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diff --git a/tests/typ/expr/assoc.typ b/tests/typ/expr/assoc.typ
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+// Test operator associativity.
+// Ref: false
+
+---
+// Math operators are left-associative.
+#test(10 / 2 / 2 == (10 / 2) / 2, true)
+#test(10 / 2 / 2 == 10 / (2 / 2), false)
+#test(1 / 2 * 3, 1.5)
+
+---
+// Assignment is right-associative.
+{
+    let x = 1
+    let y = 2
+    x = y = "ok"
+    test(x, none)
+    test(y, "ok")
+}