diff --git a/g/util/gutil/gutil_comparator_z_unit_test.go b/g/util/gutil/gutil_comparator_z_unit_test.go
new file mode 100755
index 000000000..99c672190
--- /dev/null
+++ b/g/util/gutil/gutil_comparator_z_unit_test.go
@@ -0,0 +1,156 @@
+package gutil_test
+
+import (
+	"testing"
+
+	"github.com/gogf/gf/g/test/gtest"
+	"github.com/gogf/gf/g/util/gutil"
+)
+
+func Test_ComparatorString(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.ComparatorString(1, 1), 0)
+		gtest.Assert(gutil.ComparatorString(1, 2), -1)
+		gtest.Assert(gutil.ComparatorString(2, 1), 1)
+	})
+}
+
+func Test_ComparatorInt(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.ComparatorInt(1, 1), 0)
+		gtest.Assert(gutil.ComparatorInt(1, 2), -1)
+		gtest.Assert(gutil.ComparatorInt(2, 1), 1)
+	})
+}
+
+func Test_ComparatorInt8(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.ComparatorInt8(1, 1), 0)
+		gtest.Assert(gutil.ComparatorInt8(1, 2), -1)
+		gtest.Assert(gutil.ComparatorInt8(2, 1), 1)
+	})
+}
+
+func Test_ComparatorInt16(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.ComparatorInt16(1, 1), 0)
+		gtest.Assert(gutil.ComparatorInt16(1, 2), -1)
+		gtest.Assert(gutil.ComparatorInt16(2, 1), 1)
+	})
+}
+
+func Test_ComparatorInt32(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.ComparatorInt32(1, 1), 0)
+		gtest.Assert(gutil.ComparatorInt32(1, 2), -1)
+		gtest.Assert(gutil.ComparatorInt32(2, 1), 1)
+	})
+}
+
+func Test_ComparatorInt64(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.ComparatorInt64(1, 1), 0)
+		gtest.Assert(gutil.ComparatorInt64(1, 2), -1)
+		gtest.Assert(gutil.ComparatorInt64(2, 1), 1)
+	})
+}
+
+func Test_ComparatorUint(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.ComparatorUint(1, 1), 0)
+		gtest.Assert(gutil.ComparatorUint(1, 2), -1)
+		gtest.Assert(gutil.ComparatorUint(2, 1), 1)
+	})
+}
+
+func Test_ComparatorUint8(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.ComparatorUint8(1, 1), 0)
+		gtest.Assert(gutil.ComparatorUint8(2, 6), 252)
+		gtest.Assert(gutil.ComparatorUint8(2, 1), 1)
+	})
+}
+
+func Test_ComparatorUint16(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.ComparatorUint16(1, 1), 0)
+		gtest.Assert(gutil.ComparatorUint16(1, 2), 65535)
+		gtest.Assert(gutil.ComparatorUint16(2, 1), 1)
+	})
+}
+
+func Test_ComparatorUint32(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.ComparatorUint32(1, 1), 0)
+		gtest.Assert(gutil.ComparatorUint32(-1000, 2147483640), 2147482656)
+		gtest.Assert(gutil.ComparatorUint32(2, 1), 1)
+	})
+}
+
+func Test_ComparatorUint64(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.ComparatorUint64(1, 1), 0)
+		gtest.Assert(gutil.ComparatorUint64(1, 2), -1)
+		gtest.Assert(gutil.ComparatorUint64(2, 1), 1)
+	})
+}
+
+func Test_ComparatorFloat32(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.ComparatorFloat32(1, 1), 0)
+		gtest.Assert(gutil.ComparatorFloat32(1, 2), -1)
+		gtest.Assert(gutil.ComparatorFloat32(2, 1), 1)
+	})
+}
+
+func Test_ComparatorFloat64(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.ComparatorFloat64(1, 1), 0)
+		gtest.Assert(gutil.ComparatorFloat64(1, 2), -1)
+		gtest.Assert(gutil.ComparatorFloat64(2, 1), 1)
+	})
+}
+
+func Test_ComparatorByte(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.ComparatorByte(1, 1), 0)
+		gtest.Assert(gutil.ComparatorByte(1, 2), 255)
+		gtest.Assert(gutil.ComparatorByte(2, 1), 1)
+	})
+}
+
+func Test_ComparatorRune(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.ComparatorRune(1, 1), 0)
+		gtest.Assert(gutil.ComparatorRune(1, 2), -1)
+		gtest.Assert(gutil.ComparatorRune(2, 1), 1)
+	})
+}
+
+func Test_ComparatorTime(t *testing.T) {
+	gtest.Case(t, func() {
+		j := gutil.ComparatorTime("2019-06-14", "2019-06-14")
+		gtest.Assert(j, 0)
+
+		k := gutil.ComparatorTime("2019-06-15", "2019-06-14")
+		gtest.Assert(k, 1)
+
+		l := gutil.ComparatorTime("2019-06-13", "2019-06-14")
+		gtest.Assert(l, -1)
+	})
+}
diff --git a/g/util/gutil/gutil_z_unit_test.go b/g/util/gutil/gutil_z_unit_test.go
new file mode 100755
index 000000000..2c25edb47
--- /dev/null
+++ b/g/util/gutil/gutil_z_unit_test.go
@@ -0,0 +1,66 @@
+package gutil_test
+
+import (
+	"testing"
+
+	"github.com/gogf/gf/g/test/gtest"
+	"github.com/gogf/gf/g/util/gutil"
+)
+
+func Test_Dump(t *testing.T) {
+	gtest.Case(t, func() {
+		gutil.Dump(map[int]int{
+			100: 100,
+		})
+	})
+
+	gtest.Case(t, func() {
+		gutil.Dump(map[string]interface{}{"": func() {}})
+	})
+
+	gtest.Case(t, func() {
+		gutil.Dump([]byte("gutil Dump test"))
+	})
+}
+
+func Test_PrintBacktrace(t *testing.T) {
+	gtest.Case(t, func() {
+		gutil.PrintBacktrace()
+	})
+}
+
+func Test_TryCatch(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gutil.TryCatch(func() {
+			panic("gutil TryCatch test")
+		})
+	})
+
+	gtest.Case(t, func() {
+		gutil.TryCatch(func() {
+			panic("gutil TryCatch test")
+
+		}, func(err interface{}) {
+			gtest.Assert(err, "gutil TryCatch test")
+		})
+	})
+}
+
+func Test_IsEmpty(t *testing.T) {
+
+	gtest.Case(t, func() {
+		gtest.Assert(gutil.IsEmpty(1), false)
+	})
+}
+
+func Test_Throw(t *testing.T) {
+
+	gtest.Case(t, func() {
+		defer func() {
+			gtest.Assert(recover(), "gutil Throw test")
+		}()
+
+		gutil.Throw("gutil Throw test")
+	})
+}