1/*
2Copyright 2019 The Kubernetes Authors.
3
4Licensed under the Apache License, Version 2.0 (the "License");
5you may not use this file except in compliance with the License.
6You may obtain a copy of the License at
7
8    http://www.apache.org/licenses/LICENSE-2.0
9
10Unless required by applicable law or agreed to in writing, software
11distributed under the License is distributed on an "AS IS" BASIS,
12WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13See the License for the specific language governing permissions and
14limitations under the License.
15*/
16
17package fs
18
19import (
20	"fmt"
21	"io/ioutil"
22	"os"
23
24	"testing"
25
26	"k8s.io/apimachinery/pkg/api/resource"
27)
28
29func TestDiskUsage(t *testing.T) {
30
31	dir1, err := ioutil.TempDir("", "dir_1")
32	if err != nil {
33		t.Fatalf("TestDiskUsage failed: %s", err.Error())
34	}
35	defer os.RemoveAll(dir1)
36
37	tmpfile1, err := ioutil.TempFile(dir1, "test")
38	if _, err = tmpfile1.WriteString("just for testing"); err != nil {
39		t.Fatalf("TestDiskUsage failed: %s", err.Error())
40	}
41	dir2, err := ioutil.TempDir(dir1, "dir_2")
42	if err != nil {
43		t.Fatalf("TestDiskUsage failed: %s", err.Error())
44	}
45	tmpfile2, err := ioutil.TempFile(dir2, "test")
46	if _, err = tmpfile2.WriteString("just for testing"); err != nil {
47		t.Fatalf("TestDiskUsage failed: %s", err.Error())
48	}
49
50	dirInfo1, err := os.Lstat(dir1)
51	if err != nil {
52		t.Fatalf("TestDiskUsage failed: %s", err.Error())
53	}
54	dirInfo2, err := os.Lstat(dir2)
55	if err != nil {
56		t.Fatalf("TestDiskUsage failed: %s", err.Error())
57	}
58	file1 := tmpfile1.Name()
59	file2 := tmpfile2.Name()
60	fileInfo1, err := os.Lstat(file1)
61	if err != nil {
62		t.Fatalf("TestDiskUsage failed: %s", err.Error())
63	}
64	fileInfo2, err := os.Lstat(file2)
65	if err != nil {
66		t.Fatalf("TestDiskUsage failed: %s", err.Error())
67	}
68	total := dirInfo1.Size() + dirInfo2.Size() + fileInfo1.Size() + fileInfo2.Size()
69
70	usage, err := DiskUsage(dir1)
71	if err != nil {
72		t.Fatalf("TestDiskUsage failed: %s", err.Error())
73	}
74	size, err := resource.ParseQuantity(fmt.Sprintf("%d", usage.Bytes))
75	if err != nil {
76		t.Fatalf("TestDiskUsage failed: %s", err.Error())
77	}
78
79	used, err := resource.ParseQuantity(fmt.Sprintf("%d", total))
80	if err != nil {
81		t.Fatalf("TestDiskUsage failed: %s", err.Error())
82	}
83	if size.Cmp(used) != 0 {
84		t.Fatalf("TestDiskUsage failed: expected 0, got %d", size.Cmp(used))
85	}
86}
87
88func TestInfo(t *testing.T) {
89	dir1, err := ioutil.TempDir("", "dir_1")
90	if err != nil {
91		t.Fatalf("TestInfo failed: %s", err.Error())
92	}
93	defer os.RemoveAll(dir1)
94
95	// should pass for folder path
96	availablebytes, capacity, usage, inodesTotal, inodesFree, inodeUsage, err := Info(dir1)
97	if err != nil {
98		t.Errorf("Info() should not error = %v", err)
99		return
100	}
101	validateInfo(t, availablebytes, capacity, usage, inodesTotal, inodeUsage, inodesFree)
102
103	// should pass for file
104	tmpfile1, err := ioutil.TempFile(dir1, "test")
105	if _, err = tmpfile1.WriteString("just for testing"); err != nil {
106		t.Fatalf("TestInfo failed: %s", err.Error())
107	}
108	availablebytes, capacity, usage, inodesTotal, inodesFree, inodeUsage, err = Info(tmpfile1.Name())
109	validateInfo(t, availablebytes, capacity, usage, inodesTotal, inodeUsage, inodesFree)
110}
111
112func validateInfo(t *testing.T, availablebytes int64, capacity int64, usage int64, inodesTotal int64, inodeUsage int64, inodesFree int64) {
113	// All of these should be greater than zero on a real system
114	if availablebytes <= 0 {
115		t.Errorf("Info() availablebytes should be greater than 0, got %v", availablebytes)
116	}
117	if capacity <= 0 {
118		t.Errorf("Info() capacity should be greater than 0, got %v", capacity)
119	}
120	if usage <= 0 {
121		t.Errorf("Info() got usage should be greater than 0, got %v", usage)
122	}
123
124	// inodes will always be zero for Windows
125	if inodesTotal != 0 {
126		t.Errorf("Info() inodesTotal = %v, want %v", inodeUsage, 0)
127	}
128	if inodesFree != 0 {
129		t.Errorf("Info() inodesFree = %v, want %v", inodesFree, 0)
130	}
131	if inodeUsage != 0 {
132		t.Errorf("Info() inodeUsage = %v, want %v", inodeUsage, 0)
133	}
134}
135