This repository was archived by the owner on Mar 30, 2021. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathruntime_test.go
More file actions
460 lines (401 loc) · 10.1 KB
/
runtime_test.go
File metadata and controls
460 lines (401 loc) · 10.1 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
package docker
import (
"fmt"
"github.com/dotcloud/docker/utils"
"io"
"io/ioutil"
"log"
"net"
"os"
"os/user"
"strconv"
"strings"
"sync"
"testing"
"time"
)
const unitTestImageName string = "docker-ut"
const unitTestStoreBase string = "/var/lib/docker/unit-tests"
func nuke(runtime *Runtime) error {
var wg sync.WaitGroup
for _, container := range runtime.List() {
wg.Add(1)
go func(c *Container) {
c.Kill()
wg.Done()
}(container)
}
wg.Wait()
return os.RemoveAll(runtime.root)
}
func layerArchive(tarfile string) (io.Reader, error) {
// FIXME: need to close f somewhere
f, err := os.Open(tarfile)
if err != nil {
return nil, err
}
return f, nil
}
func init() {
// Hack to run sys init during unit testing
if utils.SelfPath() == "/sbin/init" {
SysInit()
return
}
if usr, err := user.Current(); err != nil {
panic(err)
} else if usr.Uid != "0" {
panic("docker tests needs to be run as root")
}
NetworkBridgeIface = "testdockbr0"
// Make it our Store root
runtime, err := NewRuntimeFromDirectory(unitTestStoreBase, false)
if err != nil {
panic(err)
}
// Create the "Server"
srv := &Server{
runtime: runtime,
}
// Retrieve the Image
if err := srv.ImagePull(unitTestImageName, "", "", os.Stdout, utils.NewStreamFormatter(false)); err != nil {
panic(err)
}
}
// FIXME: test that ImagePull(json=true) send correct json output
func newTestRuntime() (*Runtime, error) {
root, err := ioutil.TempDir("", "docker-test")
if err != nil {
return nil, err
}
if err := os.Remove(root); err != nil {
return nil, err
}
if err := utils.CopyDirectory(unitTestStoreBase, root); err != nil {
return nil, err
}
runtime, err := NewRuntimeFromDirectory(root, false)
if err != nil {
return nil, err
}
runtime.UpdateCapabilities(true)
return runtime, nil
}
func GetTestImage(runtime *Runtime) *Image {
imgs, err := runtime.graph.All()
if err != nil {
panic(err)
} else if len(imgs) < 1 {
panic("GASP")
}
return imgs[0]
}
func TestRuntimeCreate(t *testing.T) {
runtime, err := newTestRuntime()
if err != nil {
t.Fatal(err)
}
defer nuke(runtime)
// Make sure we start we 0 containers
if len(runtime.List()) != 0 {
t.Errorf("Expected 0 containers, %v found", len(runtime.List()))
}
builder := NewBuilder(runtime)
container, err := builder.Create(&Config{
Image: GetTestImage(runtime).ID,
Cmd: []string{"ls", "-al"},
},
)
if err != nil {
t.Fatal(err)
}
defer func() {
if err := runtime.Destroy(container); err != nil {
t.Error(err)
}
}()
// Make sure we can find the newly created container with List()
if len(runtime.List()) != 1 {
t.Errorf("Expected 1 container, %v found", len(runtime.List()))
}
// Make sure the container List() returns is the right one
if runtime.List()[0].ID != container.ID {
t.Errorf("Unexpected container %v returned by List", runtime.List()[0])
}
// Make sure we can get the container with Get()
if runtime.Get(container.ID) == nil {
t.Errorf("Unable to get newly created container")
}
// Make sure it is the right container
if runtime.Get(container.ID) != container {
t.Errorf("Get() returned the wrong container")
}
// Make sure Exists returns it as existing
if !runtime.Exists(container.ID) {
t.Errorf("Exists() returned false for a newly created container")
}
// Make sure crete with bad parameters returns an error
_, err = builder.Create(
&Config{
Image: GetTestImage(runtime).ID,
},
)
if err == nil {
t.Fatal("Builder.Create should throw an error when Cmd is missing")
}
_, err = builder.Create(
&Config{
Image: GetTestImage(runtime).ID,
Cmd: []string{},
},
)
if err == nil {
t.Fatal("Builder.Create should throw an error when Cmd is empty")
}
}
func TestDestroy(t *testing.T) {
runtime, err := newTestRuntime()
if err != nil {
t.Fatal(err)
}
defer nuke(runtime)
container, err := NewBuilder(runtime).Create(&Config{
Image: GetTestImage(runtime).ID,
Cmd: []string{"ls", "-al"},
},
)
if err != nil {
t.Fatal(err)
}
// Destroy
if err := runtime.Destroy(container); err != nil {
t.Error(err)
}
// Make sure runtime.Exists() behaves correctly
if runtime.Exists("test_destroy") {
t.Errorf("Exists() returned true")
}
// Make sure runtime.List() doesn't list the destroyed container
if len(runtime.List()) != 0 {
t.Errorf("Expected 0 container, %v found", len(runtime.List()))
}
// Make sure runtime.Get() refuses to return the unexisting container
if runtime.Get(container.ID) != nil {
t.Errorf("Unable to get newly created container")
}
// Make sure the container root directory does not exist anymore
_, err = os.Stat(container.root)
if err == nil || !os.IsNotExist(err) {
t.Errorf("Container root directory still exists after destroy")
}
// Test double destroy
if err := runtime.Destroy(container); err == nil {
// It should have failed
t.Errorf("Double destroy did not fail")
}
}
func TestGet(t *testing.T) {
