fix: include tests directory

MANIFEST.in

@@ -14,7 +14,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-include README.md LICENSE
-recursive-include google *.json *.proto
+# Generated by synthtool. DO NOT EDIT!
+include README.rst LICENSE
+recursive-include google *.json *.proto py.typed
+recursive-include tests *
 global-exclude *.py[co]
 global-exclude __pycache__
+
+# Exclude scripts for samples readmegen
+prune scripts/readme-gen

owlbot.py

@@ -63,6 +63,7 @@
 s.move(templated_files / ".kokoro", excludes=["docs/**/*", "publish-docs.sh"])
 s.move(templated_files / "setup.cfg")
 s.move(templated_files / "LICENSE")
+s.move(templated_files / "MANIFEST.in")
 s.move(templated_files / ".github", excludes=["workflows"])
 
 # Generate _pb2.py files and format them

setup.py

@@ -28,7 +28,7 @@
 
 package_root = os.path.abspath(os.path.dirname(__file__))
 
-readme_filename = os.path.join(package_root, "README.md")
+readme_filename = os.path.join(package_root, "README.rst")
 with io.open(readme_filename, encoding="utf-8") as readme_file:
     readme = readme_file.read()