tests/tests.js: don't shell out to luac for compiling

1 files changed, 13 insertions, 19 deletions

diff --git a/tests/tests.js b/tests/tests.js
index 75e5e19..6c799e5 100644
--- a/tests/tests.js
+++ b/tests/tests.js
@@ -2,24 +2,18 @@
 
 global.WEB = false;
 
-const fs             = require('fs');
-const child_process  = require('child_process');
-const tmp            = require('tmp');
-
-const lua            = require("../src/lua.js");
-const lauxlib        = require("../src/lauxlib.js");
-
-const toByteCode = function (luaCode) {
-    var luaFile = tmp.fileSync();
-
-    fs.writeSync(luaFile.fd, luaCode);
-
-    child_process.execSync(`luac -o ${luaFile.name}.bc ${luaFile.name}`);
-
-    let b = fs.readFileSync(`${luaFile.name}.bc`);
-    let dv = new DataView(b.buffer.slice(b.byteOffset, b.byteOffset + b.byteLength));
-
-    return dv;
+const lua     = require("../src/lua.js");
+const lauxlib = require("../src/lauxlib.js");
+
+const toByteCode = function(luaCode) {
+    let L = getState(luaCode);
+    let b = [];
+    if (lua.lua_dump(L, function(L, b, size, B) {
+	    B.push(...b.slice(0, size));
+	    return 0;
+	}, b, false) !== 0)
+        throw Error("unable to dump given function");
+    return new DataView(Uint8Array.from(b).buffer);
 };
 
 const getState = function(luaCode) {
@@ -28,7 +22,7 @@ const getState = function(luaCode) {
         throw Error("unable to create lua_State");
 
     if (lauxlib.luaL_loadstring(L, lua.to_luastring(luaCode)) !== lua.LUA_OK)
-        return Error(lua.lua_tojsstring(L, -1));
+        throw Error(lua.lua_tojsstring(L, -1));
 
     return L;
 };