packer-cn/packer/plugin/discover_test.go

137 lines
3.1 KiB
Go

package plugin
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"runtime"
"testing"
pluginsdk "github.com/hashicorp/packer/packer-plugin-sdk/plugin"
)
func newConfig() Config {
var conf Config
conf.PluginMinPort = 10000
conf.PluginMaxPort = 25000
return conf
}
func TestDiscoverReturnsIfMagicCookieSet(t *testing.T) {
config := newConfig()
os.Setenv(pluginsdk.MagicCookieKey, pluginsdk.MagicCookieValue)
defer os.Unsetenv(pluginsdk.MagicCookieKey)
err := config.Discover()
if err != nil {
t.Fatalf("Should not have errored: %s", err)
}
if len(config.builders) != 0 {
t.Fatalf("Should not have tried to find builders")
}
}
func TestEnvVarPackerPluginPath(t *testing.T) {
// Create a temporary directory to store plugins in
dir, _, cleanUpFunc, err := generateFakePlugins("custom_plugin_dir",
[]string{"packer-provisioner-partyparrot"})
if err != nil {
t.Fatalf("Error creating fake custom plugins: %s", err)
}
defer cleanUpFunc()
// Add temp dir to path.
os.Setenv("PACKER_PLUGIN_PATH", dir)
defer os.Unsetenv("PACKER_PLUGIN_PATH")
config := newConfig()
err = config.Discover()
if err != nil {
t.Fatalf("Should not have errored: %s", err)
}
if len(config.provisioners) == 0 {
t.Fatalf("Should have found partyparrot provisioner")
}
if _, ok := config.provisioners["partyparrot"]; !ok {
t.Fatalf("Should have found partyparrot provisioner.")
}
}
func TestEnvVarPackerPluginPath_MultiplePaths(t *testing.T) {
// Create a temporary directory to store plugins in
dir, _, cleanUpFunc, err := generateFakePlugins("custom_plugin_dir",
[]string{"packer-provisioner-partyparrot"})
if err != nil {
t.Fatalf("Error creating fake custom plugins: %s", err)
}
defer cleanUpFunc()
pathsep := ":"
if runtime.GOOS == "windows" {
pathsep = ";"
}
// Create a second dir to look in that will be empty
decoyDir, err := ioutil.TempDir("", "decoy")
if err != nil {
t.Fatalf("Failed to create a temporary test dir.")
}
defer os.Remove(decoyDir)
pluginPath := dir + pathsep + decoyDir
// Add temp dir to path.
os.Setenv("PACKER_PLUGIN_PATH", pluginPath)
defer os.Unsetenv("PACKER_PLUGIN_PATH")
config := newConfig()
err = config.Discover()
if err != nil {
t.Fatalf("Should not have errored: %s", err)
}
if len(config.provisioners) == 0 {
t.Fatalf("Should have found partyparrot provisioner")
}
if _, ok := config.provisioners["partyparrot"]; !ok {
t.Fatalf("Should have found partyparrot provisioner.")
}
}
func generateFakePlugins(dirname string, pluginNames []string) (string, []string, func(), error) {
dir, err := ioutil.TempDir("", dirname)
if err != nil {
return "", nil, nil, fmt.Errorf("failed to create temporary test directory: %v", err)
}
cleanUpFunc := func() {
os.RemoveAll(dir)
}
var suffix string
if runtime.GOOS == "windows" {
suffix = ".exe"
}
plugins := make([]string, len(pluginNames))
for i, plugin := range pluginNames {
plug := filepath.Join(dir, plugin+suffix)
plugins[i] = plug
_, err := os.Create(plug)
if err != nil {
cleanUpFunc()
return "", nil, nil, fmt.Errorf("failed to create temporary plugin file (%s): %v", plug, err)
}
}
return dir, plugins, cleanUpFunc, nil
}