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Diffstat (limited to 'src/testdir/test_flatten.vim')
-rw-r--r-- | src/testdir/test_flatten.vim | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/testdir/test_flatten.vim b/src/testdir/test_flatten.vim new file mode 100644 index 0000000..34431f8 --- /dev/null +++ b/src/testdir/test_flatten.vim @@ -0,0 +1,84 @@ +" Test for flatting list. + +func Test_flatten() + call assert_fails('call flatten(1)', 'E686:') + call assert_fails('call flatten({})', 'E686:') + call assert_fails('call flatten("string")', 'E686:') + call assert_fails('call flatten([], [])', 'E745:') + call assert_fails('call flatten([], -1)', 'E900: maxdepth') + + call assert_equal([], flatten([])) + call assert_equal([], flatten([[]])) + call assert_equal([], flatten([[[]]])) + + call assert_equal([1, 2, 3], flatten([1, 2, 3])) + call assert_equal([1, 2, 3], flatten([[1], 2, 3])) + call assert_equal([1, 2, 3], flatten([1, [2], 3])) + call assert_equal([1, 2, 3], flatten([1, 2, [3]])) + call assert_equal([1, 2, 3], flatten([[1], [2], 3])) + call assert_equal([1, 2, 3], flatten([1, [2], [3]])) + call assert_equal([1, 2, 3], flatten([[1], 2, [3]])) + call assert_equal([1, 2, 3], flatten([[1], [2], [3]])) + + call assert_equal([1, 2, 3], flatten([[1, 2, 3], []])) + call assert_equal([1, 2, 3], flatten([[], [1, 2, 3]])) + call assert_equal([1, 2, 3], flatten([[1, 2], [], [3]])) + call assert_equal([1, 2, 3], flatten([[], [1, 2, 3], []])) + call assert_equal([1, 2, 3, 4], flatten(range(1, 4))) + + " example in the help + call assert_equal([1, 2, 3, 4, 5], flatten([1, [2, [3, 4]], 5])) + call assert_equal([1, 2, [3, 4], 5], flatten([1, [2, [3, 4]], 5], 1)) + + call assert_equal([0, [1], 2, [3], 4], flatten([[0, [1]], 2, [[3], 4]], 1)) + call assert_equal([1, 2, 3], flatten([[[[1]]], [2], [3]], 3)) + call assert_equal([[1], [2], [3]], flatten([[[1], [2], [3]]], 1)) + call assert_equal([[1]], flatten([[1]], 0)) + + " Make it flatten if the given maxdepth is larger than actual depth. + call assert_equal([1, 2, 3], flatten([[1, 2, 3]], 1)) + call assert_equal([1, 2, 3], flatten([[1, 2, 3]], 2)) + + let l:list = [[1], [2], [3]] + call assert_equal([1, 2, 3], flatten(l:list)) + call assert_equal([1, 2, 3], l:list) + + " Tests for checking reference counter works well. + let l:x = {'foo': 'bar'} + call assert_equal([1, 2, l:x, 3], flatten([1, [2, l:x], 3])) + call test_garbagecollect_now() + call assert_equal('bar', l:x.foo) + + let l:list = [[1], [2], [3]] + call assert_equal([1, 2, 3], flatten(l:list)) + call test_garbagecollect_now() + call assert_equal([1, 2, 3], l:list) + + " Tests for checking circular reference list can be flatten. + let l:x = [1] + let l:y = [x] + let l:z = flatten(l:y) + call assert_equal([1], l:z) + call test_garbagecollect_now() + let l:x[0] = 2 + call assert_equal([2], l:x) + call assert_equal([1], l:z) " NOTE: primitive types are copied. + call assert_equal([1], l:y) + + let l:x = [2] + let l:y = [1, [l:x], 3] " [1, [[2]], 3] + let l:z = flatten(l:y, 1) + call assert_equal([1, [2], 3], l:z) + let l:x[0] = 9 + call assert_equal([1, [9], 3], l:z) " Reference to l:x is kept. + call assert_equal([1, [9], 3], l:y) + + let l:x = [1] + let l:y = [2] + call add(x, y) " l:x = [1, [2]] + call add(y, x) " l:y = [2, [1, [...]]] + call assert_equal([1, 2, 1, 2], flatten(l:x, 2)) + call assert_equal([2, l:x], l:y) +endfunc + +" vim: shiftwidth=2 sts=2 expandtab |