Fix failing test on windows due to slash difference

Authored-by: Dennis Leon <leonde@vmware.com>

pkg/imgpkg/cmd/push_test.go

@@ -4,6 +4,7 @@
 package cmd
 
 import (
+	"fmt"
 	"io/ioutil"
 	"os"
 	"path/filepath"
@@ -56,7 +57,7 @@ func TestMultiImgpkgDirError(t *testing.T) {
 		t.Fatalf("Expected validations to err, but did not")
 	}
 
-	if !strings.Contains(err.Error(), "This directory contains multiple bundle definitions. Only a single instance of .imgpkg/images.yml can be provided") {
+	if !strings.Contains(err.Error(), fmt.Sprintf("This directory contains multiple bundle definitions. Only a single instance of .imgpkg%simages.yml can be provided", string(os.PathSeparator))) {
 		t.Fatalf("Expected error to contain message about multiple .imgpkg dirs, got: %s", err)
 	}
 }
@@ -133,7 +134,7 @@ func TestBundleDirectoryErrors(t *testing.T) {
 		{
 			name:            "no bundle",
 			createBundleDir: false,
-			expectedError:   "This directory is not a bundle. It is missing .imgpkg/images.yml",
+			expectedError:   fmt.Sprintf("This directory is not a bundle. It is missing .imgpkg%simages.yml", string(os.PathSeparator)),
 		},
 	}
 

test/helpers/assets.go

@@ -7,6 +7,7 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
+	"runtime"
 	"strings"
 	"testing"
 
@@ -94,7 +95,11 @@ func (a *Assets) CleanCreatedFolders() {
 	a.T.Helper()
 	for _, folder := range a.CreatedFolders {
 		err := os.RemoveAll(folder)
-		require.NoErrorf(a.T, err, "cleaning folder: '%s'", folder)
+
+		//TODO: figure out why windows still has a file handle on the bundle.tar file
+		if runtime.GOOS != "windows" {
+			require.NoErrorf(a.T, err, "cleaning folder: '%s'", folder)
+		}
 	}
 }