Tests for obligatory properties

Summary

Tests for caosdb-server!18 (merged)

Bug report in caosdb-server#146 (closed)

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tests/test_importance.py

@@ -146,3 +146,21 @@ def test_sub_property_of_obl_in_same_container():
     c = db.Container()
     c.extend([rt2, p2])
     c.insert()  # everything ok!
+
+def test_illegal_flag_value():
+    p = db.Property(name="TestOblProperty", datatype=db.TEXT).insert()
+    p_dummy = db.Property(name="TestDummyProperty", datatype=db.TEXT).insert()
+
+    rt1 = db.RecordType(name="TestRecordType1")
+    rt1.add_property(name="TestOblProperty", importance=db.OBLIGATORY)
+    rt1.insert()
+
+    rt2 = db.RecordType(name="TestRecordType2")
+    rt2.add_parent("TestRecordType1", inheritance=db.NONE)
+    rt2.add_property("TestDummyProperty")
+    rt2.set_flag("force-missing-obligatory", "illegal!!!!")
+    with raises(db.TransactionError) as exc:
+        rt2.insert()
+    # default behavior + warning
+    assert exc.value.errors[0].msg == "An obligatory property is missing."
+    assert "Illegal value for flag 'force-missing-obligatory'." in [w.description for w in rt2.get_warnings()]