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helm/pkg/plugin/plugin_test.go

278 lines
6.7 KiB

/*
Copyright The Helm Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package plugin // import "helm.sh/helm/v3/pkg/plugin"
import (
"os"
"path/filepath"
"reflect"
"runtime"
"testing"
"helm.sh/helm/v3/pkg/cli"
)
func checkCommand(p *Plugin, extraArgs []string, osStrCmp string, t *testing.T) {
cmd, args, err := p.PrepareCommand(extraArgs)
if err != nil {
t.Errorf(err.Error())
}
if cmd != "echo" {
t.Errorf("Expected echo, got %q", cmd)
}
if l := len(args); l != 5 {
t.Errorf("expected 5 args, got %d", l)
}
expect := []string{"-n", osStrCmp, "--debug", "--foo", "bar"}
for i := 0; i < len(args); i++ {
if expect[i] != args[i] {
t.Errorf("Expected arg=%q, got %q", expect[i], args[i])
}
}
// Test with IgnoreFlags. This should omit --debug, --foo, bar
p.Metadata.IgnoreFlags = true
cmd, args, err = p.PrepareCommand(extraArgs)
if err != nil {
t.Errorf(err.Error())
}
if cmd != "echo" {
t.Errorf("Expected echo, got %q", cmd)
}
if l := len(args); l != 2 {
t.Errorf("expected 2 args, got %d", l)
}
expect = []string{"-n", osStrCmp}
for i := 0; i < len(args); i++ {
if expect[i] != args[i] {
t.Errorf("Expected arg=%q, got %q", expect[i], args[i])
}
}
}
func TestPrepareCommand(t *testing.T) {
p := &Plugin{
Dir: "/tmp", // Unused
Metadata: &Metadata{
Name: "test",
Command: "echo -n foo",
},
}
argv := []string{"--debug", "--foo", "bar"}
checkCommand(p, argv, "foo", t)
}
func TestPlatformPrepareCommand(t *testing.T) {
p := &Plugin{
Dir: "/tmp", // Unused
Metadata: &Metadata{
Name: "test",
Command: "echo -n os-arch",
PlatformCommand: []PlatformCommand{
{OperatingSystem: "linux", Architecture: "i386", Command: "echo -n linux-i386"},
{OperatingSystem: "linux", Architecture: "amd64", Command: "echo -n linux-amd64"},
{OperatingSystem: "windows", Architecture: "amd64", Command: "echo -n win-64"},
},
},
}
var osStrCmp string
os := runtime.GOOS
arch := runtime.GOARCH
if os == "linux" && arch == "i386" {
osStrCmp = "linux-i386"
} else if os == "linux" && arch == "amd64" {
osStrCmp = "linux-amd64"
} else if os == "windows" && arch == "amd64" {
osStrCmp = "win-64"
} else {
osStrCmp = "os-arch"
}
argv := []string{"--debug", "--foo", "bar"}
checkCommand(p, argv, osStrCmp, t)
}
func TestPartialPlatformPrepareCommand(t *testing.T) {
p := &Plugin{
Dir: "/tmp", // Unused
Metadata: &Metadata{
Name: "test",
Command: "echo -n os-arch",
PlatformCommand: []PlatformCommand{
{OperatingSystem: "linux", Architecture: "i386", Command: "echo -n linux-i386"},
{OperatingSystem: "windows", Architecture: "amd64", Command: "echo -n win-64"},
},
},
}
var osStrCmp string
os := runtime.GOOS
arch := runtime.GOARCH
if os == "linux" {
osStrCmp = "linux-i386"
} else if os == "windows" && arch == "amd64" {
osStrCmp = "win-64"
} else {
osStrCmp = "os-arch"
}
argv := []string{"--debug", "--foo", "bar"}
checkCommand(p, argv, osStrCmp, t)
}
func TestNoPrepareCommand(t *testing.T) {
p := &Plugin{
Dir: "/tmp", // Unused
Metadata: &Metadata{
