diff --git a/.github/workflows/llgo.yml b/.github/workflows/llgo.yml
index 1c5cbb9b..f3f4ed7b 100644
--- a/.github/workflows/llgo.yml
+++ b/.github/workflows/llgo.yml
@@ -137,7 +137,8 @@ jobs:
           go-version: ${{matrix.go}}
 
       - name: run llgo test
-        run: bash .github/workflows/llgo_test.sh
+        run: |
+          llgo test ./...
 
   hello:
     continue-on-error: true
diff --git a/.github/workflows/llgo_test.sh b/.github/workflows/llgo_test.sh
deleted file mode 100644
index 6137fd37..00000000
--- a/.github/workflows/llgo_test.sh
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/bin/bash
-
-set -e
-
-output=$(llgo test ./... 2>&1)
-echo "$output"
-
-pass_count=$(echo "$output" | grep -c "^PASS$")
-echo "llgo test pass count: $pass_count"
-
-if [ "$pass_count" -gt 1 ]; then
-    echo "llgo test ./... passed"
-    exit 0
-else
-    echo "llgo test ./... failed: PASS count is not greater than 1"
-    exit 1
-fi
diff --git a/test/bar/bar.go b/cl/_testgo/runextest/bar/bar.go
similarity index 100%
rename from test/bar/bar.go
rename to cl/_testgo/runextest/bar/bar.go
diff --git a/test/bar/bar_test.go b/cl/_testgo/runextest/bar/bar_test.go
similarity index 70%
rename from test/bar/bar_test.go
rename to cl/_testgo/runextest/bar/bar_test.go
index b3e25c2f..8d4c0438 100644
--- a/test/bar/bar_test.go
+++ b/cl/_testgo/runextest/bar/bar_test.go
@@ -3,7 +3,7 @@ package bar_test
 import (
 	"testing"
 
-	"github.com/goplus/llgo/test/bar"
+	"github.com/goplus/llgo/cl/_testgo/runextest/bar"
 )
 
 func TestBar(t *testing.T) {
diff --git a/test/bar/barinner/barinner.go b/cl/_testgo/runextest/bar/barinner/barinner.go
similarity index 100%
rename from test/bar/barinner/barinner.go
rename to cl/_testgo/runextest/bar/barinner/barinner.go
diff --git a/test/bar/barinner/barinner_test.go b/cl/_testgo/runextest/bar/barinner/barinner_test.go
similarity index 70%
rename from test/bar/barinner/barinner_test.go
rename to cl/_testgo/runextest/bar/barinner/barinner_test.go
index d2d79d03..12c543cd 100644
--- a/test/bar/barinner/barinner_test.go
+++ b/cl/_testgo/runextest/bar/barinner/barinner_test.go
@@ -3,7 +3,7 @@ package barinner_test
 import (
 	"testing"
 
-	"github.com/goplus/llgo/test/bar/barinner"
+	"github.com/goplus/llgo/cl/_testgo/runextest/bar/barinner"
 )
 
 func TestBarInner(t *testing.T) {
diff --git a/test/foo/foo.go b/cl/_testgo/runextest/foo/foo.go
similarity index 100%
rename from test/foo/foo.go
rename to cl/_testgo/runextest/foo/foo.go
diff --git a/test/foo/foo_test.go b/cl/_testgo/runextest/foo/foo_test.go
similarity index 70%
rename from test/foo/foo_test.go
rename to cl/_testgo/runextest/foo/foo_test.go
index aa11438a..5c2125e7 100644
--- a/test/foo/foo_test.go
+++ b/cl/_testgo/runextest/foo/foo_test.go
@@ -3,7 +3,7 @@ package foo_test
 import (
 	"testing"
 
-	"github.com/goplus/llgo/test/foo"
+	"github.com/goplus/llgo/cl/_testgo/runextest/foo"
 )
 
 func TestFoo(t *testing.T) {
diff --git a/cl/_testgo/runextest/main.go b/cl/_testgo/runextest/main.go
new file mode 100644
index 00000000..b3fd473c
--- /dev/null
+++ b/cl/_testgo/runextest/main.go
@@ -0,0 +1,16 @@
+package main
+
+import (
+	"github.com/goplus/llgo/cl/_testgo/runextest/bar"
+	"github.com/goplus/llgo/cl/_testgo/runextest/foo"
+)
+
+func Zoo() int {
+	return 3
+}
+
+func main() {
+	println("foo.Foo()", foo.Foo())
+	println("bar.Bar()", bar.Bar())
+	println("Zoo()", Zoo())
+}
diff --git a/cl/_testgo/runextest/main_test.go b/cl/_testgo/runextest/main_test.go
new file mode 100644
index 00000000..385de527
--- /dev/null
+++ b/cl/_testgo/runextest/main_test.go
@@ -0,0 +1,11 @@
+package main
+
+import (
+	"testing"
+)
+
+func TestZoo(t *testing.T) {
+	if Zoo() != 3 {
+		t.Fatal("Zoo() != 3")
+	}
+}
diff --git a/cl/_testgo/runextest/out.ll b/cl/_testgo/runextest/out.ll
new file mode 100644
index 00000000..1c8a0e79
--- /dev/null
+++ b/cl/_testgo/runextest/out.ll
@@ -0,0 +1 @@
+;
\ No newline at end of file
diff --git a/internal/build/build_test.go b/internal/build/build_test.go
index a7d3cf38..f2f8730f 100644
--- a/internal/build/build_test.go
+++ b/internal/build/build_test.go
@@ -4,7 +4,9 @@
 package build
 
 import (
+	"bytes"
 	"fmt"
+	"io"
 	"os"
 	"testing"
 
@@ -58,10 +60,36 @@ func TestRun(t *testing.T) {
 }
 
 func TestTest(t *testing.T) {
-	// fixme:with builtin package test in a llgo test ./... will cause duplicate symbol error
+	// FIXME(zzy): with builtin package test in a llgo test ./... will cause duplicate symbol error
 	mockRun([]string{"../../cl/_testgo/runtest"}, &Config{Mode: ModeTest})
 }
 
+func TestExtest(t *testing.T) {
+	originalStdout := os.Stdout
+	defer func() { os.Stdout = originalStdout }()
+
+	r, w, err := os.Pipe()
+	if err != nil {
+		t.Fatalf("os.Pipe failed: %v", err)
+	}
+	os.Stdout = w
+	outputChan := make(chan string)
+	go func() {
+		var data bytes.Buffer
+		io.Copy(&data, r)
+		outputChan <- data.String()
+	}()
+
+	mockRun([]string{"../../cl/_testgo/runextest/..."}, &Config{Mode: ModeTest})
+
+	w.Close()
+	got := <-outputChan
+	expected := "PASS\nPASS\nPASS\nPASS\n"
+	if got != expected {
+		t.Errorf("Expected output %q, but got %q", expected, got)
+	}
+}
+
 func TestCmpTest(t *testing.T) {
 	mockRun([]string{"../../cl/_testgo/runtest"}, &Config{Mode: ModeCmpTest})
 }