diff --git a/post-processor/vagrant/aws_test.go b/post-processor/vagrant/aws_test.go
index b1d44b7e0..7754a48ec 100644
--- a/post-processor/vagrant/aws_test.go
+++ b/post-processor/vagrant/aws_test.go
@@ -1,7 +1,10 @@
 package vagrant
 
 import (
+	"strings"
 	"testing"
+
+	"github.com/mitchellh/packer/packer"
 )
 
 func TestAWSProvider_impl(t *testing.T) {
@@ -15,3 +18,20 @@ func TestAWSProvider_KeepInputArtifact(t *testing.T) {
 		t.Fatal("should keep input artifact")
 	}
 }
+
+func TestAWSProvider_ArtifactId(t *testing.T) {
+	p := new(AWSProvider)
+	ui := testUi()
+	artifact := &packer.MockArtifact{
+		IdValue: "us-east-1:ami-1234",
+	}
+
+	vagrantfile, _, err := p.Process(ui, artifact, "foo")
+	if err != nil {
+		t.Fatalf("should not have error: %s", err)
+	}
+	result := `aws.region_config "us-east-1", ami: "ami-1234"`
+	if strings.Index(vagrantfile, result) == -1 {
+		t.Fatalf("wrong substitution: %s", vagrantfile)
+	}
+}
diff --git a/post-processor/vagrant/digitalocean_test.go b/post-processor/vagrant/digitalocean_test.go
index 09ca6fdf4..964877c75 100644
--- a/post-processor/vagrant/digitalocean_test.go
+++ b/post-processor/vagrant/digitalocean_test.go
@@ -1,9 +1,41 @@
 package vagrant
 
 import (
+	"strings"
 	"testing"
+
+	"github.com/mitchellh/packer/packer"
 )
 
 func TestDigitalOceanProvider_impl(t *testing.T) {
 	var _ Provider = new(DigitalOceanProvider)
 }
+
+func TestDigitalOceanProvider_KeepInputArtifact(t *testing.T) {
+	p := new(DigitalOceanProvider)
+
+	if !p.KeepInputArtifact() {
+		t.Fatal("should keep input artifact")
+	}
+}
+
+func TestDigitalOceanProvider_ArtifactId(t *testing.T) {
+	p := new(DigitalOceanProvider)
+	ui := testUi()
+	artifact := &packer.MockArtifact{
+		IdValue: "San Francisco:42",
+	}
+
+	vagrantfile, _, err := p.Process(ui, artifact, "foo")
+	if err != nil {
+		t.Fatalf("should not have error: %s", err)
+	}
+	image := `digital_ocean.image = "42"`
+	if strings.Index(vagrantfile, image) == -1 {
+		t.Fatalf("wrong image substitution: %s", vagrantfile)
+	}
+	region := `digital_ocean.region = "San Francisco"`
+	if strings.Index(vagrantfile, region) == -1 {
+		t.Fatalf("wrong region substitution: %s", vagrantfile)
+	}
+}