Add a basic sanity check for the exporter

The check make sure all modules can be imported and the exporter can at least run without any arguments provided.

tests/test_exporter.py

@@ -0,0 +1,50 @@
+import subprocess
+import pytest
+
+
+@pytest.fixture
+def command_runner():
+    """
+    A pytest fixture to simplify running commands.  This is a helper
+    function that you can use in multiple tests.
+    """
+    def _run_command(command_list, check=True):
+        """
+        Runs a command and returns the result.
+
+        Args:
+            command_list (list): A list of strings representing the command
+                and its arguments (e.g., ["python", "my_script.py", "arg1"]).
+            check (bool, optional):  If True, raise an exception if the
+                command returns a non-zero exit code.  Defaults to True.
+
+        Returns:
+            subprocess.CompletedProcess: The result of the command.
+        """
+        return subprocess.run(
+            command_list,
+            capture_output=True,
+            text=True,
+            check=check,
+        )
+    return _run_command
+
+
+def test_sanity_check(command_runner):
+    """
+    This is a basic sanity check to make sure all modules can be imported
+    This runs the exporter without any arguments.  It should fail with a 
+    message about missing arguments.
+    """
+    result = command_runner(["wtsexporter"], False)
+    expected_stderr = "You must define the device type"
+    assert expected_stderr in result.stderr, f"STDERR was: {result.stderr}"
+    assert result.returncode == 2
+
+
+def test_android(command_runner):
+    ...
+
+
+def test_ios(command_runner):
+    ...