FIX: compare function did not check units

Summary

Fix for #90 (closed)

Focus

A few lines added analogous to existing code. Please check whether this is appropriate.

Test Environment

Just run pytest.

Check List for the Author

• All automated tests pass
• Reference related Issues
• Up-to-date CHANGELOG.md
• Add type hints in created/changed code
• Annotations in code (Gitlab comments)
  • Intent of new code
  • Problems with old code
  • Why this implementation?

Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md
• The test environment setup works and the intended behavior is reproducible in the test environment
• In-code documentation and comments are up-to-date.
• Check: Are there spezifications? Are they satisfied?

For further good practices have a look at our review guidelines.

unittests/test_apiutils.py

@@ -144,3 +144,38 @@ def test_compare_entities():
 
     assert "tests_234234" in diff_r1["properties"]
     assert "tests_TT" in diff_r2["properties"]
+
+    
+def test_compare_entities_units():
+    r1 = db.Record()
+    r2 = db.Record()
+    r1.add_parent("bla")
+    r2.add_parent("bla")
+    r1.add_parent("lopp")
+    r1.add_property("test", value=2, unit="cm")
+    r2.add_property("test", value=2, unit="m")
+    r1.add_property("tests", value=3, unit="cm")
+    r2.add_property("tests", value=45, unit="cm")
+    r1.add_property("tester", value=3)
+    r2.add_property("tester", )
+    r1.add_property("tests_234234", value=45, unit="cm")
+    r2.add_property("tests_TT", value=45, unit="cm")
+
+    diff_r1, diff_r2 = compare_entities(r1, r2)
+
+    assert len(diff_r1["parents"]) == 1
+    assert len(diff_r2["parents"]) == 0
+    assert len(diff_r1["properties"]) == 4
+    assert len(diff_r2["properties"]) == 4
+
+    assert "tests" in diff_r1["properties"]
+    assert "tests" in diff_r2["properties"]
+
+    assert "tester" in diff_r1["properties"]
+    assert "tester" in diff_r2["properties"]
+
+    assert "tests_234234" in diff_r1["properties"]
+    assert "tests_TT" in diff_r2["properties"]
+
+    assert diff_r1["properties"]["test"]["unit"] == "cm"
+    assert diff_r2["properties"]["test"]["unit"] == "m"