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81 lines
2.6 KiB
Go
81 lines
2.6 KiB
Go
// +build linux
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package devmapper
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import (
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"fmt"
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"testing"
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"github.com/docker/docker/daemon/graphdriver"
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"github.com/docker/docker/daemon/graphdriver/graphtest"
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)
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func init() {
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// Reduce the size the the base fs and loopback for the tests
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defaultDataLoopbackSize = 300 * 1024 * 1024
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defaultMetaDataLoopbackSize = 200 * 1024 * 1024
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defaultBaseFsSize = 300 * 1024 * 1024
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defaultUdevSyncOverride = true
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if err := graphtest.InitLoopbacks(); err != nil {
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panic(err)
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}
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}
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// This avoids creating a new driver for each test if all tests are run
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// Make sure to put new tests between TestDevmapperSetup and TestDevmapperTeardown
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func TestDevmapperSetup(t *testing.T) {
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graphtest.GetDriver(t, "devicemapper")
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}
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func TestDevmapperCreateEmpty(t *testing.T) {
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graphtest.DriverTestCreateEmpty(t, "devicemapper")
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}
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func TestDevmapperCreateBase(t *testing.T) {
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graphtest.DriverTestCreateBase(t, "devicemapper")
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}
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func TestDevmapperCreateSnap(t *testing.T) {
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graphtest.DriverTestCreateSnap(t, "devicemapper")
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}
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func TestDevmapperTeardown(t *testing.T) {
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graphtest.PutDriver(t)
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}
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func TestDevmapperReduceLoopBackSize(t *testing.T) {
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tenMB := int64(10 * 1024 * 1024)
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testChangeLoopBackSize(t, -tenMB, defaultDataLoopbackSize, defaultMetaDataLoopbackSize)
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}
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func TestDevmapperIncreaseLoopBackSize(t *testing.T) {
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tenMB := int64(10 * 1024 * 1024)
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testChangeLoopBackSize(t, tenMB, defaultDataLoopbackSize+tenMB, defaultMetaDataLoopbackSize+tenMB)
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}
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func testChangeLoopBackSize(t *testing.T, delta, expectDataSize, expectMetaDataSize int64) {
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driver := graphtest.GetDriver(t, "devicemapper").(*graphtest.Driver).Driver.(*graphdriver.NaiveDiffDriver).ProtoDriver.(*Driver)
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defer graphtest.PutDriver(t)
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// make sure data or metadata loopback size are the default size
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if s := driver.DeviceSet.Status(); s.Data.Total != uint64(defaultDataLoopbackSize) || s.Metadata.Total != uint64(defaultMetaDataLoopbackSize) {
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t.Fatalf("data or metadata loop back size is incorrect")
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}
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if err := driver.Cleanup(); err != nil {
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t.Fatal(err)
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}
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//Reload
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d, err := Init(driver.home, []string{
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fmt.Sprintf("dm.loopdatasize=%d", defaultDataLoopbackSize+delta),
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fmt.Sprintf("dm.loopmetadatasize=%d", defaultMetaDataLoopbackSize+delta),
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})
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if err != nil {
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t.Fatalf("error creating devicemapper driver: %v", err)
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}
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driver = d.(*graphdriver.NaiveDiffDriver).ProtoDriver.(*Driver)
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if s := driver.DeviceSet.Status(); s.Data.Total != uint64(expectDataSize) || s.Metadata.Total != uint64(expectMetaDataSize) {
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t.Fatalf("data or metadata loop back size is incorrect")
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}
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if err := driver.Cleanup(); err != nil {
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t.Fatal(err)
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}
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}
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