github.com/openebs/node-disk-manager@v1.9.1-0.20230225014141-4531f06ffa1e/pkg/util/fdutil_test.go (about)

     1  /*
     2  Copyright 2018 The OpenEBS Author
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package util
    18  
    19  import (
    20  	"syscall"
    21  	"testing"
    22  
    23  	"github.com/stretchr/testify/assert"
    24  )
    25  
    26  func fdGetArray() []syscall.FdSet {
    27  	results := make([]syscall.FdSet, 0)
    28  	fd1, fd2, fd6, fd128 := syscall.FdSet{}, syscall.FdSet{}, syscall.FdSet{}, syscall.FdSet{}
    29  	fd1.Bits[0] = 1
    30  	fd2.Bits[0] = 2
    31  	fd6.Bits[0] = 6
    32  	fd128.Bits[0] = 128
    33  	results = append(results, fd1, fd2, fd6, fd128)
    34  
    35  	return results
    36  }
    37  
    38  func TestFD_SET(t *testing.T) {
    39  	tests := map[string]struct {
    40  		x        int
    41  		expected syscall.FdSet
    42  	}{
    43  		"fd set test for fd value 0": {x: 0, expected: fdGetArray()[0]},
    44  		"fd set test for fd value 1": {x: 1, expected: fdGetArray()[1]},
    45  		"fd set test for fd value 7": {x: 7, expected: fdGetArray()[3]},
    46  	}
    47  	for name, test := range tests {
    48  		t.Run(name, func(t *testing.T) {
    49  			result := &syscall.FdSet{}
    50  			FD_SET(result, test.x)
    51  			assert.Equal(t, test.expected, *result)
    52  		})
    53  	}
    54  }
    55  
    56  func TestFD_ISSET(t *testing.T) {
    57  	tests := map[string]struct {
    58  		x        int
    59  		fdset    syscall.FdSet
    60  		expected bool
    61  	}{
    62  		"set 0 and check with 2^0": {x: 0, fdset: fdGetArray()[0], expected: true},
    63  		"set 1 and check with 2^1": {x: 1, fdset: fdGetArray()[1], expected: true},
    64  		"set 7 and check with 2^7": {x: 7, fdset: fdGetArray()[3], expected: true},
    65  		"set 4 and check with 6":   {x: 4, fdset: fdGetArray()[2], expected: false},
    66  		"set 2 and check with 2":   {x: 2, fdset: fdGetArray()[1], expected: false},
    67  	}
    68  	for name, test := range tests {
    69  		t.Run(name, func(t *testing.T) {
    70  			result := FD_ISSET(&test.fdset, test.x)
    71  			assert.Equal(t, test.expected, result)
    72  		})
    73  	}
    74  }
    75  
    76  func TestFD_ZERO(t *testing.T) {
    77  	tests := map[string]struct {
    78  		x        int
    79  		expected syscall.FdSet
    80  	}{
    81  		"fd zero test for fdset value {[16]int64{1}}":   {x: 0, expected: fdGetArray()[0]},
    82  		"fd zero test for fdset value {[16]int64{2}}":   {x: 1, expected: fdGetArray()[1]},
    83  		"fd zero test for fdset value {[16]int64{128}}": {x: 7, expected: fdGetArray()[3]},
    84  	}
    85  	for name, test := range tests {
    86  		t.Run(name, func(t *testing.T) {
    87  			result := &syscall.FdSet{}
    88  			FD_ZERO(&test.expected)
    89  			assert.Equal(t, test.expected, *result)
    90  		})
    91  	}
    92  }