| // +build !windows |
| |
| package layer |
| |
| import "testing" |
| |
| func graphDiffSize(ls Store, l Layer) (int64, error) { |
| cl := getCachedLayer(l) |
| var parent string |
| if cl.parent != nil { |
| parent = cl.parent.cacheID |
| } |
| return ls.(*layerStore).driver.DiffSize(cl.cacheID, parent) |
| } |
| |
| // Unix as Windows graph driver does not support Changes which is indirectly |
| // invoked by calling DiffSize on the driver |
| func TestLayerSize(t *testing.T) { |
| ls, _, cleanup := newTestStore(t) |
| defer cleanup() |
| |
| content1 := []byte("Base contents") |
| content2 := []byte("Added contents") |
| |
| layer1, err := createLayer(ls, "", initWithFiles(newTestFile("file1", content1, 0644))) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| layer2, err := createLayer(ls, layer1.ChainID(), initWithFiles(newTestFile("file2", content2, 0644))) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| layer1DiffSize, err := graphDiffSize(ls, layer1) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if int(layer1DiffSize) != len(content1) { |
| t.Fatalf("Unexpected diff size %d, expected %d", layer1DiffSize, len(content1)) |
| } |
| |
| layer1Size, err := layer1.Size() |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if expected := len(content1); int(layer1Size) != expected { |
| t.Fatalf("Unexpected size %d, expected %d", layer1Size, expected) |
| } |
| |
| layer2DiffSize, err := graphDiffSize(ls, layer2) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if int(layer2DiffSize) != len(content2) { |
| t.Fatalf("Unexpected diff size %d, expected %d", layer2DiffSize, len(content2)) |
| } |
| |
| layer2Size, err := layer2.Size() |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if expected := len(content1) + len(content2); int(layer2Size) != expected { |
| t.Fatalf("Unexpected size %d, expected %d", layer2Size, expected) |
| } |
| |
| } |