/tmpdir');
 
 // This test ensures that fs.existsSync doesn't incorrectly return false.
@@ -28,7 +28,7 @@ for (let i = 0; i < 50; i++) {
 }
 
 // Test if file exists synchronously
-assert(common.fileExists(dir), 'Directory is not accessible');
+assert(fs.existsSync(dir), 'Directory is not accessible');
 
 // Test if file exists asynchronously
 fs.access(dir, function(err) {

diff --git a/test/parallel/test-fs-mkdir-rmdir.js b/test/parallel/test-fs-mkdir-rmdir.js
@@ -10,19 +10,19 @@ const d = path.join(tmpdir.path, 'dir');
 tmpdir.refresh();
 
 // Make sure the directory does not exist
-assert(!common.fileExists(d));
+assert(!fs.existsSync(d));
 // Create the directory now
 fs.mkdirSync(d);
 // Make sure the directory exists
-assert(common.fileExists(d));
+assert(fs.existsSync(d));
 // Try creating again, it should fail with EEXIST
 assert.throws(function() {
   fs.mkdirSync(d);
 }, /EEXIST: file already exists, mkdir/);
 // Remove the directory now
 fs.rmdirSync(d);
 // Make sure the directory does not exist
-assert(!common.fileExists(d));
+assert(!fs.existsSync(d));
 
 // Similarly test the Async version
 fs.mkdir(d, 0o666, common.mustCall(function(err) {

diff --git a/test/parallel/test-fs-mkdir.js b/test/parallel/test-fs-mkdir.js
@@ -32,7 +32,7 @@ tmpdir.refresh();
 
   fs.mkdir(pathname, common.mustCall(function(err) {
     assert.strictEqual(err, null);
-    assert.strictEqual(common.fileExists(pathname), true);
+    assert.strictEqual(fs.existsSync(pathname), true);
   }));
 }
 
@@ -41,7 +41,7 @@ tmpdir.refresh();
 
   fs.mkdir(pathname, 0o777, common.mustCall(function(err) {
     assert.strictEqual(err, null);
-    assert.strictEqual(common.fileExists(pathname), true);
+    assert.strictEqual(fs.existsSync(pathname), true);
   }));
 }
 
@@ -50,7 +50,7 @@ tmpdir.refresh();
 
   fs.mkdirSync(pathname);
 
-  const exists = common.fileExists(pathname);
+  const exists = fs.existsSync(pathname);
   assert.strictEqual(exists, true);
 }
 

diff --git a/test/parallel/test-fs-mkdtemp.js b/test/parallel/test-fs-mkdtemp.js
@@ -11,16 +11,16 @@ tmpdir.refresh();
 const tmpFolder = fs.mkdtempSync(path.join(tmpdir.path, 'foo.'));
 
 assert.strictEqual(path.basename(tmpFolder).length, 'foo.XXXXXX'.length);
-assert(common.fileExists(tmpFolder));
+assert(fs.existsSync(tmpFolder));
 
 const utf8 = fs.mkdtempSync(path.join(tmpdir.path, '\u0222abc.'));
 assert.strictEqual(Buffer.byteLength(path.basename(utf8)),
                    Buffer.byteLength('\u0222abc.XXXXXX'));
-assert(common.fileExists(utf8));
+assert(fs.existsSync(utf8));
 
 function handler(err, folder) {
   assert.ifError(err);
-  assert(common.fileExists(folder));
+  assert(fs.existsSync(folder));
   assert.strictEqual(this, undefined);
 }
 

diff --git a/test/parallel/test-fs-symlink-dir-junction.js b/test/parallel/test-fs-symlink-dir-junction.js
@@ -47,8 +47,8 @@ fs.symlink(linkData, linkPath, 'junction', common.mustCall(function(err) {
 
       fs.unlink(linkPath, common.mustCall(function(err) {
         assert.ifError(err);
-        assert(!common.fileExists(linkPath));
-        assert(common.fileExists(linkData));
+        assert(!fs.existsSync(linkPath));
+        assert(fs.existsSync(linkData));
       }));
     }));
   }));

diff --git a/test/parallel/test-require-exceptions.js b/test/parallel/test-require-exceptions.js
@@ -20,8 +20,9 @@
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 'use strict';
-const common = require('../common');
+require('../common');
 const assert = require('assert');
+const fs = require('fs');
 const fixtures = require('../common/fixtures');
 
