[test-suite] code.js passes

1 files changed, 554 insertions, 0 deletions

diff --git a/tests/test-suite/code.js b/tests/test-suite/code.js
new file mode 100644
index 0000000..4438cd2
--- /dev/null
+++ b/tests/test-suite/code.js
@@ -0,0 +1,554 @@
+"use strict";
+
+const test     = require('tape');
+
+global.WEB = false;
+
+const lua     = require('../../src/lua.js');
+const lauxlib = require('../../src/lauxlib.js');
+const lualib  = require('../../src/lualib.js');
+
+const ltests  = require('./ltests.js');
+
+
+test("[test-suite] code: testing reuse in constant table", function (t) {
+    let luaCode = `
+        local function checkKlist (func, list)
+          local k = T.listk(func)
+          assert(#k == #list)
+          for i = 1, #k do
+            assert(k[i] == list[i] and math.type(k[i]) == math.type(list[i]))
+          end
+        end
+
+        local function foo ()
+          local a
+          a = 3;
+          a = 0; a = 0.0; a = -7 + 7
+          a = 3.78/4; a = 3.78/4
+          a = -3.78/4; a = 3.78/4; a = -3.78/4
+          a = -3.79/4; a = 0.0; a = -0;
+          a = 3; a = 3.0; a = 3; a = 3.0
+        end
+
+        checkKlist(foo, {3, 0, 0.0, 3.78/4, -3.78/4, -3.79/4, 3.0})
+    `, L;
+    
+    t.plan(2);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lualib.luaL_openlibs(L);
+
+        ltests.luaopen_tests(L);
+
+        lauxlib.luaL_loadstring(L, lua.to_luastring(luaCode));
+
+    }, "Lua program loaded without error");
+
+    t.doesNotThrow(function () {
+
+        lua.lua_call(L, 0, -1);
+
+    }, "Lua program ran without error");
+});
+
+
+const prefix = `
+    function check (f, ...)
+      local arg = {...}
+      local c = T.listcode(f)
+      for i=1, #arg do
+        print(arg[i], c[i])
+        assert(string.find(c[i], '- '..arg[i]..' *%d'))
+      end
+      assert(c[#arg+2] == nil)
+    end
+
+
+    function checkequal (a, b)
+      a = T.listcode(a)
+      b = T.listcode(b)
+      for i = 1, #a do
+        a[i] = string.gsub(a[i], '%b()', '')   -- remove line number
+        b[i] = string.gsub(b[i], '%b()', '')   -- remove line number
+        assert(a[i] == b[i])
+      end
+    end
+`;
+
+test("[test-suite] code: some basic instructions", function (t) {
+    let luaCode = `
+        check(function ()
+          (function () end){f()}
+        end, 'CLOSURE', 'NEWTABLE', 'GETTABUP', 'CALL', 'SETLIST', 'CALL', 'RETURN')
+    `, L;
+    
+    t.plan(2);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lualib.luaL_openlibs(L);
+
+        ltests.luaopen_tests(L);
+
+        lauxlib.luaL_loadstring(L, lua.to_luastring(prefix + luaCode));
+
+    }, "Lua program loaded without error");
+
+    t.doesNotThrow(function () {
+
+        lua.lua_call(L, 0, -1);
+
+    }, "Lua program ran without error");
+});
+
+
+test("[test-suite] code: sequence of LOADNILs", function (t) {
+    let luaCode = `
+        check(function ()
+          local a,b,c
+          local d; local e;
+          local f,g,h;
+          d = nil; d=nil; b=nil; a=nil; c=nil;
+        end, 'LOADNIL', 'RETURN')
+
+        check(function ()
+          local a,b,c,d = 1,1,1,1
+          d=nil;c=nil;b=nil;a=nil
+        end, 'LOADK', 'LOADK', 'LOADK', 'LOADK', 'LOADNIL', 'RETURN')
+
+        do
+          local a,b,c,d = 1,1,1,1
+          d=nil;c=nil;b=nil;a=nil
+          assert(a == nil and b == nil and c == nil and d == nil)
+        end
+    `, L;
+    
