added some docker pipe tests

pipeline/docker/docker.go

@@ -7,10 +7,12 @@ import (
 	"os/exec"
 	"path/filepath"
 
-	"github.com/apex/log"
 	"github.com/goreleaser/goreleaser/config"
 	"github.com/goreleaser/goreleaser/context"
 	"github.com/goreleaser/goreleaser/pipeline"
+
+	"github.com/apex/log"
+
 	"github.com/pkg/errors"
 )
 

pipeline/docker/docker_test.go

@@ -1,15 +1,73 @@
 package docker
 
 import (
+	"io/ioutil"
 	"os"
+	"os/exec"
+	"path/filepath"
 	"testing"
 
 	"github.com/goreleaser/goreleaser/config"
 	"github.com/goreleaser/goreleaser/context"
 	"github.com/goreleaser/goreleaser/pipeline"
-	"github.com/tj/assert"
+
+	"github.com/stretchr/testify/assert"
 )
 
+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))
+	var binPath = filepath.Join(dist, "mybin", "mybin")
+	_, err = os.Create(binPath)
+	assert.NoError(err)
+	// this might fail as the image doesnt exist yet, so lets ignore the error
+	_ = exec.Command("docker", "rmi", "goreleaser/test_run_pipe:v1.0.0").Run()
+	var ctx = &context.Context{
+		Git: context.GitInfo{
+			CurrentTag: "v1.0.0",
+		},
+		Publish: true,
+		Config: config.Project{
+			ProjectName: "mybin",
+			Dist:        dist,
+			Dockers: []config.Docker{
+				{
+					Image:      "goreleaser/test_run_pipe",
+					Goos:       "linux",
+					Goarch:     "amd64",
+					Dockerfile: "testdata/Dockerfile",
+					Binary:     "mybin",
+				},
+				{
+					Image:      "goreleaser/test_run_pipe_nope",
+					Goos:       "linux",
+					Goarch:     "amd64",
+					Dockerfile: "testdata/Dockerfile",
+					Binary:     "otherbin",
+				},
+			},
+		},
+	}
+	for _, plat := range []string{"linuxamd64", "linux386", "darwinamd64"} {
+		ctx.AddBinary(plat, "mybin", "mybin", binPath)
+	}
+	assert.NoError(Pipe{}.Run(ctx))
+	// this might should not fail as the image should have been created when
+	// the step ran
+	assert.NoError(
+		exec.Command("docker", "rmi", "goreleaser/test_run_pipe:v1.0.0").Run(),
+	)
+	// the test_run_pipe_nope image should not have been created, so deleting
+	// it should fail
+	assert.Error(
+		exec.Command("docker", "rmi", "goreleaser/test_run_pipe_nope:v1.0.0").Run(),
+	)
+}
+
 func TestDescription(t *testing.T) {
 	var assert = assert.New(t)
 	assert.NotEmpty(Pipe{}.Description())

pipeline/docker/testdata/Dockerfile

@@ -0,0 +1,2 @@
+FROM scratch
+ADD mybin /