| commit | 73e971cc7f90896feed6c83d56b4903e7dfe1198 | [log] [tgz] |
|---|---|---|
| author | Laszlo Csomor <laszlocsomor@google.com> | Wed Jan 18 13:30:35 2017 +0000 |
| committer | Vladimir Moskva <vladmos@google.com> | Wed Jan 18 16:02:06 2017 +0000 |
| tree | 840807d5e182e98e93a5f675cd6b7bbb9b1058d7 | |
| parent | 63c9af49bbf3ca7f0d8619a9636bce2b8b70b5c6 [diff] |
Windows, JNI: add tests for windows_util Add tests for the AsExecutablePathForCreateProcess method, since its logic is pretty complex. Unfortunately testing it also requires complex logic, as we need to test what exactly happens when the input path is shorter than MAX_PATH or when it's longer than it. To test that reliably, we need a base path that we know will not get shortened. Creating that base path under the temp directory is a nightmare, we need to: (1) retrieve the temp dir, shorten it so we know that it won't be shortened further (2) keep creating subdirectories that have a short name so they also won't get shortened, but keep the entire path below MAX_PATH while leaving enough space for a file name in the end (3) append a file name such that the path is just below MAX_PATH, or is exactly that long, or is longer than it. Because of steps (1) and (2) we can be sure that no other component in the path will get shortened, so we can test exactly what's going on with the shortener logic and its error handling. But oh boy is it complicated. Side note, we need to use the Widechar WinAPI functions to create/delete the directories and files, because the POSIX API on Windows appears to be backed by the ASCII API functions, so attempting to `mkdir` with a path longer than CreateDirectoryA's limit is going to fail. But on the positive side, adding tests caught two bugs in the method, so we have that going for us which is nice. See https://github.com/bazelbuild/bazel/issues/2107 See https://github.com/bazelbuild/bazel/issues/2181 -- PiperOrigin-RevId: 144823029 MOS_MIGRATED_REVID=144823029
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