Merge pull request #174 from goreleaser/tests

Increasing test coverage

.travis.yml

@@ -1,11 +1,13 @@
 language: go
 go: 1.8
-install: make setup
+install:
+  - make setup
+  - gem install fpm
 script:
   - make test
 after_success:
   - go get github.com/mattn/goveralls
   - goveralls -coverprofile=coverage.out -service=travis-ci -repotoken="$COVERALLS_TOKEN"
-  - test -n "$TRAVIS_TAG" && gem install fpm && go run main.go
+  - test -n "$TRAVIS_TAG" && go run main.go
 notifications:
   email: false

checksum/checksum_test.go

@@ -10,7 +10,7 @@ import (
 
 func TestChecksums(t *testing.T) {
 	var assert = assert.New(t)
-	folder, err := ioutil.TempDir("", "gorelasertest")
+	folder, err := ioutil.TempDir("", "goreleasertest")
 	assert.NoError(err)
 	var file = filepath.Join(folder, "subject")
 	assert.NoError(ioutil.WriteFile(file, []byte("lorem ipsum"), 0644))

main.go

@@ -16,7 +16,6 @@ import (
 	"github.com/goreleaser/goreleaser/pipeline/fpm"
 	"github.com/goreleaser/goreleaser/pipeline/git"
 	"github.com/goreleaser/goreleaser/pipeline/release"
-	"github.com/goreleaser/goreleaser/pipeline/source"
 	"github.com/urfave/cli"
 )
 
@@ -74,9 +73,8 @@ func pipes(buildOnly bool) []pipeline.Pipe {
 	if !buildOnly {
 		pipes = append(
 			pipes,
-			git.Pipe{},    // get current tag info
+			git.Pipe{}, // get and validate git repo state
 			env.Pipe{}, // load and validate environment variables
-			source.Pipe{}, // validate current git state
 		)
 	}
 	pipes = append(

pipeline/archive/archive_test.go

@@ -0,0 +1,58 @@
+package archive
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/goreleaser/goreleaser/config"
+	"github.com/goreleaser/goreleaser/context"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestDescription(t *testing.T) {
+	assert.NotEmpty(t, Pipe{}.Description())
+}
+
+func TestRunPipe(t *testing.T) {
+	var assert = assert.New(t)
+	folder, err := ioutil.TempDir("", "archivetest")
+	assert.NoError(err)
+	current, err := os.Getwd()
+	assert.NoError(err)
+	assert.NoError(os.Chdir(folder))
+	defer func() {
+		assert.NoError(os.Chdir(current))
+	}()
+	var dist = filepath.Join(folder, "dist")
+	assert.NoError(os.Mkdir(dist, 0755))
+	assert.NoError(os.Mkdir(filepath.Join(dist, "mybin"), 0755))
+	_, err = os.Create(filepath.Join(dist, "mybin", "mybin"))
+	assert.NoError(err)
+	readme, err := os.Create(filepath.Join(folder, "README.md"))
+	assert.NoError(err)
+	var ctx = &context.Context{
+		Archives: map[string]string{
+			"darwinamd64": "mybin",
+		},
+		Config: config.Project{
+			Dist: dist,
+			Archive: config.Archive{
+				Files: []string{
+					"README.md",
+				},
+			},
+		},
+	}
+	for _, format := range []string{"tar.gz", "zip"} {
+		t.Run("Archive format "+format, func(t *testing.T) {
+			ctx.Config.Archive.Format = format
+			assert.NoError(Pipe{}.Run(ctx))
+		})
+	}
+	t.Run("Removed README", func(t *testing.T) {
+		assert.NoError(os.Remove(readme.Name()))
+		assert.Error(Pipe{}.Run(ctx))
+	})
+}

pipeline/brew/brew_test.go

@@ -89,7 +89,7 @@ func TestFormulaeSimple(t *testing.T) {
 
 func TestRunPipe(t *testing.T) {
 	assert := assert.New(t)
-	folder, err := ioutil.TempDir("", "gorelasertest")
+	folder, err := ioutil.TempDir("", "goreleasertest")
 	assert.NoError(err)
 	_, err = os.Create(filepath.Join(folder, "bin.tar.gz"))
 	assert.NoError(err)

