TST, MAINT: Add `__init__.py` files to tests directories.

This allows pytest to run with duplicate test file names. Note that
`python <path-to-test-file>` no longer works with this change, nor will
a simple `pytest numpy`, because numpy is imported from the numpy
repository. However, `python runtests.py` and `>>> numpy.test()` are
still available.

1 files changed, 0 insertions, 0 deletions

diff --git a/numpy/random/tests/__init__.py b/numpy/random/tests/__init__.py
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/numpy/random/tests/__init__.py