Patent attributes
Embodiments of the present invention provide a multi-input comparative testing tool. The present invention looks at the internal structure of the software being tested and compares the two pairs of internal structures. In the present invention, the testing tool is capable of receiving multiple program code files or data files as its input. For each program code file, the testing tool generates a collection of problem objects and compares pairs of the problem collections with each other. The present invention may also run on data files having program code. For example, the present invention is capable of testing extensible markup language (XML) files to determine if they validate against a schema. Problem objects that are in both collections are identified and set aside. The remaining problem objects are then marked either as being resolved or new depending in which collection they exist.