diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index f43336d8..7005ee85 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -25,7 +25,10 @@ jobs:
       run: go build -v ./cmd/...
 
     - name: Test
-      run: go run ./script/run-test -v
+      run: go run ./script/run-test -v -cover -coverpkg github.com/xhd2015/xgo/runtime/... -coverprofile covers/cover.out
+
+    - name: Print coverage
+      run: cd runtime && go tool cover --func ../covers/cover-runtime.out
 
     - name: Build Release
       run: go run ./script/build-release
diff --git a/.gitignore b/.gitignore
index 583e9b51..309e19c8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,4 +23,8 @@
 
 # generated traces
 /runtime/test/**/*.json
-/test/**/*.json
\ No newline at end of file
+/test/**/*.json
+
+# coverage
+/covers
+cover*.out
\ No newline at end of file
diff --git a/README.md b/README.md
index 252fe9df..6bc63215 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,9 @@
+
 # xgo
+[![Go Reference](https://pkg.go.dev/badge/github.com/xhd2015/xgo.svg)](https://pkg.go.dev/github.com/xhd2015/xgo)
+[![Go Report Card](https://goreportcard.com/badge/github.com/xhd2015/xgo)](https://goreportcard.com/report/github.com/xhd2015/xgo)
+[![Go Coverage](https://img.shields.io/badge/Coverage-71.9%25-brightgreen)](https://github.com/xhd2015/xgo/actions)
+[![CI](https://github.com/xhd2015/xgo/workflows/Go/badge.svg)](https://github.com/xhd2015/xgo/actions)
 
 **English | [简体中文](./README_zh_cn.md)**
 
diff --git a/cmd/xgo/debug.go b/cmd/xgo/debug.go
index ffc91e98..7e55d094 100644
--- a/cmd/xgo/debug.go
+++ b/cmd/xgo/debug.go
@@ -19,13 +19,12 @@ func getVscodeDebugFile(tmpDir string, vscode string) (vscodeDebugFile string, s
 	} else if vscode == "stdout" || strings.HasPrefix(vscode, stdoutParamPrefix) {
 		vscodeDebugFile = filepath.Join(tmpDir, "vscode_launch.json")
 	} else {
-		f, err := os.Stat(vscode)
-		if err != nil {
-			if !errors.Is(err, os.ErrNotExist) {
-				return "", "", fmt.Errorf("check vscode debug flag: %w", err)
+		f, statErr := os.Stat(vscode)
+		if statErr != nil {
+			if !errors.Is(statErr, os.ErrNotExist) {
+				return "", "", fmt.Errorf("check vscode debug flag: %w", statErr)
 
 			}
-			err = nil
 			// treat as file
 		}
 		if f != nil && f.IsDir() {
diff --git a/cmd/xgo/patch.go b/cmd/xgo/patch.go
index 2f8ab7b9..e71505b9 100644
--- a/cmd/xgo/patch.go
+++ b/cmd/xgo/patch.go
@@ -29,7 +29,7 @@ func patchRuntimeAndCompiler(origGoroot string, goroot string, xgoSrc string, go
 		return fmt.Errorf("requires goroot")
 	}
 	if isDevelopment && xgoSrc == "" {
-		return fmt.Errorf("requries xgoSrc")
+		return fmt.Errorf("requires xgoSrc")
 	}
 	if !isDevelopment && !revisionChanged {
 		return nil
@@ -892,12 +892,11 @@ func syncGoroot(goroot string, dstDir string, forceCopy bool) error {
 			return fmt.Errorf("bad goroot: %s", goroot)
 		}
 
