diff --git a/container/garray/garray_z_unit_normal_int_test.go b/container/garray/garray_z_unit_normal_int_test.go
index 83020871f6d..9d7dd814a49 100644
--- a/container/garray/garray_z_unit_normal_int_test.go
+++ b/container/garray/garray_z_unit_normal_int_test.go
@@ -642,6 +642,7 @@ func TestIntArray_Json(t *testing.T) {
 
 		a2 := garray.NewIntArray()
 		err1 = json.UnmarshalUseNumber(b2, &a2)
+		t.AssertNil(err1)
 		t.Assert(a2.Slice(), s1)
 
 		var a3 garray.IntArray
@@ -660,6 +661,7 @@ func TestIntArray_Json(t *testing.T) {
 
 		a2 := garray.NewIntArray()
 		err1 = json.UnmarshalUseNumber(b2, &a2)
+		t.AssertNil(err1)
 		t.Assert(a2.Slice(), s1)
 
 		var a3 garray.IntArray
diff --git a/container/garray/garray_z_unit_normal_str_test.go b/container/garray/garray_z_unit_normal_str_test.go
index 7907db0109d..f71ec473d03 100644
--- a/container/garray/garray_z_unit_normal_str_test.go
+++ b/container/garray/garray_z_unit_normal_str_test.go
@@ -654,6 +654,7 @@ func TestStrArray_Json(t *testing.T) {
 
 		a2 := garray.NewStrArray()
 		err1 = json.UnmarshalUseNumber(b2, &a2)
+		t.AssertNil(err1)
 		t.Assert(a2.Slice(), s1)
 
 		var a3 garray.StrArray
@@ -672,6 +673,7 @@ func TestStrArray_Json(t *testing.T) {
 
 		a2 := garray.NewStrArray()
 		err1 = json.UnmarshalUseNumber(b2, &a2)
+		t.AssertNil(err1)
 		t.Assert(a2.Slice(), s1)
 
 		var a3 garray.StrArray
diff --git a/container/garray/garray_z_unit_sorted_any_test.go b/container/garray/garray_z_unit_sorted_any_test.go
index 1fd45a53cc1..3be78342edc 100644
--- a/container/garray/garray_z_unit_sorted_any_test.go
+++ b/container/garray/garray_z_unit_sorted_any_test.go
@@ -710,6 +710,7 @@ func TestSortedArray_Json(t *testing.T) {
 
 		a2 := garray.NewSortedArray(gutil.ComparatorString)
 		err1 = json.UnmarshalUseNumber(b2, &a2)
+		t.AssertNil(err1)
 		t.Assert(a2.Slice(), s2)
 
 		var a3 garray.SortedArray
@@ -730,6 +731,7 @@ func TestSortedArray_Json(t *testing.T) {
 
 		a2 := garray.NewSortedArray(gutil.ComparatorString)
 		err1 = json.UnmarshalUseNumber(b2, &a2)
+		t.AssertNil(err1)
 		t.Assert(a2.Slice(), s2)
 
 		var a3 garray.SortedArray
diff --git a/container/garray/garray_z_unit_sorted_int_test.go b/container/garray/garray_z_unit_sorted_int_test.go
index 1fc3ee92a5e..65c921611f0 100644
--- a/container/garray/garray_z_unit_sorted_int_test.go
+++ b/container/garray/garray_z_unit_sorted_int_test.go
@@ -613,6 +613,7 @@ func TestSortedIntArray_Json(t *testing.T) {
 
 		a2 := garray.NewSortedIntArray()
 		err1 = json.UnmarshalUseNumber(b2, &a2)
+		t.AssertNil(err1)
 		t.Assert(a2.Slice(), s2)
 
 		var a3 garray.SortedIntArray
@@ -632,6 +633,7 @@ func TestSortedIntArray_Json(t *testing.T) {
 
 		a2 := garray.NewSortedIntArray()
 		err1 = json.UnmarshalUseNumber(b2, &a2)
+		t.AssertNil(err1)
 		t.Assert(a2.Slice(), s2)
 
