ENH: Test for multi-retrieve improved, added tests for errors.

test/test_caosdb.m

@@ -65,7 +65,7 @@ function test_retrieve_multiple()
   % Retrieve two entities
   c = Caosdb();
   violin = c.retrieve("120"){1};
-  collection = c.retrieve({"120", "121"});
+  collection = c.retrieve({"120", "119"});
 
   assertEqual(length(collection), 2);
   assertEqual(numel(collection), 2);
@@ -73,4 +73,33 @@ function test_retrieve_multiple()
   assertEqual(collection{1}.id, violin.id);
   assertEqual(collection{1}.name, violin.name);
 
+  assertEqual(collection{2}.name, "Antonio Stradivari");
+  props = collection{2}.get_properties();
+  assertEqual(props{1}.name, "latitude");
+  assertEqual(props{1}.value, 45.07353);
+  assertEqual(props{2}.name, "longitude");
+  assertEqual(props{2}.value, 7.68315);
 end
+
+%% Test retrieval with errors
+function test_retrieve_failure()
+  % Default connection configuration is sufficient.
+  c = Caosdb();
+
+  % Retrieve a non-existing entity.
+  does_not_exist = c.retrieve("i-do-not-exist"){1};
+  assertTrue(does_not_exist.has_errors());
+  error = does_not_exist.get_errors(){1};
+  assertEqual(typeinfo(error.code), "int64 scalar");
+  assertEqual(error.code, int64(2));
+  assertEqual(error.description, "Entity does not exist.");
+
+  % Call retrieve with wrong arguments.
+  % (Only m file level, no invalid arguments should make it to the mex function.)
+  assertExceptionThrown(@()c.retrieve(120), "maox:InvalidArgument");
+  assertExceptionThrown(@()c.retrieve({120}), "maox:InvalidArgument");
+  assertExceptionThrown(@()c.retrieve({"120"}, {}), "maox:InvalidArgument");
+  assertExceptionThrown(@()c.retrieve({"120"}, {120}), "maox:InvalidArgument");
+  assertExceptionThrown(@()c.retrieve({"120"}, {"120", 120}), "maox:InvalidArgument");
+end
+