1 files changed, 31 insertions, 0 deletions
diff --git a/boot/tests/lower/compound_assigns.cskt b/boot/tests/lower/compound_assigns.cskt
new file mode 100644
index 0000000..214fe59
--- /dev/null
+++ b/boot/tests/lower/compound_assigns.cskt
@@ -0,0 +1,31 @@
+compound assignment operators are split during lowering.
+
+<<<
+
+main = fun () {
+    var x int = 0
+    x += 1
+    x *= 2
+    x -= 3
+}
+
+>>>
+
+(unit
+	(types
+		(type 0 int primitive)
+		(type 1 uint primitive)
+		(type 2 bool primitive)
+		(type 3 string primitive)
+		(type 4 float primitive)
+		(type 5 byte primitive)
+		(type 6 ascii primitive)
+		(type 7 void primitive))
+	(functions
+		(function 0 main main (returns (ref void)) (block
+			(declaration x (ref int) (initializer (expr 0)))
+			(assign (expr (name x)) (expr (binary + (expr (name x)) (expr 1))))
+			(assign (expr (name x)) (expr (binary * (expr (name x)) (expr 2))))
+			(assign (expr (name x)) (expr (binary - (expr (name x)) (expr 3))))
+		)))
+	(emission_order 0 1 2 3 4 5 6 7))