diff --git a/js/js.tests/test/org/jetbrains/k2js/test/semantics/RegressionMergeEcmaTest.java b/js/js.tests/test/org/jetbrains/k2js/test/semantics/RegressionMergeEcmaTest.java
new file mode 100644
index 00000000000..1421889755c
--- /dev/null
+++ b/js/js.tests/test/org/jetbrains/k2js/test/semantics/RegressionMergeEcmaTest.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2010-2013 JetBrains s.r.o.
+ *
+ * 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 org.jetbrains.k2js.test.semantics;
+
+import org.jetbrains.k2js.test.SingleFileTranslationTest;
+
+public class RegressionMergeEcmaTest extends SingleFileTranslationTest {
+    public RegressionMergeEcmaTest() {
+        super("mergeEcma/");
+    }
+
+    public void testObjectWithMethods() throws Exception {
+        fooBoxTest();
+    }
+
+    public void testEcmaDelegate() throws Exception {
+        checkFooBoxIsOk();
+    }
+
+    public void testEcmaObject() throws Exception {
+        checkFooBoxIsOk();
+    }
+
+    public void testEcmaSimple() throws Exception {
+        checkFooBoxIsOk();
+    }
+
+    public void testMethodOverride() throws Exception {
+        checkFooBoxIsOk();
+    }
+
+    public void testMethodInClass() throws Exception {
+        checkFooBoxIsOk();
+    }
+
+    public void testGetSetProperty() throws Exception {
+        checkFooBoxIsOk();
+    }
+
+    public void testRootValInit() throws Exception {
+        checkFooBoxIsOk();
+    }
+
+    //TODO
+    public void TestRootPackageValInit() throws Exception {
+        checkFooBoxIsOk();
+    }
+
+    public void testClassInitializer() throws Exception {
+        checkFooBoxIsOk();
+    }
+
+    public void testExtensionClass() throws Exception {
+        checkFooBoxIsOk();
+    }
+}
diff --git a/js/js.translator/testFiles/mergeEcma/cases/classInitializer.kt b/js/js.translator/testFiles/mergeEcma/cases/classInitializer.kt
new file mode 100644
index 00000000000..e1c6b1e02f8
--- /dev/null
+++ b/js/js.translator/testFiles/mergeEcma/cases/classInitializer.kt
@@ -0,0 +1,19 @@
+package foo
+
+class B(val name: String)
+
+class A(val a: Int, var b: B) {
+    var copyB: B
+    {
+        copyB = b
+    }
+}
+
+fun box(): String {
+    val a = A(5, B("OK"))
+    if (a.a != 5) return "a.a != 5, it: ${a.a}"
+    if (a.b.name != "OK") return "a.b.name != 'OK', it: ${a.b.name}"
+    if (a.copyB!!.name != "OK") return "a.b.name != 'OK', it: ${a.copyB!!.name}"
+
+    return "OK"
+}
\ No newline at end of file
diff --git a/js/js.translator/testFiles/mergeEcma/cases/ecmaDelegate.kt b/js/js.translator/testFiles/mergeEcma/cases/ecmaDelegate.kt
new file mode 100644
index 00000000000..8378be611ee
--- /dev/null
+++ b/js/js.translator/testFiles/mergeEcma/cases/ecmaDelegate.kt
@@ -0,0 +1,21 @@
+package foo
+
+class Delegate {
+    var inner = 1
+    fun get(t: Any?, p: PropertyMetadata): Int = inner
+    fun set(t: Any?, p: PropertyMetadata, i: Int) { inner = i }
+}
+
+val p = Delegate()
+
+class A {
+    var prop: Int by p
+}
+
+fun box(): String {
+  val c = A()
+  if(c.prop != 1) return "fail get"
+  c.prop = 2
+  if (c.prop != 2) return "fail set"
+  return "OK"
+}
diff --git a/js/js.translator/testFiles/mergeEcma/cases/ecmaObject.kt b/js/js.translator/testFiles/mergeEcma/cases/ecmaObject.kt
new file mode 100644
index 00000000000..22655927dd7
--- /dev/null
+++ b/js/js.translator/testFiles/mergeEcma/cases/ecmaObject.kt
@@ -0,0 +1,14 @@
+package foo
+
+open class A(val name: String) {
+    fun foo(): String {
+        return name
+    }
+}
+
+object B : A("OK")
+
+fun box(): String {
+    val OK = B.foo()
+    return OK
+}
\ No newline at end of file
diff --git a/js/js.translator/testFiles/mergeEcma/cases/ecmaSimple.kt b/js/js.translator/testFiles/mergeEcma/cases/ecmaSimple.kt
new file mode 100644
index 00000000000..c7a16af175f
--- /dev/null
+++ b/js/js.translator/testFiles/mergeEcma/cases/ecmaSimple.kt
@@ -0,0 +1,12 @@
+package foo
+
+open class A {
+    val a = "OK"
+}
+
+class B: A()
+
+fun box(): String {
+
+    return B().a
+}
\ No newline at end of file
diff --git a/js/js.translator/testFiles/mergeEcma/cases/extensionClass.kt b/js/js.translator/testFiles/mergeEcma/cases/extensionClass.kt
new file mode 100644
