github.com/songzhibin97/gkit@v1.2.13/structure/skipset/oparry_test.go (about)

     1  // Copyright 2021 ByteDance Inc.
     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 skipset
    16  
    17  import (
    18  	"github.com/songzhibin97/gkit/sys/fastrand"
    19  	"testing"
    20  	"unsafe"
    21  )
    22  
    23  type dummy struct {
    24  	data optionalArray
    25  }
    26  
    27  func TestOpArray(t *testing.T) {
    28  	n := new(dummy)
    29  	n.data.extra = new([op2]unsafe.Pointer)
    30  
    31  	var array [maxLevel]unsafe.Pointer
    32  	for i := 0; i < maxLevel; i++ {
    33  		value := unsafe.Pointer(&dummy{})
    34  		array[i] = value
    35  		n.data.store(i, value)
    36  	}
    37  
    38  	for i := 0; i < maxLevel; i++ {
    39  		if array[i] != n.data.load(i) || array[i] != n.data.atomicLoad(i) {
    40  			t.Fatal(i, array[i], n.data.load(i))
    41  		}
    42  	}
    43  
    44  	for i := 0; i < 1000; i++ {
    45  		r := int(fastrand.Uint32n(maxLevel))
    46  		value := unsafe.Pointer(&dummy{})
    47  		if i%100 == 0 {
    48  			value = nil
    49  		}
    50  		array[r] = value
    51  		if fastrand.Uint32n(2) == 0 {
    52  			n.data.store(r, value)
    53  		} else {
    54  			n.data.atomicStore(r, value)
    55  		}
    56  	}
    57  
    58  	for i := 0; i < maxLevel; i++ {
    59  		if array[i] != n.data.load(i) || array[i] != n.data.atomicLoad(i) {
    60  			t.Fatal(i, array[i], n.data.load(i))
    61  		}
    62  	}
    63  }