1 files changed, 246 insertions, 0 deletions

diff --git a/spec/outputs/test/named_varargs_spec.lua b/spec/outputs/test/named_varargs_spec.lua
new file mode 100644
index 0000000..2a71cea
--- /dev/null
+++ b/spec/outputs/test/named_varargs_spec.lua
@@ -0,0 +1,246 @@
+return describe("named varargs", function()
+        it("should store varargs in named table", function()
+                local f
+                f = function(...)
+                        local t = {
+                                n = select("#", ...),
+                                ...
+                        }
+                        assert.same(t.n, 3)
+                        assert.same(t[1], 1)
+                        assert.same(t[2], 2)
+                        return assert.same(t[3], 3)
+                end
+                return f(1, 2, 3)
+        end)
+        it("should handle string arguments", function()
+                local f
+                f = function(...)
+                        local args = {
+                                n = select("#", ...),
+                                ...
+                        }
+                        assert.same(args.n, 3)
+                        assert.same(args[1], "a")
+                        assert.same(args[2], "b")
+                        return assert.same(args[3], "c")
+                end
+                return f("a", "b", "c")
+        end)
+        it("should handle empty varargs", function()
+                local f
+                f = function(...)
+                        local t = {
+                                n = select("#", ...),
+                                ...
+                        }
+                        assert.same(t.n, 0)
+                        return assert.same(#t, 0)
+                end
+                return f()
+        end)
+        it("should preserve nil values", function()
+                local f
+                f = function(...)
+                        local args = {
+                                n = select("#", ...),
+                                ...
+                        }
+                        assert.same(args.n, 5)
+                        assert.same(args[1], 1)
+                        assert.same(args[2], nil)
+                        assert.same(args[3], 3)
+                        assert.same(args[4], nil)
+                        return assert.same(args[5], 5)
+                end
+                return f(1, nil, 3, nil, 5)
+        end)
+        it("should work with loop", function()
+                local f
+                f = function(...)
+                        local t = {
+                                n = select("#", ...),
+                                ...
+                        }
+                        local sum = 0
+                        for i = 1, t.n do
+                                if type(t[i]) == "number" then
+                                        sum = sum + t[i]
+                                end
+                        end
+                        return sum
+                end
+                local result = f(1, 2, 3, 4, 5)
+                return assert.same(result, 15)
+        end)
+        it("should handle mixed types", function()
+                local f
+                f = function(...)
+                        local args = {
+                                n = select("#", ...),
+                                ...
+                        }
+                        local types
+                        do
+                                local _accum_0 = { }
+                                local _len_0 = 1
+                                for i = 1, args.n do
+                                        _accum_0[_len_0] = type(args[i])
+                                        _len_0 = _len_0 + 1
+                                end
+                                types = _accum_0
+                        end
+                        return types
+                end
+                local result = f("string", 123, true, nil, { })
+                return assert.same(result, {
+                        "string",
+                        "number",
+                        "boolean",
+                        "nil",
+                        "table"
+                })
+        end)
+        it("should work with table access", function()
+                local f
+                f = function(...)
+                        local t = {
+                                n = select("#", ...),
+                                ...
+                        }
+                        local first = t[1]
+                        local last = t[t.n]
+                        return {
+                                first,
+                                last
+                        }
+                end
+                local result = f(1, 2, 3, 4, 5)
+                return assert.same(result, {
+                        1,
+                        5
+                })
+        end)
+        it("should support select with named args", function()
+                local f
+                f = function(...)
+                        local args = {
+                                n = select("#", ...),
+                                ...
+                        }
+                        local second = select(2, table.unpack(args))
+                        return second
+                end
+                local result = f("a", "b", "c")
+                return assert.same(result, "b")
+        end)
+        it("should work with pcall", function()
+                local f
+                f = function(...)
+                        local t = {
+                                n = select("#", ...),
+                                ...
+                        }
+                        local success = true
+                        for i = 1, t.n do
+                                if t[i] == nil then
+                                        success = false
+                                end
+                        end
+                        return success
+                end
+                local result = f(1, nil, 3)
+                return assert.is_false(result)
+        end)
+        it("should handle function results", function()
+                local g
+                g = function()
+                        return 1, 2, 3
+                end
+                local f
+                f = function(...)
+                        local t = {
+                                n = select("#", ...),
+                                ...
+                        }
+                        return t.n
+                end
+                local result = f(g())
+                return assert.same(result, 3)
+        end)
+        it("should work with unpacking", function()
+                local f
+                f = function(...)
+                        local args = {
+                                n = select("#", ...),
+                                ...
+                        }
+                        return {
+                                table.unpack(args)
+                        }
+                end
+                local result = f("a", "b", "c")
+                return assert.same(result, {
+                        "a",
+                        "b",
+                        "c"
+                })
+        end)
+        it("should support passing named varargs to another function", function()
+                local outer
+                outer = function(...)
+                        local t = {
+                                n = select("#", ...),
+                                ...
+                        }
+                        return inner((table.unpack(t)))
+                end
+                local inner
+                inner = function(a, b, c)
+                        return {
+                                a,
+                                b,
+                                c
+                        }
+                end
+                local result = outer(1, 2, 3)
+                return assert.same(result, {
+                        1,
+                        2,
+                        3
+                })
+        end)
+        it("should work with default parameter", function()
+                local f
+                f = function(x, ...)
+                        if x == nil then
+                                x = 10
+                        end
+                        local t = {
+                                n = select("#", ...),
+                                ...
+                        }
+                        return x + t[1] or 0
+                end
+                local result = f(5, 15)
+                return assert.same(result, 20)
+        end)
+        return it("should handle single argument", function()
+                local f
+                f = function(...)
+                        local t = {
+                                n = select("#", ...),
+                                ...
+                        }
+                        return {
+                                t.n,
+                                t[1]
+                        }
+                end
+                local result = f(42)
+                return assert.same(result, {
+                        1,
+                        42
+                })
+        end)
+end)