fix: Ensure repo install (#741)

* Sets cache support to false, removes upper req limit

* fix: adds logic to ensure repo installation

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* edits to owlbot to ensure that changes persist

* more edits to owlbot to ensure that changes persist

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: chalmerlowe

owlbot.py

@@ -94,6 +94,8 @@
         # dependency of grpc''',
 )
 
+
+
 def place_before(path, text, *before_text, escape=None):
     replacement = "\n".join(before_text) + "\n" + text
     if escape:
@@ -211,6 +213,17 @@ def compliance(session):
 
 python.py_samples(skip_readmes=True)
 
+s.replace(
+    ["./samples/snippets/noxfile.py"], 
+    """session.install\("-e", _get_repo_root\(\)\)""",
+    """session.install("-e", _get_repo_root())
+    else:
+        # ensure that sqlalchemy_bigquery gets installed
+        # for tests that are not based on source
+        session.install("sqlalchemy_bigquery")""",
+)
+
+
 # ----------------------------------------------------------------------------
 # Final cleanup
 # ----------------------------------------------------------------------------

samples/snippets/noxfile.py

@@ -220,6 +220,10 @@ def _session_tests(
 
     if INSTALL_LIBRARY_FROM_SOURCE:
         session.install("-e", _get_repo_root())
+    else:
+        # ensure that sqlalchemy_bigquery gets installed
+        # for tests that are not based on source
+        session.install("sqlalchemy_bigquery")
 
     if post_install:
         post_install(session)