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Sort arguments before joining them, for reproducible return string

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This commit is contained in:
lalyos 2018-05-14 17:53:31 +02:00
parent 0ba80021c5
commit 5308957dbc
2 changed files with 23 additions and 10 deletions
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21
cmd/kubeadm/app/util/arguments.go
View File

@ -18,17 +18,32 @@ package util
import (
"fmt"
"sort"
"strings"
)
// BuildArgumentListFromMap takes two string-string maps, one with the base arguments and one with optional override arguments
// BuildArgumentListFromMap takes two string-string maps, one with the base arguments and one
// with optional override arguments. In the return list override arguments will precede base
// arguments
func BuildArgumentListFromMap(baseArguments map[string]string, overrideArguments map[string]string) []string {
var command []string
for k, v := range overrideArguments {
var keys []string
for k := range overrideArguments {
keys = append(keys, k)
}
sort.Strings(keys)
for _, k := range keys {
v := overrideArguments[k]
// values of "" are allowed as well
command = append(command, fmt.Sprintf("--%s=%s", k, v))
}
for k, v := range baseArguments {
keys = []string{}
for k := range baseArguments {
keys = append(keys, k)
}
sort.Strings(keys)
for _, k := range keys {
v := baseArguments[k]
if _, overrideExists := overrideArguments[k]; !overrideExists {
command = append(command, fmt.Sprintf("--%s=%s", k, v))
}

12
cmd/kubeadm/app/util/arguments_test.go
View File

@ -39,8 +39,8 @@ func TestBuildArgumentListFromMap(t *testing.T) {
},
expected: []string{
"--admission-control=NamespaceLifecycle,LimitRanger",
"--insecure-bind-address=127.0.0.1",
"--allow-privileged=true",
"--insecure-bind-address=127.0.0.1",
},
},
{ // add an argument that is not in base
@ -53,8 +53,8 @@ func TestBuildArgumentListFromMap(t *testing.T) {
},
expected: []string{
"--admission-control=NamespaceLifecycle,LimitRanger",
"--insecure-bind-address=127.0.0.1",
"--allow-privileged=true",
"--insecure-bind-address=127.0.0.1",
},
},
{ // allow empty strings in base
@ -68,8 +68,8 @@ func TestBuildArgumentListFromMap(t *testing.T) {
},
expected: []string{
"--admission-control=NamespaceLifecycle,LimitRanger",
"--insecure-bind-address=127.0.0.1",
"--allow-privileged=true",
"--insecure-bind-address=127.0.0.1",
"--something-that-allows-empty-string=",
},
},
@ -85,17 +85,15 @@ func TestBuildArgumentListFromMap(t *testing.T) {
},
expected: []string{
"--admission-control=NamespaceLifecycle,LimitRanger",
"--insecure-bind-address=127.0.0.1",
"--allow-privileged=true",
"--something-that-allows-empty-string=",
"--allow-privileged=true",
"--insecure-bind-address=127.0.0.1",
},
},
}
for _, rt := range tests {
actual := BuildArgumentListFromMap(rt.base, rt.overrides)
sort.Strings(actual)
sort.Strings(rt.expected)
if !reflect.DeepEqual(actual, rt.expected) {
t.Errorf("failed BuildArgumentListFromMap:\nexpected:\n%v\nsaw:\n%v", rt.expected, actual)
}