Refactor/prep Collection.to_contexts level tests
Refactor/prep Collection.to_contexts level tests

pyinvoke/invoke,kejbaly2/invoke,mkusz/invoke,frol/invoke,pyinvoke/invoke,frol/invoke,sophacles/invoke,kejbaly2/invoke,pfmoore/invoke,alex/invoke,pfmoore/invoke,mkusz/invoke,tyewang/invoke,mattrobenolt/invoke,singingwolfboy/invoke,mattrobenolt/invoke