diff --git a/terraform/graph_builder_plan_test.go b/terraform/graph_builder_plan_test.go
new file mode 100644
index 000000000..235fea745
--- /dev/null
+++ b/terraform/graph_builder_plan_test.go
@@ -0,0 +1,52 @@
+package terraform
+
+import (
+	"reflect"
+	"strings"
+	"testing"
+)
+
+func TestPlanGraphBuilder_impl(t *testing.T) {
+	var _ GraphBuilder = new(PlanGraphBuilder)
+}
+
+func TestPlanGraphBuilder(t *testing.T) {
+	b := &PlanGraphBuilder{
+		Module:        testModule(t, "graph-builder-plan-basic"),
+		Providers:     []string{"aws", "openstack"},
+		DisableReduce: true,
+	}
+
+	g, err := b.Build(RootModulePath)
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	if !reflect.DeepEqual(g.Path, RootModulePath) {
+		t.Fatalf("bad: %#v", g.Path)
+	}
+
+	actual := strings.TrimSpace(g.String())
+	expected := strings.TrimSpace(testPlanGraphBuilderStr)
+	if actual != expected {
+		t.Fatalf("bad: %s", actual)
+	}
+}
+
+const testPlanGraphBuilderStr = `
+aws_instance.web
+  aws_security_group.firewall
+  provider.aws
+  var.foo
+aws_load_balancer.weblb
+  aws_instance.web
+  provider.aws
+aws_security_group.firewall
+  provider.aws
+openstack_floating_ip.random
+  provider.openstack
+provider.aws
+  openstack_floating_ip.random
+provider.openstack
+var.foo
+`
diff --git a/terraform/test-fixtures/graph-builder-plan-basic/main.tf b/terraform/test-fixtures/graph-builder-plan-basic/main.tf
new file mode 100644
index 000000000..a40802cc9
--- /dev/null
+++ b/terraform/test-fixtures/graph-builder-plan-basic/main.tf
@@ -0,0 +1,24 @@
+variable "foo" {
+    default = "bar"
+    description = "bar"
+}
+
+provider "aws" {
+    foo = "${openstack_floating_ip.random.value}"
+}
+
+resource "openstack_floating_ip" "random" {}
+
+resource "aws_security_group" "firewall" {}
+
+resource "aws_instance" "web" {
+    ami = "${var.foo}"
+    security_groups = [
+        "foo",
+        "${aws_security_group.firewall.foo}"
+    ]
+}
+
+resource "aws_load_balancer" "weblb" {
+    members = "${aws_instance.web.id_list}"
+}