package cqlerrors

import (
	"errors"
	"fmt"
	"testing"
)

func TestWriteTimeoutRetryableCarriesKindCodeAndMessage(t *testing.T) {
	err := WriteTimeoutRetryable("deadlock found", RetryDeadlock)

	var coder interface{ Code() int }
	if !errors.As(err, &coder) || coder.Code() != CodeWriteTimeout {
		t.Fatalf("expected WriteTimeout code, got %T: %v", err, err)
	}
	if err.Error() != "deadlock found" {
		t.Fatalf("expected message preserved, got %q", err.Error())
	}
	if got := RetryKindOf(err); got != RetryDeadlock {
		t.Fatalf("expected RetryDeadlock, got %v", got)
	}
}

func TestRetryKindOfSeesThroughWrapping(t *testing.T) {
	err := fmt.Errorf("exec failed: %w", WriteTimeoutRetryable("boom", RetryDeadlock))
	if got := RetryKindOf(err); got != RetryDeadlock {
		t.Fatalf("expected RetryDeadlock through wrapping, got %v", got)
	}
}

func TestRetryKindOfDefaultsToNone(t *testing.T) {
	cases := []struct {
		name string
		err  error
	}{
		{"nil", nil},
		{"plain-write-timeout", WriteTimeout("lock wait timeout")},
		{"unrelated", errors.New("some other failure")},
	}
	for _, tc := range cases {
		t.Run(tc.name, func(t *testing.T) {
			if got := RetryKindOf(tc.err); got != RetryNone {
				t.Fatalf("expected RetryNone, got %v", got)
			}
		})
	}
}