Add bytecode generation tests

test/java/org/luaj/luajc/TestLuaJC.java

@@ -37,13 +37,13 @@ public class TestLuaJC {
 	// create the script
 	public static String name = "script";
 	public static String script =
-		"local a = 1\n"+
-		"local b\n"+
-		"function c()\n"+
-		"	b=5\n" +
-		"	return a\n"+
+		"local a = unpack()\n"+   
+		"local b = c and { d = e }\n"+
+		"local f\n"+
+		"local function g()\n"+
+		"     return f\n"+
 		"end\n"+
-		"return c(),b\n";
+		"";
 		
 	public static void main(String[] args) throws Exception {
 		System.out.println(script);

test/junit/org/luaj/vm2/FragmentsTest.java

@@ -398,5 +398,14 @@ public class FragmentsTest extends TestSuite {
 					"end\n"+
 					"return c(),b\n" );			
 		}
+		
+		public void testUninitializedAroundBranch() {
+			runFragment( LuaValue.valueOf(333), 
+					"local state\n"+
+					"if _G then\n"+
+					"    state = 333\n"+
+					"end\n"+
+					"return state\n" );
+		}
 	}
 }