new rendering engine

crates/client-domain/tests/alignment_tests.rs

@@ -0,0 +1,47 @@
+use client_domain::{BoundingBox, HAlign, VAlign, align_offset};
+
+#[test]
+fn halign_left_is_zero_offset() {
+    let offset = align_offset(100, 60, HAlign::Left);
+    assert_eq!(offset, 0);
+}
+
+#[test]
+fn halign_center_centers_content() {
+    // 100px container, 60px content → 20px offset
+    let offset = align_offset(100, 60, HAlign::Center);
+    assert_eq!(offset, 20);
+}
+
+#[test]
+fn halign_right_pushes_to_end() {
+    // 100px container, 60px content → 40px offset
+    let offset = align_offset(100, 60, HAlign::Right);
+    assert_eq!(offset, 40);
+}
+
+#[test]
+fn valign_top_is_zero_offset() {
+    let offset = align_offset(200, 30, VAlign::Top);
+    assert_eq!(offset, 0);
+}
+
+#[test]
+fn valign_middle_centers_content() {
+    // 200px container, 30px content → 85px offset
+    let offset = align_offset(200, 30, VAlign::Middle);
+    assert_eq!(offset, 85);
+}
+
+#[test]
+fn valign_bottom_pushes_to_end() {
+    // 200px container, 30px content → 170px offset
+    let offset = align_offset(200, 30, VAlign::Bottom);
+    assert_eq!(offset, 170);
+}
+
+#[test]
+fn content_larger_than_container_clamps_to_zero() {
+    let offset = align_offset(50, 100, HAlign::Center);
+    assert_eq!(offset, 0);
+}