diff --git a/safety/safemap_test.go b/safety/safemap_test.go
new file mode 100644
index 0000000..9f0ca17
--- /dev/null
+++ b/safety/safemap_test.go
@@ -0,0 +1,63 @@
+package safety
+
+import (
+	"fmt"
+	"github.com/fthvgb1/wp-go/helper/number"
+	"github.com/fthvgb1/wp-go/taskPools"
+	"reflect"
+	"testing"
+)
+
+func TestMap_Load(t *testing.T) {
+	type args[K comparable] struct {
+		key K
+	}
+	m := NewMap[int, int]()
+	m.Store(1, 1)
+	type testCase[K comparable, V any] struct {
+		name      string
+		m         Map[K, V]
+		args      args[K]
+		wantValue V
+		wantOk    bool
+	}
+	tests := []testCase[int, int]{
+		{
+			name:      "t1",
+			m:         m,
+			args:      args[int]{1},
+			wantValue: 1,
+			wantOk:    true,
+		},
+	}
+	p := taskPools.NewPools(10)
+	var a0, a1 []int
+	for i := 0; i < 5000; i++ {
+		v := number.Rand(0, 1)
+		if 1 == v {
+			a1 = append(a1, 1)
+		} else {
+			a0 = append(a0, 0)
+		}
+		p.Execute(func() {
+			if 1 == v {
+				m.Load(number.Rand(2, 1000))
+			} else {
+				m.Store(number.Rand(2, 1000), number.Rand(1, 1000))
+			}
+		})
+
+	}
+	fmt.Println(len(a0), len(a1), m.Len())
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			gotValue, gotOk := tt.m.Load(tt.args.key)
+			if !reflect.DeepEqual(gotValue, tt.wantValue) {
+				t.Errorf("Load() gotValue = %v, want %v", gotValue, tt.wantValue)
+			}
+			if gotOk != tt.wantOk {
+				t.Errorf("Load() gotOk = %v, want %v", gotOk, tt.wantOk)
+			}
+		})
+	}
+}