github.com/nanvenomous/exfs@v0.0.8/filesystem_test.go (about)

     1  package exfs
     2  
     3  import (
     4  	"fmt"
     5  	"os"
     6  	"path/filepath"
     7  	"testing"
     8  
     9  	"github.com/stretchr/testify/assert"
    10  )
    11  
    12  var (
    13  	MockFilesystem *FileSystem
    14  	projectRoot    string
    15  )
    16  
    17  func teardown(t *testing.T) {
    18  	var err error
    19  	err = os.Chdir(projectRoot)
    20  	if err != nil {
    21  		panic(err)
    22  	}
    23  	err = os.RemoveAll(t.Name())
    24  	if err != nil {
    25  		panic(err)
    26  	}
    27  }
    28  
    29  func setup(t *testing.T) func(*testing.T) {
    30  	var err error
    31  
    32  	err = os.Mkdir(t.Name(), os.ModePerm)
    33  	if err != nil {
    34  		panic(err)
    35  	}
    36  
    37  	err = os.Chdir(t.Name())
    38  	if err != nil {
    39  		panic(err)
    40  	}
    41  	return teardown
    42  }
    43  
    44  func TestMain(m *testing.M) {
    45  	var err error
    46  	MockFilesystem = NewFileSystem()
    47  	projectRoot, err = os.Getwd()
    48  	if err != nil {
    49  		panic(err)
    50  	}
    51  	os.Exit(m.Run())
    52  }
    53  
    54  func TestExecute(t *testing.T) {
    55  	tdn := setup(t)
    56  	defer tdn(t)
    57  
    58  	var err error
    59  	err = MockFilesystem.Execute("git", []string{"remote"})
    60  	assert.ErrorIs(t, err, nil)
    61  	err = MockFilesystem.Execute("notACommand", []string{})
    62  	assert.ErrorContains(t, err, "notACommand")
    63  }
    64  
    65  func TestCapture(t *testing.T) {
    66  	tdn := setup(t)
    67  	defer tdn(t)
    68  
    69  	var (
    70  		err        error
    71  		errs, outs string
    72  	)
    73  	outs, errs, err = MockFilesystem.Capture("git", []string{})
    74  	assert.NotNil(t, err)
    75  	assert.Empty(t, errs)
    76  	assert.Contains(t, outs, "usage: git")
    77  
    78  	outs, errs, err = MockFilesystem.Capture("git", []string{"cow"})
    79  	assert.Contains(t, errs, "'cow' is not a git command")
    80  	assert.NotNil(t, err)
    81  }
    82  
    83  func TestEditTemporaryFile(t *testing.T) {
    84  	var (
    85  		err                error
    86  		actualEditedString string
    87  		originalTxt        = "mock original text "
    88  		formattingText     = "mock extra text"
    89  		mockEditorEnvVal   = "mockEditorEnvVal"
    90  	)
    91  	// os.Setenv(EDITOR_ENV_VAR, mockEditorEnvVal)
    92  	actualExecute := execute
    93  
    94  	// mock adding text to end of file
    95  	execute = func(command string, args []string) error {
    96  		var (
    97  			err error
    98  			f   *os.File
    99  		)
   100  
   101  		assert.Equal(t, mockEditorEnvVal, command)
   102  
   103  		f, err = os.OpenFile(args[0],
   104  			os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
   105  		if err != nil {
   106  			return err
   107  		}
   108  		defer f.Close()
   109  		_, err = f.WriteString(formattingText)
   110  		return err
   111  	}
   112  	defer func() { execute = actualExecute }()
   113  
   114  	actualEditedString, err = MockFilesystem.EditTemporaryFile(mockEditorEnvVal, "tmpFile.txt", originalTxt)
   115  	assert.Nil(t, err)
   116  	assert.Equal(t, fmt.Sprintf("%s%s", originalTxt, formattingText), actualEditedString)
   117  }
   118  
   119  func TestFindFileInAboveCurDir(t *testing.T) {
   120  	tdn := setup(t)
   121  	defer tdn(t)
   122  
   123  	var (
   124  		err     error
   125  		fullPth string
   126  		fl      *os.File
   127  	)
   128  	const (
   129  		mockFileName = "fl.txt"
   130  		mockDir      = "mockDir"
   131  	)
   132  
   133  	// Fails to find file
   134  	fullPth, err = MockFilesystem.FindFileInAboveCurDir(mockFileName)
   135  	assert.ErrorContains(t, err, "did not find file")
   136  	assert.Equal(t, fullPth, "")
   137  
   138  	// Finds file in curr dir
   139  	fl, err = os.Create(mockFileName)
   140  	assert.Nil(t, err)
   141  	assert.Nil(t, fl.Close())
   142  	fullPth, err = MockFilesystem.FindFileInAboveCurDir(mockFileName)
   143  	assert.Nil(t, err)
   144  	assert.Contains(t, fullPth, filepath.Join(t.Name(), mockFileName))
   145  
   146  	// Finds file above cur directory
   147  	assert.Nil(t, os.Mkdir(mockDir, os.ModePerm))
   148  	assert.Nil(t, os.Chdir(mockDir))
   149  	fullPth, err = MockFilesystem.FindFileInAboveCurDir(mockFileName)
   150  	assert.Nil(t, err)
   151  	assert.Contains(t, fullPth, filepath.Join(t.Name(), mockFileName))
   152  }