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# frozen_string_literal: true
require "test_helper"
module Byebug
#
# Tests undisplay command used to stop periodically displaying expressions.
#
class UndisplayTest < TestCase
def program
strip_line_numbers <<-RUBY
1: module Byebug
2: d = 0
3:
4: byebug
5:
6: d += 3
7: d + 6
8: end
RUBY
end
def test_asks_for_confirmation
enter "display d", "display d + 1", "undisplay"
debug_code(program) { clear_displays }
check_output_includes "Clear all expressions? (y/n)"
end
def test_removes_all_expressions_from_list_if_confirmed
enter "display d", "display d + 1", "undisplay", "y", "next"
debug_code(program) do
assert_equal [[false, "d"], [false, "d + 1"]], Byebug.displays
clear_displays
end
check_output_doesnt_include "1: d = 3", "2: d + 1 = 4"
end
def test_does_not_remove_all_expressions_from_list_unless_confirmed
enter "display d", "display d + 1", "undisplay", "n", "display"
debug_code(program) do
assert_equal [[true, "d"], [true, "d + 1"]], Byebug.displays
clear_displays
end
check_output_includes "1: d = 0", "2: d + 1 = 1"
end
def test_marks_specific_expression_from_list_as_inactive
enter "display d", "display d + 1", "undisplay 1"
debug_code(program) do
assert_equal [[nil, "d"], [true, "d + 1"]], Byebug.displays
clear_displays
end
end
def test_displays_only_the_active_position
enter "display d", "display d + 1", "undisplay 1", "next"
debug_code(program) { clear_displays }
check_output_includes "2: d + 1 = 4"
check_output_doesnt_include "1: d = 3"
end
def test_disable_display_removes_the_expression_from_display_list
enter "display d", "disable display 1"
debug_code(program) do
assert_equal [[false, "d"]], Byebug.displays
clear_displays
end
end
def test_disable_display_shows_an_error_if_no_displays_are_set
enter "disable display 1"
debug_code(program)
check_error_includes "No display expressions have been set"
end
def test_disable_display_shows_an_error_if_theres_no_such_display_position
enter "display d", "disable display 4"
debug_code(program) { clear_displays }
check_error_includes \
'"disable display" argument "4" needs to be at most 1'
end
def test_enable_display_set_display_flag_to_true_in_display_list
enter "display d", "disable display 1", "enable display 1"
debug_code(program) do
assert_equal [[true, "d"]], Byebug.displays
clear_displays
end
end
end
end
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