github.com/matrixorigin/matrixone@v0.7.0/pkg/vectorize/ltrim/ltrim_test.go (about)

     1  // Copyright 2022 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package ltrim
    16  
    17  import (
    18  	"strings"
    19  	"testing"
    20  
    21  	"github.com/stretchr/testify/require"
    22  )
    23  
    24  func TestLtrim(t *testing.T) {
    25  	multiStrings := []string{
    26  		"",
    27  		" ",
    28  		"  ",
    29  		"   ",
    30  		" a",
    31  		" a ",
    32  		" a  ",
    33  		"  a ",
    34  		" 你好 ",
    35  		"　a", // fullwidth space
    36  	}
    37  	rs := make([]string, len(multiStrings))
    38  	Ltrim(multiStrings, rs)
    39  	for i, s := range multiStrings {
    40  		// TrimLeft of only space " " char.
    41  		// require.Equal(t, rs[i], strings.TrimLeft(s, " \u3000"))
    42  		require.Equal(t, rs[i], strings.TrimLeft(s, " "))
    43  	}
    44  }