diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 7af6886..b66f75d 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -42,6 +42,7 @@ jobs:
           path-to-profile: /tmp/coverage/combined.txt
           flag-name: Go-${{ matrix.go }}
           parallel: true
+        if: ${{ github.event.repository.fork == false }}  # 仅在非 fork 时上传覆盖率
 
   check-coverage:
     name: Check coverage
@@ -51,14 +52,15 @@ jobs:
       - uses: shogo82148/actions-goveralls@v1
         with:
           parallel-finished: true
+        if: ${{ github.event.repository.fork == false }}  # 仅在非 fork 时检查覆盖率
 
   # 发布 Release
   release:
     name: Release a new version
     needs: [ lint, test ]
     runs-on: ubuntu-latest
-    # 仅在推送标签时执行
-    if: ${{ success() && startsWith(github.ref, 'refs/tags/v') }}
+    # 仅在推送标签时执行 - && - 仅在非 fork 时执行发布
+    if: ${{ github.event.repository.fork == false && success() && startsWith(github.ref, 'refs/tags/v') }}
     steps:
       # 1. 检出代码
       - name: Checkout code
diff --git a/check_value.go b/check_value.go
index 51bf9a8..c8cb863 100644
--- a/check_value.go
+++ b/check_value.go
@@ -60,13 +60,13 @@ func None[V comparable](v V) {
 	}
 }
 
-func Null[V *any](v any) {
+func Null[T any](v *T) {
 	if v != nil {
 		panic(errors.New("SHOULD BE NULL BUT IS FULL"))
 	}
 }
 
-func Full[V *any](v any) {
+func Full[T any](v *T) {
 	if v == nil {
 		panic(errors.New("SHOULD BE FULL BUT IS NULL"))
 	}
diff --git a/check_value_test.go b/check_value_test.go
index 4ad1c0a..7f7ff68 100644
--- a/check_value_test.go
+++ b/check_value_test.go
@@ -4,6 +4,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/require"
+	"github.com/yyle88/done/internal/tests"
 )
 
 func TestGood(t *testing.T) {
@@ -27,6 +28,24 @@ type Example struct {
 	S string
 }
 
-func newExample2x() (*Example, error) {
+func newExample() (*Example, error) {
 	return &Example{S: "xyz"}, nil
 }
+
+func TestNull(t *testing.T) {
+	var example *Example
+	Null(example)
+
+	tests.ExpectPanic(t, func() {
+		Null(&Example{S: "abc"})
+	})
+}
+
+func TestFull(t *testing.T) {
+	Full(&Example{S: "abc"})
+
+	tests.ExpectPanic(t, func() {
+		var example *Example
+		Full(example)
+	})
+}
diff --git a/check_vce_test.go b/check_vce_test.go
index 373a800..150a1fc 100644
--- a/check_vce_test.go
+++ b/check_vce_test.go
@@ -5,21 +5,21 @@ import (
 )
 
 func TestVE(t *testing.T) {
-	ve := VCE(newExample2x())
+	ve := VCE(newExample())
 	t.Log(ve.V)
 }
 
 func TestVe_Done(t *testing.T) {
-	example := VCE(newExample2x()).Done()
+	example := VCE(newExample()).Done()
 	t.Log(example.S)
 }
 
 func TestVe_Good(t *testing.T) {
-	VCE(newExample2x()).Good()
+	VCE(newExample()).Good()
 }
 
 func TestVe_Nice(t *testing.T) {
-	example := VCE(newExample2x()).Nice()
+	example := VCE(newExample()).Nice()
 	t.Log(example.S)
 }
 
diff --git a/go.mod b/go.mod
index 9c2734b..dd7b40f 100644
--- a/go.mod
+++ b/go.mod
@@ -5,14 +5,14 @@ go 1.22.6
 require (
 	github.com/pkg/errors v0.9.1
 	github.com/stretchr/testify v1.10.0
-	github.com/yyle88/zaplog v0.0.16
+	github.com/yyle88/zaplog v0.0.17
 	go.uber.org/zap v1.27.0
 )
 
 require (
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
-	github.com/yyle88/mutexmap v1.0.8 // indirect
+	github.com/yyle88/mutexmap v1.0.9 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.2.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
diff --git a/go.sum b/go.sum
index 636e758..34f7f7e 100644
--- a/go.sum
+++ b/go.sum
@@ -12,10 +12,10 @@ github.com/rogpeppe/go-internal v1.12.0 h1:exVL4IDcn6na9z1rAb56Vxr+CgyK3nn3O+epU
 github.com/rogpeppe/go-internal v1.12.0/go.mod h1:E+RYuTGaKKdloAfM02xzb0FW3Paa99yedzYV+kq4uf4=
 github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
 github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
-github.com/yyle88/mutexmap v1.0.8 h1:VntAdXID5wbk211LZEPVK96jQBxIcfVIbQuk9cv3P/8=
-github.com/yyle88/mutexmap v1.0.8/go.mod h1:QUYDuARLPlGj414kHewQ5tt8jkDxQXoai8H3C4Gg+yc=
-github.com/yyle88/zaplog v0.0.16 h1:ZCxQhq3+nWeWMAXIzeA1EA4exRq5Pn8pXTpEw1GjyD4=
-github.com/yyle88/zaplog v0.0.16/go.mod h1:0ct8Rh6uE5i9RG+xbH6d4/pyDBt9JmxBqHNCI+T4wiM=
+github.com/yyle88/mutexmap v1.0.9 h1:g1nfNmsReU/AgcGkLgPEKrBeMThJJBrJuvU7i3DOVC0=
+github.com/yyle88/mutexmap v1.0.9/go.mod h1:QUYDuARLPlGj414kHewQ5tt8jkDxQXoai8H3C4Gg+yc=
+github.com/yyle88/zaplog v0.0.17 h1:2exjnXROfkNRvcKZDAFUM2KDpca1n2OKrEH73pTvrX0=
+github.com/yyle88/zaplog v0.0.17/go.mod h1:SJvxdHW7zWu1r+K66oBPBWljiGnDjCV8le3SzQnJpBw=
 go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
 go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
 go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
diff --git a/internal/tests/tests.go b/internal/tests/tests.go
new file mode 100644
index 0000000..efdb68d
--- /dev/null
+++ b/internal/tests/tests.go
@@ -0,0 +1,19 @@
+package tests
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func ExpectPanic(t *testing.T, run func()) {
+	defer func() {
+		if recoverFrom := recover(); recoverFrom != nil {
+			t.Logf("expect panic then catch panic [%v] -> [success]", recoverFrom)
+			return
+		}
+		require.Fail(t, "expect panic while not panic -> [failure]")
+	}()
+
+	run()
+}
diff --git a/internal/tests/tests_test.go b/internal/tests/tests_test.go
new file mode 100644
index 0000000..e8a4700
--- /dev/null
+++ b/internal/tests/tests_test.go
@@ -0,0 +1,14 @@
+package tests_test
+
+import (
+	"testing"
+
+	"github.com/pkg/errors"
+	"github.com/yyle88/must/internal/tests"
+)
+
+func TestExpectPanic(t *testing.T) {
+	tests.ExpectPanic(t, func() {
+		panic(errors.New("expect-panic"))
+	})
+}