adding initial tests

tests/test_journal/test_pages.py

@@ -0,0 +1,31 @@
+import pytest
+
+from tembo.journal.pages import PageCreator
+
+
+def test_page_creator_convert_to_path_missing_base_path(caplog):
+    # arrange
+    base_path = "/some/nonexistent/path"
+    page_path = "some_page"
+    filename = "some_filename"
+    extension = "some_extension"
+
+    # act
+    with pytest.raises(SystemExit) as system_exit:
+        PageCreator._convert_to_path(
+            base_path=base_path, page_path=page_path, filename=filename, extension=extension
+        )
+
+    # assert
+    assert system_exit.value.code == 1
+    assert caplog.records[0].levelname == "CRITICAL"
+    assert caplog.records[0].message == "Tembo base path of /some/nonexistent/path does not exist - exiting"
+
+# @pytest.mark.parametrize([])
+def test_page_creator_convert_to_path(shared_datadir):
+    # arrange
+
+    # act
+
+    # assert
+    pass