minio/xl-v1_test.go

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/*
* Minio Cloud Storage, (C) 2016 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 main
import (
"os"
"path/filepath"
"testing"
)
// Collection of disks verbatim used for tests.
var disks = []string{
"/mnt/backend1",
"/mnt/backend2",
"/mnt/backend3",
"/mnt/backend4",
"/mnt/backend5",
"/mnt/backend6",
"/mnt/backend7",
"/mnt/backend8",
"/mnt/backend9",
"/mnt/backend10",
"/mnt/backend11",
"/mnt/backend12",
"/mnt/backend13",
"/mnt/backend14",
"/mnt/backend15",
"/mnt/backend16",
}
// Tests all the expected input disks for function checkSufficientDisks.
func TestCheckSufficientDisks(t *testing.T) {
// List of test cases fo sufficient disk verification.
testCases := []struct {
disks []string
expectedErr error
}{
// Even number of disks '6'.
{
disks[0:6],
nil,
},
// Even number of disks '12'.
{
disks[0:12],
nil,
},
// Even number of disks '16'.
{
disks[0:16],
nil,
},
// Larger than maximum number of disks > 16.
{
append(disks[0:16], "/mnt/unsupported"),
errXLMaxDisks,
},
// Lesser than minimum number of disks < 6.
{
disks[0:5],
errXLMinDisks,
},
// Odd number of disks, not divisible by '2'.
{
append(disks[0:10], disks[11]),
errXLNumDisks,
},
}
// Validates different variations of input disks.
for i, testCase := range testCases {
if checkSufficientDisks(testCase.disks) != testCase.expectedErr {
t.Errorf("Test %d expected to pass for disks %s", i+1, testCase.disks)
}
}
}
// TestStorageInfo - tests storage info.
func TestStorageInfo(t *testing.T) {
objLayer, fsDirs, err := getXLObjectLayer()
if err != nil {
t.Fatalf("Unable to initialize 'XL' object layer.")
}
// Remove all dirs.
for _, dir := range fsDirs {
defer removeAll(dir)
}
// Get storage info first attempt.
disks16Info := objLayer.StorageInfo()
// This test assumes homogenity between all disks,
// i.e if we loose one disk the effective storage
// usage values is assumed to decrease. If we have
// heterogenous environment this is not true all the time.
if disks16Info.Free <= 0 {
t.Fatalf("Diskinfo total free values should be greater 0")
}
if disks16Info.Total <= 0 {
t.Fatalf("Diskinfo total values should be greater 0")
}
}
// TestNewXL - tests initialization of all input disks
// and constructs a valid `XL` object
func TestNewXL(t *testing.T) {
var nDisks = 16 // Maximum disks.
var erasureDisks []string
for i := 0; i < nDisks; i++ {
// Do not attempt to create this path, the test validates
// so that newFSObjects initializes non existing paths
// and successfully returns initialized object layer.
disk := filepath.Join(os.TempDir(), "minio-"+nextSuffix())
erasureDisks = append(erasureDisks, disk)
defer removeAll(disk)
}
// Initializes all erasure disks
_, err := newXLObjects(erasureDisks)
if err != nil {
t.Fatalf("Unable to initialize erasure, %s", err)
}
}