Added optional test unset behaviour.

NuiCpp · Sep 28, 2023 · 2c63532 · 2c63532
1 parent 7b56333
commit 2c63532
Showing 1 changed file with 16 additions and 0 deletions.
diff --git a/nui/test/nui/test_attributes.hpp b/nui/test/nui/test_attributes.hpp
@@ -523,4 +523,20 @@ namespace Nui::Tests
 
         EXPECT_EQ(Nui::val::global("document")["body"]["attributes"]["id"].as<std::string>(), "A");
     }
+
+    TEST_F(TestAttributes, OptionalIsUnsetByObserved)
+    {
+        using Nui::Elements::div;
+        using Nui::Attributes::id;
+
+        Observed<std::optional<std::string>> idValue{std::string{"A"}};
+
+        render(div{id = idValue}());
+        EXPECT_EQ(Nui::val::global("document")["body"]["attributes"]["id"].as<std::string>(), "A");
+
+        idValue = std::nullopt;
+        globalEventContext.executeActiveEventsImmediately();
+
+        EXPECT_FALSE(Nui::val::global("document")["body"]["attributes"].hasOwnProperty("id"));
+    }
 }