pipeline/build/build_test.go

@@ -40,7 +40,7 @@ func TestBuild(t *testing.T) {
 
 func TestRunFullPipe(t *testing.T) {
 	assert := assert.New(t)
-	folder, err := ioutil.TempDir("", "gorelasertest")
+	folder, err := ioutil.TempDir("", "goreleasertest")
 	assert.NoError(err)
 	var binary = filepath.Join(folder, "testing")
 	var pre = filepath.Join(folder, "pre")

pipeline/checksums/checksums_test.go

@@ -16,7 +16,7 @@ func TestDescription(t *testing.T) {
 
 func TestPipe(t *testing.T) {
 	var assert = assert.New(t)
-	folder, err := ioutil.TempDir("", "gorelasertest")
+	folder, err := ioutil.TempDir("", "goreleasertest")
 	assert.NoError(err)
 	var file = filepath.Join(folder, "binary")
 	assert.NoError(ioutil.WriteFile(file, []byte("some string"), 0644))
@@ -35,7 +35,20 @@ func TestPipe(t *testing.T) {
 
 func TestPipeFileNotExist(t *testing.T) {
 	var assert = assert.New(t)
-	folder, err := ioutil.TempDir("", "gorelasertest")
+	folder, err := ioutil.TempDir("", "goreleasertest")
+	assert.NoError(err)
+	var ctx = &context.Context{
+		Config: config.Project{
+			Dist: folder,
+		},
+	}
+	ctx.AddArtifact("nope")
+	assert.Error(Pipe{}.Run(ctx))
+}
+
+func TestPipeFileCantBeWritten(t *testing.T) {
+	var assert = assert.New(t)
+	folder, err := ioutil.TempDir("", "goreleasertest")
 	assert.NoError(err)
 	var ctx = &context.Context{
 		Config: config.Project{

pipeline/fpm/fpm_test.go

@@ -0,0 +1,73 @@
+package fpm
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/goreleaser/goreleaser/config"
+	"github.com/goreleaser/goreleaser/context"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestDescription(t *testing.T) {
+	assert.NotEmpty(t, Pipe{}.Description())
+}
+
+func TestRunPipeNoFormats(t *testing.T) {
+	var assert = assert.New(t)
+	var ctx = &context.Context{
+		Config: config.Project{},
+	}
+	assert.NoError(Pipe{}.Run(ctx))
+}
+
+func TestRunPipe(t *testing.T) {
+	var assert = assert.New(t)
+	folder, err := ioutil.TempDir("", "archivetest")
+	assert.NoError(err)
+	var dist = filepath.Join(folder, "dist")
+	assert.NoError(os.Mkdir(dist, 0755))
+	assert.NoError(os.Mkdir(filepath.Join(dist, "mybin"), 0755))
+	_, err = os.Create(filepath.Join(dist, "mybin", "mybin"))
+	assert.NoError(err)
+	var ctx = &context.Context{
+		Archives: map[string]string{
+			"linuxamd64": "mybin",
+		},
+		Config: config.Project{
+			Dist: dist,
+			Build: config.Build{
+				Goarch: []string{
+					"amd64",
+					"i386",
+				},
+				Binary: "mybin",
+			},
+			FPM: config.FPM{
+				Formats:      []string{"deb"},
+				Dependencies: []string{"make"},
+				Conflicts:    []string{"git"},
+			},
+		},
+	}
+	assert.NoError(Pipe{}.Run(ctx))
+}
+
+func TestNoFPMInPath(t *testing.T) {
+	var assert = assert.New(t)
+	var path = os.Getenv("PATH")
+	defer func() {
+		assert.NoError(os.Setenv("PATH", path))
+	}()
+	os.Setenv("PATH", "")
+	var ctx = &context.Context{
+		Config: config.Project{
+			FPM: config.FPM{
+				Formats: []string{"deb"},
+			},
+		},
+	}
+	assert.EqualError(Pipe{}.Run(ctx), ErrNoFPM.Error())
+}

pipeline/git/commit.go

@@ -1,21 +0,0 @@
-package git
-
-import (
-	"errors"
-	"os/exec"
-	"strings"
-)
-
-func commitHash() (string, error) {
-	cmd := exec.Command(
-		"git",
-		"show",
-		"--format='%H'",
-		"HEAD",
-	)
-	bts, err := cmd.CombinedOutput()
-	if err != nil {
-		return "", errors.New(err.Error() + ": " + string(bts))
-	}
-	return strings.Replace(strings.Split(string(bts), "\n")[0], "'", "", -1), err
-}