-		dstFile, err := os.Stat(dstGoBin)
-		if err != nil {
-			if !os.IsNotExist(err) {
-				return err
+		dstFile, statErr := os.Stat(dstGoBin)
+		if statErr != nil {
+			if !os.IsNotExist(statErr) {
+				return statErr
 			}
-			err = nil
 		}
 
 		if dstFile != nil && !dstFile.IsDir() && dstFile.Size() == srcFile.Size() {
@@ -965,7 +964,7 @@ func buildInstrumentTool(goroot string, xgoSrc string, compilerBin string, compi
 // but if that is not found, we can fallback to ~/.xgo/bin/exec_tool
 // because exec_tool changes rarely, so it is safe to use
 // an older version.
-// we may add version to check if exec_tool is compitable
+// we may add version to check if exec_tool is compatible
 func findBuiltExecTool() (string, error) {
 	dirName := filepath.Dir(os.Args[0])
 	absDirName, err := filepath.Abs(dirName)
@@ -1008,12 +1007,11 @@ func buildCompiler(goroot string, output string) error {
 }
 
 func compareAndUpdateCompilerID(compilerFile string, compilerIDFile string) (changed bool, err error) {
-	prevData, err := ioutil.ReadFile(compilerIDFile)
-	if err != nil {
-		if !errors.Is(err, os.ErrNotExist) {
-			return false, err
+	prevData, statErr := ioutil.ReadFile(compilerIDFile)
+	if statErr != nil {
+		if !errors.Is(statErr, os.ErrNotExist) {
+			return false, statErr
 		}
-		err = nil
 	}
 	prevID := string(prevData)
 	curID, err := getBuildID(compilerFile)
diff --git a/cmd/xgo/patch/runtime_def_gen.go b/cmd/xgo/patch/runtime_def_gen.go
index 05e8f09d..3cf4cc54 100644
--- a/cmd/xgo/patch/runtime_def_gen.go
+++ b/cmd/xgo/patch/runtime_def_gen.go
@@ -18,4 +18,4 @@ func __xgo_on_test_start(fn interface{})
 func __xgo_get_test_starts() []interface{}
 func __xgo_peek_panic() interface{}
 func __xgo_mem_equal(a, b unsafe.Pointer, size uintptr) bool
-func __xgo_get_pc_name(pc uintptr) string`
+func __xgo_get_pc_name(pc uintptr) string`
\ No newline at end of file
diff --git a/cmd/xgo/version.go b/cmd/xgo/version.go
index 28249b46..ea982900 100644
--- a/cmd/xgo/version.go
+++ b/cmd/xgo/version.go
@@ -3,8 +3,8 @@ package main
 import "fmt"
 
 const VERSION = "1.0.11"
-const REVISION = "e0f9e969d9f62daa515c94bbde128f91a029b38e+1"
-const NUMBER = 131
+const REVISION = "6d76bd0ec32e7b161f19ac216fc42af3eccecadd+1"
+const NUMBER = 132
 
 func getRevision() string {
 	return fmt.Sprintf("%s %s BUILD_%d", VERSION, REVISION, NUMBER)
diff --git a/runtime/core/version.go b/runtime/core/version.go
index 0a5d1a3f..ea708ade 100644
--- a/runtime/core/version.go
+++ b/runtime/core/version.go
@@ -7,8 +7,8 @@ import (
 )
 
 const VERSION = "1.0.11"
-const REVISION = "e0f9e969d9f62daa515c94bbde128f91a029b38e+1"
-const NUMBER = 131
+const REVISION = "6d76bd0ec32e7b161f19ac216fc42af3eccecadd+1"
+const NUMBER = 132
 
