[airshipui] - create temporary test configs

* Create temporary test configs for testing and
  clean it after the test case executed
* This will allow user to add/modify/delete from the temporary configs,
  instead of working on the original files.

Change-Id: I98e07ee8f6697e5fbcfeaa2223bf0282d7abb0c2

internal/integrations/ctl/baremetal_test.go

@@ -22,11 +22,8 @@ import (
 	"opendev.org/airship/airshipui/internal/configs"
 )
 
-func init() {
-	initCTL()
-}
-
 func TestHandleDefaultBaremetalRequest(t *testing.T) {
+	initCTL(t)
 	html, err := GetBaremetalHTML()
 	require.NoError(t, err)
 

internal/integrations/ctl/config_test.go

@@ -18,28 +18,24 @@ import (
 	"log"
 	"testing"
 
-	"opendev.org/airship/airshipctl/pkg/config"
 	"opendev.org/airship/airshipctl/pkg/environment"
 	"opendev.org/airship/airshipui/internal/configs"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-)
-
-// TODO: Determine if this should be broken out into it's own file
-const (
-	testKubeConfig    string = "testdata/kubeconfig.yaml"
-	testAirshipConfig string = "testdata/config.yaml"
+	"opendev.org/airship/airshipui/testutil"
 )
 
 // TODO: Determine if this should be broken out into it's own file
 // setup the airshipCTL env prior to running
-func initCTL() {
+func initCTL(t *testing.T) {
+	conf, configPath, kubeConfigPath, cleanup := testutil.InitConfig(t)
+	defer cleanup(t)
 	// point airshipctl client toward test configs
 	c.settings = &environment.AirshipCTLSettings{
-		AirshipConfigPath: testAirshipConfig,
-		KubeConfigPath:    testKubeConfig,
-		Config:            config.NewConfig(),
+		AirshipConfigPath: configPath,
+		KubeConfigPath:    kubeConfigPath,
+		Config:            conf,
 	}
 
 	err := c.settings.Config.LoadConfig(
@@ -52,11 +48,8 @@ func initCTL() {
 	}
 }
 
-func init() {
-	initCTL()
-}
-
 func TestHandleDefaultConfigRequest(t *testing.T) {
+	initCTL(t)
 	// get the default html
 	html, err := getConfigHTML()
 	require.NoError(t, err)

internal/integrations/ctl/document_test.go

@@ -22,11 +22,8 @@ import (
 	"opendev.org/airship/airshipui/internal/configs"
 )
 
-func init() {
-	initCTL()
-}
-
 func TestHandleDefaultDocumentRequest(t *testing.T) {
+	initCTL(t)
 	html, err := GetDocumentHTML()
 	require.NoError(t, err)
 

testutil/testconfig.go

@@ -15,9 +15,73 @@
 package testutil
 
 import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"opendev.org/airship/airshipctl/pkg/config"
 	"opendev.org/airship/airshipui/internal/configs"
 )
 
+// TODO: Determine if this should be broken out into it's own file
+const (
+	testKubeConfig    string = "testdata/kubeconfig.yaml"
+	testAirshipConfig string = "testdata/config.yaml"
+)
+
+// TempDir creates a new temporary directory in the system's temporary file
+// storage with a name beginning with prefix.
+// It returns the path of the new directory and a function that can be used to
+// easily clean up that directory
+func TempDir(t *testing.T, prefix string) (path string, cleanup func(*testing.T)) {
+	path, err := ioutil.TempDir("", prefix)
+	require.NoError(t, err, "Failed to create a temporary directory")
+
+	return path, func(tt *testing.T) {
+		err := os.RemoveAll(path)
+		if err != nil {
+			t.Logf("Could not clean up temp directory %q: %v", path, err)
+		}
+	}
+}
+
+// InitConfig creates a Config object meant for testing.
+//
+// The returned config object will be associated with real files stored in a
+// directory in the user's temporary file storage
+// This directory can be cleaned up by calling the returned "cleanup" function
+func InitConfig(t *testing.T) (conf *config.Config, configPath string,
+	kubeConfigPath string, cleanup func(*testing.T)) {
+	t.Helper()
+	testDir, cleanup := TempDir(t, "airship-test")
+
+	configData, err := ioutil.ReadFile(testAirshipConfig)
+	if err != nil {
+		t.Logf("Could not read file %q", testAirshipConfig)
+	}
+	kubeConfigData, err := ioutil.ReadFile(testKubeConfig)
+	if err != nil {
+		t.Logf("Could not read file %q", kubeConfigData)
+	}
+
+	configPath = filepath.Join(testDir, "config")
+	err = ioutil.WriteFile(configPath, configData, 0600)
+	require.NoError(t, err)
+
+	kubeConfigPath = filepath.Join(testDir, "kubeconfig")
+	err = ioutil.WriteFile(kubeConfigPath, kubeConfigData, 0600)
+	require.NoError(t, err)
+
+	conf = config.NewConfig()
+
+	err = conf.LoadConfig(configPath, kubeConfigPath)
+	require.NoError(t, err)
+
+	return conf, configPath, kubeConfigPath, cleanup
+}
+
 // DummyDashboardConfig returns a populated Dashboard struct
 func DummyDashboardConfig() configs.Dashboard {
 	return configs.Dashboard{