Checkpoint: preserve all uncommitted rust-rewrite worktree work

Safety commit before reconciling this worktree with main, which has
diverged with its own separate fixes today. Nothing here is reviewed
or curated yet - this exists purely so none of this work can be lost
to a git operation, disk issue, or worktree cleanup while that
reconciliation happens.

1 files changed, 14 insertions, 2 deletions

diff --git a/crates/wayland/src/state/tests.rs b/crates/wayland/src/state/tests.rs
index bccbae2..8d1d8b3 100644
--- a/crates/wayland/src/state/tests.rs
+++ b/crates/wayland/src/state/tests.rs
@@ -2,12 +2,15 @@
 
     #[test]
     fn focused_window_keeps_its_configured_colour() {
-        assert_eq!(effective_border_color((136, 192, 208), true), (136, 192, 208));
+        // The dim factor is irrelevant when focused - passing an
+        // obviously-wrong one here doubles as proof the early return never
+        // even looks at it.
+        assert_eq!(effective_border_color((136, 192, 208), true, 0.0), (136, 192, 208));
     }
 
     #[test]
     fn unfocused_window_is_dimmed_but_still_recognisably_that_colour() {
-        let dimmed = effective_border_color((136, 192, 208), false);
+        let dimmed = effective_border_color((136, 192, 208), false, 0.35);
         // Dimmer in every channel...
         assert!(dimmed.0 < 136 && dimmed.1 < 192 && dimmed.2 < 208);
         // ...but not black, and the channels' relative order is preserved
@@ -19,6 +22,15 @@
     }
 
     #[test]
+    fn inactive_dim_factor_is_actually_configurable() {
+        // `theme.decorations.border.inactive_dim` - `1.0` keeps an
+        // unfocused border identical to focused, `0.0` removes it entirely
+        // (fully black, matching every channel scaled to zero).
+        assert_eq!(effective_border_color((136, 192, 208), false, 1.0), (136, 192, 208));
+        assert_eq!(effective_border_color((136, 192, 208), false, 0.0), (0, 0, 0));
+    }
+
+    #[test]
     fn window_anim_starts_at_from_and_ends_at_to() {
         let anim = WindowAnim {
             from: srdwm_core::Rect::new(0, 100, 300, 200),