Add tests for the plugin mechanism

integration-tests/test_simplest_plugin.py

@@ -0,0 +1,47 @@
+"""
+Test simplest plugin
+"""
+from ruamel.yaml import YAML
+import os
+import subprocess
+
+yaml = YAML(typ='rt')
+
+
+def test_apt_packages():
+    """
+    Test extra apt packages are installed
+    """
+    assert os.path.exists('/usr/bin/sl')
+
+
+def test_pip_packages():
+    """
+    Test extra user pip packages are installed
+    """
+    subprocess.check_call([
+        '/opt/tljh/user/bin/python3',
+        '-c',
+        'import django'
+    ])
+
+
+def test_conda_packages():
+    """
+    Test extra user conda packages are installed
+    """
+    subprocess.check_call([
+        '/opt/tljh/user/bin/python3',
+        '-c',
+        'import hypothesis'
+    ])
+
+
+def test_config_hook():
+    """
+    Check config changes are present
+    """
+    with open('/opt/tljh/config.yaml') as f:
+        data = yaml.load(f)
+
+    assert data['simplest_plugin']['present']