`1` ```exercism fetch lua rectangles ```

#### rectangles_spec.lua

 ```1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77``` ```local rectangles = require('rectangles') describe('rectangles', function() it('should find 0 rectangles in an empty grid', function() assert.equal(0, rectangles.count({})) end) it('should find 0 rectangles in a non-empty grid', function() assert.equal(0, rectangles.count({ ' ', ' ' })) end) it('should find a single rectangle', function() assert.equal(1, rectangles.count({ '+-+', '| |', '+-+' })) end) it('should find connected rectangles', function() assert.equal(2, rectangles.count({ ' +-+', ' | |', '+-+-+', '| | ', '+-+ ' })) end) it('should find nested rectangles', function() assert.equal(5, rectangles.count({ ' +-+', ' | |', '+-+-+', '| | |', '+-+-+' })) end) it('should not count incomplete rectangles', function() assert.equal(1, rectangles.count({ ' +-+', ' |', '+-+-+', '| | -', '+-+-+' })) end) it('should not count rectangles without 4 corners', function() assert.equal(2, rectangles.count({ '+------+----+', '| | |', '+------+ |', '| | |', '+---+-------+' })) end) it('should find rectangles in large input', function() assert.equal(60, rectangles.count({ ' ', ' +---+--+----+ ', ' | +--+----+ ', ' +---+--+ | ', ' | +--+----+ ', ' +---+--+--+-+ ', ' +---+--+--+-+ ', ' +------+ | | ', ' +-+ ', ' ' })) end) end) ```