package identity

import (
	"strings"
	"testing"
)

func TestValidatePasswordLengthAndComplexity(t *testing.T) {
	tests := []struct {
		name     string
		username string
		password string
		want     string
	}{
		{name: "six lowercase characters", username: "operator", password: "abcdef"},
		{name: "contains username", username: "admin", password: "admin123"},
		{name: "six unicode characters", username: "operator", password: "密码密码密码"},
		{name: "five characters", username: "operator", password: "Ab123", want: "至少需要 6 个字符"},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			err := ValidatePassword(test.username, test.password)
			if test.want == "" {
				if err != nil {
					t.Fatalf("ValidatePassword() error = %v", err)
				}
				return
			}
			if err == nil || !strings.Contains(err.Error(), test.want) {
				t.Fatalf("ValidatePassword() error = %v, want substring %q", err, test.want)
			}
		})
	}
}