added function tests

pkg/cmd/repo/rename/rename.go

@@ -17,10 +17,11 @@ import (
 )
 
 type RenameOptions struct {
-	HttpClient func() (*http.Client, error)
-	IO         *iostreams.IOStreams
-	Config     func() (config.Config, error)
-	RepoName   []string
+	HttpClient  func() (*http.Client, error)
+	IO          *iostreams.IOStreams
+	Config      func() (config.Config, error)
+	oldRepoName string
+	newRepoName string
 }
 
 type renameRepo struct {
@@ -43,7 +44,8 @@ func NewCmdRename(f *cmdutil.Factory, runf func(*RenameOptions) error) *cobra.Co
 		Long:  "Rename a GitHub repository",
 		Args:  cmdutil.ExactArgs(2, "cannot rename: repository argument required"),
 		RunE: func(cmd *cobra.Command, args []string) error {
-			opts.RepoName = append(opts.RepoName, args[0], args[1])
+			opts.oldRepoName = args[0]
+			opts.newRepoName = args[1]
 			if runf != nil {
 				return runf(opts)
 			}
@@ -66,11 +68,11 @@ func renameRun(opts *RenameOptions) error {
 		return err
 	}
 
-	oldRepoName := opts.RepoName[0]
+	oldRepoName := opts.oldRepoName
 	if !strings.Contains(oldRepoName, "/") {
 		oldRepoName = currentUser + "/" + oldRepoName
 	}
-	newRepoName := opts.RepoName[1]
+	newRepoName := opts.newRepoName
 
 	repo, err := ghrepo.FromFullName(oldRepoName)
 	if err != nil {

pkg/cmd/repo/rename/rename_test.go

@@ -2,39 +2,67 @@ package rename
 
 import (
 	"testing"
+
+	"github.com/cli/cli/v2/pkg/cmdutil"
+	"github.com/cli/cli/v2/pkg/iostreams"
+	"github.com/google/shlex"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
-func TestNewCmdRename(t * testing.T) {
-	tests := []struct {
-		name string 
-		tty bool
-		input string
-		output RenameOptions
-		wantErr bool
-		errMsg string
+func TestNewCmdRename(t *testing.T) {
+	testCases := []struct {
+		name     string
+		args     string
+		wantOpts RenameOptions
+		wantErr  string
 	}{
 		{
-			name: "no argument",
-			tty: true,
-			input: "",
-			output: RenameOptions{},
-		}, 
-		{
-			name: "argument",
-			tty: true,
-			input: "cli/cli",
-			output: RenameOptions{
-				DestArg: "cli comand-line-interface",
-			},
+			name:    "no arguments",
+			args:    "",
+			wantErr: "cannot rename: repository argument required",
 		},
 		{
-			name: "incorrect argument",
-			tty: true,
-			input: "",
-			output: RenameOptions{
-				DestArg: "cli ",
+			name: "correct argument",
+			args: "OWNER/REPO REPOS",
+			wantOpts: RenameOptions{
+				oldRepoName: "OWNER/REPO",
+				newRepoName: "REPOS",
 			},
 		},
 	}
-}
+	for _, tt := range testCases {
+		t.Run(tt.name, func(t *testing.T) {
+			io, stdin, stdout, stderr := iostreams.Test()
+			fac := &cmdutil.Factory{IOStreams: io}
 
+			var opts *RenameOptions
+			cmd := NewCmdRename(fac, func(co *RenameOptions) error {
+				opts = co
+				return nil
+			})
+
+			argv, err := shlex.Split(tt.args)
+			require.NoError(t, err)
+			cmd.SetArgs(argv)
+
+			cmd.SetIn(stdin)
+			cmd.SetOut(stdout)
+			cmd.SetErr(stderr)
+
+			_, err = cmd.ExecuteC()
+			if tt.wantErr != "" {
+				assert.EqualError(t, err, tt.wantErr)
+				return
+			} else {
+				assert.NoError(t, err)
+			}
+
+			assert.Equal(t, "", stdout.String())
+			assert.Equal(t, "", stderr.String())
+
+			assert.Equal(t, tt.wantOpts.oldRepoName, opts.oldRepoName)
+			assert.Equal(t, tt.wantOpts.newRepoName, opts.newRepoName)
+		})
+	}
+}