pipeline/git/commit_test.go

@@ -1,15 +0,0 @@
-package git
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestCommit(t *testing.T) {
-	assert := assert.New(t)
-	commit, err := commitHash()
-	assert.NoError(err)
-	assert.NotEmpty(commit)
-	assert.NotContains(commit, "'")
-}

pipeline/git/exec.go

@@ -0,0 +1,21 @@
+package git
+
+import (
+	"errors"
+	"os/exec"
+	"strings"
+)
+
+func git(args ...string) (output string, err error) {
+	var cmd = exec.Command("git", args...)
+	bts, err := cmd.CombinedOutput()
+	if err != nil {
+		return "", errors.New(string(bts))
+	}
+	return string(bts), err
+}
+
+func cleanGit(args ...string) (output string, err error) {
+	output, err = git(args...)
+	return strings.Replace(strings.Split(output, "\n")[0], "'", "", -1), err
+}

pipeline/git/git.go

@@ -1,5 +1,5 @@
-// Package git implements the Pipe interface extracting usefull data from
-// git and putting it in the context.
+// Package git implements the Pipe interface getting and validating the
+// current git repository state
 package git
 
 import (
@@ -18,44 +18,86 @@ func (e ErrInvalidVersionFormat) Error() string {
 	return e.version + " is not in a valid version format"
 }
 
+// ErrDirty happens when the repo has uncommitted/unstashed changes
+type ErrDirty struct {
+	status string
+}
+
+func (e ErrDirty) Error() string {
+	return "git is currently in a dirty state:\n" + e.status
+}
+
+// ErrWrongRef happens when the HEAD reference is different from the tag being built
+type ErrWrongRef struct {
+	status string
+}
+
+func (e ErrWrongRef) Error() string {
+	return e.status
+}
+
 // Pipe for brew deployment
 type Pipe struct{}
 
 // Description of the pipe
 func (Pipe) Description() string {
-	return "Getting Git info"
+	return "Getting and validating git state"
 }
 
 // Run the pipe
 func (Pipe) Run(ctx *context.Context) (err error) {
-	tag, err := currentTag()
+	tag, err := cleanGit("describe", "--tags", "--abbrev=0", "--always")
 	if err != nil {
 		return
 	}
-	previous, err := previousTag(tag)
+	prev, err := previous(tag)
 	if err != nil {
 		return
 	}
-	log, err := log(previous, tag)
+
+	log, err := git("log", "--pretty=oneline", "--abbrev-commit", prev+".."+tag)
 	if err != nil {
 		return
 	}
 
 	ctx.Git = context.GitInfo{
 		CurrentTag:  tag,
-		PreviousTag: previous,
+		PreviousTag: prev,
 		Diff:        log,
 	}
 	// removes usual `v` prefix
 	ctx.Version = strings.TrimPrefix(tag, "v")
-	matches, err := regexp.MatchString("^[0-9.]+", ctx.Version)
-	if err != nil || !matches {
-		return ErrInvalidVersionFormat{ctx.Version}
+	if versionErr := isVersionValid(ctx.Version); versionErr != nil {
+		return versionErr
 	}
-	commit, err := commitHash()
+	commit, err := cleanGit("show", "--format='%H'", "HEAD")
 	if err != nil {
 		return
 	}
 	ctx.Git.Commit = commit
+	out, err := git("diff")
+	if strings.TrimSpace(out) != "" || err != nil {
+		return ErrDirty{out}
+	}
+	_, err = cleanGit("describe", "--exact-match", "--tags", "--match", tag)
+	if err != nil {
+		return ErrWrongRef{err.Error()}
+	}
+	return nil
+}
+
+func previous(tag string) (previous string, err error) {
+	previous, err = cleanGit("describe", "--tags", "--abbrev=0", "--always", tag+"^")
+	if err != nil {
+		previous, err = cleanGit("rev-list", "--max-parents=0", "HEAD")
+	}
 	return
 }
+
+func isVersionValid(version string) error {
+	matches, err := regexp.MatchString("^[0-9.]+", version)
+	if err != nil || !matches {
+		return ErrInvalidVersionFormat{version}
+	}
+	return nil
+}

pipeline/git/git_test.go

@@ -1,6 +1,9 @@
 package git
 
 import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
 	"testing"
 
