d13b7f9b89
Change If6c4cbce introduced a null pointer exception when a draft change comment includes a range, and we didn't notice because ranges are not used in the tests. This null pointer exception was already fixed by change I0e3c734d. The test cases now fail when that change is not applied. Change I77772b6f fixed another null pointer exception when posting a file level comment (i.e. the optional line member was null). Extend CommentsIT to include test coverage of comment ranges and file comments. Fix another null pointer exception when posting file comments, that was exposed by the newly added tests. Change-Id: I517cc24ff3bbabdcbc14d743b8788de33b9c0241