diff --git a/tests/ref/rect-stroke-caps.png b/tests/ref/rect-stroke-caps.png
new file mode 100644
index 000000000..13a34ad9a
Binary files /dev/null and b/tests/ref/rect-stroke-caps.png differ
diff --git a/tests/suite/visualize/rect.typ b/tests/suite/visualize/rect.typ
index a659287e7..ba5792b78 100644
--- a/tests/suite/visualize/rect.typ
+++ b/tests/suite/visualize/rect.typ
@@ -54,6 +54,22 @@
 #v(3pt)
 #rect(width: 20pt, height: 20pt, stroke: (thickness: 5pt, join: "round"))
 
+--- rect-stroke-caps ---
+// Separated segments
+#rect(width: 20pt, height: 20pt, stroke: (
+  left: (cap: "round", thickness: 5pt),
+  right: (cap: "square", thickness: 7pt),
+))
+// Joined segment with different caps.
+#rect(width: 20pt, height: 20pt, stroke: (
+  left: (cap: "round", thickness: 5pt),
+  top: (cap: "square", thickness: 7pt),
+))
+// No caps when there is a radius for that corner.
+#rect(width: 20pt, height: 20pt, radius: (top: 3pt), stroke: (
+  left: (cap: "round", thickness: 5pt),
+  top: (cap: "square", thickness: 7pt),
+))
 --- red-stroke-bad-type ---
 // Error: 15-21 expected length, color, gradient, tiling, dictionary, stroke, none, or auto, found array
 #rect(stroke: (1, 2))