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images_test.go
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images_test.go
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package main
import (
"regexp"
"testing"
)
type DotTest struct {
json string
regexps []string
}
type ShortTest struct {
json string
regexps []string
}
type TreeTest struct {
json string
startImage string
noTrunc bool
incr bool
regexps []string
}
func Test_BadJSON(t *testing.T) {
_, err := parseImagesJSON([]byte(` "VirtualSize": 662553464, "Size": 662553464, "RepoTags": [ "<none>:<none>" ], "ParentId": "", "Id": "4c1208b690c68af3476b437e7bc2bcc460f062bda2094d2d8f21a7e70368d358", "Created": 1386114144 }]`))
if err == nil {
t.Error("invalid json did not cause an error")
}
}
func Test_Dot(t *testing.T) {
allMatch := []string{
"(?s)digraph docker {.*}",
`(?m) base \[style=invisible\]`,
}
allRegex := compileRegexps(t, allMatch)
dotTests := []DotTest{
DotTest{
json: `[{ "VirtualSize": 662553464, "Size": 662553464, "RepoTags": [ "<none>:<none>" ], "ParentId": "", "Id": "4c1208b690c68af3476b437e7bc2bcc460f062bda2094d2d8f21a7e70368d358", "Created": 1386114144 }]`,
regexps: []string{
`base -> "4c1208b690c6"`,
},
},
DotTest{
json: `[{ "VirtualSize": 662553464, "Size": 0, "RepoTags": [ "foo:latest" ], "ParentId": "735f5db5626147582d2ae3f2c87be8e5e697c088574c5faaf8d4d1bccab99470", "Id": "c87be8e5e697c735f5db5626147582d2ae3f2088574c5faaf8d4d1bccab99470", "Created": 1386142123 },{ "VirtualSize": 662553464, "Size": 0, "RepoTags": [ "<none>:<none>" ], "ParentId": "4c1208b690c68af3476b437e7bc2bcc460f062bda2094d2d8f21a7e70368d358", "Id": "735f5db5626147582d2ae3f2c87be8e5e697c088574c5faaf8d4d1bccab99470", "Created": 1386142123 },{ "VirtualSize": 662553464, "Size": 662553464, "RepoTags": [ "<none>:<none>" ], "ParentId": "", "Id": "4c1208b690c68af3476b437e7bc2bcc460f062bda2094d2d8f21a7e70368d358", "Created": 1386114144 }]`,
regexps: []string{
`base -> "4c1208b690c6"`,
`"4c1208b690c6" -> "735f5db56261"`,
`"c87be8e5e697" \[label="c87be8e5e697\\nfoo:latest"`,
},
},
}
for _, dotTest := range dotTests {
im, _ := parseImagesJSON([]byte(dotTest.json))
byParent := collectChildren(im)
roots := collectRoots(im)
// TODO: test start image limiting
result := jsonToDot(roots, byParent)
for _, regexp := range allRegex {
if !regexp.MatchString(result) {
t.Fatalf("images dot content '%s' did not match regexp '%s'", result, regexp)
}
}
for _, regexp := range compileRegexps(t, dotTest.regexps) {
if !regexp.MatchString(result) {
t.Fatalf("images dot content '%s' did not match regexp '%s'", result, regexp)
}
}
}
}
func Test_Tree(t *testing.T) {
treeJSON := `[{"VirtualSize":674553464,"Size":2000000,"RepoTags":["foo:latest"],"ParentId":"735f5db5626147582d2ae3f2c87be8e5e697c088574c5faaf8d4d1bccab99470","Id":"c87be8e5e697c735f5db5626147582d2ae3f2088574c5faaf8d4d1bccab99470","Created":1386142123},{"VirtualSize":682553464,"Size":20000000,"RepoTags":["<none>:<none>"],"ParentId":"4c1208b690c68af3476b437e7bc2bcc460f062bda2094d2d8f21a7e70368d358","Id":"626147582d2ae3735f5db5f2c87be8e5e697c088574c5faaf8d4d1bccab99470","Created":1386142123},{"VirtualSize":712553464,"Size":30000000,"RepoTags":["base:latest"],"ParentId":"626147582d2ae3735f5db5f2c87be8e5e697c088574c5faaf8d4d1bccab99470","Id":"574c5faaf8d4d1bccab994626147582d2ae3735f5db5f2c87be8e5e697c08870","Created":1386142123},{"VirtualSize":752553464,"Size":40000000,"RepoTags":["<none>:<none>"],"ParentId":"574c5faaf8d4d1bccab994626147582d2ae3735f5db5f2c87be8e5e697c08870","Id":"aaf8d4d1bccab994574c5f626147582d2ae3735f5db5f2c87be8e5e697c08870","Created":1386142123},{"VirtualSize":672553464,"Size":10000000,"RepoTags":["<none>:<none>"],"ParentId":"4c1208b690c68af3476b437e7bc2bcc460f062bda2094d2d8f21a7e70368d358","Id":"735f5db5626147582d2ae3f2c87be8e5e697c088574c5faaf8d4d1bccab99470","Created":1386142123},{"VirtualSize":662553464,"Size":662553464,"RepoTags":["<none>:<none>"],"ParentId":"","Id":"4c1208b690c68af3476b437e7bc2bcc460f062bda2094d2d8f21a7e70368d358","Created":1386114144}]`
