promise_extensions.rb in volt-0.9.5.pre4

- old
+ new

@@ -1,8 +1,5 @@
-# Require the original promise library first.
-require 'volt/utils/promise'
-
 # A temp patch for promises until https://github.com/opal/opal/pull/725 is released.
 class Promise
   class UnrealizedPromiseException < RuntimeError ; end
   # We made a choice not to support comparitors and << and >> on method_missing
   # on Promises.  This makes it easier to understand what promise proxying does
@@ -111,9 +108,13 @@
     end.fail do |err|
       error = err
     end
 
     if error
+      if error.is_a?(RSpec::Expectations::ExpectationNotMetError)
+        # re-raise
+        raise error
+      end
       err_str = "Exception in Promise at .sync: #{error.inspect}"
       err_str += error.backtrace.join("\n") if error.respond_to?(:backtrace)
       Volt.logger.error(err_str)
 
       # The fail method in Promise is already defined, to re-raise the error,