diff --git a/tests/autobigs/engine/test_writing.py b/tests/autobigs/engine/test_writing.py
index e69de29..8c19620 100644
--- a/tests/autobigs/engine/test_writing.py
+++ b/tests/autobigs/engine/test_writing.py
@@ -0,0 +1,47 @@
+from typing import AsyncIterable, Iterable
+
+import pytest
+from autobigs.engine.structures.alignment import AlignmentStats
+from autobigs.engine.writing import alleles_to_text_map, write_mlst_profiles_as_csv
+from autobigs.engine.structures.mlst import Allele, MLSTProfile
+import tempfile
+from csv import reader
+from os import path
+
+
+@pytest.fixture
+def dummy_alphabet_mlst_profile():
+    return MLSTProfile((
+        Allele("A", "1", None),
+        Allele("D", "1", None),
+        Allele("B", "1", None),
+        Allele("C", "1", None),
+        Allele("C", "2", AlignmentStats(90, 10, 0, 90))
+    ), "mysterious", "very mysterious")
+
+async def iterable_to_asynciterable(iterable: Iterable):
+    for iterated in iterable:
+        yield iterated
+
+async def test_column_order_is_same_as_expected_file(dummy_alphabet_mlst_profile: MLSTProfile):
+    dummy_profiles = [("test_1", dummy_alphabet_mlst_profile)]
+    with tempfile.TemporaryDirectory() as temp_dir:
+        output_path = path.join(temp_dir, "out.csv")
+        await write_mlst_profiles_as_csv(iterable_to_asynciterable(dummy_profiles), output_path)
+        with open(output_path) as csv_handle:
+            csv_reader = reader(csv_handle)
+            lines = list(csv_reader)
+            target_columns = lines[4:]
+            assert target_columns == sorted(target_columns)
+
+async def test_alleles_to_text_map_mapping_is_correct(dummy_alphabet_mlst_profile: MLSTProfile):
+    mapping = alleles_to_text_map(dummy_alphabet_mlst_profile.alleles)
+    expected_mapping = {
+        "A": "1",
+        "B": "1",
+        "C": ("1", "2*"),
+        "D": "1"
+    }
+    for allele_name, allele_ids in mapping.items():
+        assert allele_name in expected_mapping
+        assert allele_ids == expected_mapping[allele_name]
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