gvisor.dev/gvisor@v0.0.0-20240520182842-f9d4d51c7e0f/pkg/atomicbitops/aligned_test.go (about)

     1  // Copyright 2021 The gVisor Authors.
     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 atomicbitops
    16  
    17  import (
    18  	"testing"
    19  	"unsafe"
    20  )
    21  
    22  func TestAtomiciInt64(t *testing.T) {
    23  	v := struct {
    24  		v8  int8
    25  		v64 Int64
    26  	}{}
    27  	v.v64.Add(1)
    28  }
    29  
    30  func TestAtomicUint64(t *testing.T) {
    31  	v := struct {
    32  		v8  uint8
    33  		v64 Uint64
    34  	}{}
    35  	v.v64.Add(1)
    36  }
    37  
    38  func TestSize(t *testing.T) {
    39  	if size := unsafe.Sizeof(Int32{}); size != 4 {
    40  		t.Errorf("Int32 should be 4 bytes in size, but is %d bytes", size)
    41  	}
    42  	if size := unsafe.Sizeof(Uint32{}); size != 4 {
    43  		t.Errorf("Uint32 should be 4 bytes in size, but is %d bytes", size)
    44  	}
    45  	if size := unsafe.Sizeof(Int64{}); size != 8 {
    46  		t.Errorf("Int32 should be 8 bytes in size, but is %d bytes", size)
    47  	}
    48  	if size := unsafe.Sizeof(Uint64{}); size != 8 {
    49  		t.Errorf("Int32 should be 8 bytes in size, but is %d bytes", size)
    50  	}
    51  }