runtime, err := newTestRuntime()
if err != nil {
t.Fatal(err)
}
defer nuke(runtime)
builder := NewBuilder(runtime)
container1, err := builder.Create(&Config{
Image: GetTestImage(runtime).ID,
Cmd: []string{"ls", "-al"},
},
)
if err != nil {
t.Fatal(err)
}
defer runtime.Destroy(container1)
container2, err := builder.Create(&Config{
Image: GetTestImage(runtime).ID,
Cmd: []string{"ls", "-al"},
},
)
if err != nil {
t.Fatal(err)
}
defer runtime.Destroy(container2)
container3, err := builder.Create(&Config{
Image: GetTestImage(runtime).ID,
Cmd: []string{"ls", "-al"},
},
)
if err != nil {
t.Fatal(err)
}
defer runtime.Destroy(container3)
if runtime.Get(container1.ID) != container1 {
t.Errorf("Get(test1) returned %v while expecting %v", runtime.Get(container1.ID), container1)
}
if runtime.Get(container2.ID) != container2 {
t.Errorf("Get(test2) returned %v while expecting %v", runtime.Get(container2.ID), container2)
}
if runtime.Get(container3.ID) != container3 {
t.Errorf("Get(test3) returned %v while expecting %v", runtime.Get(container3.ID), container3)
}
}
func findAvailalblePort(runtime *Runtime, port int) (*Container, error) {
strPort := strconv.Itoa(port)
container, err := NewBuilder(runtime).Create(&Config{
Image: GetTestImage(runtime).ID,
Cmd: []string{"sh", "-c", "echo well hello there | nc -l -p " + strPort},
PortSpecs: []string{strPort},
},
)
if err != nil {
return nil, err
}
if err := container.Start(); err != nil {
if strings.Contains(err.Error(), "address already in use") {
return nil, nil
}
return nil, err
}
return container, nil
}
// Run a container with a TCP port allocated, and test that it can receive connections on localhost
func TestAllocatePortLocalhost(t *testing.T) {
runtime, err := newTestRuntime()
if err != nil {
t.Fatal(err)
}
port := 5554
var container *Container
for {
port += 1
log.Println("Trying port", port)
t.Log("Trying port", port)
container, err = findAvailalblePort(runtime, port)
if container != nil {
break
}
if err != nil {
t.Fatal(err)
}
log.Println("Port", port, "already in use")
t.Log("Port", port, "already in use")
}
defer container.Kill()
setTimeout(t, "Waiting for the container to be started timed out", 2*time.Second, func() {
for {
if container.State.Running {
break
}
time.Sleep(10 * time.Millisecond)
}
})
conn, err := net.Dial("tcp",
fmt.Sprintf(
"localhost:%s", container.NetworkSettings.PortMapping[strconv.Itoa(port)],
),
)
if err != nil {
t.Fatal(err)
}
defer conn.Close()
output, err := ioutil.ReadAll(conn)
if err != nil {
t.Fatal(err)
}
if string(output) != "well hello there\n" {
t.Fatalf("Received wrong output from network connection: should be '%s', not '%s'",
"well hello there\n",
string(output),
)
}
container.Wait()
}
func TestRestore(t *testing.T) {
root, err := ioutil.TempDir("", "docker-test")
if err != nil {
t.Fatal(err)
}
if err := os.Remove(root); err != nil {
t.Fatal(err)
}
if err := utils.CopyDirectory(unitTestStoreBase, root); err != nil {
t.Fatal(err)
}
runtime1, err := NewRuntimeFromDirectory(root, false)
if err != nil {
t.Fatal(err)
}
builder := NewBuilder(runtime1)
// Create a container with one instance of docker
container1, err := builder.Create(&Config{
Image: GetTestImage(runtime1).ID,
Cmd: []string{"ls", "-al"},
},
)
if err != nil {
t.Fatal(err)
}
defer runtime1.Destroy(container1)
// Create a second container meant to be killed
container2, err := builder.Create(&Config{
Image: GetTestImage(runtime1).ID,
Cmd: []string{"/bin/cat"},
OpenStdin: true,
},
)
if err != nil {
t.Fatal(err)
}
defer runtime1.Destroy(container2)
// Start the container non blocking
if err := container2.Start(); err != nil {
t.Fatal(err)
}
if !container2.State.Running {
t.Fatalf("Container %v should appear as running but isn't", container2.ID)
}
// Simulate a crash/manual quit of dockerd: process dies, states stays 'Running'
cStdin, _ := container2.StdinPipe()
cStdin.Close()
if err := container2.WaitTimeout(2 * time.Second); err != nil {
t.Fatal(err)
}
container2.State.Running = true
container2.ToDisk()
if len(runtime1.List()) != 2 {
t.Errorf("Expected 2 container, %v found", len(runtime1.List()))
}
if err := container1.Run(); err != nil {
t.Fatal(err)
}
if !container2.State.Running {
t.Fatalf("Container %v should appear as running but isn't", container2.ID)
}
// Here are are simulating a docker restart - that is, reloading all containers
// from scratch
runtime2, err := NewRuntimeFromDirectory(root, false)
if err != nil {
t.Fatal(err)
}
defer nuke(runtime2)
if len(runtime2.List()) != 2 {
t.Errorf("Expected 2 container, %v found", len(runtime2.List()))
}
runningCount := 0
for _, c := range runtime2.List() {
if c.State.Running {
t.Errorf("Running container found: %v (%v)", c.ID, c.Path)
runningCount++
}
}
if runningCount != 0 {
t.Fatalf("Expected 0 container alive, %d found", runningCount)
}
container3 := runtime2.Get(container1.ID)
if container3 == nil {
t.Fatal("Unable to Get container")
}
if err := container3.Run(); err != nil {
t.Fatal(err)
}
container2.State.Running = false
}