202 lines
6.5 KiB
Go
202 lines
6.5 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2015, 2016, 2017 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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"context"
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"reflect"
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"testing"
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)
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// Tests caclculating disk count.
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func TestDiskCount(t *testing.T) {
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testCases := []struct {
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disks []StorageAPI
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diskCount int
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}{
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// Test case - 1
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{
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disks: []StorageAPI{&xlStorage{}, &xlStorage{}, &xlStorage{}, &xlStorage{}},
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diskCount: 4,
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},
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// Test case - 2
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{
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disks: []StorageAPI{nil, &xlStorage{}, &xlStorage{}, &xlStorage{}},
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diskCount: 3,
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},
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}
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for i, testCase := range testCases {
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cdiskCount := diskCount(testCase.disks)
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if cdiskCount != testCase.diskCount {
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t.Errorf("Test %d: Expected %d, got %d", i+1, testCase.diskCount, cdiskCount)
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}
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}
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}
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// Test for reduceErrs, reduceErr reduces collection
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// of errors into a single maximal error with in the list.
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func TestReduceErrs(t *testing.T) {
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// List all of all test cases to validate various cases of reduce errors.
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testCases := []struct {
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errs []error
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ignoredErrs []error
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err error
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}{
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// Validate if have reduced properly.
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{[]error{
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errDiskNotFound,
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errDiskNotFound,
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errDiskFull,
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}, []error{}, errErasureReadQuorum},
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// Validate if have no consensus.
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{[]error{
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errDiskFull,
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errDiskNotFound,
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nil, nil,
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}, []error{}, errErasureReadQuorum},
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// Validate if have consensus and errors ignored.
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{[]error{
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errVolumeNotFound,
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errVolumeNotFound,
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errVolumeNotFound,
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errVolumeNotFound,
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errVolumeNotFound,
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errDiskNotFound,
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errDiskNotFound,
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}, []error{errDiskNotFound}, errVolumeNotFound},
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{[]error{}, []error{}, errErasureReadQuorum},
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{[]error{errFileNotFound, errFileNotFound, errFileNotFound,
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errFileNotFound, errFileNotFound, nil, nil, nil, nil, nil},
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nil, nil},
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}
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// Validates list of all the testcases for returning valid errors.
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for i, testCase := range testCases {
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gotErr := reduceReadQuorumErrs(context.Background(), testCase.errs, testCase.ignoredErrs, 5)
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if gotErr != testCase.err {
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t.Errorf("Test %d : expected %s, got %s", i+1, testCase.err, gotErr)
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}
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gotNewErr := reduceWriteQuorumErrs(context.Background(), testCase.errs, testCase.ignoredErrs, 6)
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if gotNewErr != errErasureWriteQuorum {
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t.Errorf("Test %d : expected %s, got %s", i+1, errErasureWriteQuorum, gotErr)
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}
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}
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}
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// TestHashOrder - test order of ints in array
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func TestHashOrder(t *testing.T) {
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testCases := []struct {
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objectName string
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hashedOrder []int
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}{
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// cases which should pass the test.
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// passing in valid object name.
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{"object", []int{14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}},
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{"The Shining Script <v1>.pdf", []int{16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}},
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{"Cost Benefit Analysis (2009-2010).pptx", []int{15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}},
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{"117Gn8rfHL2ACARPAhaFd0AGzic9pUbIA/5OCn5A", []int{3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2}},
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{"SHØRT", []int{11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}},
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{"There are far too many object names, and far too few bucket names!", []int{15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}},
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{"a/b/c/", []int{3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2}},
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{"/a/b/c", []int{6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5}},
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{string([]byte{0xff, 0xfe, 0xfd}), []int{15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}},
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}
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// Tests hashing order to be consistent.
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for i, testCase := range testCases {
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hashedOrder := hashOrder(testCase.objectName, 16)
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if !reflect.DeepEqual(testCase.hashedOrder, hashedOrder) {
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t.Errorf("Test case %d: Expected \"%v\" but failed \"%v\"", i+1, testCase.hashedOrder, hashedOrder)
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}
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}
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// Tests hashing order to fail for when order is '-1'.
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if hashedOrder := hashOrder("This will fail", -1); hashedOrder != nil {
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t.Errorf("Test: Expect \"nil\" but failed \"%#v\"", hashedOrder)
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}
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if hashedOrder := hashOrder("This will fail", 0); hashedOrder != nil {
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t.Errorf("Test: Expect \"nil\" but failed \"%#v\"", hashedOrder)
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}
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}
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func TestShuffleDisks(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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nDisks := 16
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disks, err := getRandomDisks(nDisks)
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if err != nil {
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t.Fatal(err)
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}
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objLayer, _, err := initObjectLayer(ctx, mustGetZoneEndpoints(disks...))
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if err != nil {
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removeRoots(disks)
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t.Fatal(err)
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}
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defer removeRoots(disks)
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z := objLayer.(*erasureServerPools)
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testShuffleDisks(t, z)
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}
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// Test shuffleDisks which returns shuffled slice of disks for their actual distribution.
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func testShuffleDisks(t *testing.T, z *erasureServerPools) {
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disks := z.serverPools[0].GetDisks(0)()
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distribution := []int{16, 14, 12, 10, 8, 6, 4, 2, 1, 3, 5, 7, 9, 11, 13, 15}
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shuffledDisks := shuffleDisks(disks, distribution)
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// From the "distribution" above you can notice that:
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// 1st data block is in the 9th disk (i.e distribution index 8)
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// 2nd data block is in the 8th disk (i.e distribution index 7) and so on.
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if shuffledDisks[0] != disks[8] ||
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shuffledDisks[1] != disks[7] ||
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shuffledDisks[2] != disks[9] ||
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shuffledDisks[3] != disks[6] ||
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shuffledDisks[4] != disks[10] ||
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shuffledDisks[5] != disks[5] ||
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shuffledDisks[6] != disks[11] ||
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shuffledDisks[7] != disks[4] ||
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shuffledDisks[8] != disks[12] ||
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shuffledDisks[9] != disks[3] ||
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shuffledDisks[10] != disks[13] ||
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shuffledDisks[11] != disks[2] ||
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shuffledDisks[12] != disks[14] ||
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shuffledDisks[13] != disks[1] ||
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shuffledDisks[14] != disks[15] ||
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shuffledDisks[15] != disks[0] {
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t.Errorf("shuffleDisks returned incorrect order.")
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}
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}
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// TestEvalDisks tests the behavior of evalDisks
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func TestEvalDisks(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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nDisks := 16
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disks, err := getRandomDisks(nDisks)
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if err != nil {
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t.Fatal(err)
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}
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objLayer, _, err := initObjectLayer(ctx, mustGetZoneEndpoints(disks...))
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if err != nil {
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removeRoots(disks)
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t.Fatal(err)
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}
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defer removeRoots(disks)
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z := objLayer.(*erasureServerPools)
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testShuffleDisks(t, z)
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}
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