added the unit tests

Signed-off-by: Peter Staar <taa@zurich.ibm.com>

tests/data/groundtruth/docling_v2/test-01.xlsx.itxt

@@ -0,0 +1,7 @@
+item-0 at level 0: unspecified: group _root_
+  item-1 at level 1: section: group sheet: Sheet1
+    item-2 at level 2: table with [7x3]
+  item-3 at level 1: section: group sheet: Sheet2
+    item-4 at level 2: table with [9x4]
+    item-5 at level 2: table with [5x3]
+    item-6 at level 2: table with [5x3]

tests/data/groundtruth/docling_v2/test-01.xlsx.md

@@ -0,0 +1,33 @@
+|   first  |   second  |   third |
+|----------|-----------|---------|
+|        1 |         5 |       9 |
+|        2 |         4 |       6 |
+|        3 |         3 |       3 |
+|        4 |         2 |       0 |
+|        5 |         1 |      -3 |
+|        6 |         0 |      -6 |
+
+|   col-1 |   col-2 |   col-3 |   col-4 |
+|---------|---------|---------|---------|
+|       1 |       2 |       3 |       4 |
+|       2 |       4 |       6 |       8 |
+|       3 |       6 |       9 |      12 |
+|       4 |       8 |      12 |      16 |
+|       5 |      10 |      15 |      20 |
+|       6 |      12 |      18 |      24 |
+|       7 |      14 |      21 |      28 |
+|       8 |      16 |      24 |      32 |
+
+|   col-1 |   col-2 |   col-3 |
+|---------|---------|---------|
+|       1 |       2 |       3 |
+|       2 |       4 |       6 |
+|       3 |       6 |       9 |
+|       4 |       8 |      12 |
+
+|   col-1 |   col-2 |   col-3 |
+|---------|---------|---------|
+|       1 |       2 |       3 |
+|       2 |       4 |       6 |
+|       3 |       6 |       9 |
+|       4 |       8 |      12 |

tests/test_msexcel.py

@@ -0,0 +1,77 @@
+import json
+import os
+from pathlib import Path
+
+from docling.backend.msword_backend import MsWordDocumentBackend
+from docling.datamodel.base_models import InputFormat
+from docling.datamodel.document import (
+    ConversionResult,
+    InputDocument,
+    SectionHeaderItem,
+)
+from docling.document_converter import DocumentConverter
+
+GENERATE = True
+
+
+def get_xlsx_paths():
+
+    # Define the directory you want to search
+    directory = Path("./tests/data/xlsx/")
+
+    # List all PDF files in the directory and its subdirectories
+    pdf_files = sorted(directory.rglob("*.xlsx"))
+    return pdf_files
+
+
+def get_converter():
+
+    converter = DocumentConverter(allowed_formats=[InputFormat.XLSX])
+
+    return converter
+
+
+def verify_export(pred_text: str, gtfile: str):
+
+    if not os.path.exists(gtfile) or GENERATE:
+        with open(gtfile, "w") as fw:
+            fw.write(pred_text)
+
+        return True
+
+    else:
+        with open(gtfile, "r") as fr:
+            true_text = fr.read()
+
+        assert pred_text == true_text, "pred_itxt==true_itxt"
+        return pred_text == true_text
+
+
+def test_e2e_xlsx_conversions():
+
+    xlsx_paths = get_xlsx_paths()
+    converter = get_converter()
+
+    for xlsx_path in xlsx_paths:
+        # print(f"converting {xlsx_path}")
+
+        gt_path = (
+            xlsx_path.parent.parent / "groundtruth" / "docling_v2" / xlsx_path.name
+        )
+
+        conv_result: ConversionResult = converter.convert(xlsx_path)
+
+        doc: DoclingDocument = conv_result.document
+
+        pred_md: str = doc.export_to_markdown()
+        assert verify_export(pred_md, str(gt_path) + ".md"), "export to md"
+
+        pred_itxt: str = doc._export_to_indented_text(
+            max_text_len=70, explicit_tables=False
+        )
+        assert verify_export(
+            pred_itxt, str(gt_path) + ".itxt"
+        ), "export to indented-text"
+
+        pred_json: str = json.dumps(doc.export_to_dict(), indent=2)
+        assert verify_export(pred_json, str(gt_path) + ".json"), "export to json"