diff --git a/.github/workflows/poetry.yml b/.github/workflows/poetry.yml
index b2a6be4..71c0b5b 100644
--- a/.github/workflows/poetry.yml
+++ b/.github/workflows/poetry.yml
@@ -26,3 +26,5 @@ jobs:
         run: poetry run black --check --verbose .
       - name: Isort check
         run: poetry run isort . --check --diff
+      - name: Pytest check
+        run: poetry run pytest -rP
diff --git a/tests/test_kcidev.py b/tests/test_kcidev.py
new file mode 100644
index 0000000..48c0631
--- /dev/null
+++ b/tests/test_kcidev.py
@@ -0,0 +1,40 @@
+from subprocess import PIPE, run
+import os
+
+
+def test_prepare():
+    os.system("cp .kci-dev.toml.example .kci-dev.toml")
+    assert os.path.exists(".kci-dev.toml")
+
+
+def test_kcidev_help():
+    command = ["poetry", "run", "kci-dev", "--help"]
+    result = run(command, stdout=PIPE, stderr=PIPE, universal_newlines=True)
+    print("returncode: " + str(result.returncode))
+    print("#### stdout ####")
+    print(result.stdout)
+    print("#### stderr ####")
+    print(result.stderr)
+    assert result.returncode == 0
+
+
+def test_kcidev_commit_help():
+    command = ["poetry", "run", "kci-dev", "commit", "--help"]
+    result = run(command, stdout=PIPE, stderr=PIPE, universal_newlines=True)
+    print("returncode: " + str(result.returncode))
+    print("#### stdout ####")
+    print(result.stdout)
+    print("#### stderr ####")
+    print(result.stderr)
+    assert result.returncode == 0
+
+
+def test_kcidev_patch_help():
+    command = ["poetry", "run", "kci-dev", "patch", "--help"]
+    result = run(command, stdout=PIPE, stderr=PIPE, universal_newlines=True)
+    print("returncode: " + str(result.returncode))
+    print("#### stdout ####")
+    print(result.stdout)
+    print("#### stderr ####")
+    print(result.stderr)
+    assert result.returncode == 0