github.com/demonoid81/moby@v0.0.0-20200517203328-62dd8e17c460/testutil/fakegit/fakegit.go (about)

     1  package fakegit // import "github.com/demonoid81/moby/testutil/fakegit"
     2  
     3  import (
     4  	"fmt"
     5  	"io/ioutil"
     6  	"net/http"
     7  	"net/http/httptest"
     8  	"os"
     9  	"os/exec"
    10  	"path/filepath"
    11  	"testing"
    12  
    13  	"github.com/demonoid81/moby/testutil/fakecontext"
    14  	"github.com/demonoid81/moby/testutil/fakestorage"
    15  )
    16  
    17  type gitServer interface {
    18  	URL() string
    19  	Close() error
    20  }
    21  
    22  type localGitServer struct {
    23  	*httptest.Server
    24  }
    25  
    26  func (r *localGitServer) Close() error {
    27  	r.Server.Close()
    28  	return nil
    29  }
    30  
    31  func (r *localGitServer) URL() string {
    32  	return r.Server.URL
    33  }
    34  
    35  // FakeGit is a fake git server
    36  type FakeGit struct {
    37  	root    string
    38  	server  gitServer
    39  	RepoURL string
    40  }
    41  
    42  // Close closes the server, implements Closer interface
    43  func (g *FakeGit) Close() {
    44  	g.server.Close()
    45  	os.RemoveAll(g.root)
    46  }
    47  
    48  // New create a fake git server that can be used for git related tests
    49  func New(c testing.TB, name string, files map[string]string, enforceLocalServer bool) *FakeGit {
    50  	c.Helper()
    51  	ctx := fakecontext.New(c, "", fakecontext.WithFiles(files))
    52  	defer ctx.Close()
    53  	curdir, err := os.Getwd()
    54  	if err != nil {
    55  		c.Fatal(err)
    56  	}
    57  	defer os.Chdir(curdir)
    58  
    59  	if output, err := exec.Command("git", "init", ctx.Dir).CombinedOutput(); err != nil {
    60  		c.Fatalf("error trying to init repo: %s (%s)", err, output)
    61  	}
    62  	err = os.Chdir(ctx.Dir)
    63  	if err != nil {
    64  		c.Fatal(err)
    65  	}
    66  	if output, err := exec.Command("git", "config", "user.name", "Fake User").CombinedOutput(); err != nil {
    67  		c.Fatalf("error trying to set 'user.name': %s (%s)", err, output)
    68  	}
    69  	if output, err := exec.Command("git", "config", "user.email", "fake.user@example.com").CombinedOutput(); err != nil {
    70  		c.Fatalf("error trying to set 'user.email': %s (%s)", err, output)
    71  	}
    72  	if output, err := exec.Command("git", "add", "*").CombinedOutput(); err != nil {
    73  		c.Fatalf("error trying to add files to repo: %s (%s)", err, output)
    74  	}
    75  	if output, err := exec.Command("git", "commit", "-a", "-m", "Initial commit").CombinedOutput(); err != nil {
    76  		c.Fatalf("error trying to commit to repo: %s (%s)", err, output)
    77  	}
    78  
    79  	root, err := ioutil.TempDir("", "docker-test-git-repo")
    80  	if err != nil {
    81  		c.Fatal(err)
    82  	}
    83  	repoPath := filepath.Join(root, name+".git")
    84  	if output, err := exec.Command("git", "clone", "--bare", ctx.Dir, repoPath).CombinedOutput(); err != nil {
    85  		os.RemoveAll(root)
    86  		c.Fatalf("error trying to clone --bare: %s (%s)", err, output)
    87  	}
    88  	err = os.Chdir(repoPath)
    89  	if err != nil {
    90  		os.RemoveAll(root)
    91  		c.Fatal(err)
    92  	}
    93  	if output, err := exec.Command("git", "update-server-info").CombinedOutput(); err != nil {
    94  		os.RemoveAll(root)
    95  		c.Fatalf("error trying to git update-server-info: %s (%s)", err, output)
    96  	}
    97  	err = os.Chdir(curdir)
    98  	if err != nil {
    99  		os.RemoveAll(root)
   100  		c.Fatal(err)
   101  	}
   102  
   103  	var server gitServer
   104  	if !enforceLocalServer {
   105  		// use fakeStorage server, which might be local or remote (at test daemon)
   106  		server = fakestorage.New(c, root)
   107  	} else {
   108  		// always start a local http server on CLI test machine
   109  		httpServer := httptest.NewServer(http.FileServer(http.Dir(root)))
   110  		server = &localGitServer{httpServer}
   111  	}
   112  	return &FakeGit{
   113  		root:    root,
   114  		server:  server,
   115  		RepoURL: fmt.Sprintf("%s/%s.git", server.URL(), name),
   116  	}
   117  }