diff --git a/ssa/ssa_test.go b/ssa/ssa_test.go
index 17b7ccf5..08f00f2d 100644
--- a/ssa/ssa_test.go
+++ b/ssa/ssa_test.go
@@ -25,6 +25,28 @@ import (
 	"github.com/goplus/llvm"
 )
 
+func TestSetBlock(t *testing.T) {
+	defer func() {
+		if r := recover(); r == nil {
+			t.Log("SetBlock: no error?")
+		}
+	}()
+	fn := &aFunction{}
+	b := &aBuilder{Func: fn}
+	b.SetBlock(&aBasicBlock{})
+}
+
+func TestSetBlockEx(t *testing.T) {
+	defer func() {
+		if r := recover(); r == nil {
+			t.Log("SetBlockEx: no error?")
+		}
+	}()
+	fn := &aFunction{}
+	b := &aBuilder{Func: fn}
+	b.SetBlockEx(&aBasicBlock{fn: fn}, -1)
+}
+
 func TestSetPython(t *testing.T) {
 	prog := NewProgram(nil)
 	typ := types.NewPackage("foo", "foo")