diff --git a/test/common.js b/test/common.js
index a4089183eff727..a72560be77a3a9 100644
--- a/test/common.js
+++ b/test/common.js
@@ -533,3 +533,17 @@ ArrayStream.prototype.writable = true;
 ArrayStream.prototype.pause = function() {};
 ArrayStream.prototype.resume = function() {};
 ArrayStream.prototype.write = function() {};
+
+exports.expectWarning = function(name, expected) {
+  if (typeof expected === 'string')
+    expected = [expected];
+  process.on('warning', exports.mustCall((warning) => {
+    assert.strictEqual(warning.name, name);
+    assert.ok(expected.includes(warning.message),
+              `unexpected error message: "${warning.message}"`);
+    // Remove a warning message after it is seen so that we guarantee that we
+    // get each message only once.
+    expected.splice(expected.indexOf(warning.message), 1);
+  }, expected.length));
+};
+