Name: "test",
},
}
argv := []string{"--debug", "--foo", "bar"}
_, _, err := p.PrepareCommand(argv)
if err == nil {
t.Errorf("Expected error to be returned")
}
}
func TestNoMatchPrepareCommand(t *testing.T) {
p := &Plugin{
Dir: "/tmp", // Unused
Metadata: &Metadata{
Name: "test",
PlatformCommand: []PlatformCommand{
{OperatingSystem: "no-os", Architecture: "amd64", Command: "echo -n linux-i386"},
},
},
}
argv := []string{"--debug", "--foo", "bar"}
if _, _, err := p.PrepareCommand(argv); err == nil {
t.Errorf("Expected error to be returned")
}
}
func TestLoadDir(t *testing.T) {
dirname := "testdata/plugdir/hello"
plug, err := LoadDir(dirname)
if err != nil {
t.Fatalf("error loading Hello plugin: %s", err)
}
if plug.Dir != dirname {
t.Errorf("Expected dir %q, got %q", dirname, plug.Dir)
}
expect := &Metadata{
Name: "hello",
Version: "0.1.0",
Usage: "usage",
Description: "description",
Command: "$HELM_PLUGIN_SELF/hello.sh",
IgnoreFlags: true,
Hooks: map[string]string{
Install: "echo installing...",
},
}
if !reflect.DeepEqual(expect, plug.Metadata) {
t.Errorf("Expected plugin metadata %v, got %v", expect, plug.Metadata)
}
}
func TestDownloader(t *testing.T) {
dirname := "testdata/plugdir/downloader"
plug, err := LoadDir(dirname)
if err != nil {
t.Fatalf("error loading Hello plugin: %s", err)
}
if plug.Dir != dirname {
t.Errorf("Expected dir %q, got %q", dirname, plug.Dir)
}
expect := &Metadata{
Name: "downloader",
Version: "1.2.3",
Usage: "usage",
Description: "download something",
Command: "echo Hello",
Downloaders: []Downloaders{
{
Protocols: []string{"myprotocol", "myprotocols"},
Command: "echo Download",
},
},
}
if !reflect.DeepEqual(expect, plug.Metadata) {
t.Errorf("Expected metadata %v, got %v", expect, plug.Metadata)
}
}
func TestLoadAll(t *testing.T) {
// Verify that empty dir loads:
if plugs, err := LoadAll("testdata"); err != nil {
t.Fatalf("error loading dir with no plugins: %s", err)
} else if len(plugs) > 0 {
t.Fatalf("expected empty dir to have 0 plugins")
}
basedir := "testdata/plugdir"
plugs, err := LoadAll(basedir)
if err != nil {
t.Fatalf("Could not load %q: %s", basedir, err)
}
if l := len(plugs); l != 3 {
t.Fatalf("expected 3 plugins, found %d", l)
}
if plugs[0].Metadata.Name != "downloader" {
t.Errorf("Expected first plugin to be echo, got %q", plugs[0].Metadata.Name)
}
if plugs[1].Metadata.Name != "echo" {
t.Errorf("Expected first plugin to be echo, got %q", plugs[0].Metadata.Name)
}
if plugs[2].Metadata.Name != "hello" {
t.Errorf("Expected second plugin to be hello, got %q", plugs[1].Metadata.Name)
}
}
func TestSetupEnv(t *testing.T) {
name := "pequod"
base := filepath.Join("testdata/helmhome/helm/plugins", name)
s := &cli.EnvSettings{
PluginsDirectory: "testdata/helmhome/helm/plugins",
}
SetupPluginEnv(s, name, base)
for _, tt := range []struct {
name, expect string
}{
{"HELM_PLUGIN_NAME", name},
{"HELM_PLUGIN_DIR", base},
} {
if got := os.Getenv(tt.name); got != tt.expect {
t.Errorf("Expected $%s=%q, got %q", tt.name, tt.expect, got)
}
}
}