treeTests := []TreeTest{
TreeTest{
json: treeJSON,
startImage: "",
noTrunc: false,
incr: false,
regexps: []string{
`(?m)└─4c1208b690c6 Virtual Size: 662.6 MB`,
`(?m) └─735f5db56261 Virtual Size: 672.6 MB`,
`(?m) └─c87be8e5e697 Virtual Size: 674.6 MB Tags: foo:latest`,
},
},
TreeTest{
json: treeJSON,
startImage: "",
noTrunc: false,
incr: true,
regexps: []string{
`(?m)└─4c1208b690c6 Virtual Size: 662.6 MB`,
`(?m) └─735f5db56261 Virtual Size: 10.0 MB`,
`(?m) └─c87be8e5e697 Virtual Size: 2.0 MB Tags: foo:latest`,
},
},
TreeTest{
json: treeJSON,
startImage: "626147582d2a",
noTrunc: false,
incr: false,
regexps: []string{
`(?m)└─626147582d2a`,
`(?m) └─574c5faaf8d4`,
`(?m) └─aaf8d4d1bcca`,
},
},
TreeTest{
json: treeJSON,
startImage: "base:latest",
noTrunc: true,
incr: false,
regexps: []string{
`(?m)└─574c5faaf8d4d1bccab994626147582d2ae3735f5db5f2c87be8e5e697c08870`,
`(?m) └─aaf8d4d1bccab994574c5f626147582d2ae3735f5db5f2c87be8e5e697c08870`,
},
},
}
for _, treeTest := range treeTests {
im, _ := parseImagesJSON([]byte(treeTest.json))
byParent := collectChildren(im)
var roots []Image
if len(treeTest.startImage) > 0 {
startImage, _ := findStartImage(treeTest.startImage, im)
startImage.ParentId = ""
roots = []Image{*startImage}
} else {
roots = collectRoots(im)
}
result := jsonToTree(roots, byParent, treeTest.noTrunc, treeTest.incr)
for _, regexp := range compileRegexps(t, treeTest.regexps) {
if !regexp.MatchString(result) {
t.Fatalf("images tree content '%s' did not match regexp '%s'", result, regexp)
}
}
}
}
func Test_Short(t *testing.T) {
shortJSON := `[ { "VirtualSize": 662553464, "Size": 0, "RepoTags": [ "foo:latest" ], "ParentId": "735f5db5626147582d2ae3f2c87be8e5e697c088574c5faaf8d4d1bccab99470", "Id": "c87be8e5e697c735f5db5626147582d2ae3f2088574c5faaf8d4d1bccab99470", "Created": 1386142123 }, { "VirtualSize": 682553464, "Size": 0, "RepoTags": [ "foo:1.0" ], "ParentId": "4c1208b690c68af3476b437e7bc2bcc460f062bda2094d2d8f21a7e70368d358", "Id": "626147582d2ae3735f5db5f2c87be8e5e697c088574c5faaf8d4d1bccab99470", "Created": 1386142123 }, { "VirtualSize": 712553464, "Size": 0, "RepoTags": [ "foo:2.0" ], "ParentId": "626147582d2ae3735f5db5f2c87be8e5e697c088574c5faaf8d4d1bccab99470", "Id": "574c5faaf8d4d1bccab994626147582d2ae3735f5db5f2c87be8e5e697c08870", "Created": 1386142123 }, { "VirtualSize": 752553464, "Size": 0, "RepoTags": [ "private.repo.com:5000:latest" ], "ParentId": "574c5faaf8d4d1bccab994626147582d2ae3735f5db5f2c87be8e5e697c08870", "Id": "aaf8d4d1bccab994574c5f626147582d2ae3735f5db5f2c87be8e5e697c08870", "Created": 1386142123 }, { "VirtualSize": 662553464, "Size": 0, "RepoTags": [ "<none>:<none>" ], "ParentId": "4c1208b690c68af3476b437e7bc2bcc460f062bda2094d2d8f21a7e70368d358", "Id": "735f5db5626147582d2ae3f2c87be8e5e697c088574c5faaf8d4d1bccab99470", "Created": 1386142123 }, { "VirtualSize": 662553464, "Size": 662553464, "RepoTags": [ "<none>:<none>" ], "ParentId": "", "Id": "4c1208b690c68af3476b437e7bc2bcc460f062bda2094d2d8f21a7e70368d358", "Created": 1386114144 } ]`
shortTests := []ShortTest{
ShortTest{
json: shortJSON,
regexps: []string{
`(?m)foo: latest, 1.0, 2.0`,
`(?m)private.repo.com:5000: latest`,
},
},
}
for _, shortTest := range shortTests {
im, _ := parseImagesJSON([]byte(shortTest.json))
result := jsonToShort(im)
for _, regexp := range compileRegexps(t, shortTest.regexps) {
if !regexp.MatchString(result) {
t.Fatalf("images short content '%s' did not match regexp '%s'", result, regexp)
}
}
}
}
func compileRegexps(t *testing.T, regexpStrings []string) []*regexp.Regexp {
compiledRegexps := []*regexp.Regexp{}
for _, regexpString := range regexpStrings {
regexp, err := regexp.Compile(regexpString)
if err != nil {
t.Errorf("Error in regex string '%s': %s", regexpString, err)
}
compiledRegexps = append(compiledRegexps, regexp)
}
return compiledRegexps
}