 		var a3 garray.SortedIntArray
diff --git a/container/garray/garray_z_unit_sorted_str_test.go b/container/garray/garray_z_unit_sorted_str_test.go
index 380297f3b11..458f9043a1f 100644
--- a/container/garray/garray_z_unit_sorted_str_test.go
+++ b/container/garray/garray_z_unit_sorted_str_test.go
@@ -622,6 +622,7 @@ func TestSortedStrArray_Json(t *testing.T) {
 
 		a2 := garray.NewSortedStrArray()
 		err1 = json.UnmarshalUseNumber(b2, &a2)
+		t.AssertNil(err1)
 		t.Assert(a2.Slice(), s2)
 		t.Assert(a2.Interfaces(), s2)
 
@@ -643,6 +644,7 @@ func TestSortedStrArray_Json(t *testing.T) {
 
 		a2 := garray.NewSortedStrArray()
 		err1 = json.UnmarshalUseNumber(b2, &a2)
+		t.AssertNil(err1)
 		t.Assert(a2.Slice(), s2)
 		t.Assert(a2.Interfaces(), s2)
 
diff --git a/container/glist/glist_z_unit_test.go b/container/glist/glist_z_unit_test.go
index 2a6dbc8ec2f..36984790f2a 100644
--- a/container/glist/glist_z_unit_test.go
+++ b/container/glist/glist_z_unit_test.go
@@ -631,10 +631,7 @@ func TestList_IteratorAsc(t *testing.T) {
 		l.PushFronts(a1)
 		e1 := l.Back()
 		fun1 := func(e *Element) bool {
-			if gconv.Int(e1.Value) > 2 {
-				return true
-			}
-			return false
+			return gconv.Int(e1.Value) > 2
 		}
 		checkList(t, l, []interface{}{4, 3, 6, 5, 2, 1})
 		l.IteratorAsc(fun1)
@@ -649,10 +646,7 @@ func TestList_IteratorDesc(t *testing.T) {
 		l.PushFronts(a1)
 		e1 := l.Back()
 		fun1 := func(e *Element) bool {
-			if gconv.Int(e1.Value) > 6 {
-				return true
-			}
-			return false
+			return gconv.Int(e1.Value) > 6
 		}
 		l.IteratorDesc(fun1)
 		t.Assert(l.Len(), 4)
@@ -667,10 +661,7 @@ func TestList_Iterator(t *testing.T) {
 		l.PushFronts(a1)
 		e1 := l.Back()
 		fun1 := func(e *Element) bool {
-			if gconv.String(e1.Value) > "c" {
-				return true
-			}
-			return false
+			return gconv.String(e1.Value) > "c"
 		}
 		checkList(t, l, []interface{}{"e", "d", "c", "b", "a"})
 		l.Iterator(fun1)
diff --git a/encoding/gjson/gjson_z_unit_feature_set_test.go b/encoding/gjson/gjson_z_unit_feature_set_test.go
index 0e48d52902c..1685e816f4e 100644
--- a/encoding/gjson/gjson_z_unit_feature_set_test.go
+++ b/encoding/gjson/gjson_z_unit_feature_set_test.go
@@ -26,7 +26,7 @@ func Test_Set1(t *testing.T) {
 	p.Set("k1.k11", []int{1, 2, 3})
 	if c, err := p.ToJson(); err == nil {
 
-		if bytes.Compare(c, []byte(`{"k1":{"k11":[1,2,3]},"k2":"v2"}`)) != 0 {
+		if !bytes.Equal(c, []byte(`{"k1":{"k11":[1,2,3]},"k2":"v2"}`)) {
 			t.Error("expect:", string(e))
 		}
 	} else {
@@ -51,7 +51,7 @@ func Test_Set3(t *testing.T) {
 		"k1": "v1",
 	})
 	if c, err := p.ToJson(); err == nil {
-		if bytes.Compare(c, e) != 0 {
+		if !bytes.Equal(c, e) {
 			t.Error("expect:", string(e))
 		}
 	} else {
@@ -67,7 +67,7 @@ func Test_Set4(t *testing.T) {
 	})
 	if c, err := p.ToJson(); err == nil {
 
