raise and test error

sdds/__init__.py

@@ -6,7 +6,7 @@
 __title__ = "sdds"
 __description__ = "SDDS file handling."
 __url__ = "https://github.com/pylhc/sdds"
-__version__ = "0.3.0"
+__version__ = "0.3.1"
 __author__ = "pylhc"
 __author_email__ = "pylhc@github.com"
 __license__ = "MIT"

sdds/classes.py

@@ -210,6 +210,11 @@ def __init__(self, version: str, description: Optional[Description],
                  definitions_list: List[Definition],
                  values_list: List[Any]) -> None:
         self.version = version
+
+        name_list = [definition.name for definition in definitions_list]
+        if len(name_list) != len(set(name_list)):
+            raise ValueError("Duplicated name entries found")
+
         self.description = description
         self.definitions = {definition.name: definition for definition in definitions_list}
         self.values = {definition.name: value for definition, value

tests/test_sdds.py

@@ -191,6 +191,16 @@ def test_sdds_write_ascii(self):
 
 
 class TestClasses:
+    def test_duplicated_entries(self):
+        with pytest.raises(ValueError) as e:
+            SddsFile(
+                version="SDDS1", description=None,
+                definitions_list=[Parameter(name="test", type_="int"),
+                                  Parameter(name="test", type_="str")],
+                values_list=[1, "hello"],
+            )
+        assert "Duplicated" in str(e)
+
     def test_string_and_repr(self):
         sdds = SddsFile(version="SDDS1", description=None, definitions_list=[], values_list=[])
         assert "SDDS-File" in repr(sdds)