 // A module with an error in it should throw
@@ -52,5 +53,5 @@ function assertModuleNotFound(path) {
 }
 
 function assertExists(fixture) {
-  assert(common.fileExists(fixtures.path(fixture)));
+  assert(fs.existsSync(fixtures.path(fixture)));
 }
diff --git a/test/parallel/test-trace-events-all.js b/test/parallel/test-trace-events-all.js
@@ -19,7 +19,7 @@ const proc = cp.spawn(process.execPath,
                       [ '--trace-events-enabled', '-e', CODE ]);
 
 proc.once('exit', common.mustCall(() => {
-  assert(common.fileExists(FILE_NAME));
+  assert(fs.existsSync(FILE_NAME));
   fs.readFile(FILE_NAME, common.mustCall((err, data) => {
     const traces = JSON.parse(data.toString()).traceEvents;
     assert(traces.length > 0);

diff --git a/test/parallel/test-trace-events-api.js b/test/parallel/test-trace-events-api.js
@@ -130,7 +130,7 @@ if (isChild) {
   proc.once('exit', common.mustCall(() => {
     const file = path.join(tmpdir.path, 'node_trace.1.log');
 
-    assert(common.fileExists(file));
+    assert(fs.existsSync(file));
     fs.readFile(file, common.mustCall((err, data) => {
       const traces = JSON.parse(data.toString()).traceEvents
         .filter((trace) => trace.cat !== '__metadata');

diff --git a/test/parallel/test-trace-events-async-hooks.js b/test/parallel/test-trace-events-async-hooks.js
@@ -21,7 +21,7 @@ const proc = cp.spawn(process.execPath,
                         '-e', CODE ]);
 
 proc.once('exit', common.mustCall(() => {
-  assert(common.fileExists(FILE_NAME));
+  assert(fs.existsSync(FILE_NAME));
   fs.readFile(FILE_NAME, common.mustCall((err, data) => {
     const traces = JSON.parse(data.toString()).traceEvents;
     assert(traces.length > 0);

diff --git a/test/parallel/test-trace-events-binding.js b/test/parallel/test-trace-events-binding.js
@@ -32,7 +32,7 @@ const proc = cp.spawn(process.execPath,
                         '-e', CODE ]);
 
 proc.once('exit', common.mustCall(() => {
-  assert(common.fileExists(FILE_NAME));
+  assert(fs.existsSync(FILE_NAME));
   fs.readFile(FILE_NAME, common.mustCall((err, data) => {
     const traces = JSON.parse(data.toString()).traceEvents
       .filter((trace) => trace.cat !== '__metadata');

diff --git a/test/parallel/test-trace-events-bootstrap.js b/test/parallel/test-trace-events-bootstrap.js
@@ -43,7 +43,7 @@ if (process.argv[2] === 'child') {
   proc.once('exit', common.mustCall(() => {
     const file = path.join(tmpdir.path, 'node_trace.1.log');
 
-    assert(common.fileExists(file));
+    assert(fs.existsSync(file));
     fs.readFile(file, common.mustCall((err, data) => {
       const traces = JSON.parse(data.toString()).traceEvents
         .filter((trace) => trace.cat !== '__metadata');

diff --git a/test/parallel/test-trace-events-file-pattern.js b/test/parallel/test-trace-events-file-pattern.js
@@ -25,7 +25,7 @@ const proc = cp.spawn(process.execPath, [
 proc.once('exit', common.mustCall(() => {
   const expectedFilename = `${proc.pid}-1-${proc.pid}-1.tracing.log`;
 
-  assert(common.fileExists(expectedFilename));
+  assert(fs.existsSync(expectedFilename));
   fs.readFile(expectedFilename, common.mustCall((err, data) => {
     const traces = JSON.parse(data.toString()).traceEvents;
     assert(traces.length > 0);

diff --git a/test/parallel/test-trace-events-fs-sync.js b/test/parallel/test-trace-events-fs-sync.js
@@ -139,7 +139,7 @@ for (const tr in tests) {
   assert.strictEqual(proc.status, 0, `${tr}:\n${util.inspect(proc)}`);
 
   // Confirm that trace log file is created.
-  assert(common.fileExists(traceFile));
+  assert(fs.existsSync(traceFile));
   const data = fs.readFileSync(traceFile);
   const traces = JSON.parse(data.toString()).traceEvents;
   assert(traces.length > 0);

diff --git a/test/parallel/test-trace-events-metadata.js b/test/parallel/test-trace-events-metadata.js
@@ -21,7 +21,7 @@ const proc = cp.spawn(process.execPath,
                         '--title=bar',
                         '-e', CODE ]);
 proc.once('exit', common.mustCall(() => {
-  assert(common.fileExists(FILE_NAME));
+  assert(fs.existsSync(FILE_NAME));
   fs.readFile(FILE_NAME, common.mustCall((err, data) => {
     const traces = JSON.parse(data.toString()).traceEvents
       .filter((trace) => trace.cat === '__metadata');

