doc: add example for strutil new functions

strutil/string_example_test.go

@@ -2,6 +2,7 @@ package strutil
 
 import (
 	"fmt"
+	"reflect"
 )
 
 func ExampleAfter() {
@@ -449,3 +450,81 @@ func ExampleRemoveNonPrintable() {
 	// hello world
 	// 你好😄
 }
+
+func ExampleStringToBytes() {
+	result1 := StringToBytes("abc")
+	result2 := reflect.DeepEqual(result1, []byte{'a', 'b', 'c'})
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	// Output:
+	// [97 98 99]
+	// true
+}
+
+func ExampleBytesToString() {
+	bytes := []byte{'a', 'b', 'c'}
+	result := BytesToString(bytes)
+
+	fmt.Println(result)
+	// Output:
+	// abc
+}
+
+func ExampleIsBlank() {
+	result1 := IsBlank("")
+	result2 := IsBlank("\t\v\f\n")
+	result3 := IsBlank(" 中文")
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	// Output:
+	// true
+	// true
+	// false
+}
+
+func ExampleHasPrefixAny() {
+	result1 := HasPrefixAny("foo bar", []string{"fo", "xyz", "hello"})
+	result2 := HasPrefixAny("foo bar", []string{"oom", "world"})
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	// Output:
+	// true
+	// false
+}
+
+func ExampleHasSuffixAny() {
+	result1 := HasSuffixAny("foo bar", []string{"bar", "xyz", "hello"})
+	result2 := HasSuffixAny("foo bar", []string{"oom", "world"})
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	// Output:
+	// true
+	// false
+}
+
+func ExampleIndexOffset() {
+	str := "foo bar hello world"
+
+	result1 := IndexOffset(str, "o", 5)
+	result2 := IndexOffset(str, "o", 0)
+	result3 := IndexOffset(str, "d", len(str)-1)
+	result4 := IndexOffset(str, "d", len(str))
+	result5 := IndexOffset(str, "f", -1)
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	// Output:
+	// 12
+	// 1
+	// 18
+	// -1
+	// -1
+}

strutil/string_test.go

@@ -1,9 +1,10 @@
 package strutil
 
 import (
-	"github.com/duke-git/lancet/v2/internal"
 	"reflect"
 	"testing"
+
+	"github.com/duke-git/lancet/v2/internal"
 )
 
 func TestCamelCase(t *testing.T) {
@@ -350,15 +351,15 @@ func TestRemoveNonPrintable(t *testing.T) {
 	assert.Equal("你好😄", RemoveNonPrintable("你好😄"))
 }
 
-func TestString2Bytes(t *testing.T) {
-	assert := internal.NewAssert(t, "TestString2Bytes")
+func TestStringToBytes(t *testing.T) {
+	assert := internal.NewAssert(t, "TestStringToBytes")
 	str := "abc"
 	bytes := StringToBytes(str)
 	assert.Equal(reflect.DeepEqual(bytes, []byte{'a', 'b', 'c'}), true)
 }
 
-func TestBytes2String(t *testing.T) {
-	assert := internal.NewAssert(t, "TestBytes2String")
+func TestBytesToString(t *testing.T) {
+	assert := internal.NewAssert(t, "TestBytesToString")
 	bytes := []byte{'a', 'b', 'c'}
 	str := BytesToString(bytes)
 	assert.Equal(str == "abc", true)