Isolate the testing import in test code #32
Merged
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testing_mocks_linux.go imports the testing package, and that import leaks into any binary built with securejoin. This causes issues in projects which check for that, such as Kubernetes (see kubernetes/kubernetes#127832 and its tests).
This adds a level of indirection for hooks used to force testing behaviour in procfs_linux.go, so that the mocks can be defined only in _test.go files. This ensures that the testing package is only pulled in for tests.