-		if bytes.Compare(c, e) != 0 {
+		if !bytes.Equal(c, e) {
 			t.Error("expect:", string(e))
 		}
 	} else {
@@ -81,7 +81,7 @@ func Test_Set5(t *testing.T) {
 	p.Set("0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0", []int{1, 2, 3})
 	if c, err := p.ToJson(); err == nil {
 
-		if bytes.Compare(c, e) != 0 {
+		if !bytes.Equal(c, e) {
 			t.Error("expect:", string(e))
 		}
 	} else {
@@ -95,7 +95,7 @@ func Test_Set6(t *testing.T) {
 	p.Set("1", []int{1, 2, 3})
 	if c, err := p.ToJson(); err == nil {
 
-		if bytes.Compare(c, e) != 0 {
+		if !bytes.Equal(c, e) {
 			t.Error("expect:", string(e))
 		}
 	} else {
@@ -112,7 +112,7 @@ func Test_Set7(t *testing.T) {
 	p.Set("0.1", []int{1, 2, 3})
 	if c, err := p.ToJson(); err == nil {
 
-		if bytes.Compare(c, e) != 0 {
+		if !bytes.Equal(c, e) {
 			t.Error("expect:", string(e))
 		}
 	} else {
@@ -129,7 +129,7 @@ func Test_Set8(t *testing.T) {
 	p.Set("0.0.0.0.0.0.1", []int{1, 2, 3})
 	if c, err := p.ToJson(); err == nil {
 
-		if bytes.Compare(c, e) != 0 {
+		if !bytes.Equal(c, e) {
 			t.Error("expect:", string(e))
 		}
 	} else {
@@ -146,7 +146,7 @@ func Test_Set9(t *testing.T) {
 	p.Set("k1.1", []int{1, 2, 3})
 	if c, err := p.ToJson(); err == nil {
 
-		if bytes.Compare(c, e) != 0 {
+		if !bytes.Equal(c, e) {
 			t.Error("expect:", string(e))
 		}
 	} else {
@@ -160,7 +160,7 @@ func Test_Set10(t *testing.T) {
 	p.Set("a.b.c", 1)
 	if c, err := p.ToJson(); err == nil {
 
-		if bytes.Compare(c, e) != 0 {
+		if !bytes.Equal(c, e) {
 			t.Error("expect:", string(e))
 		}
 	} else {
@@ -174,7 +174,7 @@ func Test_Set11(t *testing.T) {
 	p.Remove("a.b.c")
 	if c, err := p.ToJson(); err == nil {
 
-		if bytes.Compare(c, e) != 0 {
+		if !bytes.Equal(c, e) {
 			t.Error("expect:", string(e))
 		}
 	} else {
@@ -189,7 +189,7 @@ func Test_Set12(t *testing.T) {
 	p.Set("1", 1)
 	if c, err := p.ToJson(); err == nil {
 
-		if bytes.Compare(c, e) != 0 {
+		if !bytes.Equal(c, e) {
 			t.Error("expect:", string(e))
 		}
 	} else {
@@ -204,7 +204,7 @@ func Test_Set13(t *testing.T) {
 	p.Set("array.1", 1)
 	if c, err := p.ToJson(); err == nil {
 
-		if bytes.Compare(c, e) != 0 {
+		if !bytes.Equal(c, e) {
 			t.Error("expect:", string(e))
 		}
 	} else {
@@ -219,7 +219,7 @@ func Test_Set14(t *testing.T) {
 	p.Set("f.a", 1)
 	if c, err := p.ToJson(); err == nil {
 
