1 files changed, 29 insertions, 0 deletions
diff --git a/test/common.js b/test/common.js
index 694660d17e..cbd1c3a8e1 100644
--- a/test/common.js
+++ b/test/common.js
@@ -9,6 +9,7 @@ const stream = require('stream');
 const buffer = require('buffer');
 const util = require('util');
 const Timer = process.binding('timer_wrap').Timer;
+const execSync = require('child_process').execSync;
 
 const testRoot = process.env.NODE_TEST_DIR ?
                    path.resolve(process.env.NODE_TEST_DIR) : __dirname;
@@ -460,6 +461,34 @@ exports.fileExists = function(pathname) {
   }
 };
 
+exports.canCreateSymLink = function() {
+  // On Windows, creating symlinks requires admin privileges.
+  // We'll only try to run symlink test if we have enough privileges.
+  // On other platforms, creating symlinks shouldn't need admin privileges
+  if (exports.isWindows) {
+    // whoami.exe needs to be the one from System32
+    // If unix tools are in the path, they can shadow the one we want,
+    // so use the full path while executing whoami
+    const whoamiPath = path.join(process.env['SystemRoot'],
+      'System32', 'whoami.exe');
+
+    let err = false;
+    let output = '';
+
+    try {
+      output = execSync(whoamiPath + ' /priv', { timout: 1000 });
+    } catch (e) {
+      err = true;
+    } finally {
+      if (err || !output.includes('SeCreateSymbolicLinkPrivilege')) {
+        return false;
+      }
+    }
+  }
+
+  return true;
+};
+
 function fail(msg) {
   assert.fail(null, null, msg);
 }