+    t.plan(2);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lualib.luaL_openlibs(L);
+
+        ltests.luaopen_tests(L);
+
+        lauxlib.luaL_loadstring(L, lua.to_luastring(prefix + luaCode));
+
+    }, "Lua program loaded without error");
+
+    t.doesNotThrow(function () {
+
+        lua.lua_call(L, 0, -1);
+
+    }, "Lua program ran without error");
+});
+
+
+test("[test-suite] code: single return", function (t) {
+    let luaCode = `
+        check (function (a,b,c) return a end, 'RETURN')
+    `, L;
+    
+    t.plan(2);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lualib.luaL_openlibs(L);
+
+        ltests.luaopen_tests(L);
+
+        lauxlib.luaL_loadstring(L, lua.to_luastring(prefix + luaCode));
+
+    }, "Lua program loaded without error");
+
+    t.doesNotThrow(function () {
+
+        lua.lua_call(L, 0, -1);
+
+    }, "Lua program ran without error");
+});
+
+
+test("[test-suite] code: infinite loops", function (t) {
+    let luaCode = `
+        check(function () while true do local a = -1 end end,
+        'LOADK', 'JMP', 'RETURN')
+
+        check(function () while 1 do local a = -1 end end,
+        'LOADK', 'JMP', 'RETURN')
+
+        check(function () repeat local x = 1 until true end,
+        'LOADK', 'RETURN')
+    `, L;
+    
+    t.plan(2);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lualib.luaL_openlibs(L);
+
+        ltests.luaopen_tests(L);
+
+        lauxlib.luaL_loadstring(L, lua.to_luastring(prefix + luaCode));
+
+    }, "Lua program loaded without error");
+
+    t.doesNotThrow(function () {
+
+        lua.lua_call(L, 0, -1);
+
+    }, "Lua program ran without error");
+});
+
+
+test("[test-suite] code: concat optimization", function (t) {
+    let luaCode = `
+        check(function (a,b,c,d) return a..b..c..d end,
+          'MOVE', 'MOVE', 'MOVE', 'MOVE', 'CONCAT', 'RETURN')
+    `, L;
+    
+    t.plan(2);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lualib.luaL_openlibs(L);
+
+        ltests.luaopen_tests(L);
+
+        lauxlib.luaL_loadstring(L, lua.to_luastring(prefix + luaCode));
+
+    }, "Lua program loaded without error");
+
+    t.doesNotThrow(function () {
+
+        lua.lua_call(L, 0, -1);
+
+    }, "Lua program ran without error");
+});
+
+
+test("[test-suite] code: not", function (t) {
+    let luaCode = `
+        check(function () return not not nil end, 'LOADBOOL', 'RETURN')
+        check(function () return not not false end, 'LOADBOOL', 'RETURN')
+        check(function () return not not true end, 'LOADBOOL', 'RETURN')
+        check(function () return not not 1 end, 'LOADBOOL', 'RETURN')
+    `, L;
+    
+    t.plan(2);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lualib.luaL_openlibs(L);
+
+        ltests.luaopen_tests(L);
+
+        lauxlib.luaL_loadstring(L, lua.to_luastring(prefix + luaCode));
+
+    }, "Lua program loaded without error");
+
+    t.doesNotThrow(function () {
+
+        lua.lua_call(L, 0, -1);
+
+    }, "Lua program ran without error");
+});
+
+
+test("[test-suite] code: direct access to locals", function (t) {
+    let luaCode = `
+        check(function ()
+          local a,b,c,d
+          a = b*2
+          c[2], a[b] = -((a + d/2 - a[b]) ^ a.x), b
+        end,
+          'LOADNIL',
+          'MUL',
+          'DIV', 'ADD', 'GETTABLE', 'SUB', 'GETTABLE', 'POW',
+            'UNM', 'SETTABLE', 'SETTABLE', 'RETURN')
+    `, L;
+    
+    t.plan(2);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lualib.luaL_openlibs(L);