-		if bytes.Compare(c, e) != 0 {
+		if !bytes.Equal(c, e) {
 			t.Error("expect:", string(e))
 		}
 	} else {
diff --git a/encoding/gxml/gxml_z_unit_test.go b/encoding/gxml/gxml_z_unit_test.go
index 649e730fc7e..28a8a993f3f 100644
--- a/encoding/gxml/gxml_z_unit_test.go
+++ b/encoding/gxml/gxml_z_unit_test.go
@@ -73,7 +73,7 @@ func Test_XmlToJson(t *testing.T) {
 			t.Errorf("dstXml to json error. %s", dstXml)
 		}
 
-		if bytes.Compare(srcJson, dstJson) != 0 {
+		if !bytes.Equal(srcJson, dstJson) {
 			t.Errorf("convert to json error. srcJson:%s, dstJson:%s", string(srcJson), string(dstJson))
 		}
 
diff --git a/internal/empty/empty_z_unit_test.go b/internal/empty/empty_z_unit_test.go
index 36dc504ab9a..6b9efed1e58 100644
--- a/internal/empty/empty_z_unit_test.go
+++ b/internal/empty/empty_z_unit_test.go
@@ -35,7 +35,7 @@ func TestIsEmpty(t *testing.T) {
 		tmpT1 := "0"
 		tmpT2 := func() {}
 		tmpT2 = nil
-		tmpT3 := make(chan int, 0)
+		tmpT3 := make(chan int)
 		var (
 			tmpT4 TestPerson  = nil
 			tmpT5 *TestPerson = nil
diff --git a/internal/utils/utils_str.go b/internal/utils/utils_str.go
index 44c9f0db0cb..d222457332f 100644
--- a/internal/utils/utils_str.go
+++ b/internal/utils/utils_str.go
@@ -73,10 +73,7 @@ func IsNumeric(s string) bool {
 			return false
 		}
 	}
-	if dotCount > 1 {
-		return false
-	}
-	return true
+	return dotCount <= 1
 }
 
 // UcFirst returns a copy of the string s with the first letter mapped to its upper case.
diff --git a/net/gtcp/gtcp_z_unit_pool_test.go b/net/gtcp/gtcp_z_unit_pool_test.go
index 8dbfd84a847..7fc19d8d8d2 100644
--- a/net/gtcp/gtcp_z_unit_pool_test.go
+++ b/net/gtcp/gtcp_z_unit_pool_test.go
@@ -7,7 +7,6 @@
 package gtcp_test
 
 import (
-	"fmt"
 	"testing"
 	"time"
 
@@ -42,7 +41,7 @@ func Test_Pool_Basic1(t *testing.T) {
 	})
 
 	gtest.C(t, func(t *gtest.T) {
-		_, err := gtcp.NewPoolConn(fmt.Sprintf("127.0.0.1:80"))
+		_, err := gtcp.NewPoolConn("127.0.0.1:80")
 		t.AssertNE(err, nil)
 	})
 }
diff --git a/os/glog/glog_logger_config.go b/os/glog/glog_logger_config.go
index fca3d4f79df..916665e2db9 100644
--- a/os/glog/glog_logger_config.go
+++ b/os/glog/glog_logger_config.go
@@ -102,7 +102,7 @@ func (l *Logger) SetConfig(config Config) error {
 
 // SetConfigWithMap set configurations with map for the logger.
 func (l *Logger) SetConfigWithMap(m map[string]interface{}) error {
-	if m == nil || len(m) == 0 {
+	if len(m) == 0 {
 		return gerror.NewCode(gcode.CodeInvalidParameter, "configuration cannot be empty")
 	}
 	// The m now is a shallow copy of m.
diff --git a/os/gmlock/gmlock_z_unit_test.go b/os/gmlock/gmlock_z_unit_test.go
index 9d2a0871442..ae7aaf94c07 100644
--- a/os/gmlock/gmlock_z_unit_test.go
+++ b/os/gmlock/gmlock_z_unit_test.go
@@ -160,7 +160,7 @@ func Test_Locker_TryLockFunc(t *testing.T) {
 
