[WIP] Daemon & CLI

iota-cli/tests/layout_fit.rs

@@ -0,0 +1,45 @@
+use iota_cli::layout::fit::{
+    FitLevel, RequiredSize, centered_rect, inset_checked, reserve_vertical, select_fit_level,
+};
+use ratatui::layout::Rect;
+
+#[test]
+fn selects_fit_by_both_dimensions() {
+    let preferred = RequiredSize {
+        width: 80,
+        height: 20,
+    };
+    let compact = RequiredSize {
+        width: 50,
+        height: 12,
+    };
+    assert_eq!(
+        select_fit_level(Rect::new(0, 0, 80, 20), preferred, compact),
+        FitLevel::Preferred
+    );
+    assert_eq!(
+        select_fit_level(Rect::new(0, 0, 50, 12), preferred, compact),
+        FitLevel::Compact
+    );
+    assert_eq!(
+        select_fit_level(Rect::new(0, 0, 80, 11), preferred, compact),
+        FitLevel::Fallback
+    );
+}
+
+#[test]
+fn rectangle_helpers_do_not_underflow() {
+    let zero = Rect::new(4, 5, 0, 0);
+    assert_eq!(
+        centered_rect(
+            zero,
+            RequiredSize {
+                width: 10,
+                height: 10
+            }
+        ),
+        zero
+    );
+    assert_eq!(reserve_vertical(zero, 1, 0), None);
+    assert_eq!(inset_checked(zero, 1, 1), None);
+}