🚧 added new test file preprocessing

Author: marcoreverenna

tests/test_preprocessing.py

@@ -0,0 +1,21 @@
+#!/usr/bin/env python3
+
+import pytest
+
+from instanexus.preprocessing import remove_modifications
+
+def test_remove_modifications():
+    assert remove_modifications("A(ox)BC(mod)D") == "ABCD"
+    assert remove_modifications("A[UNIMOD:21]BC[UNIMOD:35]D") == "ABCD"
+    assert (
+        remove_modifications("A(ox)[UNIMOD:21]BC(mod)[UNIMOD:35]D") == "ABCD"
+    )
+    assert remove_modifications(None) is None
+    assert remove_modifications("ACD") == "ACD"
+    assert remove_modifications("A(I)BCD") == "ABCD"
+    assert remove_modifications("A(ox)B(I)C(mod)D") == "ABCD"
+    assert (
+        remove_modifications("A(ox)[UNIMOD:21]B(I)C(mod)[UNIMOD:35]D") == "ABCD"
+    )
+    assert remove_modifications("AI BCD") == "AL BCD"
+    assert remove_modifications("A(ox)I B(mod)CD") == "AL BCD"