59 lines
1.6 KiB
Elixir
59 lines
1.6 KiB
Elixir
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defmodule FlattenArrayTest do
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use ExUnit.Case
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test "empty" do
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assert FlattenArray.flatten([]) ==
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[]
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end
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test "no nesting" do
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assert FlattenArray.flatten([0, 1, 2]) ==
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[0, 1, 2]
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end
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test "flattens a nested array" do
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assert FlattenArray.flatten([[[]]]) ==
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[]
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end
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test "flattens array with just integers present" do
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assert FlattenArray.flatten([1, [2, 3, 4, 5, 6, 7], 8]) ==
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[1, 2, 3, 4, 5, 6, 7, 8]
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end
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test "5 level nesting" do
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assert FlattenArray.flatten([0, 2, [[2, 3], 8, 100, 4, [[[50]]]], -2]) ==
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[0, 2, 2, 3, 8, 100, 4, 50, -2]
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end
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test "6 level nesting" do
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assert FlattenArray.flatten([1, [2, [[3]], [4, [[5]]], 6, 7], 8]) ==
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[1, 2, 3, 4, 5, 6, 7, 8]
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end
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test "nil values values are omitted from the final result" do
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assert FlattenArray.flatten([1, 2, nil]) ==
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[1, 2]
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end
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test "consecutive nil values at the front of the list are omitted from the final result" do
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assert FlattenArray.flatten([nil, nil, 3]) ==
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[3]
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end
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test "consecutive nil values in the middle of the list are omitted from the final result" do
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assert FlattenArray.flatten([1, nil, nil, 4]) ==
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[1, 4]
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end
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test "6 level nesting with nil values" do
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assert FlattenArray.flatten([0, 2, [[2, 3], 8, [[100]], nil, [[nil]]], -2]) ==
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[0, 2, 2, 3, 8, 100, -2]
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end
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test "all values in nested list are null" do
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assert FlattenArray.flatten([nil, [[[nil]]], nil, nil, [[nil, nil], nil], nil]) ==
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[]
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end
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end
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