 	"github.com/goreleaser/goreleaser/config"
@@ -12,14 +15,141 @@ func TestDescription(t *testing.T) {
 	assert.NotEmpty(t, Pipe{}.Description())
 }
 
-func TestValidVersion(t *testing.T) {
-	assert := assert.New(t)
+func TestNotAGitFolder(t *testing.T) {
+	var assert = assert.New(t)
+	_, back := createAndChdir(t)
+	defer back()
+	var ctx = &context.Context{
+		Config: config.Project{},
+	}
+	assert.Error(Pipe{}.Run(ctx))
+}
 
+func TestSingleCommit(t *testing.T) {
+	var assert = assert.New(t)
+	_, back := createAndChdir(t)
+	defer back()
+	gitInit(t)
+	gitCommit(t, "commit1")
+	gitTag(t, "v0.0.1")
 	var ctx = &context.Context{
 		Config: config.Project{},
 	}
 	assert.NoError(Pipe{}.Run(ctx))
-	assert.NotEmpty(ctx.Git.CurrentTag)
-	assert.NotEmpty(ctx.Git.PreviousTag)
-	assert.NotEmpty(ctx.Git.Diff)
+	assert.Equal("v0.0.1", ctx.Git.CurrentTag)
+}
+
+func TestNewRepository(t *testing.T) {
+	var assert = assert.New(t)
+	_, back := createAndChdir(t)
+	defer back()
+	gitInit(t)
+	var ctx = &context.Context{
+		Config: config.Project{},
+	}
+	assert.Error(Pipe{}.Run(ctx))
+}
+
+func TestInvalidTagFormat(t *testing.T) {
+	var assert = assert.New(t)
+	_, back := createAndChdir(t)
+	defer back()
+	gitInit(t)
+	gitCommit(t, "commit2")
+	gitTag(t, "sadasd")
+	var ctx = &context.Context{
+		Config: config.Project{},
+	}
+	assert.EqualError(Pipe{}.Run(ctx), "sadasd is not in a valid version format")
+	assert.Equal("sadasd", ctx.Git.CurrentTag)
+}
+
+func TestDirty(t *testing.T) {
+	var assert = assert.New(t)
+	folder, back := createAndChdir(t)
+	defer back()
+	gitInit(t)
+	dummy, err := os.Create(filepath.Join(folder, "dummy"))
+	assert.NoError(err)
+	gitAdd(t)
+	gitCommit(t, "commit2")
+	gitTag(t, "v0.0.1")
+	assert.NoError(ioutil.WriteFile(dummy.Name(), []byte("lorem ipsum"), 0644))
+	var ctx = &context.Context{
+		Config: config.Project{},
+	}
+	err = Pipe{}.Run(ctx)
+	assert.Error(err)
+	assert.Contains(err.Error(), "git is currently in a dirty state:")
+}
+
+func TestTagIsNotLastCommit(t *testing.T) {
+	var assert = assert.New(t)
+	_, back := createAndChdir(t)
+	defer back()
+	gitInit(t)
+	gitCommit(t, "commit3")
+	gitTag(t, "v0.0.1")
+	gitCommit(t, "commit4")
+	var ctx = &context.Context{
+		Config: config.Project{},
+	}
+	err := Pipe{}.Run(ctx)
+	assert.Error(err)
+	assert.Contains(err.Error(), "fatal: no tag exactly matches")
+}
+
+//
+// helper functions
+//
+
+func createAndChdir(t *testing.T) (current string, back func()) {
+	var assert = assert.New(t)
+	folder, err := ioutil.TempDir("", "goreleasertest")
+	assert.NoError(err)
+	previous, err := os.Getwd()
+	assert.NoError(err)
+	assert.NoError(os.Chdir(folder))
+	return folder, func() {
+		assert.NoError(os.Chdir(previous))
+	}
+}
+
+func gitInit(t *testing.T) {
+	var assert = assert.New(t)
+	out, err := git("init")
+	assert.NoError(err)
+	assert.Contains(out, "Initialized empty Git repository")
+}
+
+func gitCommit(t *testing.T, msg string) {
+	var assert = assert.New(t)
+	out, err := fakeGit("commit", "--allow-empty", "-m", msg)
+	assert.NoError(err)
+	assert.Contains(out, "master", msg)
+}
+
+func gitTag(t *testing.T, tag string) {
+	var assert = assert.New(t)
+	out, err := fakeGit("tag", tag)
+	assert.NoError(err)
+	assert.Empty(out)
+}
+
+func gitAdd(t *testing.T) {
+	var assert = assert.New(t)
+	out, err := git("add", "-A")
+	assert.NoError(err)
+	assert.Empty(out)
+}
+
+func fakeGit(args ...string) (string, error) {
+	var allArgs = []string{
+		"-c",
+		"user.name='GoReleaser'",
+		"-c",
+		"user.email='test@goreleaser.github.com'",
+	}
+	allArgs = append(allArgs, args...)
+	return git(allArgs...)
 }

