test pyproject extra

pyproject.toml

@@ -54,11 +54,13 @@ s3 = ["boto3"]
 gcs = ["google-api-python-client"]
 
 [tool.pytest.ini_options]
-addopts = "--strict-markers"
+addopts = "--strict-markers -m 'not no_gcs and not no_s3'"
 testpaths = "test"
 markers = [
     "gcs",
     "s3",
+    "no_gcs",
+    "no_s3"
 ]
 
 [tool.flake8]

test/test_pyproject_extra.py

@@ -0,0 +1,36 @@
+import unittest
+
+import pytest
+
+
+class TestPyprojectExtra(unittest.TestCase):
+
+    @pytest.mark.gcs
+    def test_gcs_installed(self):
+        try:
+            import googleapiclient  # noqa: F401
+        except ImportError:
+            raise Exception('googleapiclient should be installed')
+
+    @pytest.mark.no_gcs
+    def test_no_gcs(self):
+        try:
+            import googleapiclient  # noqa: F401
+            raise Exception('googleapiclient should not be installed')
+        except ImportError:
+            pass
+
+    @pytest.mark.s3
+    def test_s3_installed(self):
+        try:
+            import boto3  # noqa: F401
+        except ImportError:
+            raise Exception('boto3 should be installed')
+
+    @pytest.mark.no_s3
+    def test_no_s3(self):
+        try:
+            import boto3  # noqa: F401
+            raise Exception('boto3 should not be installed')
+        except ImportError:
+            pass