github.com/containers/libpod@v1.9.4-0.20220419124438-4284fd425507/cmd/podman/shared/funcs_linux_test.go (about)

     1  package shared
     2  
     3  import (
     4  	"fmt"
     5  	"io/ioutil"
     6  	"os"
     7  	"path/filepath"
     8  	"strings"
     9  	"testing"
    10  
    11  	"github.com/stretchr/testify/assert"
    12  )
    13  
    14  func TestGenerateCommand(t *testing.T) {
    15  	inputCommand := "docker run -it --name NAME -e NAME=NAME -e IMAGE=IMAGE IMAGE echo \"hello world\""
    16  	correctCommand := "/proc/self/exe run -it --name bar -e NAME=bar -e IMAGE=foo foo echo hello world"
    17  	newCommand, err := GenerateCommand(inputCommand, "foo", "bar", "")
    18  	assert.Nil(t, err)
    19  	assert.Equal(t, "hello world", newCommand[11])
    20  	assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
    21  }
    22  
    23  func TestGenerateCommandCheckSubstitution(t *testing.T) {
    24  	type subsTest struct {
    25  		input      string
    26  		expected   string
    27  		shouldFail bool
    28  	}
    29  
    30  	absTmpFile, err := ioutil.TempFile("", "podmanRunlabelTestAbsolutePath")
    31  	assert.Nil(t, err, "error creating tempfile")
    32  	defer os.Remove(absTmpFile.Name())
    33  
    34  	relTmpFile, err := ioutil.TempFile("./", "podmanRunlabelTestRelativePath")
    35  	assert.Nil(t, err, "error creating tempfile")
    36  	defer os.Remove(relTmpFile.Name())
    37  	relTmpCmd, err := filepath.Abs(relTmpFile.Name())
    38  	assert.Nil(t, err, "error getting absolute path for relative tmpfile")
    39  
    40  	// this has a (low) potential of race conditions but no other way
    41  	removedTmpFile, err := ioutil.TempFile("", "podmanRunlabelTestRemove")
    42  	assert.Nil(t, err, "error creating tempfile")
    43  	os.Remove(removedTmpFile.Name())
    44  
    45  	absTmpCmd := fmt.Sprintf("%s --flag1 --flag2 --args=foo", absTmpFile.Name())
    46  	tests := []subsTest{
    47  		{
    48  			input:      "docker run -it alpine:latest",
    49  			expected:   "/proc/self/exe run -it alpine:latest",
    50  			shouldFail: false,
    51  		},
    52  		{
    53  			input:      "podman run -it alpine:latest",
    54  			expected:   "/proc/self/exe run -it alpine:latest",
    55  			shouldFail: false,
    56  		},
    57  		{
    58  			input:      absTmpCmd,
    59  			expected:   absTmpCmd,
    60  			shouldFail: false,
    61  		},
    62  		{
    63  			input:      "./" + relTmpFile.Name(),
    64  			expected:   relTmpCmd,
    65  			shouldFail: false,
    66  		},
    67  		{
    68  			input:      "ls -la",
    69  			expected:   "ls -la",
    70  			shouldFail: false,
    71  		},
    72  		{
    73  			input:      removedTmpFile.Name(),
    74  			expected:   "",
    75  			shouldFail: true,
    76  		},
    77  	}
    78  
    79  	for _, test := range tests {
    80  		newCommand, err := GenerateCommand(test.input, "foo", "bar", "")
    81  		if test.shouldFail {
    82  			assert.NotNil(t, err)
    83  		} else {
    84  			assert.Nil(t, err)
    85  		}
    86  		assert.Equal(t, test.expected, strings.Join(newCommand, " "))
    87  	}
    88  }
    89  
    90  func TestGenerateCommandPath(t *testing.T) {
    91  	inputCommand := "docker run -it --name NAME -e NAME=NAME -e IMAGE=IMAGE IMAGE echo install"
    92  	correctCommand := "/proc/self/exe run -it --name bar -e NAME=bar -e IMAGE=foo foo echo install"
    93  	newCommand, _ := GenerateCommand(inputCommand, "foo", "bar", "")
    94  	assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
    95  }
    96  
    97  func TestGenerateCommandNoSetName(t *testing.T) {
    98  	inputCommand := "docker run -it --name NAME -e NAME=NAME -e IMAGE=IMAGE IMAGE echo install"
    99  	correctCommand := "/proc/self/exe run -it --name foo -e NAME=foo -e IMAGE=foo foo echo install"
   100  	newCommand, err := GenerateCommand(inputCommand, "foo", "", "")
   101  	assert.Nil(t, err)
   102  	assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
   103  }
   104  
   105  func TestGenerateCommandNoName(t *testing.T) {
   106  	inputCommand := "docker run -it -e IMAGE=IMAGE IMAGE echo install"
   107  	correctCommand := "/proc/self/exe run -it -e IMAGE=foo foo echo install"
   108  	newCommand, err := GenerateCommand(inputCommand, "foo", "", "")
   109  	assert.Nil(t, err)
   110  	assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
   111  }
   112  
   113  func TestGenerateCommandAlreadyPodman(t *testing.T) {
   114  	inputCommand := "podman run -it --name NAME -e NAME=NAME -e IMAGE=IMAGE IMAGE echo install"
   115  	correctCommand := "/proc/self/exe run -it --name bar -e NAME=bar -e IMAGE=foo foo echo install"
   116  	newCommand, err := GenerateCommand(inputCommand, "foo", "bar", "")
   117  	assert.Nil(t, err)
   118  	assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
   119  }