Tests for quotes around datetimes

# Summary

Adds a test for checking queries with quoted datetimes. See [#39](https://gitlab.com/caosdb/caosdb-server/-/issues/39) in caosdb-server.

# Focus

`test_issue_39` in `tests/test_issues_server.py`

CHANGELOG.md

@@ -11,6 +11,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Tests for [#62](https://gitlab.com/caosdb/caosdb-server/-/issues/62)
   in caosdb-server-project, i.e., renaming of a RecordType that should
   be reflected in properties with that RT as datatype.
+- Test for [#39](https://gitlab.com/caosdb/caosdb-server/-/issues/39)
+  in caosdb server which checks if quoted datetimes in queries are
+  evaluated correctly.
 
 ### Changed (for changes in existing functionality)
 

tests/test_issues_server.py

@@ -25,13 +25,13 @@
 """Tests for issues on gitlab.com, project caosdb-server."""
 
 import caosdb as db
-from caosdb.exceptions import EntityError
+from caosdb.exceptions import EntityError, TransactionError
 import pytest
 
 
 def setup_module():
     try:
-        db.execute_query("FIND ENTITY WITH ID > 100").delete()
+        db.execute_query("FIND ENTITY WITH ID > 99").delete()
     except Exception as delete_exc:
         print(delete_exc)
 
@@ -48,6 +48,27 @@ def teardown():
 
 # ########################### Issue tests start here #####################
 
+
+def test_issue_39():
+    """Query Language Bug - quotes around year
+
+    Test for https://gitlab.com/caosdb/caosdb-server/-/issues/39
+    """
+    date_str = "2020-01-01"
+    prop_name = "Test_Date"
+    db.Property(name=prop_name, datatype=db.DATETIME).insert()
+    db.RecordType(name="Test_Type").add_property(name=prop_name).insert()
+    db.Record(name="Test_Record").add_parent(name="Test_Type").add_property(
+        name=prop_name, value=date_str).insert()
+    # Quotes around years should work in the query
+    ent = db.execute_query("FIND entity WITH A Test_Date IN \"2020\"",
+                           unique=True)
+    assert ent.get_property(prop_name).value == date_str
+    # This should raise a transaction error
+    with pytest.raises(TransactionError):
+        db.execute_query("FIND entity WITH A Test_Date IN \"abcd\"")
+
+
 @pytest.mark.xfail(reason="to be fixed in server repo")
 def test_issue_62():
     """datatype is not changed when recordtype name changes