check_eq(Screen_top1.line, 2, 'F - test_down_arrow_scrolls_down_by_one_line/screen_top')
check_eq(Cursor1.line, 4, 'F - test_down_arrow_scrolls_down_by_one_line/cursor')
end
function test_up_arrow_moves_cursor()
print('test_up_arrow_moves_cursor')
-- display the first 3 lines with the cursor on the bottom line
App.screen.init{width=120, height=60}
Lines = load_array{'abc', 'def', 'ghi', 'jkl'}
Line_width = 120
Cursor1 = {line=3, pos=1}
Screen_top1 = {line=1, pos=1}
Screen_bottom1 = {}
Zoom = 1
local screen_top_margin = 15 -- pixels
local line_height = math.floor(15*Zoom) -- pixels
App.draw()
local y = screen_top_margin
App.screen.check(y, 'abc', 'F - test_up_arrow_moves_cursor/baseline/screen:1')
y = y + line_height
App.screen.check(y, 'def', 'F - test_up_arrow_moves_cursor/baseline/screen:2')
y = y + line_height
App.screen.check(y, 'ghi', 'F - test_up_arrow_moves_cursor/baseline/screen:3')
-- after hitting the up arrow the screen is unchanged
App.run_after_keychord('up')
y = screen_top_margin
App.screen.check(y, 'abc', 'F - test_up_arrow_moves_cursor/screen:1')
y = y + line_height
App.screen.check(y, 'def', 'F - test_up_arrow_moves_cursor/screen:2')
y = y + line_height
App.screen.check(y, 'ghi', 'F - test_up_arrow_moves_cursor/screen:3')
-- but the cursor moves up by 1 line
check_eq(Screen_top1.line, 1, 'F - test_up_arrow_moves_cursor/screen_top')
check_eq(Cursor1.line, 2, 'F - test_up_arrow_moves_cursor/cursor')
end
function test_up_arrow_scrolls_up_by_one_line()
print('test_up_arrow_scrolls_up_by_one_line')
-- display the lines 2/3/4 with the cursor on line 2
App.screen.init{width=120, height=60}
Lines = load_array{'abc', 'def', 'ghi', 'jkl'}
Line_width = 120
Cursor1 = {line=2, pos=1}
Screen_top1 = {line=2, pos=1}
Screen_bottom1 = {}
Zoom = 1
local screen_top_margin = 15 -- pixels
local line_height = math.floor(15*Zoom) -- pixels
App.draw()
local y = screen_top_margin
App.screen.check(y, 'def', 'F - test_up_arrow_scrolls_up_by_one_line/baseline/screen:1')
y = y + line_height
App.screen.check(y, 'ghi', 'F - test_up_arrow_scrolls_up_by_one_line/baseline/screen:2')
y = y + line_height
App.screen.check(y, 'jkl', 'F - test_up_arrow_scrolls_up_by_one_line/baseline/screen:3')
-- after hitting the up arrow the screen scrolls up by one line
App.run_after_keychord('up')
y = screen_top_margin
App.screen.check(y, 'abc', 'F - test_up_arrow_scrolls_up_by_one_line/screen:1')
y = y + line_height
App.screen.check(y, 'def', 'F - test_up_arrow_scrolls_up_by_one_line/screen:2')
y = y + line_height
App.screen.check(y, 'ghi', 'F - test_up_arrow_scrolls_up_by_one_line/screen:3')
check_eq(Screen_top1.line, 1, 'F - test_up_arrow_scrolls_up_by_one_line/screen_top')
check_eq(Cursor1.line, 1, 'F - test_up_arrow_scrolls_up_by_one_line/cursor')