func assertNImages(graph *graph.Graph, t *testing.T, n int) {
if images, err := graph.Map(); err != nil {
t.Fatal(err)
} else if actualN := len(images); actualN != n {
t.Fatalf("Expected %d images, found %d", n, actualN)
}
}
func createTestImage(graph *graph.Graph, t *testing.T) *image.Image {
archive, err := fakeTar()
if err != nil {
t.Fatal(err)
}
img, err := graph.Create(archive, "", "", "Test image", "", nil, nil)
if err != nil {
t.Fatal(err)
}
return img
}
func checkIsParent(id, parent string, g *graph.Graph) (bool, error) {
isParent := false
img, err := g.Get(id)
if err != nil {
return false, err
}
for {
if img.Parent == "" {
break
}
if img.Parent == parent {
isParent = true
break
}
img, err = g.Get(img.Parent)
if err != nil {
break
}
}
return isParent, err
}
func nukeGraph(graph *graph.Graph) {
graph.Driver().Cleanup()
os.RemoveAll(graph.Root)
}