The problem was that the path used for environment variables that inform `env::temp_dir()` was a relative path. Although `temp_dir()` itself will return an absolute path (resolved from it), the test changes the current directory. This change occurred between when the relative path was obtained by the test code and when it was resolved by the code under test. The path was therefore resolved to a different location (the last few path components were repeated) that never exists. Since it didn't exist, the `git config -l` command failed, and no installation config file path was returned, causing the test to wrongly pass (since `None` is the correct result when only local scope configuration files are available). The fix is to use an absolute path. In addition, this canonicalizes the path rather than merely resolving it, and does so even before changing directory to it, so that if `temp_dir()` "fixes up" the path in ways beyond resolving it, such as resolving symlinks, the test is less likely to wrongly pass. The test now rightly fails, since the hardening it tests for has not yet been implemented in the code under test. Further changes to the test are still warranted, at least to clean it up, and possibly also to make it slightly more robust.
Unified · Split
| @@ -391,7 +391,10 @@ fn exe_info_never_from_local_scope() { · 390 unmodified lines | ||
| 391 | 391 | #[test] |
| 392 | 392 | #[serial] |
| 393 | 393 | fn exe_info_never_from_local_scope_even_if_temp_is_here() { |
| 394 | − let repo = gix_testtools::scripted_fixture_read_only("local_config.sh").expect("script succeeds"); | |
| 394 | + let repo = gix_testtools::scripted_fixture_read_only("local_config.sh") | |
| 395 | + .expect("script succeeds") | |
| 396 | + .canonicalize() | |
| 397 | + .expect("path is valid and exists"); | |
| 395 | 398 | let repo_str = repo.to_str().expect("valid Unicode"); |
| 396 | 399 | let _cwd = gix_testtools::set_current_dir(&repo).expect("can change to repo dir"); |
| 397 | 400 | let _env = gix_testtools::Env::new() |
| @@ -400,6 +403,9 @@ fn exe_info_never_from_local_scope_even_if_temp_is_here() { · 2 unmodified lines | ||
| 400 | 403 | .set("TMPDIR", repo_str) // Mainly for Unix. |
| 401 | 404 | .set("TMP", repo_str) // Mainly for Windows. |
| 402 | 405 | .set("TEMP", repo_str); // Mainly for Windows, too. |
| 406 | + //assert_eq!(std::env::temp_dir(), repo); | |
| 407 | + //assert_eq!(std::env::temp_dir(), Path::new("/a/b/c"), "Bogus assertion to debug test"); | |
| 408 | + //std::thread::sleep(std::time::Duration::from_secs(3600)); | |
| 403 | 409 | let maybe_path = super::exe_info(); |
| 404 | 410 | assert!( |
| 405 | 411 | maybe_path.is_none(), |