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211 lines
5.3 KiB
211 lines
5.3 KiB
/*
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* Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"errors"
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"strconv"
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"testing"
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"time"
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)
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const MiB = 1024 * 1024
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// Test xlMetaV1.AddObjectPart()
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func TestAddObjectPart(t *testing.T) {
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testCases := []struct {
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partNum int
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expectedIndex int
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}{
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{1, 0},
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{2, 1},
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{4, 2},
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{5, 3},
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{7, 4},
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// Insert part.
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{3, 2},
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// Replace existing part.
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{4, 3},
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// Missing part.
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{6, -1},
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}
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// Setup.
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xlMeta := newXLMetaV1("test-object", 8, 8)
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if !xlMeta.IsValid() {
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t.Fatalf("unable to get xl meta")
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}
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// Test them.
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for _, testCase := range testCases {
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if testCase.expectedIndex > -1 {
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partNumString := strconv.Itoa(testCase.partNum)
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xlMeta.AddObjectPart(testCase.partNum, "part."+partNumString, "etag."+partNumString, int64(testCase.partNum+MiB))
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}
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if index := objectPartIndex(xlMeta.Parts, testCase.partNum); index != testCase.expectedIndex {
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t.Fatalf("%+v: expected = %d, got: %d", testCase, testCase.expectedIndex, index)
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}
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}
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}
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// Test objectPartIndex().
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// generates a sample xlMeta data and asserts the output of objectPartIndex() with the expected value.
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func TestObjectPartIndex(t *testing.T) {
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testCases := []struct {
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partNum int
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expectedIndex int
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}{
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{2, 1},
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{1, 0},
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{5, 3},
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{4, 2},
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{7, 4},
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}
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// Setup.
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xlMeta := newXLMetaV1("test-object", 8, 8)
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if !xlMeta.IsValid() {
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t.Fatalf("unable to get xl meta")
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}
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// Add some parts for testing.
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for _, testCase := range testCases {
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partNumString := strconv.Itoa(testCase.partNum)
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xlMeta.AddObjectPart(testCase.partNum, "part."+partNumString, "etag."+partNumString, int64(testCase.partNum+MiB))
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}
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// Add failure test case.
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testCases = append(testCases, struct {
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partNum int
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expectedIndex int
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}{6, -1})
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// Test them.
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for _, testCase := range testCases {
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if index := objectPartIndex(xlMeta.Parts, testCase.partNum); index != testCase.expectedIndex {
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t.Fatalf("%+v: expected = %d, got: %d", testCase, testCase.expectedIndex, index)
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}
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}
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}
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// Test xlMetaV1.ObjectToPartOffset().
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func TestObjectToPartOffset(t *testing.T) {
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// Setup.
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xlMeta := newXLMetaV1("test-object", 8, 8)
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if !xlMeta.IsValid() {
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t.Fatalf("unable to get xl meta")
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}
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// Add some parts for testing.
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// Total size of all parts is 5,242,899 bytes.
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for _, partNum := range []int{1, 2, 4, 5, 7} {
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partNumString := strconv.Itoa(partNum)
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xlMeta.AddObjectPart(partNum, "part."+partNumString, "etag."+partNumString, int64(partNum+MiB))
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}
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testCases := []struct {
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offset int64
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expectedIndex int
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expectedOffset int64
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expectedErr error
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}{
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{0, 0, 0, nil},
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{MiB, 0, MiB, nil},
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{1 + MiB, 1, 0, nil},
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{2 + MiB, 1, 1, nil},
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// Its valid for zero sized object.
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{-1, 0, -1, nil},
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// Max fffset is always (size - 1).
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{(1 + 2 + 4 + 5 + 7) + (5 * MiB) - 1, 4, 1048582, nil},
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// Error if offset is size.
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{(1 + 2 + 4 + 5 + 7) + (5 * MiB), 0, 0, InvalidRange{}},
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}
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// Test them.
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for _, testCase := range testCases {
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index, offset, err := xlMeta.ObjectToPartOffset(testCase.offset)
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err = errorCause(err)
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if err != testCase.expectedErr {
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t.Fatalf("%+v: expected = %s, got: %s", testCase, testCase.expectedErr, err)
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}
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if index != testCase.expectedIndex {
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t.Fatalf("%+v: index: expected = %d, got: %d", testCase, testCase.expectedIndex, index)
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}
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if offset != testCase.expectedOffset {
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t.Fatalf("%+v: offset: expected = %d, got: %d", testCase, testCase.expectedOffset, offset)
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}
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}
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}
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// Helper function to check if two xlMetaV1 values are similar.
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func isXLMetaSimilar(m, n xlMetaV1) bool {
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if m.Version != n.Version {
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return false
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}
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if m.Format != n.Format {
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return false
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}
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if len(m.Parts) != len(n.Parts) {
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return false
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}
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return true
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}
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func TestPickValidXLMeta(t *testing.T) {
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obj := "object"
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x1 := newXLMetaV1(obj, 4, 4)
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now := time.Now().UTC()
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x1.Stat.ModTime = now
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invalidX1 := x1
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invalidX1.Version = "invalid-version"
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xs := []xlMetaV1{x1, x1, x1, x1}
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invalidXS := []xlMetaV1{invalidX1, invalidX1, invalidX1, invalidX1}
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testCases := []struct {
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metaArr []xlMetaV1
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modTime time.Time
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xlMeta xlMetaV1
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expectedErr error
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}{
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{
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metaArr: xs,
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modTime: now,
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xlMeta: x1,
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expectedErr: nil,
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},
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{
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metaArr: invalidXS,
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modTime: now,
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xlMeta: invalidX1,
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expectedErr: errors.New("No valid xl.json present"),
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},
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}
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for i, test := range testCases {
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xlMeta, err := pickValidXLMeta(test.metaArr, test.modTime)
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if test.expectedErr != nil {
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if errorCause(err).Error() != test.expectedErr.Error() {
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t.Errorf("Test %d: Expected to fail with %v but received %v",
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i+1, test.expectedErr, err)
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}
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} else {
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if !isXLMetaSimilar(xlMeta, test.xlMeta) {
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t.Errorf("Test %d: Expected %v but received %v",
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i+1, test.xlMeta, xlMeta)
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}
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}
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}
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}
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