+
+        ltests.luaopen_tests(L);
+
+        lauxlib.luaL_loadstring(L, lua.to_luastring(prefix + luaCode));
+
+    }, "Lua program loaded without error");
+
+    t.doesNotThrow(function () {
+
+        lua.lua_call(L, 0, -1);
+
+    }, "Lua program ran without error");
+});
+
+
+test("[test-suite] code: direct access to constants", function (t) {
+    let luaCode = `
+        check(function ()
+          local a,b
+          a.x = 3.2
+          a.x = b
+          a[b] = 'x'
+        end,
+          'LOADNIL', 'SETTABLE', 'SETTABLE', 'SETTABLE', 'RETURN')
+
+        check(function ()
+          local a,b
+          a = 1 - a
+          b = 1/a
+          b = 5-4
+        end,
+          'LOADNIL', 'SUB', 'DIV', 'LOADK', 'RETURN')
+
+        check(function ()
+          local a,b
+          a[true] = false
+        end,
+          'LOADNIL', 'SETTABLE', 'RETURN')
+    `, L;
+    
+    t.plan(2);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lualib.luaL_openlibs(L);
+
+        ltests.luaopen_tests(L);
+
+        lauxlib.luaL_loadstring(L, lua.to_luastring(prefix + luaCode));
+
+    }, "Lua program loaded without error");
+
+    t.doesNotThrow(function () {
+
+        lua.lua_call(L, 0, -1);
+
+    }, "Lua program ran without error");
+});
+
+
+test("[test-suite] code: constant folding", function (t) {
+    let luaCode = `
+        local function checkK (func, val)
+          check(func, 'LOADK', 'RETURN')
+          local k = T.listk(func)
+          assert(#k == 1 and k[1] == val and math.type(k[1]) == math.type(val))
+          assert(func() == val)
+        end
+        checkK(function () return 0.0 end, 0.0)
+        checkK(function () return 0 end, 0)
+        checkK(function () return -0//1 end, 0)
+        checkK(function () return 3^-1 end, 1/3)
+        checkK(function () return (1 + 1)^(50 + 50) end, 2^100)
+        checkK(function () return (-2)^(31 - 2) end, -0x20000000 + 0.0)
+        checkK(function () return (-3^0 + 5) // 3.0 end, 1.0)
+        checkK(function () return -3 % 5 end, 2)
+        checkK(function () return -((2.0^8 + -(-1)) % 8)/2 * 4 - 3 end, -5.0)
+        checkK(function () return -((2^8 + -(-1)) % 8)//2 * 4 - 3 end, -7.0)
+        checkK(function () return 0xF0.0 | 0xCC.0 ~ 0xAA & 0xFD end, 0xF4)
+        checkK(function () return ~(~0xFF0 | 0xFF0) end, 0)
+        checkK(function () return ~~-100024.0 end, -100024)
+        checkK(function () return ((100 << 6) << -4) >> 2 end, 100)
+    `, L;
+    
+    t.plan(2);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lualib.luaL_openlibs(L);
+
+        ltests.luaopen_tests(L);
+
+        lauxlib.luaL_loadstring(L, lua.to_luastring(prefix + luaCode));
+
+    }, "Lua program loaded without error");
+
+    t.doesNotThrow(function () {
+
+        lua.lua_call(L, 0, -1);
+
+    }, "Lua program ran without error");
+});
+
+
+test("[test-suite] code: no folding", function (t) {
+    let luaCode = `
+        check(function () return -0.0 end, 'LOADK', 'UNM', 'RETURN')
+        check(function () return 3/0 end, 'DIV', 'RETURN')
+        check(function () return 0%0 end, 'MOD', 'RETURN')
+        check(function () return -4//0 end, 'IDIV', 'RETURN')
+    `, L;
+    
+    t.plan(2);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lualib.luaL_openlibs(L);
+
+        ltests.luaopen_tests(L);
+
+        lauxlib.luaL_loadstring(L, lua.to_luastring(prefix + luaCode));
