github.com/matrixorigin/matrixone@v1.2.0/pkg/frontend/plan_cache_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 frontend
    16  
    17  import (
    18  	"testing"
    19  
    20  	"github.com/stretchr/testify/require"
    21  )
    22  
    23  func Test_BasicGet(t *testing.T) {
    24  	pc := newPlanCache(5)
    25  
    26  	pc.cache("abc", nil, nil)
    27  	require.True(t, pc.isCached("abc"))
    28  	require.Equal(t, pc.get("abc").sql, "abc")
    29  
    30  	pc.cache("abcd", nil, nil)
    31  	require.True(t, pc.isCached("abcd"))
    32  	require.Equal(t, pc.get("abcd").sql, "abcd")
    33  
    34  	require.False(t, pc.isCached("abcde"))
    35  }
    36  
    37  func Test_LRU(t *testing.T) {
    38  	pc := newPlanCache(3)
    39  
    40  	pc.cache("1", nil, nil)
    41  	pc.cache("2", nil, nil)
    42  	pc.cache("3", nil, nil)
    43  	require.True(t, pc.isCached("1"))
    44  	require.True(t, pc.isCached("2"))
    45  	require.True(t, pc.isCached("3"))
    46  
    47  	pc.cache("4", nil, nil)
    48  	require.True(t, pc.isCached("4"))
    49  	require.False(t, pc.isCached("1"))
    50  
    51  	require.Equal(t, pc.get("2").sql, "2")
    52  	pc.cache("5", nil, nil)
    53  	require.True(t, pc.isCached("5"))
    54  	require.True(t, pc.isCached("4"))
    55  	require.True(t, pc.isCached("2"))
    56  	require.False(t, pc.isCached("3"))
    57  }
    58  
    59  func Test_CleanCache(t *testing.T) {
    60  	pc := newPlanCache(3)
    61  
    62  	pc.cache("1", nil, nil)
    63  	pc.cache("2", nil, nil)
    64  	pc.cache("3", nil, nil)
    65  	pc.cache("4", nil, nil)
    66  	require.False(t, pc.isCached("1"))
    67  	require.True(t, pc.isCached("2"))
    68  	require.True(t, pc.isCached("3"))
    69  	require.True(t, pc.isCached("4"))
    70  
    71  	pc.clean()
    72  
    73  	require.Nil(t, pc.get("1"))
    74  	require.Nil(t, pc.get("2"))
    75  	require.Nil(t, pc.get("3"))
    76  	require.Nil(t, pc.get("4"))
    77  	require.False(t, pc.isCached("1"))
    78  	require.False(t, pc.isCached("2"))
    79  	require.False(t, pc.isCached("3"))
    80  	require.False(t, pc.isCached("3"))
    81  
    82  	pc.cache("1", nil, nil)
    83  	pc.cache("2", nil, nil)
    84  	pc.cache("3", nil, nil)
    85  	pc.cache("4", nil, nil)
    86  	require.False(t, pc.isCached("1"))
    87  	require.True(t, pc.isCached("2"))
    88  	require.True(t, pc.isCached("3"))
    89  	require.True(t, pc.isCached("4"))
    90  	require.Nil(t, pc.get("1"))
    91  	require.NotNil(t, pc.get("2"))
    92  	require.NotNil(t, pc.get("3"))
    93  	require.NotNil(t, pc.get("4"))
    94  }