Revert "[test] Remove dead method"

This reverts commit 804433e.

test/utils/consoleErrorMock.js

@@ -35,6 +35,13 @@ class ConsoleErrorMock {
     throw new Error('Requested call count before spy() was called');
   };
 
+  args = () => {
+    throw new TypeError(
+      'args() was removed in favor of messages(). ' +
+        'Use messages() to match against the actual error message that will be displayed in the console.',
+    );
+  };
+
   /**
    * returns the formatted message for each call
    *