[Parsing tests] Unary op, LOADBOOL

3 files changed, 36 insertions, 5 deletions

diff --git a/src/lcode.js b/src/lcode.js
index 3c6500d..f69bc34 100644
--- a/src/lcode.js
+++ b/src/lcode.js
@@ -1092,16 +1092,16 @@ const codecomp = function(fs, opr, e1, e2) {
 const luaK_prefix = function(fs, op, e, line) {
     let ef = new lparser.expdesc();
     ef.k = lparser.expkind.VKINT;
-    ef.u.ival = e.u.nval = e.u.info = 0;
-    e.t = NO_JUMP;
-    e.f = NO_JUMP;
+    ef.u.ival = ef.u.nval = ef.u.info = 0;
+    ef.t = NO_JUMP;
+    ef.f = NO_JUMP;
     switch (op) {
         case UnOpr.OPR_MINUS: case UnOpr.OPR_BNOT:  /* use 'ef' as fake 2nd operand */
             if (constfolding(fs, op + lua.LUA_OPUNM, e, ef))
                 break;
             /* FALLTHROUGH */
         case UnOpr.OPR_LEN:
-            codeunexpval(fs, op + UnOpr.OP_UNM, e, line);
+            codeunexpval(fs, op + OpCodesI.OP_UNM, e, line);
             break;
         case UnOpr.OPR_NOT: codenot(fs, e); break;
     }
diff --git a/src/lparser.js b/src/lparser.js
index 1e454e0..86f32f8 100644
--- a/src/lparser.js
+++ b/src/lparser.js
@@ -1556,5 +1556,6 @@ const luaY_parser = function(L, z, buff, dyd, name, firstchar) {
 
 module.exports.Dyndata     = Dyndata;
 module.exports.expkind     = expkind;
+module.exports.expdesc     = expdesc;
 module.exports.luaY_parser = luaY_parser;
 module.exports.vkisinreg   = vkisinreg;
\ No newline at end of file
diff --git a/tests/lexparse.js b/tests/lexparse.js
index 2604e72..1a1a7b3 100644
--- a/tests/lexparse.js
+++ b/tests/lexparse.js
@@ -10,6 +10,7 @@ const lapi       = require("../src/lapi.js");
 const lauxlib    = require("../src/lauxlib.js");
 const linit      = require('../src/linit.js');
 
+// Roughly the same tests as test/lvm.js to cover all opcodes
 
 test('LOADK, RETURN', function (t) {
     let luaCode = `
@@ -97,4 +98,33 @@ test('Binary op', function (t) {
         "Program output is correct"
     );
 
-});
\ No newline at end of file
+});
+
+
+test('Unary op, LOADBOOL', function (t) {
+    let luaCode = `
+        local a = 5
+        local b = false
+        return -a, not b, ~a
+    `, L;
+    
+    t.plan(1);
+
+    // t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        linit.luaL_openlibs(L);
+
+        lapi.lua_load(L, null, luaCode, "test", "text");
+
+        lapi.lua_call(L, 0, -1);
+
+    // }, "JS Lua program ran without error");
+
+    t.deepEqual(
+        L.stack.slice(L.top - 3, L.top).map(e => e.value),
+        [-5, true, -6],
+        "Program output is correct"
+    );
+});