wip: more tests!

packages/core/tests/safety.rs

@@ -0,0 +1,26 @@
+//! Tests related to safety of the library.
+
+use dioxus::prelude::*;
+use dioxus_core::SuspenseContext;
+
+/// Ensure no issues with not calling rebuild
+#[test]
+fn root_node_isnt_null() {
+    let dom = VirtualDom::new(|cx| render!("Hello world!"));
+
+    let scope = dom.base_scope();
+
+    // We haven't built the tree, so trying to get out the root node should fail
+    assert!(scope.try_root_node().is_none());
+
+    // There should be no way to gain an invalid pointer
+    assert!(scope.current_frame().node.get().is_null());
+    assert!(scope.previous_frame().node.get().is_null());
+
+    // The height should be 0
+    assert_eq!(scope.height(), 0);
+
+    // There should be a default suspense context
+    // todo: there should also be a default error boundary
+    assert!(scope.has_context::<SuspenseContext>().is_some());
+}