remove pytest from noxfile

Author: parthea

.github/workflows/docs.yml

@@ -17,9 +17,6 @@ jobs:
       run: |
         python -m pip install --upgrade setuptools pip wheel
         python -m pip install nox
-    - name: Install pytest
-      run: |
-        python -m pip install pytest
     - name: Run docs
       run: |
         nox -s docs
@@ -36,9 +33,6 @@ jobs:
       run: |
         python -m pip install --upgrade setuptools pip wheel
         python -m pip install nox
-    - name: Install pytest
-      run: |
-        python -m pip install pytest
     - name: Run docfx
       run: |
         nox -s docfx

.github/workflows/lint.yml

@@ -17,9 +17,6 @@ jobs:
       run: |
         python -m pip install --upgrade setuptools pip wheel
         python -m pip install nox
-    - name: Install pytest
-      run: |
-        python -m pip install pytest
     - name: Run lint
       run: |
         nox -s lint

.github/workflows/mypy.yml

@@ -17,9 +17,6 @@ jobs:
       run: |
         python -m pip install --upgrade setuptools pip wheel
         python -m pip install nox
-    - name: Install pytest
-      run: |
-        python -m pip install pytest
     - name: Run mypy
       run: |
         nox -s mypy

.github/workflows/unittest.yml

@@ -47,9 +47,6 @@ jobs:
       run: |
         python -m pip install --upgrade setuptools pip wheel
         python -m pip install nox
-    - name: Install pytest
-      run: |
-        python -m pip install pytest
     - name: Run unit tests
       env:
         COVERAGE_FILE: .coverage${{ matrix.option }}-${{matrix.python }}

noxfile.py

@@ -15,9 +15,9 @@
 from __future__ import absolute_import
 import os
 import pathlib
-import pytest
 import re
 import shutil
+import unittest
 
 # https://github.com/google/importlab/issues/25
 import nox  # pytype: disable=import-error
@@ -115,7 +115,7 @@ def default(session, install_grpc=True, prerelease=False):
     run the tests.
     """
     if prerelease and not install_grpc:
-        pytest.skip("The pre-release session cannot be run without grpc")
+        unittest.skip("The pre-release session cannot be run without grpc")
 
     session.install(
         "dataclasses",