github.com/soypat/rebed@v0.2.3/rebed_test.go (about)

     1  package rebed
     2  
     3  import (
     4  	"embed"
     5  	"fmt"
     6  	"io/fs"
     7  	"os"
     8  	"path/filepath"
     9  	"testing"
    10  )
    11  
    12  // defer os.Chdir(strings.Repeat("../", len(filepath.SplitList(testDir))))
    13  
    14  //go:embed testFS/*
    15  var testFS embed.FS
    16  
    17  // this is where filesystems are created
    18  const testDir = "testdata/testdir"
    19  
    20  func setup(path string, t *testing.T) {
    21  	os.RemoveAll(path)
    22  	os.MkdirAll(path, 0777)
    23  }
    24  func TestTree(t *testing.T) {
    25  	tDir := filepath.Join(testDir, t.Name())
    26  	setup(tDir, t)
    27  	defer os.RemoveAll(tDir)
    28  	err := Tree(testFS, tDir)
    29  	if err != nil {
    30  		t.Error(err)
    31  	}
    32  	// We search our embedded directories and check if our created filesystem has the entries
    33  	err = Walk(testFS, ".", func(path string, de fs.DirEntry) error {
    34  		pathToCreated := filepath.Join(path, de.Name())
    35  		if de.IsDir() {
    36  			info, err := os.Stat(pathToCreated)
    37  			if os.IsNotExist(err) {
    38  				t.Errorf("folder %q not found", pathToCreated)
    39  			}
    40  			if !info.IsDir() {
    41  				t.Errorf("expected a folder %q, got file", pathToCreated)
    42  			}
    43  			if err != nil {
    44  				t.Error(err)
    45  			}
    46  		}
    47  		return nil
    48  	})
    49  	if err != nil {
    50  		t.Error(err)
    51  	}
    52  }
    53  
    54  func TestTouch(t *testing.T) {
    55  	testFileCreation(Touch, t)
    56  }
    57  
    58  func TestWrite(t *testing.T) {
    59  	testFileCreation(Write, t)
    60  }
    61  
    62  func TestPatch(t *testing.T) {
    63  	testFileCreation(Patch, t)
    64  }
    65  
    66  func TestCreate(t *testing.T) {
    67  	testFileCreation(Create, t)
    68  }
    69  
    70  func TestCreateError(t *testing.T) {
    71  	tDir := filepath.Join(testDir, t.Name())
    72  	setup(tDir, t)
    73  	defer os.RemoveAll(tDir)
    74  	err := Create(testFS, tDir)
    75  	if err != nil {
    76  		t.Errorf("Create failed with new directory %s", err)
    77  	}
    78  	err = Create(testFS, tDir)
    79  	if err == nil || !os.IsExist(err) {
    80  		t.Errorf("Create should have failed during conflicting filesystem creation: %s", err)
    81  	}
    82  }
    83  
    84  func TestWalkError(t *testing.T) {
    85  	theError := fmt.Errorf("oops")
    86  	err := Walk(testFS, ".", func(path string, de fs.DirEntry) error {
    87  		return theError
    88  	})
    89  	if err != theError {
    90  		t.Errorf("Expected specific error, got %s", err)
    91  	}
    92  }
    93  
    94  func TestWalkDirError(t *testing.T) {
    95  	err := Walk(testFS, "nonexistent", func(path string, de fs.DirEntry) error {
    96  		return nil
    97  	})
    98  	if err == nil {
    99  		t.Errorf("expected error while walking non-existent directory")
   100  	}
   101  }
   102  
   103  func testFileCreation(rebedder func(embed.FS, string) error, t *testing.T) {
   104  	tDir := filepath.Join(testDir, t.Name())
   105  	setup(tDir, t)
   106  	defer os.RemoveAll(tDir)
   107  	err := rebedder(testFS, tDir)
   108  	if err != nil {
   109  		t.Error(err)
   110  	}
   111  	err = Walk(testFS, ".", func(path string, de fs.DirEntry) error {
   112  		pathToCreated := filepath.Join(path, de.Name())
   113  		info, err := os.Stat(pathToCreated)
   114  		if err != nil {
   115  			return err
   116  		}
   117  		if de.IsDir() != info.IsDir() {
   118  			t.Errorf("expected folder/file got file/folder %q", pathToCreated)
   119  		}
   120  		return nil
   121  	})
   122  	if err != nil {
   123  		t.Error(err)
   124  	}
   125  }
   126  
   127  func TestEmbedCopyErrors(t *testing.T) {
   128  	err := embedCopyToFile(testFS, "nonexistent/File/path", "outputPath")
   129  	if err == nil {
   130  		t.Error("file should not have existed!")
   131  	}
   132  	err = embedCopyToFile(testFS, "testFS/file", "nonexistentfolder/file")
   133  	if err == nil {
   134  		t.Error("copying to a nonexistent folder should error")
   135  	}
   136  }