diff --git a/test/parallel/test-trace-events-none.js b/test/parallel/test-trace-events-none.js
@@ -21,7 +21,7 @@ const proc_no_categories = cp.spawn(
 );
 
 proc_no_categories.once('exit', common.mustCall(() => {
-  assert(common.fileExists(FILE_NAME));
+  assert(fs.existsSync(FILE_NAME));
   // Only __metadata categories should have been emitted.
   fs.readFile(FILE_NAME, common.mustCall((err, data) => {
     assert.ok(JSON.parse(data.toString()).traceEvents.every(

diff --git a/test/parallel/test-trace-events-perf.js b/test/parallel/test-trace-events-perf.js
@@ -50,7 +50,7 @@ if (process.argv[2] === 'child') {
   proc.once('exit', common.mustCall(() => {
     const file = path.join(tmpdir.path, 'node_trace.1.log');
 
-    assert(common.fileExists(file));
+    assert(fs.existsSync(file));
     fs.readFile(file, common.mustCall((err, data) => {
       const traces = JSON.parse(data.toString()).traceEvents
         .filter((trace) => trace.cat !== '__metadata');

diff --git a/test/parallel/test-trace-events-process-exit.js b/test/parallel/test-trace-events-process-exit.js
@@ -19,7 +19,7 @@ const proc = cp.spawn(process.execPath,
                         '-e', 'process.exit()' ]);
 
 proc.once('exit', common.mustCall(() => {
-  assert(common.fileExists(FILE_NAME));
+  assert(fs.existsSync(FILE_NAME));
   fs.readFile(FILE_NAME, common.mustCall((err, data) => {
     const traces = JSON.parse(data.toString()).traceEvents;
     assert(traces.length > 0);

diff --git a/test/parallel/test-trace-events-v8.js b/test/parallel/test-trace-events-v8.js
@@ -21,7 +21,7 @@ const proc = cp.spawn(process.execPath,
                         '-e', CODE ]);
 
 proc.once('exit', common.mustCall(() => {
-  assert(common.fileExists(FILE_NAME));
+  assert(fs.existsSync(FILE_NAME));
   fs.readFile(FILE_NAME, common.mustCall((err, data) => {
     const traces = JSON.parse(data.toString()).traceEvents;
     assert(traces.length > 0);

diff --git a/test/parallel/test-trace-events-vm.js b/test/parallel/test-trace-events-vm.js
@@ -33,7 +33,7 @@ if (process.argv[2] === 'child') {
   proc.once('exit', common.mustCall(() => {
     const file = path.join(tmpdir.path, 'node_trace.1.log');
 
-    assert(common.fileExists(file));
+    assert(fs.existsSync(file));
     fs.readFile(file, common.mustCall((err, data) => {
       const traces = JSON.parse(data.toString()).traceEvents
         .filter((trace) => trace.cat !== '__metadata');

diff --git a/test/parallel/test-trace-events-worker-metadata.js b/test/parallel/test-trace-events-worker-metadata.js
@@ -19,7 +19,7 @@ if (isMainThread) {
                           '--trace-event-categories', 'node',
                           '-e', CODE ]);
   proc.once('exit', common.mustCall(() => {
-    assert(common.fileExists(FILE_NAME));
+    assert(fs.existsSync(FILE_NAME));
     fs.readFile(FILE_NAME, common.mustCall((err, data) => {
       const traces = JSON.parse(data.toString()).traceEvents;
       assert(traces.length > 0);

diff --git a/test/pummel/test-fs-watch-file-slow.js b/test/pummel/test-fs-watch-file-slow.js
@@ -20,7 +20,7 @@
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 'use strict';
-const common = require('../common');
+require('../common');
 const assert = require('assert');
 const path = require('path');
 const fs = require('fs');
@@ -42,14 +42,14 @@ fs.watchFile(FILENAME, { interval: TIMEOUT - 250 }, function(curr, prev) {
   console.log([curr, prev]);
   switch (++nevents) {
     case 1:
-      assert.strictEqual(common.fileExists(FILENAME), false);
+      assert.strictEqual(fs.existsSync(FILENAME), false);
       break;
     case 2:
     case 3:
-      assert.strictEqual(common.fileExists(FILENAME), true);
+      assert.strictEqual(fs.existsSync(FILENAME), true);
       break;
     case 4:
-      assert.strictEqual(common.fileExists(FILENAME), false);
+      assert.strictEqual(fs.existsSync(FILENAME), false);
       fs.unwatchFile(FILENAME);
       break;
     default: