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moby--moby/image/image_test.go

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package image
import (
"encoding/json"
"sort"
"strings"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
const sampleImageJSON = `{
"architecture": "amd64",
"os": "linux",
"config": {},
"rootfs": {
"type": "layers",
"diff_ids": []
}
}`
func TestNewFromJSON(t *testing.T) {
img, err := NewFromJSON([]byte(sampleImageJSON))
require.NoError(t, err)
assert.Equal(t, sampleImageJSON, string(img.RawJSON()))
}
func TestNewFromJSONWithInvalidJSON(t *testing.T) {
_, err := NewFromJSON([]byte("{}"))
assert.EqualError(t, err, "invalid image JSON, no RootFS key")
}
func TestMarshalKeyOrder(t *testing.T) {
b, err := json.Marshal(&Image{
V1Image: V1Image{
Comment: "a",
Author: "b",
Architecture: "c",
},
})
assert.NoError(t, err)
expectedOrder := []string{"architecture", "author", "comment"}
var indexes []int
for _, k := range expectedOrder {
indexes = append(indexes, strings.Index(string(b), k))
}
if !sort.IntsAreSorted(indexes) {
t.Fatal("invalid key order in JSON: ", string(b))
}
}