66 lines
1.6 KiB
Go
66 lines
1.6 KiB
Go
//go:build !windows
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// +build !windows
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package layer // import "github.com/docker/docker/layer"
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import (
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"testing"
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)
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func graphDiffSize(ls Store, l Layer) (int64, error) {
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cl := getCachedLayer(l)
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var parent string
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if cl.parent != nil {
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parent = cl.parent.cacheID
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}
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return ls.(*layerStore).driver.DiffSize(cl.cacheID, parent)
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}
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// Unix as Windows graph driver does not support Changes which is indirectly
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// invoked by calling DiffSize on the driver
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func TestLayerSize(t *testing.T) {
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ls, _, cleanup := newTestStore(t)
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defer cleanup()
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content1 := []byte("Base contents")
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content2 := []byte("Added contents")
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layer1, err := createLayer(ls, "", initWithFiles(newTestFile("file1", content1, 0o644)))
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if err != nil {
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t.Fatal(err)
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}
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layer2, err := createLayer(ls, layer1.ChainID(), initWithFiles(newTestFile("file2", content2, 0o644)))
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if err != nil {
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t.Fatal(err)
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}
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layer1DiffSize, err := graphDiffSize(ls, layer1)
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if err != nil {
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t.Fatal(err)
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}
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if int(layer1DiffSize) != len(content1) {
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t.Fatalf("Unexpected diff size %d, expected %d", layer1DiffSize, len(content1))
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}
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layer1Size := layer1.Size()
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if expected := len(content1); int(layer1Size) != expected {
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t.Fatalf("Unexpected size %d, expected %d", layer1Size, expected)
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}
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layer2DiffSize, err := graphDiffSize(ls, layer2)
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if err != nil {
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t.Fatal(err)
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}
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if int(layer2DiffSize) != len(content2) {
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t.Fatalf("Unexpected diff size %d, expected %d", layer2DiffSize, len(content2))
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}
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layer2Size := layer2.Size()
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if expected := len(content1) + len(content2); int(layer2Size) != expected {
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t.Fatalf("Unexpected size %d, expected %d", layer2Size, expected)
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}
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}
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