1 files changed, 176 insertions, 0 deletions
diff --git a/test/test-suite/vararg.test.js b/test/test-suite/vararg.test.js
new file mode 100644
index 0000000..0538541
--- /dev/null
+++ b/test/test-suite/vararg.test.js
@@ -0,0 +1,176 @@
+"use strict";
+
+const lua = require('../../src/lua.js');
+const lauxlib = require('../../src/lauxlib.js');
+const lualib = require('../../src/lualib.js');
+const {to_luastring} = require("../../src/fengaricore.js");
+
+test("[test-suite] vararg: testing vararg", () => {
+    let L = lauxlib.luaL_newstate();
+    if (!L) throw Error("failed to create lua state");
+
+    let luaCode = `
+        function f(a, ...)
+          local arg = {n = select('#', ...), ...}
+          for i=1,arg.n do assert(a[i]==arg[i]) end
+          return arg.n
+        end
+
+        function c12 (...)
+          assert(arg == _G.arg)    -- no local 'arg'
+          local x = {...}; x.n = #x
+          local res = (x.n==2 and x[1] == 1 and x[2] == 2)
+          if res then res = 55 end
+          return res, 2
+        end
+
+        function vararg (...) return {n = select('#', ...), ...} end
+
+        local call = function (f, args) return f(table.unpack(args, 1, args.n)) end
+
+        assert(f() == 0)
+        assert(f({1,2,3}, 1, 2, 3) == 3)
+        assert(f({"alo", nil, 45, f, nil}, "alo", nil, 45, f, nil) == 5)
+
+        assert(c12(1,2)==55)
+        a,b = assert(call(c12, {1,2}))
+        assert(a == 55 and b == 2)
+        a = call(c12, {1,2;n=2})
+        assert(a == 55 and b == 2)
+        a = call(c12, {1,2;n=1})
+        assert(not a)
+        assert(c12(1,2,3) == false)
+        local a = vararg(call(next, {_G,nil;n=2}))
+        local b,c = next(_G)
+        assert(a[1] == b and a[2] == c and a.n == 2)
+        a = vararg(call(call, {c12, {1,2}}))
+        assert(a.n == 2 and a[1] == 55 and a[2] == 2)
+        a = call(function()end, {'+'})
+        assert(a == nil)
+
+        local t = {1, 10}
+        function t:f (...) local arg = {...}; return self[...]+#arg end
+        assert(t:f(1,4) == 3 and t:f(2) == 11)
+
+        lim = 20
+        local i, a = 1, {}
+        while i <= lim do a[i] = i+0.3; i=i+1 end
+
+        function f(a, b, c, d, ...)
+          local more = {...}
+          assert(a == 1.3 and more[1] == 5.3 and
+                 more[lim-4] == lim+0.3 and not more[lim-3])
+        end
+
+        function g(a,b,c)
+          assert(a == 1.3 and b == 2.3 and c == 3.3)
+        end
+
+        call(f, a)
+        call(g, a)
+
+        a = {}
+        i = 1
+        while i <= lim do a[i] = i; i=i+1 end
+        assert(call(math.max, a) == lim)
+    `;
+    lualib.luaL_openlibs(L);
+    if (lauxlib.luaL_loadstring(L, to_luastring(luaCode)) === lua.LUA_ERRSYNTAX)
+        throw new SyntaxError(lua.lua_tojsstring(L, -1));
+    lua.lua_call(L, 0, 0);
+});
+
+
+test("[test-suite] vararg: new-style varargs", () => {
+    let L = lauxlib.luaL_newstate();
+    if (!L) throw Error("failed to create lua state");
+
+    let luaCode = `
+        function oneless (a, ...) return ... end
+
+        function f (n, a, ...)
+          local b
+          assert(arg == _G.arg)   -- no local 'arg'
+          if n == 0 then
+            local b, c, d = ...
+            return a, b, c, d, oneless(oneless(oneless(...)))
+          else
+            n, b, a = n-1, ..., a
+            assert(b == ...)
+            return f(n, a, ...)
+          end
+        end
+
+        a,b,c,d,e = assert(f(10,5,4,3,2,1))
+        assert(a==5 and b==4 and c==3 and d==2 and e==1)
+
+        a,b,c,d,e = f(4)
+        assert(a==nil and b==nil and c==nil and d==nil and e==nil)
+    `;
+    lualib.luaL_openlibs(L);
+    if (lauxlib.luaL_loadstring(L, to_luastring(luaCode)) === lua.LUA_ERRSYNTAX)
+        throw new SyntaxError(lua.lua_tojsstring(L, -1));
+    lua.lua_call(L, 0, 0);
+});
+
+
+test("[test-suite] vararg: varargs for main chunks", () => {
+    let L = lauxlib.luaL_newstate();
+    if (!L) throw Error("failed to create lua state");
+
+    let luaCode = `
+        f = load[[ return {...} ]]
+        x = f(2,3)
+        assert(x[1] == 2 and x[2] == 3 and x[3] == nil)
+
+
+        f = load[[
+          local x = {...}
+          for i=1,select('#', ...) do assert(x[i] == select(i, ...)) end
+          assert(x[select('#', ...)+1] == nil)
+          return true
+        ]]
+
+        assert(f("a", "b", nil, {}, assert))
+        assert(f())
+
+        a = {select(3, table.unpack{10,20,30,40})}
+        assert(#a == 2 and a[1] == 30 and a[2] == 40)
+        a = {select(1)}
+        assert(next(a) == nil)
+        a = {select(-1, 3, 5, 7)}
+        assert(a[1] == 7 and a[2] == nil)
+        a = {select(-2, 3, 5, 7)}
+        assert(a[1] == 5 and a[2] == 7 and a[3] == nil)
+        pcall(select, 10000)
+        pcall(select, -10000)
+    `;
+    lualib.luaL_openlibs(L);
+    if (lauxlib.luaL_loadstring(L, to_luastring(luaCode)) === lua.LUA_ERRSYNTAX)
+        throw new SyntaxError(lua.lua_tojsstring(L, -1));
+    lua.lua_call(L, 0, 0);
+});
+
+
+test("[test-suite] vararg: bug in 5.2.2", () => {
+    let L = lauxlib.luaL_newstate();
+    if (!L) throw Error("failed to create lua state");
+
+    let luaCode = `
+        function f(p1, p2, p3, p4, p5, p6, p7, p8, p9, p10,
+        p11, p12, p13, p14, p15, p16, p17, p18, p19, p20,
+        p21, p22, p23, p24, p25, p26, p27, p28, p29, p30,
+        p31, p32, p33, p34, p35, p36, p37, p38, p39, p40,
+        p41, p42, p43, p44, p45, p46, p48, p49, p50, ...)
+          local a1,a2,a3,a4,a5,a6,a7
+          local a8,a9,a10,a11,a12,a13,a14
+        end
+
+        -- assertion fail here
+        f()
+    `;
+    lualib.luaL_openlibs(L);
+    if (lauxlib.luaL_loadstring(L, to_luastring(luaCode)) === lua.LUA_ERRSYNTAX)
+        throw new SyntaxError(lua.lua_tojsstring(L, -1));
+    lua.lua_call(L, 0, 0);
+});