pipeline/git/log.go

@@ -1,18 +0,0 @@
-package git
-
-import "os/exec"
-
-func log(previous, current string) (str string, err error) {
-	cmd := exec.Command(
-		"git",
-		"log",
-		"--pretty=oneline",
-		"--abbrev-commit",
-		previous+".."+current,
-	)
-	bts, err := cmd.CombinedOutput()
-	if err != nil {
-		return str, err
-	}
-	return string(bts), err
-}

pipeline/git/log_test.go

@@ -1,25 +0,0 @@
-package git
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestLog(t *testing.T) {
-	assert := assert.New(t)
-	tag, err := currentTag()
-	assert.NoError(err)
-	tagb, err := previousTag(tag)
-	assert.NoError(err)
-	log, err := log(tagb, tag)
-	assert.NoError(err)
-	assert.NotEmpty(log)
-}
-
-func TestLogInvalidRef(t *testing.T) {
-	assert := assert.New(t)
-	log, err := log("wtfff", "nope")
-	assert.Error(err)
-	assert.Empty(log)
-}

pipeline/git/tag.go

@@ -1,33 +0,0 @@
-package git
-
-import (
-	"errors"
-	"os/exec"
-	"strings"
-)
-
-func currentTag() (tag string, err error) {
-	return getTag("")
-}
-
-func previousTag(base string) (tag string, err error) {
-	return getTag(base + "^")
-}
-
-func getTag(ref string) (tag string, err error) {
-	cmd := exec.Command(
-		"git",
-		"describe",
-		"--tags",
-		"--abbrev=0",
-		"--always",
-	)
-	if ref != "" {
-		cmd.Args = append(cmd.Args, ref)
-	}
-	bts, err := cmd.CombinedOutput()
-	if err != nil {
-		return tag, errors.New(err.Error() + ": " + string(bts))
-	}
-	return strings.Split(string(bts), "\n")[0], err
-}

pipeline/git/tag_test.go

@@ -1,30 +0,0 @@
-package git
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestCurrentTag(t *testing.T) {
-	assert := assert.New(t)
-	tag, err := currentTag()
-	assert.NoError(err)
-	assert.NotEmpty(tag)
-}
-
-func TestPreviousTag(t *testing.T) {
-	assert := assert.New(t)
-	tag, err := currentTag()
-	assert.NoError(err)
-	tag, err = previousTag(tag)
-	assert.NoError(err)
-	assert.NotEmpty(tag)
-}
-
-func TestInvalidRef(t *testing.T) {
-	assert := assert.New(t)
-	tag, err := previousTag("this-should-not-exist")
-	assert.Error(err)
-	assert.Empty(tag)
-}

pipeline/release/release_test.go

@@ -2,6 +2,7 @@ package release
 
 import (
 	"bytes"
+	"errors"
 	"io/ioutil"
 	"os"
 	"path/filepath"
@@ -18,8 +19,8 @@ func TestPipeDescription(t *testing.T) {
 }
 
 func TestRunPipe(t *testing.T) {
-	assert := assert.New(t)
-	folder, err := ioutil.TempDir("", "gorelasertest")
+	var assert = assert.New(t)
+	folder, err := ioutil.TempDir("", "goreleasertest")
 	assert.NoError(err)
 	tarfile, err := os.Create(filepath.Join(folder, "bin.tar.gz"))
 	assert.NoError(err)
@@ -47,8 +48,31 @@ func TestRunPipe(t *testing.T) {
 	assert.True(client.UploadedFile)
 }
 
