public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int t = sc . nextInt ( ) ;
  while ( t -- > 0 ) {
    String str = t == 0 ? "" : "\n" ;
    long n = sc . nextLong ( ) ;
    long u = sc . nextLong ( ) ;
    long v = sc . nextLong ( ) ;
    long arr [ ] = new long [ ( int ) n ] ;
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      arr [ i ] = sc . nextLong ( ) ;
    }
    long min = Long . MAX_VALUE ;
    for ( int i = 0 ;
    i < n - 1 ;
    i ++ ) {
      if ( Math . abs ( arr [ i ] - arr [ i + 1 ] ) > 1 ) {
        min = 0 ;
      }
      else if ( arr [ i ] == arr [ i + 1 ] ) {
        min = Math . min ( min , Math . min ( u + v , 2 * v ) ) ;
      }
      else {
        min = Math . min ( min , Math . min ( u , v ) ) ;
      }
    }
    System . out . print ( min + str ) ;
  }
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int t = sc . nextInt ( ) ; while ( t -- > 0 ) { String str = t == 0 ? " " : " \n " ; long n = sc . nextLong ( ) ; long u = sc . nextLong ( ) ; long v = sc . nextLong ( ) ; long arr [ ] = new long [ ( int ) n ] ; for ( int i = 0 ; i < n ; i ++ ) { arr [ i ] = sc . nextLong ( ) ; } long min = Long . MAX_VALUE ; for ( int i = 0 ; i < n - 1 ; i ++ ) { if ( Math . abs ( arr [ i ] - arr [ i + 1 ] ) > 1 ) { min = 0 ; } else if ( arr [ i ] == arr [ i + 1 ] ) { min = Math . min ( min , Math . min ( u + v , 2 * v ) ) ; } else { min = Math . min ( min , Math . min ( u , v ) ) ; } } System . out . print ( min + str ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (while_statement condition: (parenthesized_expression (binary_expression left: (update_expression (identifier)) right: (decimal_integer_literal))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (ternary_expression condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) consequence: (string_literal) alternative: (string_literal)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (cast_expression type: (integral_type) value: (identifier)))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (field_access object: (identifier) field: (identifier)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) right: (decimal_integer_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal)))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (identifier)) (binary_expression left: (decimal_integer_literal) right: (identifier))))))))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (identifier)))))))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (identifier)))))))))