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coreos-cloudinit_test.go
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coreos-cloudinit_test.go
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package main
import (
"reflect"
"testing"
"github.com/coreos/coreos-cloudinit/initialize"
)
func TestMergeCloudConfig(t *testing.T) {
simplecc := initialize.CloudConfig{
SSHAuthorizedKeys: []string{"abc", "def"},
Hostname: "foobar",
NetworkConfigPath: "/path/somewhere",
NetworkConfig: `{}`,
}
for i, tt := range []struct {
udcc initialize.CloudConfig
mdcc initialize.CloudConfig
want initialize.CloudConfig
}{
{
// If mdcc is empty, udcc should be returned unchanged
simplecc,
initialize.CloudConfig{},
simplecc,
},
{
// If udcc is empty, mdcc should be returned unchanged(overridden)
initialize.CloudConfig{},
simplecc,
simplecc,
},
{
// user-data should override completely in the case of conflicts
simplecc,
initialize.CloudConfig{
Hostname: "meta-hostname",
NetworkConfigPath: "/path/meta",
NetworkConfig: `{"hostname":"test"}`,
},
simplecc,
},
{
// Mixed merge should succeed
initialize.CloudConfig{
SSHAuthorizedKeys: []string{"abc", "def"},
Hostname: "user-hostname",
NetworkConfigPath: "/path/somewhere",
NetworkConfig: `{"hostname":"test"}`,
},
initialize.CloudConfig{
SSHAuthorizedKeys: []string{"woof", "qux"},
Hostname: "meta-hostname",
},
initialize.CloudConfig{
SSHAuthorizedKeys: []string{"abc", "def", "woof", "qux"},
Hostname: "user-hostname",
NetworkConfigPath: "/path/somewhere",
NetworkConfig: `{"hostname":"test"}`,
},
},
{
// Completely non-conflicting merge should be fine
initialize.CloudConfig{
Hostname: "supercool",
},
initialize.CloudConfig{
SSHAuthorizedKeys: []string{"zaphod", "beeblebrox"},
NetworkConfigPath: "/dev/fun",
NetworkConfig: `{"hostname":"test"}`,
},
initialize.CloudConfig{
Hostname: "supercool",
SSHAuthorizedKeys: []string{"zaphod", "beeblebrox"},
NetworkConfigPath: "/dev/fun",
NetworkConfig: `{"hostname":"test"}`,
},
},
{
// Non-mergeable settings in user-data should not be affected
initialize.CloudConfig{
Hostname: "mememe",
ManageEtcHosts: initialize.EtcHosts("lolz"),
},
initialize.CloudConfig{
Hostname: "youyouyou",
NetworkConfigPath: "meta-meta-yo",
NetworkConfig: `{"hostname":"test"}`,
},
initialize.CloudConfig{
Hostname: "mememe",
ManageEtcHosts: initialize.EtcHosts("lolz"),
NetworkConfigPath: "meta-meta-yo",
NetworkConfig: `{"hostname":"test"}`,
},
},
{
// Non-mergeable (unexpected) settings in meta-data are ignored
initialize.CloudConfig{
Hostname: "mememe",
},
initialize.CloudConfig{
ManageEtcHosts: initialize.EtcHosts("lolz"),
NetworkConfigPath: "meta-meta-yo",
NetworkConfig: `{"hostname":"test"}`,
},
initialize.CloudConfig{
Hostname: "mememe",
NetworkConfigPath: "meta-meta-yo",
NetworkConfig: `{"hostname":"test"}`,
},
},
} {
got := mergeCloudConfig(tt.mdcc, tt.udcc)
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("case #%d: mergeCloudConfig mutated CloudConfig unexpectedly:\ngot:\n%s\nwant:\n%s", i, got, tt.want)
}
}
}