1. A computer-implemented method for test planning and test case generation, the method comprising: collecting, by a processor, a plurality of requirements; creating, by the processor, a plurality of content space specification files that includes the plurality of requirements; processing, by the processor, the plurality of content space specification files to generate a plurality of user stories; outputting, by the processor, the plurality of user stories; and integrating, by the processor, the user stories into test planning and test case generation.