# HG changeset patch
# User Jaroslav Tulach <jaroslav.tulach@apidesign.org>
# Date 1425030100 -3600
# Node ID df885b256382bfbff2b19f07ba70751b15e9e817
# Parent  64fa3f15cb499e25248c9ea18e04eba1e4e50675
First StackMapper test

diff -r 64fa3f15cb49 -r df885b256382 rt/vm/src/test/java/org/apidesign/vm4brwsr/StackMapperTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rt/vm/src/test/java/org/apidesign/vm4brwsr/StackMapperTest.java	Fri Feb 27 10:41:40 2015 +0100
@@ -0,0 +1,72 @@
+/**
+ * Back 2 Browser Bytecode Translator
+ * Copyright (C) 2012-2015 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. Look for COPYING file in the top folder.
+ * If not, see http://opensource.org/licenses/GPL-2.0.
+ */
+package org.apidesign.vm4brwsr;
+
+import javax.script.ScriptEngine;
+import javax.script.ScriptEngineManager;
+import static org.testng.Assert.*;
+import org.testng.annotations.Test;
+
+/**
+ *
+ * @author Jaroslav Tulach
+ */
+public class StackMapperTest {
+    
+    public StackMapperTest() {
+    }
+    
+    @Test public void replaceValueThatAnotherReplaceDependsOn()
+    throws Exception {
+        StringBuilder sb = new StringBuilder();
+        
+        StackMapper smapper = new StackMapper();
+        
+        smapper.assign(sb, VarType.INTEGER, "0");
+        
+        smapper.assign(sb, VarType.REFERENCE, "arr");
+        smapper.assign(sb, VarType.INTEGER, "33");
+        smapper.replace(sb, VarType.INTEGER, "@2[@1]", 
+            smapper.popI(), smapper.getA(0)
+        );
+
+        smapper.replace(sb, VarType.INTEGER, "(@1) + (@2)", 
+            smapper.getI(1), smapper.popI()
+        );
+        
+        smapper.assign(sb, VarType.REFERENCE, "arr");
+        smapper.assign(sb, VarType.INTEGER, "22");
+        smapper.replace(sb, VarType.INTEGER, "@2[@1]", 
+            smapper.popI(), smapper.getA(0)
+        );
+        
+        smapper.replace(sb, VarType.INTEGER, "(@1) + (@2)", 
+            smapper.getI(1), smapper.popI()
+        );
+        
+        smapper.flush(sb);
+        
+        ScriptEngineManager sem = new ScriptEngineManager();
+        ScriptEngine em = sem.getEngineByMimeType("text/javascript");
+        Object ret = em.eval("var arr= []; arr[33] = 40; arr[22] = 2; " + sb + "; stI0;");
+        
+        assertTrue(ret instanceof Number, "Result is number: " + ret);
+        assertEquals(((Number)ret).intValue(), 42, "Right value");
+    }
+    
+}