pivotal/jasmine-ajax — pull request #43 by pivotal-pan (2013-12-03 01:54:13+00:00)
Title: Create requestHeaders object in FakeXMLHttpRequest constructor 

All FakeXMLHttpRequest objects were sharing a single requestHeaders hash that was set on the FakeXMLHttpRequest prototype. This caused request headers to bleed between tests. Create a new requestHeaders hash for each object in the constructor instead.