src/rougail/user_data.py

@@ -611,3 +611,40 @@ def convert_value(option, value, needs_convert):
         except:
             pass
     return value
+
+
+def mandatories(config, errors: list) -> None:
+    try:
+        mandatories = config.value.mandatory()
+    except (ConfigError, PropertiesOptionError, ValueError) as err:
+        try:
+            subconfig = err.subconfig
+        except AttributeError:
+            subconfig = None
+        if subconfig:
+            err.prefix = ""
+            errors.append({str(err): subconfig})
+        else:
+            errors.append(str(err))
+    else:
+        for option in mandatories:
+            _populate_mandatory(option, errors)
+
+
+def _populate_mandatory(option, errors: list) -> None:
+    try:
+        option.value.get()
+    except PropertiesOptionError as err:
+        if "empty" in err.proptype:
+            msg = _("null is not a valid value for a multi")
+        elif "mandatory" in err.proptype:
+            msg = _("mandatory variable but has no value")
+        else:
+            msg = _("mandatory variable but is inaccessible and has no value or has null in value")
+    else:
+        proptype = option.value.mandatory(return_type=True)
+        if proptype == "empty":
+            msg = _("null is not a valid value for a multi")
+        elif proptype == "mandatory":
+            msg = _("mandatory variable but has no value")
+    errors.append({msg: option._subconfig})

tests/dictionaries/01_6string_empty/makedict/mandatory.json

@@ -1 +1 @@
-["rougail.var1"]
+[]