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/*
* Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2017 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package minio
import (
"reflect"
"testing"
)
const (
gb1 = 1024 * 1024 * 1024
gb5 = 5 * gb1
gb5p1 = gb5 + 1
gb10p1 = 2*gb5 + 1
gb10p2 = 2*gb5 + 2
)
func TestPartsRequired(t *testing.T) {
testCases := []struct {
size, ref int64
}{
{0, 0},
{1, 1},
{gb5, 1},
{2 * gb5, 2},
{gb10p1, 3},
{gb10p2, 3},
}
for i, testCase := range testCases {
res := partsRequired(testCase.size)
if res != testCase.ref {
t.Errorf("Test %d - output did not match with reference results", i+1)
}
}
}
func TestCalculateEvenSplits(t *testing.T) {
testCases := []struct {
// input size and source object
size int64
src SourceInfo
// output part-indexes
starts, ends []int64
}{
{0, SourceInfo{start: -1}, nil, nil},
{1, SourceInfo{start: -1}, []int64{0}, []int64{0}},
{1, SourceInfo{start: 0}, []int64{0}, []int64{0}},
{gb1, SourceInfo{start: -1}, []int64{0}, []int64{gb1 - 1}},
{gb5, SourceInfo{start: -1}, []int64{0}, []int64{gb5 - 1}},
// 2 part splits
{gb5p1, SourceInfo{start: -1}, []int64{0, gb5/2 + 1}, []int64{gb5 / 2, gb5}},
{gb5p1, SourceInfo{start: -1}, []int64{0, gb5/2 + 1}, []int64{gb5 / 2, gb5}},
// 3 part splits
{gb10p1, SourceInfo{start: -1},
[]int64{0, gb10p1/3 + 1, 2*gb10p1/3 + 1},
[]int64{gb10p1 / 3, 2 * gb10p1 / 3, gb10p1 - 1}},
{gb10p2, SourceInfo{start: -1},
[]int64{0, gb10p2 / 3, 2 * gb10p2 / 3},
[]int64{gb10p2/3 - 1, 2*gb10p2/3 - 1, gb10p2 - 1}},
}
for i, testCase := range testCases {
resStart, resEnd := calculateEvenSplits(testCase.size, testCase.src)
if !reflect.DeepEqual(testCase.starts, resStart) || !reflect.DeepEqual(testCase.ends, resEnd) {
t.Errorf("Test %d - output did not match with reference results", i+1)
}
}
}
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