Add test of reading metadata

- Add Git LFS configuration, .gitattributes
- Add metadata specimen

.gitattributes

@@ -1,2 +1,4 @@
 # Reduce the number of merge/rebase conflicts
 doc/whatsnew.rst merge=union
+# Git LFS
+*.xlsx filter=lfs diff=lfs merge=lfs -text

transport_data/tests/test_org.py

@@ -1,9 +1,33 @@
 from transport_data.org import get_agencyscheme, refresh
+from transport_data.org.metadata import read_workbook, summarize_metadataset
 
 
 def test_get_agencyscheme() -> None:
     get_agencyscheme()
 
 
+def test_read_workbook(test_data_path) -> None:
+    # Function runs successfully
+    result = read_workbook(test_data_path.joinpath("metadata-input.xlsx"))
+
+    # Result has a certain number of metadata reports
+    assert 47 == len(result.report)
+
+
+def test_summarize_metadataset(capsys, test_data_path) -> None:
+    mds = read_workbook(test_data_path.joinpath("metadata-input.xlsx"))
+
+    # Function runs successfully
+    summarize_metadataset(mds)
+
+    captured = capsys.readouterr()
+    # pathlib.Path("debug.txt").write_text(captured.out)  # DEBUG Write to a file
+
+    # Output contains certain text
+    assert "MEASURE: 40 unique values" in captured.out
+
+    # TODO expand with further assertions
+
+
 def test_refresh() -> None:
     refresh()