let build tests run in conda

Summary: Much of the code is actually available during the conda tests, as long as we look in the right place. We enable some of them.

Reviewed By: nikhilaravi

Differential Revision: D30249357

fbshipit-source-id: 01c57b6b8c04442237965f23eded594aeb90abfb

tests/common_testing.py

@@ -29,6 +29,8 @@ def get_pytorch3d_dir() -> Path:
     """
     if os.environ.get("INSIDE_RE_WORKER") is not None:
         return Path(__file__).resolve().parent
+    elif os.environ.get("CONDA_BUILD_STATE", "") == "TEST":
+        return Path(os.environ["SRC_DIR"])
     else:
         return Path(__file__).resolve().parent.parent