diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index aaa6fca..e91bb89 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -17,6 +17,6 @@ jobs:
         with:
           go-version: "1.16"
       - name: Run coverage
-        run: go test -race -coverprofile=coverage.txt -covermode=atomic
+        run: go test -v ./... -race -coverprofile=coverage.txt -covermode=atomic
       - name: Upload coverage to Codecov
         run: bash <(curl -s https://codecov.io/bash)
diff --git a/.gitignore b/.gitignore
index 1e71714..e0921c7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
 .idea/*
 .vscode/*
-.DS_Store
\ No newline at end of file
+.DS_Store
+cryptor/*.txt
+fileutil/*.txt
+cryptor/*.pem
\ No newline at end of file
diff --git a/fileutil/file_test.go b/fileutil/file_test.go
index e7f2bb1..7941434 100644
--- a/fileutil/file_test.go
+++ b/fileutil/file_test.go
@@ -87,11 +87,11 @@ func TestCopyFile(t *testing.T) {
 }
 
 func TestListFileNames(t *testing.T) {
-	filesInCurrentPath, err := ListFileNames("./")
+	filesInCurrentPath, err := ListFileNames("../datetime/")
 	if err != nil {
 		t.FailNow()
 	}
-	expected := []string{"file.go", "file_test.go"}
+	expected := []string{"datetime.go", "datetime_test.go"}
 	if !reflect.DeepEqual(filesInCurrentPath, expected) {
 		utils.LogFailedTestInfo(t, "ToChar", "./", expected, filesInCurrentPath)
 		t.FailNow()
diff --git a/validator/validator.go b/validator/validator.go
index 2f2e13b..c8b1da2 100644
--- a/validator/validator.go
+++ b/validator/validator.go
@@ -26,11 +26,7 @@ func IsNumberStr(s string) bool {
 // IsFloatStr check if the string can convert to a float.
 func IsFloatStr(s string) bool {
 	_, e := strconv.ParseFloat(s, 64)
-
-	if e != nil {
-		return false
-	}
-	return true
+	return e == nil
 }
 
 // IsIntStr check if the string can convert to a integer.
@@ -42,10 +38,7 @@ func IsIntStr(s string) bool {
 // IsIp check if the string is a ip address.
 func IsIp(ipstr string) bool {
 	ip := net.ParseIP(ipstr)
-	if ip == nil {
-		return false
-	}
-	return true
+	return ip != nil
 }
 
 // IsIpV4 check if the string is a ipv4 address.
diff --git a/validator/validator_test.go b/validator/validator_test.go
index cfbd896..cb9ea7d 100644
--- a/validator/validator_test.go
+++ b/validator/validator_test.go
@@ -190,7 +190,7 @@ func isCreditCard(t *testing.T, source string, expected bool) {
 }
 
 func TestIsBase64(t *testing.T) {
-	isBase64(t, "aGVsbG8", true)
+	isBase64(t, "aGVsbG8=", true)
 	isBase64(t, "123456", false)
 }