github.com/matrixorigin/matrixone@v0.7.0/pkg/vm/engine/tae/logtail/service/stacker_test.go (about)

     1  // Copyright 2021 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 service
    16  
    17  import (
    18  	"testing"
    19  
    20  	"github.com/stretchr/testify/require"
    21  )
    22  
    23  func TestTableStacker(t *testing.T) {
    24  	s := NewTableStacker()
    25  	require.Equal(t, 0, len(s.ListTable()))
    26  
    27  	table := mockTable(1, 2, 3)
    28  	id := TableID(table.String())
    29  
    30  	/* ---- 1. register table ---- */
    31  	s.Register(id, table)
    32  	// only one table
    33  	require.Equal(t, 1, len(s.ListTable()))
    34  
    35  	/* ---- 2. register table repeatedly ---- */
    36  	s.Register(id, table)
    37  	// there's only one table subcribed
    38  	require.Equal(t, 1, len(s.ListTable()))
    39  
    40  	/* ---- 3. unregister table ---- */
    41  	s.Unregister(id)
    42  	// there should be still one table subscribed
    43  	require.Equal(t, 1, len(s.ListTable()))
    44  
    45  	/* ---- 4. unregister table again ---- */
    46  	s.Unregister(id)
    47  	// there should be no table subscribed
    48  	require.Equal(t, 0, len(s.ListTable()))
    49  }
    50  
    51  func TestTableInfo(t *testing.T) {
    52  	table := mockTable(1, 2, 3)
    53  	id := TableID(table.String())
    54  
    55  	info := newTableInfo(id, table)
    56  
    57  	cases := []struct {
    58  		op     func() int32
    59  		expect int32
    60  	}{
    61  		{
    62  			op:     info.Ref,
    63  			expect: 1,
    64  		},
    65  		{
    66  			op:     info.Ref,
    67  			expect: 2,
    68  		},
    69  		{
    70  			op:     info.Ref,
    71  			expect: 3,
    72  		},
    73  		{
    74  			op:     info.Deref,
    75  			expect: 2,
    76  		},
    77  		{
    78  			op:     info.Deref,
    79  			expect: 1,
    80  		},
    81  		{
    82  			op:     info.Deref,
    83  			expect: 0,
    84  		},
    85  	}
    86  
    87  	for _, c := range cases {
    88  		require.Equal(t, c.op(), c.expect)
    89  	}
    90  }