1 files changed, 324 insertions, 0 deletions

diff --git a/spec/outputs/test/slicing_spec.lua b/spec/outputs/test/slicing_spec.lua
new file mode 100644
index 0000000..1db2938
--- /dev/null
+++ b/spec/outputs/test/slicing_spec.lua
@@ -0,0 +1,324 @@
+return describe("slicing", function()
+        it("should slice array with basic syntax", function()
+                local items = {
+                        1,
+                        2,
+                        3,
+                        4,
+                        5
+                }
+                local result
+                do
+                        local _accum_0 = { }
+                        local _len_0 = 1
+                        for _index_0 = 1, 3 do
+                                local _item_0 = items[_index_0]
+                                _accum_0[_len_0] = _item_0
+                                _len_0 = _len_0 + 1
+                        end
+                        result = _accum_0
+                end
+                return assert.same(result, {
+                        1,
+                        2,
+                        3
+                })
+        end)
+        it("should slice from beginning", function()
+                local items = {
+                        1,
+                        2,
+                        3,
+                        4,
+                        5
+                }
+                local result
+                do
+                        local _accum_0 = { }
+                        local _len_0 = 1
+                        local _max_0 = #items
+                        _max_0 = _max_0 < 0 and #items + _max_0 + 1 or _max_0
+                        for _index_0 = 1, _max_0 do
+                                local _item_0 = items[_index_0]
+                                _accum_0[_len_0] = _item_0
+                                _len_0 = _len_0 + 1
+                        end
+                        result = _accum_0
+                end
+                return assert.same(result, {
+                        1,
+                        2,
+                        3,
+                        4,
+                        5
+                })
+        end)
+        it("should slice to end", function()
+                local items = {
+                        1,
+                        2,
+                        3,
+                        4,
+                        5
+                }
+                local result
+                do
+                        local _accum_0 = { }
+                        local _len_0 = 1
+                        for _index_0 = 3, 5 do
+                                local _item_0 = items[_index_0]
+                                _accum_0[_len_0] = _item_0
+                                _len_0 = _len_0 + 1
+                        end
+                        result = _accum_0
+                end
+                return assert.same(result, {
+                        3,
+                        4,
+                        5
+                })
+        end)
+        it("should handle negative indices", function()
+                local items = {
+                        1,
+                        2,
+                        3,
+                        4,
+                        5
+                }
+                local result
+                do
+                        local _accum_0 = { }
+                        local _len_0 = 1
+                        local _min_0 = #items + -3 + 1
+                        local _max_0 = #items + -1 + 1
+                        for _index_0 = _min_0, _max_0 do
+                                local _item_0 = items[_index_0]
+                                _accum_0[_len_0] = _item_0
+                                _len_0 = _len_0 + 1
+                        end
+                        result = _accum_0
+                end
+                return assert.same(result, {
+                        3,
+                        4,
+                        5
+                })
+        end)
+        it("should slice single element", function()
+                local items = {
+                        1,
+                        2,
+                        3,
+                        4,
+                        5
+                }
+                local result
+                do
+                        local _accum_0 = { }
+                        local _len_0 = 1
+                        for _index_0 = 2, 2 do
+                                local _item_0 = items[_index_0]
+                                _accum_0[_len_0] = _item_0
+                                _len_0 = _len_0 + 1
+                        end
+                        result = _accum_0
+                end
+                return assert.same(result, {
+                        2
+                })
+        end)
+        it("should work with strings", function()
+                local s = "hello"
+                local result = s:sub(1, 3)
+                return assert.same(result, "hel")
+        end)
+        it("should handle out of bounds", function()
+                local items = {
+                        1,
+                        2,
+                        3
+                }
+                local result
+                do
+                        local _accum_0 = { }
+                        local _len_0 = 1
+                        for _index_0 = 1, 10 do
+                                local _item_0 = items[_index_0]
+                                _accum_0[_len_0] = _item_0
+                                _len_0 = _len_0 + 1
+                        end
+                        result = _accum_0
+                end
+                return assert.same(result, {
+                        1,
+                        2,
+                        3
+                })
