add validation test for empty credentials

Author: intojhanurag

cmd/prompt/prompt.go

@@ -2,6 +2,7 @@ package prompt
 
 import (
 	"bufio"
+	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -77,6 +78,10 @@ func NewPromptForCredentials(in io.Reader, out, errOut io.Writer) func(repositor
 
 			result = oci.Credentials{Username: u, Password: p}
 		}
+		
+		if strings.TrimSpace(result.Username) == "" || strings.TrimSpace(result.Password) == "" {
+			return oci.Credentials{}, errors.New("username or password cannot be empty")
+		}
 
 		return result, nil
 	}

cmd/prompt/prompt_test.go

@@ -79,4 +79,16 @@ func Test_NewPromptForCredentials(t *testing.T) {
 			}
 		})
 	}
+	t.Run("empty username or password returns error", func(t *testing.T) {
+		in := strings.NewReader("\r\n\r\n")
+		out := io.Discard
+		errOut := io.Discard
+
+		credPrompt := NewPromptForCredentials(in, out, errOut)
+		_, err := credPrompt("example.com")
+		if err == nil {
+			t.Fatal("expected error for empty username or password, got nil")
+		}
+	})
+
 }