github.com/matrixorigin/matrixone@v0.7.0/pkg/vectorize/subStrIndex/subStr_Index_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 substrindex
    16  
    17  import (
    18  	"testing"
    19  
    20  	"github.com/stretchr/testify/require"
    21  )
    22  
    23  func TestSubStringIndex(t *testing.T) {
    24  	cases := []struct {
    25  		name  string
    26  		bytes string
    27  		delim string
    28  		count int64
    29  		want  string
    30  	}{
    31  		{
    32  			name:  "TEST01",
    33  			bytes: "www.mysql.com",
    34  			delim: ".",
    35  			count: 0,
    36  			want:  "",
    37  		},
    38  		{
    39  			name:  "TEST02",
    40  			bytes: "www.mysql.com",
    41  			delim: ".",
    42  			count: 1,
    43  			want:  "www",
    44  		},
    45  		{
    46  			name:  "TEST03",
    47  			bytes: "www.mysql.com",
    48  			delim: ".",
    49  			count: 2,
    50  			want:  "www.mysql",
    51  		},
    52  		{
    53  			name:  "TEST04",
    54  			bytes: "www.mysql.com",
    55  			delim: ".",
    56  			count: 3,
    57  			want:  "www.mysql.com",
    58  		},
    59  		{
    60  			name:  "TEST05",
    61  			bytes: "www.mysql.com",
    62  			delim: ".",
    63  			count: -3,
    64  			want:  "www.mysql.com",
    65  		},
    66  		{
    67  			name:  "TEST06",
    68  			bytes: "www.mysql.com",
    69  			delim: ".",
    70  			count: -2,
    71  			want:  "mysql.com",
    72  		},
    73  		{
    74  			name:  "TEST07",
    75  			bytes: "www.mysql.com",
    76  			delim: ".",
    77  			count: -1,
    78  			want:  "com",
    79  		},
    80  		{
    81  			name:  "TEST08",
    82  			bytes: "xyz",
    83  			delim: "abc",
    84  			count: 223372036854775808,
    85  			want:  "xyz",
    86  		},
    87  		{
    88  			name:  "TEST09",
    89  			bytes: "aaa.bbb.ccc.ddd.eee",
    90  			delim: ".",
    91  			count: 9223372036854775807,
    92  			want:  "aaa.bbb.ccc.ddd.eee",
    93  		},
    94  		{
    95  			name:  "TEST10",
    96  			bytes: "aaa.bbb.ccc.ddd.eee",
    97  			delim: ".",
    98  			count: -9223372036854775808,
    99  			want:  "aaa.bbb.ccc.ddd.eee",
   100  		},
   101  		{
   102  			name:  "TEST11",
   103  			bytes: "aaa.bbb.ccc.ddd.eee",
   104  			delim: ".",
   105  			count: int64(922337203685477580),
   106  			want:  "aaa.bbb.ccc.ddd.eee",
   107  		},
   108  	}
   109  
   110  	for _, c := range cases {
   111  		t.Run(c.name, func(t *testing.T) {
   112  			got, _ := subStrIndex(c.bytes, c.delim, c.count)
   113  			require.Equal(t, c.want, got)
   114  		})
   115  	}
   116  }