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78 lines
2.7 KiB
Go
78 lines
2.7 KiB
Go
// +build linux
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package quota // import "github.com/docker/docker/quota"
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import (
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"io"
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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"gotest.tools/v3/assert"
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is "gotest.tools/v3/assert/cmp"
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)
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// 10MB
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const testQuotaSize = 10 * 1024 * 1024
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func TestBlockDev(t *testing.T) {
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if msg, ok := CanTestQuota(); !ok {
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t.Skip(msg)
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}
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// get sparse xfs test image
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imageFileName, err := PrepareQuotaTestImage(t)
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if err != nil {
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t.Fatal(err)
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}
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defer os.Remove(imageFileName)
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t.Run("testBlockDevQuotaDisabled", WrapMountTest(imageFileName, false, testBlockDevQuotaDisabled))
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t.Run("testBlockDevQuotaEnabled", WrapMountTest(imageFileName, true, testBlockDevQuotaEnabled))
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t.Run("testSmallerThanQuota", WrapMountTest(imageFileName, true, WrapQuotaTest(testSmallerThanQuota)))
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t.Run("testBiggerThanQuota", WrapMountTest(imageFileName, true, WrapQuotaTest(testBiggerThanQuota)))
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t.Run("testRetrieveQuota", WrapMountTest(imageFileName, true, WrapQuotaTest(testRetrieveQuota)))
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}
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func testBlockDevQuotaDisabled(t *testing.T, mountPoint, backingFsDev, testDir string) {
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hasSupport, err := hasQuotaSupport(backingFsDev)
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assert.NilError(t, err)
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assert.Check(t, !hasSupport)
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}
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func testBlockDevQuotaEnabled(t *testing.T, mountPoint, backingFsDev, testDir string) {
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hasSupport, err := hasQuotaSupport(backingFsDev)
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assert.NilError(t, err)
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assert.Check(t, hasSupport)
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}
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func testSmallerThanQuota(t *testing.T, ctrl *Control, homeDir, testDir, testSubDir string) {
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assert.NilError(t, ctrl.SetQuota(testSubDir, Quota{testQuotaSize}))
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smallerThanQuotaFile := filepath.Join(testSubDir, "smaller-than-quota")
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assert.NilError(t, ioutil.WriteFile(smallerThanQuotaFile, make([]byte, testQuotaSize/2), 0644))
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assert.NilError(t, os.Remove(smallerThanQuotaFile))
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}
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func testBiggerThanQuota(t *testing.T, ctrl *Control, homeDir, testDir, testSubDir string) {
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// Make sure the quota is being enforced
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// TODO: When we implement this under EXT4, we need to shed CAP_SYS_RESOURCE, otherwise
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// we're able to violate quota without issue
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assert.NilError(t, ctrl.SetQuota(testSubDir, Quota{testQuotaSize}))
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biggerThanQuotaFile := filepath.Join(testSubDir, "bigger-than-quota")
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err := ioutil.WriteFile(biggerThanQuotaFile, make([]byte, testQuotaSize+1), 0644)
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assert.Assert(t, is.ErrorContains(err, ""))
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if err == io.ErrShortWrite {
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assert.NilError(t, os.Remove(biggerThanQuotaFile))
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}
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}
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func testRetrieveQuota(t *testing.T, ctrl *Control, homeDir, testDir, testSubDir string) {
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// Validate that we can retrieve quota
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assert.NilError(t, ctrl.SetQuota(testSubDir, Quota{testQuotaSize}))
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var q Quota
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assert.NilError(t, ctrl.GetQuota(testSubDir, &q))
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assert.Check(t, is.Equal(uint64(testQuotaSize), q.Size))
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}
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