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annotate src/testdir/test_flatten.vim @ 23981:05c1a8485fb9

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Added tag v8.2.2532 for changeset bee8c78c0c6aa942c3dfef43ed9095cc12c67731
author Bram Moolenaar <Bram@vim.org>
date Sat, 20 Feb 2021 08:30:04 +0100
parents 525c9e218c69
children 485c7c4afeb7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 " Test for flatting list.
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2
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3 func Test_flatten()
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4 call assert_fails('call flatten(1)', 'E686:')
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5 call assert_fails('call flatten({})', 'E686:')
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6 call assert_fails('call flatten("string")', 'E686:')
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7 call assert_fails('call flatten([], [])', 'E745:')
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8 call assert_fails('call flatten([], -1)', 'E900: maxdepth')
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9
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10 call assert_equal([], flatten([]))
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11 call assert_equal([], flatten([[]]))
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12 call assert_equal([], flatten([[[]]]))
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13
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14 call assert_equal([1, 2, 3], flatten([1, 2, 3]))
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15 call assert_equal([1, 2, 3], flatten([[1], 2, 3]))
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16 call assert_equal([1, 2, 3], flatten([1, [2], 3]))
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17 call assert_equal([1, 2, 3], flatten([1, 2, [3]]))
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18 call assert_equal([1, 2, 3], flatten([[1], [2], 3]))
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19 call assert_equal([1, 2, 3], flatten([1, [2], [3]]))
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20 call assert_equal([1, 2, 3], flatten([[1], 2, [3]]))
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21 call assert_equal([1, 2, 3], flatten([[1], [2], [3]]))
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22
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23 call assert_equal([1, 2, 3], flatten([[1, 2, 3], []]))
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24 call assert_equal([1, 2, 3], flatten([[], [1, 2, 3]]))
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25 call assert_equal([1, 2, 3], flatten([[1, 2], [], [3]]))
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26 call assert_equal([1, 2, 3], flatten([[], [1, 2, 3], []]))
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27 call assert_equal([1, 2, 3, 4], flatten(range(1, 4)))
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28
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29 " example in the help
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30 call assert_equal([1, 2, 3, 4, 5], flatten([1, [2, [3, 4]], 5]))
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31 call assert_equal([1, 2, [3, 4], 5], flatten([1, [2, [3, 4]], 5], 1))
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32
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33 call assert_equal([0, [1], 2, [3], 4], flatten([[0, [1]], 2, [[3], 4]], 1))
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34 call assert_equal([1, 2, 3], flatten([[[[1]]], [2], [3]], 3))
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35 call assert_equal([[1], [2], [3]], flatten([[[1], [2], [3]]], 1))
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36 call assert_equal([[1]], flatten([[1]], 0))
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37
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38 " Make it flatten if the given maxdepth is larger than actual depth.
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39 call assert_equal([1, 2, 3], flatten([[1, 2, 3]], 1))
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40 call assert_equal([1, 2, 3], flatten([[1, 2, 3]], 2))
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41
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42 let l:list = [[1], [2], [3]]
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43 call assert_equal([1, 2, 3], flatten(l:list))
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44 call assert_equal([1, 2, 3], l:list)
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45
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46 " Tests for checking reference counter works well.
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47 let l:x = {'foo': 'bar'}
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48 call assert_equal([1, 2, l:x, 3], flatten([1, [2, l:x], 3]))
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49 call test_garbagecollect_now()
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50 call assert_equal('bar', l:x.foo)
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51
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52 let l:list = [[1], [2], [3]]
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53 call assert_equal([1, 2, 3], flatten(l:list))
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54 call test_garbagecollect_now()
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55 call assert_equal([1, 2, 3], l:list)
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56
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57 " Tests for checking circular reference list can be flatten.
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58 let l:x = [1]
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59 let l:y = [x]
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60 let l:z = flatten(l:y)
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61 call assert_equal([1], l:z)
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62 call test_garbagecollect_now()
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63 let l:x[0] = 2
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64 call assert_equal([2], l:x)
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65 call assert_equal([1], l:z) " NOTE: primitive types are copied.
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66 call assert_equal([1], l:y)
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67
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68 let l:x = [2]
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69 let l:y = [1, [l:x], 3] " [1, [[2]], 3]
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70 let l:z = flatten(l:y, 1)
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71 call assert_equal([1, [2], 3], l:z)
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72 let l:x[0] = 9
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73 call assert_equal([1, [9], 3], l:z) " Reference to l:x is kept.
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74 call assert_equal([1, [9], 3], l:y)
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75
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76 let l:x = [1]
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77 let l:y = [2]
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78 call add(x, y) " l:x = [1, [2]]
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79 call add(y, x) " l:y = [2, [1, [...]]]
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80 call assert_equal([1, 2, 1, 2], flatten(l:x, 2))
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81 call assert_equal([2, l:x], l:y)
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82 endfunc
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83
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84 func Test_flattennew()
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85 let l = [1, [2, [3, 4]], 5]
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86 call assert_equal([1, 2, 3, 4, 5], flattennew(l))
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87 call assert_equal([1, [2, [3, 4]], 5], l)
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88
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89 call assert_equal([1, 2, [3, 4], 5], flattennew(l, 1))
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90 call assert_equal([1, [2, [3, 4]], 5], l)
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91 endfunc
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92
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93 " vim: shiftwidth=2 sts=2 expandtab