+func TestRunPipeReleaseCreationFailed(t *testing.T) {
+	var assert = assert.New(t)
+	var ctx = &context.Context{
+		Git: context.GitInfo{
+			CurrentTag: "v1.0.0",
+		},
+		Config: config.Project{
+			Release: config.Release{
+				GitHub: config.Repo{
+					Owner: "test",
+					Name:  "test",
+				},
+			},
+		},
+	}
+	client := &DummyClient{
+		FailToCreateRelease: true,
+	}
+	assert.Error(doRun(ctx, client))
+	assert.False(client.CreatedRelease)
+	assert.False(client.UploadedFile)
+}
+
 func TestRunPipeWithFileThatDontExist(t *testing.T) {
-	assert := assert.New(t)
+	var assert = assert.New(t)
 	var ctx = &context.Context{
 		Git: context.GitInfo{
 			CurrentTag: "v1.0.0",
@@ -69,7 +93,38 @@ func TestRunPipeWithFileThatDontExist(t *testing.T) {
 	assert.False(client.UploadedFile)
 }
 
+func TestRunPipeUploadFailure(t *testing.T) {
+	var assert = assert.New(t)
+	folder, err := ioutil.TempDir("", "goreleasertest")
+	assert.NoError(err)
+	tarfile, err := os.Create(filepath.Join(folder, "bin.tar.gz"))
+	assert.NoError(err)
+	var ctx = &context.Context{
+		Git: context.GitInfo{
+			CurrentTag: "v1.0.0",
+		},
+		Config: config.Project{
+			Dist: folder,
+			Release: config.Release{
+				GitHub: config.Repo{
+					Owner: "test",
+					Name:  "test",
+				},
+			},
+		},
+	}
+	ctx.AddArtifact(tarfile.Name())
+	client := &DummyClient{
+		FailToUpload: true,
+	}
+	assert.Error(doRun(ctx, client))
+	assert.True(client.CreatedRelease)
+	assert.False(client.UploadedFile)
+}
+
 type DummyClient struct {
+	FailToCreateRelease bool
+	FailToUpload        bool
 	CreatedRelease      bool
 	UploadedFile        bool
 }
@@ -79,6 +134,9 @@ func (client *DummyClient) GetInfo(ctx *context.Context) (info client.Info, err
 }
 
 func (client *DummyClient) CreateRelease(ctx *context.Context) (releaseID int, err error) {
+	if client.FailToCreateRelease {
+		return 0, errors.New("release failed")
+	}
 	client.CreatedRelease = true
 	return
 }
@@ -88,6 +146,9 @@ func (client *DummyClient) CreateFile(ctx *context.Context, content bytes.Buffer
 }
 
 func (client *DummyClient) Upload(ctx *context.Context, releaseID int, name string, file *os.File) (err error) {
+	if client.FailToUpload {
+		return errors.New("upload failed")
+	}
 	client.UploadedFile = true
 	return
 }

pipeline/source/source.go

@@ -1,52 +0,0 @@
-// Package source provides pipes to take care of validating the current
-// git repo state.
-// For the releasing process we need the files of the tag we are releasing.
-package source
-
-import (
-	"os/exec"
-	"strings"
-
-	"github.com/goreleaser/goreleaser/context"
-)
-
-// ErrDirty happens when the repo has uncommitted/unstashed changes
-type ErrDirty struct {
-	status string
-}
-
-func (e ErrDirty) Error() string {
-	return "git is currently in a dirty state:\n" + e.status
-}
-
-// ErrWrongRef happens when the HEAD reference is different from the tag being built
-type ErrWrongRef struct {
-	status string
-}
-
-func (e ErrWrongRef) Error() string {
-	return e.status
-}
-
-// Pipe to make sure we are in the latest Git tag as source.
-type Pipe struct{}
-
-// Description of the pipe
-func (p Pipe) Description() string {
-	return "Validating current git state"
-}
-
-// Run errors we the repo is dirty or if the current ref is different from the
-// tag ref
-func (p Pipe) Run(ctx *context.Context) error {
-	bts, err := exec.Command("git", "diff").CombinedOutput()
-	if err != nil || strings.TrimSpace(string(bts)) != "" {
-		return ErrDirty{string(bts)}
-	}
-
-	cmd := exec.Command("git", "describe", "--exact-match", "--tags", "--match", ctx.Git.CurrentTag)
-	if bts, err := cmd.CombinedOutput(); err != nil {
-		return ErrWrongRef{string(bts)}
-	}
-	return nil
-}