diff --git a/tests/headless_interaction.cpp b/tests/headless_interaction.cpp
index bcae22f..9427418 100644
--- a/tests/headless_interaction.cpp
+++ b/tests/headless_interaction.cpp
@@ -28,6 +28,18 @@ int main() {
     CHECK(izo::ShowMessageBox({"title", "message"}, &error) == izo::MessageResponse::Error);
     CHECK(!error.empty());
     error.clear();
+    CHECK(izo::ShowErrorBox("title", "message", &error) == izo::MessageResponse::Error);
+    CHECK(!error.empty());
+    error.clear();
+    CHECK(izo::ShowQuestionBox("title", "message", &error) == izo::MessageResponse::Error);
+    CHECK(!error.empty());
+    const auto input = izo::ShowInputBox({"title", "message", "initial"});
+    CHECK(input.response == izo::MessageResponse::Error);
+    CHECK(!input.errorMessage.empty());
+    const auto color = izo::PickColor({"title", {1, 2, 3}});
+    CHECK(color.response == izo::MessageResponse::Error);
+    CHECK(!color.errorMessage.empty());
+    error.clear();
     CHECK(!izo::SetClipboardText({}, &error));
     CHECK(!error.empty());
     error.clear();