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start writing some tests for drawings

This commit is contained in:
Kartik K. Agaram 2022-06-14 10:28:09 -07:00
parent 8c535dbb3a
commit dc3b18eb6c
2 changed files with 33 additions and 1 deletions
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4
drawing.lua
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@ -2,6 +2,8 @@
Drawing = {}
geom = require 'geom'
require 'drawing_tests'
-- All drawings span 100% of some conceptual 'page width' and divide it up
-- into 256 parts.
function Drawing.draw(line)
@ -202,7 +204,7 @@ end
function Drawing.in_drawing(drawing, x,y)
if drawing.y == nil then return false end -- outside current page
return y >= drawing.y and y < drawing.y + Drawing.pixels(drawing.h) and x >= 16 and x < 16+Line_width
return y >= drawing.y and y < drawing.y + Drawing.pixels(drawing.h) and x >= Margin_left and x < Margin_left+Line_width
end
function Drawing.mouse_pressed(drawing, x,y, button)

30
drawing_tests.lua Normal file
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@ -0,0 +1,30 @@
-- major tests for drawings
-- We minimize assumptions about specific pixels, and try to test at the level
-- of specific shapes. In particular, no tests of freehand drawings.
function test_draw_line()
io.write('\ntest_draw_line')
-- display a drawing followed by a line of text (you shouldn't ever have a drawing right at the end)
App.screen.init{width=Margin_left+300, height=300}
Lines = load_array{'```lines', '```', ''}
Line_width = 256 -- drawing coordinates 1:1 with pixels
Current_drawing_mode = 'line'
App.draw()
check_eq(#Lines, 2, 'F - test_draw_line/baseline/#lines')
check_eq(Lines[1].mode, 'drawing', 'F - test_draw_line/baseline/mode')
check_eq(Lines[1].y, Margin_top+Drawing_padding_top, 'F - test_draw_line/baseline/y')
check_eq(Lines[1].h, 128, 'F - test_draw_line/baseline/y')
check_eq(#Lines[1].shapes, 0, 'F - test_draw_line/baseline/#shapes')
-- draw a line
App.run_after_mouse_press(Margin_left+5, Margin_top+Drawing_padding_top+6, 1)
App.run_after_mouse_release(Margin_left+35, Margin_top+Drawing_padding_top+36, 1)
check_eq(#Lines[1].shapes, 1, 'F - test_draw_line/#shapes')
check_eq(#Lines[1].points, 2, 'F - test_draw_line/#points')
local drawing = Lines[1]
local p1 = drawing.points[drawing.shapes[1].p1]
local p2 = drawing.points[drawing.shapes[1].p2]
check_eq(p1.x, 5, 'F - test_draw_line/p1:x')
check_eq(p1.y, 6, 'F - test_draw_line/p1:y')
check_eq(p2.x, 35, 'F - test_draw_line/p2:x')
check_eq(p2.y, 36, 'F - test_draw_line/p2:y')
end