 func Test_Multiple_Goroutine(t *testing.T) {
 	gtest.C(t, func(t *gtest.T) {
-		ch := make(chan struct{}, 0)
+		ch := make(chan struct{})
 		num := 1000
 		wait := sync.WaitGroup{}
 		wait.Add(num)
@@ -178,7 +178,7 @@ func Test_Multiple_Goroutine(t *testing.T) {
 	})
 
 	gtest.C(t, func(t *gtest.T) {
-		ch := make(chan struct{}, 0)
+		ch := make(chan struct{})
 		num := 100
 		wait := sync.WaitGroup{}
 		wait.Add(num * 2)
diff --git a/os/gview/gview_config.go b/os/gview/gview_config.go
index 447f75f9e41..cff9e49d5a0 100644
--- a/os/gview/gview_config.go
+++ b/os/gview/gview_config.go
@@ -75,7 +75,7 @@ func (view *View) SetConfig(config Config) error {
 
 // SetConfigWithMap set configurations with map for the view.
 func (view *View) SetConfigWithMap(m map[string]interface{}) error {
-	if m == nil || len(m) == 0 {
+	if len(m) == 0 {
 		return gerror.NewCode(gcode.CodeInvalidParameter, "configuration cannot be empty")
 	}
 	// The m now is a shallow copy of m.
diff --git a/text/gregex/gregex_z_unit_test.go b/text/gregex/gregex_z_unit_test.go
index ca07f84079e..8de86509bf6 100644
--- a/text/gregex/gregex_z_unit_test.go
+++ b/text/gregex/gregex_z_unit_test.go
@@ -200,7 +200,7 @@ func Test_ReplaceFun(t *testing.T) {
 		wanted := "acbb[x" + wantSubs + "y]dd"
 		wanted = "acbb" + "3个a" + "dd"
 		replacedStr, err := gregex.ReplaceFunc(re, []byte(s), func(s []byte) []byte {
-			if strings.Index(string(s), "aaa") >= 0 {
+			if strings.Contains(string(s), "aaa") {
 				return []byte("3个a")
 			}
 			return []byte("[x" + string(s) + "y]")
@@ -258,7 +258,7 @@ func Test_ReplaceStringFunc(t *testing.T) {
 		wanted := "acbb[x" + wantSubs + "y]dd"
 		wanted = "acbb" + "3个a" + "dd"
 		replacedStr, err := gregex.ReplaceStringFunc(re, s, func(s string) string {
-			if strings.Index(s, "aaa") >= 0 {
+			if strings.Contains(s, "aaa") {
 				return "3个a"
 			}
 			return "[x" + s + "y]"
diff --git a/util/gconv/gconv_map.go b/util/gconv/gconv_map.go
index 89bf8fc0fb5..d51583350bd 100644
--- a/util/gconv/gconv_map.go
+++ b/util/gconv/gconv_map.go
@@ -231,7 +231,7 @@ type doMapConvertForMapOrStructValueInput struct {
 }
 
 func doMapConvertForMapOrStructValue(in doMapConvertForMapOrStructValueInput) interface{} {
-	if in.IsRoot == false && in.RecursiveOption == false {
+	if !in.IsRoot && !in.RecursiveOption {
 		return in.Value
 	}
 
diff --git a/util/gconv/gconv_z_unit_all_test.go b/util/gconv/gconv_z_unit_all_test.go
index d0faa401b83..d6bc83e0ff4 100644
--- a/util/gconv/gconv_z_unit_all_test.go
+++ b/util/gconv/gconv_z_unit_all_test.go
@@ -590,11 +590,9 @@ func Test_String_All(t *testing.T) {
 		t.AssertEQ(gconv.String(boolStruct{}), "{}")
 		t.AssertEQ(gconv.String(&boolStruct{}), "{}")
 
-		var info iString
-		info = new(S)
+		var info = new(S)
 		t.AssertEQ(gconv.String(info), "22222")
-		var errInfo iError
-		errInfo = new(S1)
+		var errInfo = new(S1)
 		t.AssertEQ(gconv.String(errInfo), "22222")
 	})
 }