github.com/SagerNet/gvisor@v0.0.0-20210707092255-7731c139d75c/pkg/sentry/hostcpu/hostcpu_test.go (about)

     1  // Copyright 2018 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 hostcpu
    16  
    17  import (
    18  	"fmt"
    19  	"testing"
    20  )
    21  
    22  func TestMaxValueInLinuxBitmap(t *testing.T) {
    23  	for _, test := range []struct {
    24  		str string
    25  		max uint64
    26  	}{
    27  		{"0", 0},
    28  		{"0\n", 0},
    29  		{"0,2", 2},
    30  		{"0-63", 63},
    31  		{"0-3,8-11", 11},
    32  	} {
    33  		t.Run(fmt.Sprintf("%q", test.str), func(t *testing.T) {
    34  			max, err := maxValueInLinuxBitmap(test.str)
    35  			if err != nil || max != test.max {
    36  				t.Errorf("maxValueInLinuxBitmap: got (%d, %v), wanted (%d, nil)", max, err, test.max)
    37  			}
    38  		})
    39  	}
    40  }
    41  
    42  func TestMaxValueInLinuxBitmapErrors(t *testing.T) {
    43  	for _, str := range []string{"", "\n"} {
    44  		t.Run(fmt.Sprintf("%q", str), func(t *testing.T) {
    45  			max, err := maxValueInLinuxBitmap(str)
    46  			if err == nil {
    47  				t.Errorf("maxValueInLinuxBitmap: got (%d, nil), wanted (_, error)", max)
    48  			}
    49  			t.Log(err)
    50  		})
    51  	}
    52  }