index 00000000000..e23d550c7e2
--- /dev/null
+++ b/js/js.translator/testFiles/mergeEcma/cases/extensionClass.kt
@@ -0,0 +1,14 @@
+package foo
+
+open class A(val name: String)
+
+class B(val age: Int, name: String) : A(name)
+
+fun box(): String {
+    val b = B(12, "Mike")
+
+    if (b.age != 12) return "b.age != 12, it: ${b.age}"
+    if (b.name != "Mike") return "b.name != 'Mike', it: ${b.name}"
+
+    return "OK"
+}
\ No newline at end of file
diff --git a/js/js.translator/testFiles/mergeEcma/cases/getSetProperty.kt b/js/js.translator/testFiles/mergeEcma/cases/getSetProperty.kt
new file mode 100644
index 00000000000..fdf5784051a
--- /dev/null
+++ b/js/js.translator/testFiles/mergeEcma/cases/getSetProperty.kt
@@ -0,0 +1,27 @@
+package foo
+
+class A {
+    val a: Int
+        get() {
+            return 2
+        }
+
+    var b: Int = 1
+        get() {
+            return $b + 1;
+        }
+        set(value: Int) {
+            $b = value;
+        }
+}
+
+fun box(): String {
+    val a = A()
+    if (a.a != 2) return "a.a != 2, it: ${a.a}"
+
+    if (a.b != 2) return "a.b != 2, it: ${a.b}"
+    a.b = 3
+
+    if (a.b != 4) return "a.b != 4, it: ${a.b}"
+    return "OK"
+}
\ No newline at end of file
diff --git a/js/js.translator/testFiles/mergeEcma/cases/methodInClass.kt b/js/js.translator/testFiles/mergeEcma/cases/methodInClass.kt
new file mode 100644
index 00000000000..ab5bfaadc46
--- /dev/null
+++ b/js/js.translator/testFiles/mergeEcma/cases/methodInClass.kt
@@ -0,0 +1,14 @@
+package foo
+
+class A {
+    fun foo(): Int {
+        return 1
+    }
+
+}
+
+fun box(): String {
+    val a = A()
+    if (a.foo() != 1) return "a.foo() != 1, it: ${a.foo()}"
+    return "OK"
+}
\ No newline at end of file
diff --git a/js/js.translator/testFiles/mergeEcma/cases/methodOverride.kt b/js/js.translator/testFiles/mergeEcma/cases/methodOverride.kt
new file mode 100644
index 00000000000..e25befd297f
--- /dev/null
+++ b/js/js.translator/testFiles/mergeEcma/cases/methodOverride.kt
@@ -0,0 +1,27 @@
+package foo
+
+open class A {
+    fun f1(): Int {
+        return 1
+    }
+    open fun f2(): Int {
+        return 3
+    }
+}
+
+class B: A() {
+    override fun f2(): Int {
+        return 2
+    }
+}
+
+fun box(): String {
+    val a = A()
+    if (a.f1() != 1) return "a.f1() != 1, it: ${a.f1()}"
+    if (a.f2() != 3) return "a.f2() != 3, it: ${a.f2()}"
+
+    val b = B();
+    if (b.f1() != 1) return "b.f1() != 1, it: ${b.f1()}"
+    if (b.f2() != 2) return "b.f2() != 2, it: ${b.f2()}"
+    return "OK"
+}
\ No newline at end of file
diff --git a/js/js.translator/testFiles/mergeEcma/cases/objectWithMethods.kt b/js/js.translator/testFiles/mergeEcma/cases/objectWithMethods.kt
new file mode 100644
index 00000000000..a05fd859306
--- /dev/null
+++ b/js/js.translator/testFiles/mergeEcma/cases/objectWithMethods.kt
@@ -0,0 +1,22 @@
+package foo
+
+class Test {
+  private val a = object {
+      fun c() = 3
+      fun b() = 2
+  }
+
+  fun doTest(): Boolean {
+    if (a.c() != 3) {
+        return false;
+    }
+    if (a.b() != 2) {
+        return false;
+    }
+    return true;
+  }
+}
+
+fun box(): Boolean {
+    return Test().doTest();
+}
diff --git a/js/js.translator/testFiles/mergeEcma/cases/rootPackageValInit.kt b/js/js.translator/testFiles/mergeEcma/cases/rootPackageValInit.kt
new file mode 100644
index 00000000000..104c8765e2e
--- /dev/null
+++ b/js/js.translator/testFiles/mergeEcma/cases/rootPackageValInit.kt
@@ -0,0 +1,11 @@
+class A(val a: Int)
+
+val x = 1
+val a = A(2)
+
+fun box(): String {
+    if (x != 1) return "x != 1, it: $x"
+    if (a.a != 2) return "a.a != 2, it: ${a.a}"
+
+    return "OK"
+}
\ No newline at end of file
diff --git a/js/js.translator/testFiles/mergeEcma/cases/rootValInit.kt b/js/js.translator/testFiles/mergeEcma/cases/rootValInit.kt
new file mode 100644
index 00000000000..a454c906c4d
--- /dev/null
+++ b/js/js.translator/testFiles/mergeEcma/cases/rootValInit.kt
@@ -0,0 +1,16 @@
+package foo
+
+class A(val a: Int)
+
+class Empty
+
+val x = 1
+val a = A(2)
+val e = Empty()
+
+fun box(): String {
+    if (x != 1) return "x != 1, it: $x"
+    if (a.a != 2) return "a.a != 2, it: ${a.a}"
+
+    return "OK"
+}
\ No newline at end of file