 // these fields will be filled by compiler
 const XGO_VERSION = ""
@@ -40,7 +40,7 @@ func checkVersion() error {
 			return errors.New("newer xgo available, consider run 'xgo upgrade'")
 		}
 		// only one case is feasible: XGO_NUMBER >= runtime NUMBER
-		// because xgo can be compitable with older sdk
+		// because xgo can be compatible with older sdk
 		return nil
 	}
 	var updateCmd string
@@ -49,5 +49,5 @@ func checkVersion() error {
 	} else {
 		updateCmd = "go get github.com/xhd2015/xgo/runtime@latest"
 	}
-	return fmt.Errorf("xgo v%s maybe incompitable with xgo/runtime v%s, consider run '%s'", XGO_VERSION, VERSION, updateCmd)
+	return fmt.Errorf("xgo v%s maybe incompatible with xgo/runtime v%s, consider run '%s'", XGO_VERSION, VERSION, updateCmd)
 }
diff --git a/script/run-test/main.go b/script/run-test/main.go
index 5ec2fd62..5473508d 100644
--- a/script/run-test/main.go
+++ b/script/run-test/main.go
@@ -56,6 +56,10 @@ func main() {
 	var xgoTestOnly bool
 	var xgoRuntimeTestOnly bool
 	var xgoDefaultTestOnly bool
+
+	var cover bool
+	var coverpkgs []string
+	var coverprofile string
 	for i := 0; i < n; i++ {
 		arg := args[i]
 		if arg == "--exclude" {
@@ -103,6 +107,20 @@ func main() {
 			xgoDefaultTestOnly = true
 			continue
 		}
+		if arg == "-cover" {
+			cover = true
+			continue
+		}
+		if arg == "-coverpkg" {
+			coverpkgs = append(coverpkgs, args[i+1])
+			i++
+			continue
+		}
+		if arg == "-coverprofile" {
+			coverprofile = args[i+1]
+			i++
+			continue
+		}
 		if arg == "--" {
 			if i+1 < n {
 				remainArgs = append(remainArgs, args[i+1:]...)
@@ -116,6 +134,14 @@ func main() {
 		fmt.Fprintf(os.Stderr, "unknown flag: %s\n", arg)
 		os.Exit(1)
 	}
+	if coverprofile != "" {
+		absProfile, err := filepath.Abs(coverprofile)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "%v\n", err)
+			os.Exit(1)
+		}
+		coverprofile = absProfile
+	}
 	goRelease := "go-release"
 	var goroots []string
 	_, err := os.Stat(goRelease)
@@ -199,8 +225,28 @@ func main() {
 			runXgoTestFlag = false
 			runDefault = true
 		}
+		addArgs := func(args []string, variant string) []string {
+			if cover {
+				args = append(args, "-cover")
+			}
+			for _, coverPkg := range coverpkgs {
+				args = append(args, "-coverpkg", coverPkg)
+			}
+			if coverprofile != "" {
+				var prefix string
+				var suffix string
+				idx := strings.LastIndex(coverprofile, ".")
+				if idx < 0 {
+					prefix = coverprofile
+				} else {
+					prefix, suffix = coverprofile[:idx], coverprofile[idx:]
+				}
+				args = append(args, "-coverprofile", prefix+"-"+variant+suffix)
+			}
+			return args
+		}
 		if runXgoTestFlag {
-			err := runXgoTest(goroot, remainArgs, remainTests)
+			err := runXgoTest(goroot, addArgs(remainArgs, "xgo"), remainTests)
 			if err != nil {
 				fmt.Fprintf(os.Stdout, "FAIL %s: %v(%v)\n", goroot, err, time.Since(begin))
 				os.Exit(1)
@@ -208,14 +254,14 @@ func main() {
 		}
 
 		if runRuntimeTestFlag {
-			err := runRuntimeTest(goroot, remainArgs, remainTests)
+			err := runRuntimeTest(goroot, addArgs(remainArgs, "runtime"), remainTests)
 			if err != nil {
 				fmt.Fprintf(os.Stdout, "FAIL %s: %v(%v)\n", goroot, err, time.Since(begin))
 				os.Exit(1)
 			}
 		}
 		if runDefault {
-			err := runDefaultTest(goroot, remainArgs, remainTests)
+			err := runDefaultTest(goroot, addArgs(remainArgs, "default"), remainTests)
 			if err != nil {
 				fmt.Fprintf(os.Stdout, "FAIL %s: %v(%v)\n", goroot, err, time.Since(begin))
 				os.Exit(1)
diff --git a/test/func_list_test.go b/test/func_list_test.go
index 1e3c4052..d1e6e38f 100644
--- a/test/func_list_test.go
+++ b/test/func_list_test.go
@@ -34,7 +34,7 @@ func TestFuncList(t *testing.T) {
 	expectMainLines := []string{
 		"func:main example",
 		"func:main someInt.value",
-		// "func:main (*someInt).inc", // this output is replaced with a simplier display name
+		// "func:main (*someInt).inc", // this output is replaced with a simpler display name
 		"func:main someInt.inc",
 	}