1" Test for flatting list. 2 3func Test_flatten() 4 call assert_fails('call flatten(1)', 'E686:') 5 call assert_fails('call flatten({})', 'E686:') 6 call assert_fails('call flatten("string")', 'E686:') 7 call assert_fails('call flatten([], [])', 'E745:') 8 call assert_fails('call flatten([], -1)', 'E900: maxdepth') 9 10 call assert_equal([], flatten([])) 11 call assert_equal([], flatten([[]])) 12 call assert_equal([], flatten([[[]]])) 13 14 call assert_equal([1, 2, 3], flatten([1, 2, 3])) 15 call assert_equal([1, 2, 3], flatten([[1], 2, 3])) 16 call assert_equal([1, 2, 3], flatten([1, [2], 3])) 17 call assert_equal([1, 2, 3], flatten([1, 2, [3]])) 18 call assert_equal([1, 2, 3], flatten([[1], [2], 3])) 19 call assert_equal([1, 2, 3], flatten([1, [2], [3]])) 20 call assert_equal([1, 2, 3], flatten([[1], 2, [3]])) 21 call assert_equal([1, 2, 3], flatten([[1], [2], [3]])) 22 23 call assert_equal([1, 2, 3], flatten([[1, 2, 3], []])) 24 call assert_equal([1, 2, 3], flatten([[], [1, 2, 3]])) 25 call assert_equal([1, 2, 3], flatten([[1, 2], [], [3]])) 26 call assert_equal([1, 2, 3], flatten([[], [1, 2, 3], []])) 27 call assert_equal([1, 2, 3, 4], flatten(range(1, 4))) 28 29 " example in the help 30 call assert_equal([1, 2, 3, 4, 5], flatten([1, [2, [3, 4]], 5])) 31 call assert_equal([1, 2, [3, 4], 5], flatten([1, [2, [3, 4]], 5], 1)) 32 33 call assert_equal([0, [1], 2, [3], 4], flatten([[0, [1]], 2, [[3], 4]], 1)) 34 call assert_equal([1, 2, 3], flatten([[[[1]]], [2], [3]], 3)) 35 call assert_equal([[1], [2], [3]], flatten([[[1], [2], [3]]], 1)) 36 call assert_equal([[1]], flatten([[1]], 0)) 37 38 " Make it flatten if the given maxdepth is larger than actual depth. 39 call assert_equal([1, 2, 3], flatten([[1, 2, 3]], 1)) 40 call assert_equal([1, 2, 3], flatten([[1, 2, 3]], 2)) 41 42 let l:list = [[1], [2], [3]] 43 call assert_equal([1, 2, 3], flatten(l:list)) 44 call assert_equal([1, 2, 3], l:list) 45 46 " Tests for checking reference counter works well. 47 let l:x = {'foo': 'bar'} 48 call assert_equal([1, 2, l:x, 3], flatten([1, [2, l:x], 3])) 49 call test_garbagecollect_now() 50 call assert_equal('bar', l:x.foo) 51 52 let l:list = [[1], [2], [3]] 53 call assert_equal([1, 2, 3], flatten(l:list)) 54 call test_garbagecollect_now() 55 call assert_equal([1, 2, 3], l:list) 56 57 " Tests for checking circular reference list can be flatten. 58 let l:x = [1] 59 let l:y = [x] 60 let l:z = flatten(l:y) 61 call assert_equal([1], l:z) 62 call test_garbagecollect_now() 63 let l:x[0] = 2 64 call assert_equal([2], l:x) 65 call assert_equal([1], l:z) " NOTE: primitive types are copied. 66 call assert_equal([1], l:y) 67 68 let l:x = [2] 69 let l:y = [1, [l:x], 3] " [1, [[2]], 3] 70 let l:z = flatten(l:y, 1) 71 call assert_equal([1, [2], 3], l:z) 72 let l:x[0] = 9 73 call assert_equal([1, [9], 3], l:z) " Reference to l:x is kept. 74 call assert_equal([1, [9], 3], l:y) 75 76 let l:x = [1] 77 let l:y = [2] 78 call add(x, y) " l:x = [1, [2]] 79 call add(y, x) " l:y = [2, [1, [...]]] 80 call assert_equal([1, 2, 1, 2], flatten(l:x, 2)) 81 call assert_equal([2, l:x], l:y) 82endfunc 83 84func Test_flattennew() 85 let l = [1, [2, [3, 4]], 5] 86 call assert_equal([1, 2, 3, 4, 5], flattennew(l)) 87 call assert_equal([1, [2, [3, 4]], 5], l) 88 89 call assert_equal([1, 2, [3, 4], 5], flattennew(l, 1)) 90 call assert_equal([1, [2, [3, 4]], 5], l) 91endfunc 92 93" vim: shiftwidth=2 sts=2 expandtab 94