package googlecompute

import (
	"testing"

	"github.com/hashicorp/packer/packer"
)

func TestArtifact_impl(t *testing.T) {
	var _ packer.Artifact = new(Artifact)
}

func TestArtifactState_StateData(t *testing.T) {
	expectedData := "this is the data"
	artifact := &Artifact{
		StateData: map[string]interface{}{"state_data": expectedData},
	}

	// Valid state
	result := artifact.State("state_data")
	if result != expectedData {
		t.Fatalf("Bad: State data was %s instead of %s", result, expectedData)
	}

	// Invalid state
	result = artifact.State("invalid_key")
	if result != nil {
		t.Fatalf("Bad: State should be nil for invalid state data name")
	}

	// Nil StateData should not fail and should return nil
	artifact = &Artifact{}
	result = artifact.State("key")
	if result != nil {
		t.Fatalf("Bad: State should be nil for nil StateData")
	}
}