add path check in conda/repo-dir, more docs in conftest.py

tests/conda/r3.6-target-repo-dir-flag/verify.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 import sys
 import os
+from glob import glob
 
 # conda should still be in /srv/conda
 # and Python should still be in $NB_PYTHON_PREFIX
@@ -15,3 +16,12 @@ assert os.path.abspath(__file__) == "/srv/repo/verify.py"
 
 # Repo should be writable
 assert os.access("/srv/repo", os.W_OK)
+
+# All files in repo dir should be readable and writeable
+for path in glob("/src/repo/**/*", recursive=True):
+    assert os.access(path, os.R_OK)
+    assert os.access(path, os.W_OK)
+
+# Should be able to make a new file
+with open("/srv/repo/writeable", "w") as fp:
+    fp.write("writeable")

tests/conftest.py

@@ -1,11 +1,19 @@
 """
 Custom test collector for our integration tests.
 
-Each directory that has a script named 'verify' is considered
-a test. jupyter-repo2docker is run on that directory,
-and then ./verify is run inside the built container. It should
-return a non-zero exit code for the test to be considered a
-success.
+
+Test lifecycle:
+- Find all directories that contain `verify` or `*.repos.yaml`
+- If `verify` is found:
+    - Run `jupyter-repo2docker` on the test directory.
+      - Extra arguments may be added as YAML list of strings in `extra-args.yaml`.
+    - Run `./verify` inside the built container.
+    - It should return a non-zero exit code for the test to be considered a
+      successful.
+- If a `*.repos.yaml` is found:
+    - For each entry of the form `{name, url, ref, verify}`
+        - Run `jupyter-repo2docker` with the `url` and `ref`
+        - Run the `verify` inside the built container
 """
 
 import os