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benchmark/fs/bench-readlinkSync.js

@@ -0,0 +1,54 @@
+'use strict';
+
+const common = require('../common');
+const fs = require('fs');
+const assert = require('assert');
+const tmpdir = require('../../test/common/tmpdir');
+
+if (process.platform === 'win32') {
+  console.log('Skipping: Windows does not play well with `symlinkSync`');
+  process.exit(0);
+}
+
+const bench = common.createBenchmark(main, {
+  type: ['valid', 'invalid'],
+  n: [1e3],
+});
+
+function main({ n, type }) {
+  switch (type) {
+    case 'valid': {
+      tmpdir.refresh();
+      const tmpfile = tmpdir.resolve(`.readlink-file-${process.pid}`);
+      fs.writeFileSync(tmpfile, 'data', 'utf8');
+      let returnValue;
+      for (let i = 0; i < n; i++) {
+        fs.symlinkSync(tmpfile, tmpdir.resolve(`.readlink-sync-${i}`), 'file');
+      }
+      bench.start();
+      for (let i = 0; i < n; i++) {
+        returnValue = fs.readlinkSync(tmpdir.resolve(`.readlink-sync-${i}`), { encoding: 'utf8' });
+      }
+      bench.end(n);
+      assert.ok(returnValue);
+      break;
+    }
+
+    case 'invalid': {
+      let hasError = false;
+      bench.start();
+      for (let i = 0; i < n; i++) {
+        try {
+          fs.readlinkSync(tmpdir.resolve('.non-existing-file-for-readlinkSync'));
+        } catch {
+          hasError = true;
+        }
+      }
+      bench.end(n);
+      assert.ok(hasError);
+      break;
+    }
+    default:
+      new Error('Invalid type');
+  }
+}