From a8a9d9eb1ef3ea939004bc1a684118d916e1e0ca Mon Sep 17 00:00:00 2001
From: Volker Berlin <volker.berlin@googlemail.com>
Date: Sun, 25 Nov 2018 17:07:34 +0100
Subject: [PATCH] Tests for duplicate stack values via native library with
 multiple return values.

---
 .../jwebassembly/runtime/Stacks.java          | 63 +++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 test/de/inetsoftware/jwebassembly/runtime/Stacks.java

diff --git a/test/de/inetsoftware/jwebassembly/runtime/Stacks.java b/test/de/inetsoftware/jwebassembly/runtime/Stacks.java
new file mode 100644
index 0000000..9827246
--- /dev/null
+++ b/test/de/inetsoftware/jwebassembly/runtime/Stacks.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2018 Volker Berlin (i-net software)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package de.inetsoftware.jwebassembly.runtime;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.junit.Assume;
+import org.junit.ClassRule;
+import org.junit.Ignore;
+import org.junit.Test;
+import org.junit.runners.Parameterized.Parameters;
+
+import de.inetsoftware.jwebassembly.ScriptEngine;
+import de.inetsoftware.jwebassembly.WasmRule;
+import de.inetsoftware.jwebassembly.api.annotation.Export;
+
+public class Stacks extends AbstractBaseTest {
+
+    @ClassRule
+    public static WasmRule rule = new WasmRule( TestClass.class );
+
+    public Stacks( ScriptEngine script, String method, Object[] params ) {
+        super( rule, script, method, params );
+    }
+
+    @Parameters( name = "{0}-{1}" )
+    public static Collection<Object[]> data() {
+        ArrayList<Object[]> list = new ArrayList<>();
+        for( ScriptEngine[] val : ScriptEngine.testParams() ) {
+            ScriptEngine script = val[0];
+            if( script == ScriptEngine.SpiderMonkey ) { //TODO SpiderMonkey does not support multiple return values
+                continue;
+            }
+            addParam( list, script, "simple" );
+        }
+        return list;
+    }
+
+    static class TestClass {
+
+        @Export
+        static int simple() {
+            int a = 1;
+            int b = 2;
+            a = b = 3;
+            return b;
+        }
+    }
+}