Here is a possible solution, though I have a problem with the test case. I'd like to invent something better. The problem with the "Simulate breakpoints" patch is that it patches core functions and not just the test case. Using AOP would solve it, but that is too much for a single test case. Robin Rosenberg (3): Add test cases dedicated to the WindowCache Simulate breakpoints Rescan for packs and retry once if object lookup scan fails .../tst/org/spearce/jgit/lib/WindowCacheTest.java | 132 ++++++++++++++++++++ .../src/org/spearce/jgit/lib/Repository.java | 76 +++++++++-- .../src/org/spearce/jgit/lib/WindowedFile.java | 7 + 3 files changed, 202 insertions(+), 13 deletions(-) create mode 100644 org.spearce.jgit.test/tst/org/spearce/jgit/lib/WindowCacheTest.java -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html