2 files changed, 43 insertions, 0 deletions
diff --git a/setup_commands/__init__.py b/setup_commands/__init__.py
new file mode 100644
index 0000000..967bb11
--- /dev/null
+++ b/setup_commands/__init__.py
@@ -0,0 +1,3 @@
+"""Module for custom setup commands."""
+
+from .run_tests import RunTests
diff --git a/setup_commands/run_tests.py b/setup_commands/run_tests.py
new file mode 100644
index 0000000..1bb5dab
--- /dev/null
+++ b/setup_commands/run_tests.py
@@ -0,0 +1,40 @@
+import os
+import sys
+from distutils.core import Command
+
+class RunTests(Command):
+    """
+    A custom command to run tests.
+    """
+    description = "Run the tests"
+    test_types = (
+        "all", "unit", "integration", "performance")
+    user_options = [
+        ("type=", None,
+         f"""Specify the type of tests to run.
+         Valid types are {tuple(test_types)}.
+         Default is `all`.""")]
+
+    def __init__(self, dist):
+        """Initialise the command."""
+        super().__init__(dist)
+        self.command = "pytest"
+
+    def initialize_options(self):
+        """Initialise the default values of all the options."""
+        self.type = "all"
+
+    def finalize_options(self):
+        """Set final value of all the options once they are processed."""
+        if self.type not in RunTests.test_types:
+            raise Exception(f"""
+            Invalid test type (self.type) requested!
+            Valid types are
+            {tuple(RunTests.test_types)}""")
+
+        if self.type != "all":
+            self.command = f"pytest -m {self.type}_test"
+    def run(self):
+        """Run the chosen tests"""
+        print(f"Running {self.type} tests")
+        os.system(self.command)