+        end)
+        it("should create new table", function()
+                local original = {
+                        1,
+                        2,
+                        3,
+                        4,
+                        5
+                }
+                local sliced
+                do
+                        local _accum_0 = { }
+                        local _len_0 = 1
+                        for _index_0 = 2, 4 do
+                                local _item_0 = original[_index_0]
+                                _accum_0[_len_0] = _item_0
+                                _len_0 = _len_0 + 1
+                        end
+                        sliced = _accum_0
+                end
+                sliced[1] = 99
+                return assert.same(original[2], 2)
+        end)
+        it("should work with nested arrays", function()
+                local nested = {
+                        {
+                                1,
+                                2
+                        },
+                        {
+                                3,
+                                4
+                        },
+                        {
+                                5,
+                                6
+                        }
+                }
+                local result
+                do
+                        local _accum_0 = { }
+                        local _len_0 = 1
+                        for _index_0 = 1, 2 do
+                                local _item_0 = nested[_index_0]
+                                _accum_0[_len_0] = _item_0
+                                _len_0 = _len_0 + 1
+                        end
+                        result = _accum_0
+                end
+                return assert.same(result, {
+                        {
+                                1,
+                                2
+                        },
+                        {
+                                3,
+                                4
+                        }
+                })
+        end)
+        it("should slice with step simulation", function()
+                local items = {
+                        1,
+                        2,
+                        3,
+                        4,
+                        5
+                }
+                local result
+                do
+                        local _accum_0 = { }
+                        local _len_0 = 1
+                        for i = 1, #items, 2 do
+                                _accum_0[_len_0] = items[i]
+                                _len_0 = _len_0 + 1
+                        end
+                        result = _accum_0
+                end
+                return assert.same(result, {
+                        1,
+                        3,
+                        5
+                })
+        end)
+        it("should handle empty slice range", function()
+                local items = {
+                        1,
+                        2,
+                        3,
+                        4,
+                        5
+                }
+                local result
+                do
+                        local _accum_0 = { }
+                        local _len_0 = 1
+                        for _index_0 = 6, 10 do
+                                local _item_0 = items[_index_0]
+                                _accum_0[_len_0] = _item_0
+                                _len_0 = _len_0 + 1
+                        end
+                        result = _accum_0
+                end
+                return assert.same(result, { })
+        end)
+        it("should work with reverse indexing", function()
+                local items = {
+                        1,
+                        2,
+                        3,
+                        4,
+                        5
+                }
+                local last = items[#items]
+                local second_last = items[#items - 1]
+                assert.same(last, 5)
+                return assert.same(second_last, 4)
+        end)
+        it("should support slice in assignment", function()
+                local items = {
+                        1,
+                        2,
+                        3,
+                        4,
+                        5
+                }
+                local a, b, c
+                do
+                        local _accum_0 = { }
+                        local _len_0 = 1
+                        local _list_0 = {
+                                1,
+                                2,
+                                3
+                        }
+                        for _index_0 = 1, #_list_0 do
+                                local i = _list_0[_index_0]
+                                _accum_0[_len_0] = items[i]
+                                _len_0 = _len_0 + 1
+                        end
+                        a, b, c = _accum_0[1], _accum_0[2], _accum_0[3]
+                end
+                assert.same(a, 1)
+                assert.same(b, 2)
+                return assert.same(c, 3)
+        end)
+        return it("should work with table comprehensions", function()
+                local items = {
+                        1,
+                        2,
+                        3,
+                        4,
+                        5
+                }
+                local result
+                do
+                        local _tbl_0 = { }
+                        for i = 2, 4 do
+                                _tbl_0[i] = items[i]
+                        end
+                        result = _tbl_0
+                end
+                assert.same(result[2], 2)
+                assert.same(result[3], 3)
+                return assert.same(result[4], 4)
+        end)
+end)