github.com/docker/docker@v299999999.0.0-20200612211812-aaf470eca7b5+incompatible/builder/remotecontext/detect_test.go (about)

     1  package remotecontext // import "github.com/docker/docker/builder/remotecontext"
     2  
     3  import (
     4  	"errors"
     5  	"io/ioutil"
     6  	"log"
     7  	"os"
     8  	"sort"
     9  	"testing"
    10  
    11  	"github.com/docker/docker/builder"
    12  	"github.com/docker/docker/pkg/containerfs"
    13  )
    14  
    15  const (
    16  	dockerfileContents   = "FROM busybox"
    17  	dockerignoreFilename = ".dockerignore"
    18  	testfileContents     = "test"
    19  )
    20  
    21  const shouldStayFilename = "should_stay"
    22  
    23  func extractFilenames(files []os.FileInfo) []string {
    24  	filenames := make([]string, len(files))
    25  
    26  	for i, file := range files {
    27  		filenames[i] = file.Name()
    28  	}
    29  
    30  	return filenames
    31  }
    32  
    33  func checkDirectory(t *testing.T, dir string, expectedFiles []string) {
    34  	files, err := ioutil.ReadDir(dir)
    35  
    36  	if err != nil {
    37  		t.Fatalf("Could not read directory: %s", err)
    38  	}
    39  
    40  	if len(files) != len(expectedFiles) {
    41  		log.Fatalf("Directory should contain exactly %d file(s), got %d", len(expectedFiles), len(files))
    42  	}
    43  
    44  	filenames := extractFilenames(files)
    45  	sort.Strings(filenames)
    46  	sort.Strings(expectedFiles)
    47  
    48  	for i, filename := range filenames {
    49  		if filename != expectedFiles[i] {
    50  			t.Fatalf("File %s should be in the directory, got: %s", expectedFiles[i], filename)
    51  		}
    52  	}
    53  }
    54  
    55  func executeProcess(t *testing.T, contextDir string) {
    56  	modifiableCtx := &stubRemote{root: containerfs.NewLocalContainerFS(contextDir)}
    57  
    58  	err := removeDockerfile(modifiableCtx, builder.DefaultDockerfileName)
    59  
    60  	if err != nil {
    61  		t.Fatalf("Error when executing Process: %s", err)
    62  	}
    63  }
    64  
    65  func TestProcessShouldRemoveDockerfileDockerignore(t *testing.T) {
    66  	contextDir, cleanup := createTestTempDir(t, "", "builder-dockerignore-process-test")
    67  	defer cleanup()
    68  
    69  	createTestTempFile(t, contextDir, shouldStayFilename, testfileContents, 0777)
    70  	createTestTempFile(t, contextDir, dockerignoreFilename, "Dockerfile\n.dockerignore", 0777)
    71  	createTestTempFile(t, contextDir, builder.DefaultDockerfileName, dockerfileContents, 0777)
    72  
    73  	executeProcess(t, contextDir)
    74  
    75  	checkDirectory(t, contextDir, []string{shouldStayFilename})
    76  
    77  }
    78  
    79  func TestProcessNoDockerignore(t *testing.T) {
    80  	contextDir, cleanup := createTestTempDir(t, "", "builder-dockerignore-process-test")
    81  	defer cleanup()
    82  
    83  	createTestTempFile(t, contextDir, shouldStayFilename, testfileContents, 0777)
    84  	createTestTempFile(t, contextDir, builder.DefaultDockerfileName, dockerfileContents, 0777)
    85  
    86  	executeProcess(t, contextDir)
    87  
    88  	checkDirectory(t, contextDir, []string{shouldStayFilename, builder.DefaultDockerfileName})
    89  
    90  }
    91  
    92  func TestProcessShouldLeaveAllFiles(t *testing.T) {
    93  	contextDir, cleanup := createTestTempDir(t, "", "builder-dockerignore-process-test")
    94  	defer cleanup()
    95  
    96  	createTestTempFile(t, contextDir, shouldStayFilename, testfileContents, 0777)
    97  	createTestTempFile(t, contextDir, builder.DefaultDockerfileName, dockerfileContents, 0777)
    98  	createTestTempFile(t, contextDir, dockerignoreFilename, "input1\ninput2", 0777)
    99  
   100  	executeProcess(t, contextDir)
   101  
   102  	checkDirectory(t, contextDir, []string{shouldStayFilename, builder.DefaultDockerfileName, dockerignoreFilename})
   103  
   104  }
   105  
   106  // TODO: remove after moving to a separate pkg
   107  type stubRemote struct {
   108  	root containerfs.ContainerFS
   109  }
   110  
   111  func (r *stubRemote) Hash(path string) (string, error) {
   112  	return "", errors.New("not implemented")
   113  }
   114  
   115  func (r *stubRemote) Root() containerfs.ContainerFS {
   116  	return r.root
   117  }
   118  func (r *stubRemote) Close() error {
   119  	return errors.New("not implemented")
   120  }
   121  func (r *stubRemote) Remove(p string) error {
   122  	return r.root.Remove(r.root.Join(r.root.Path(), p))
   123  }