diff --git a/tests/22_floating_point.c b/tests/22_floating_point.c
index 6673c19..7261abd 100644
--- a/tests/22_floating_point.c
+++ b/tests/22_floating_point.c
@@ -33,3 +33,8 @@ printf("%f\n", a);
 // prefix operators
 printf("%f\n", +12.34);
 printf("%f\n", -12.34);
+
+// type coercion
+a = 2;
+printf("%f\n", a);
+printf("%f\n", sin(2));
diff --git a/tests/22_floating_point.expect b/tests/22_floating_point.expect
index efeed32..f4d2266 100644
--- a/tests/22_floating_point.expect
+++ b/tests/22_floating_point.expect
@@ -12,3 +12,5 @@
 0.21733
 12.34
 -12.34
+2.0
+0.9