diff --git a/builder/amazon/common/interpolate_build_info_test.go b/builder/amazon/common/interpolate_build_info_test.go
new file mode 100644
index 000000000..7391fcd5d
--- /dev/null
+++ b/builder/amazon/common/interpolate_build_info_test.go
@@ -0,0 +1,63 @@
+package common
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/service/ec2"
+	"github.com/hashicorp/packer/helper/multistep"
+)
+
+func testImage() *ec2.Image {
+	return &ec2.Image{
+		ImageId: aws.String("ami-abcd1234"),
+		Name:    aws.String("ami_test_name"),
+		Tags: []*ec2.Tag{
+			{
+				Key:   aws.String("key-1"),
+				Value: aws.String("value-1"),
+			},
+			{
+				Key:   aws.String("key-2"),
+				Value: aws.String("value-2"),
+			},
+		},
+	}
+}
+
+func testState() multistep.StateBag {
+	state := new(multistep.BasicStateBag)
+	return state
+}
+
+func TestInterpolateBuildInfo_extractBuildInfo_noSourceImage(t *testing.T) {
+	state := testState()
+	buildInfo := extractBuildInfo("foo", state)
+
+	expected := BuildInfoTemplate{
+		BuildRegion: "foo",
+	}
+	if !reflect.DeepEqual(*buildInfo, expected) {
+		t.Fatalf("Unexpected BuildInfoTemplate: expected %#v got %#v\n", expected, *buildInfo)
+	}
+}
+
+func TestInterpolateBuildInfo_extractBuildInfo_withSourceImage(t *testing.T) {
+	state := testState()
+	state.Put("source_image", testImage())
+	buildInfo := extractBuildInfo("foo", state)
+
+	expected := BuildInfoTemplate{
+		BuildRegion:   "foo",
+		SourceAMI:     "ami-abcd1234",
+		SourceAMIName: "ami_test_name",
+		SourceAMITags: map[string]string{
+			"key-1": "value-1",
+			"key-2": "value-2",
+		},
+	}
+	if !reflect.DeepEqual(*buildInfo, expected) {
+		t.Fatalf("Unexpected BuildInfoTemplate: expected %#v got %#v\n", expected, *buildInfo)
+	}
+}