add sum test

1 files changed, 28 insertions, 0 deletions

diff --git a/tests/sum/sum.fwd b/tests/sum/sum.fwd
new file mode 100644
index 0000000..05a4632
--- /dev/null
+++ b/tests/sum/sum.fwd
@@ -0,0 +1,28 @@
+import "../../mod/libfwdio.so"
+
+sum_inner(i32 s, i32 n, (i32) res)
+{
+	if n <= 0 as i32 {
+		res(s);
+	} else {
+		sum_inner(s + n, n - 1 as i32, res);
+	}
+}
+
+sum(i32 n, (i32) res)
+{
+	sum_inner(0 as i32, n, res);
+}
+
+main()
+{
+	sum(1000000 as i32) => i32 s;
+	if s != 1784293664 as i32 {
+		fwdprint_str("expected 1784293664, got ");
+		fwdprint_i64(s as i64);
+		fwdprint_nl();
+	} else {
+		fwdprint_str("OK");
+		fwdprint_nl();
+	}
+}