1 files changed, 27 insertions, 0 deletions

diff --git a/tests/version.rs b/tests/version.rs
index ef58601..af244db 100644
--- a/tests/version.rs
+++ b/tests/version.rs
@@ -69,3 +69,30 @@ fn the_hello_reply_round_trips() {
     assert!(parse_hello("PONG").is_none());
     assert!(parse_hello("HELLO").is_none());
 }
+
+/// The GUI is a client, so it must ship in lockstep with the TUI and server.
+/// Keep `gui/Cargo.toml` at the same version as the root package.
+#[test]
+fn the_gui_member_uses_the_same_version() {
+    let gui_manifest = include_str!("../gui/Cargo.toml");
+    let gui_version = gui_manifest
+        .lines()
+        .find_map(|line| line.trim().strip_prefix("version = "))
+        .expect("gui/Cargo.toml declares a version")
+        .trim_matches('"');
+    assert_eq!(gui_version, VERSION);
+}
+
+/// egui's dependency tree must never enter the TUI or server build graph.
+/// The GUI is a workspace member that depends on this package, never the
+/// other way round.
+#[test]
+fn the_root_package_does_not_depend_on_the_gui() {
+    let manifest = include_str!("../Cargo.toml");
+    for forbidden in ["eframe", "egui"] {
+        assert!(
+            !manifest.contains(forbidden),
+            "the root package must not depend on {forbidden}"
+        );
+    }
+}