+
+    }, "Lua program loaded without error");
+
+    t.doesNotThrow(function () {
+
+        lua.lua_call(L, 0, -1);
+
+    }, "Lua program ran without error");
+});
+
+
+test("[test-suite] code: bug in constant folding for 5.1", function (t) {
+    let luaCode = `
+        check(function () return -nil end, 'LOADNIL', 'UNM', 'RETURN')
+
+
+        check(function ()
+          local a,b,c
+          b[c], a = c, b
+          b[a], a = c, b
+          a, b = c, a
+          a = a
+        end, 
+          'LOADNIL',
+          'MOVE', 'MOVE', 'SETTABLE',
+          'MOVE', 'MOVE', 'MOVE', 'SETTABLE',
+          'MOVE', 'MOVE', 'MOVE',
+          -- no code for a = a
+          'RETURN')
+    `, L;
+    
+    t.plan(2);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lualib.luaL_openlibs(L);
+
+        ltests.luaopen_tests(L);
+
+        lauxlib.luaL_loadstring(L, lua.to_luastring(prefix + luaCode));
+
+    }, "Lua program loaded without error");
+
+    t.doesNotThrow(function () {
+
+        lua.lua_call(L, 0, -1);
+
+    }, "Lua program ran without error");
+});
+
+
+test("[test-suite] code: x == nil , x ~= nil", function (t) {
+    let luaCode = `
+        checkequal(function () if (a==nil) then a=1 end; if a~=nil then a=1 end end,
+                   function () if (a==9) then a=1 end; if a~=9 then a=1 end end)
+
+        check(function () if a==nil then a='a' end end,
+            'GETTABUP', 'EQ', 'JMP', 'SETTABUP', 'RETURN')
+
+        checkequal(function () local a; if not (a or b) then b=a end end,
+           function () local a; if (not a and not b) then b=a end end)
+
+        checkequal(function (l) local a; return 0 <= a and a <= l end,
+                   function (l) local a; return not (not(a >= 0) or not(a <= l)) end)
+    `, L;
+    
+    t.plan(2);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lualib.luaL_openlibs(L);
+
+        ltests.luaopen_tests(L);
+
+        lauxlib.luaL_loadstring(L, lua.to_luastring(prefix + luaCode));
+
+    }, "Lua program loaded without error");
+
+    t.doesNotThrow(function () {
+
+        lua.lua_call(L, 0, -1);
+
+    }, "Lua program ran without error");
+});
+
+
+test("[test-suite] code: if-goto optimizations", function (t) {
+    let luaCode = `
+        check(function (a, b, c, d, e)
+                if a == b then goto l1
+                elseif a == c then goto l2
+                elseif a == d then goto l2
+                else if a == e then goto l3
+                     else goto l3
+                     end
+                end
+                ::l1:: ::l2:: ::l3:: ::l4:: 
+        end, 'EQ', 'JMP', 'EQ', 'JMP', 'EQ', 'JMP', 'EQ', 'JMP', 'JMP', 'RETURN')
+
+        checkequal(
+        function (a) while a < 10 do a = a + 1 end end,
+        function (a) ::L2:: if not(a < 10) then goto L1 end; a = a + 1;
+                        goto L2; ::L1:: end
+        )
+
+        checkequal(
+        function (a) while a < 10 do a = a + 1 end end,
+        function (a) while true do if not(a < 10) then break end; a = a + 1; end end
+        )
+    `, L;
+    
+    t.plan(2);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lualib.luaL_openlibs(L);
+
+        ltests.luaopen_tests(L);
+
+        lauxlib.luaL_loadstring(L, lua.to_luastring(prefix + luaCode));
+
+    }, "Lua program loaded without error");
+
+    t.doesNotThrow(function () {
+
+        lua.lua_call(L, 0, -1);
+
+    }, "Lua program ran without error");
+});