diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/SingleFileTranslationTest.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/SingleFileTranslationTest.java
index ed048fc47f7..13135855652 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/SingleFileTranslationTest.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/SingleFileTranslationTest.java
@@ -50,7 +50,7 @@ public abstract class SingleFileTranslationTest extends BasicTest {
         runFunctionOutputTestByPath(ecmaVersions, getInputFilePath(kotlinFilename), packageName, functionName, expectedResult);
     }
 
-    protected void runFunctionOutputTestByPath(
+    private void runFunctionOutputTestByPath(
             @NotNull Iterable<EcmaVersion> ecmaVersions,
             @NotNull String kotlinFilePath,
             @NotNull String packageName,
@@ -73,14 +73,6 @@ public abstract class SingleFileTranslationTest extends BasicTest {
         checkFooBoxIsTrue(getTestName(true) + ".kt", DEFAULT_ECMA_VERSIONS);
     }
 
-    protected void fooBoxIsValue(Object expected) throws Exception {
-        runFunctionOutputTest(DEFAULT_ECMA_VERSIONS, getTestName(true) + ".kt", TEST_PACKAGE, TEST_FUNCTION, expected);
-    }
-
-    protected void fooBoxTest(@NotNull Iterable<EcmaVersion> ecmaVersions) throws Exception {
-        checkFooBoxIsTrue(getTestName(true) + ".kt", ecmaVersions);
-    }
-
     protected void checkFooBoxIsOk() throws Exception {
         checkFooBoxIsOk(getTestName(true) + ".kt");
     }
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/DollarParameterTest.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/DollarParameterTest.java
index e024732ed8d..cd1f1953121 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/DollarParameterTest.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/DollarParameterTest.java
@@ -23,6 +23,6 @@ public final class DollarParameterTest extends AbstractExpressionTest {
     }
 
     public void testDollarParameter() throws Exception {
-        fooBoxIsValue("Hello world!");
+        checkFooBoxIsOk();
     }
 }
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/InvokeConventionTest.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/InvokeConventionTest.java
index 2c010d27514..756f205e142 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/InvokeConventionTest.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/InvokeConventionTest.java
@@ -23,7 +23,7 @@ public final class InvokeConventionTest extends AbstractExpressionTest {
     }
 
     public void testInvokeMethod() throws Exception {
-        fooBoxIsValue("hello world!");
+        checkFooBoxIsOk();
     }
 
     public void testExplicitInvokeLambda() throws Exception {
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/MiscTest.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/MiscTest.java
index 1f892bc20a5..751e027f320 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/MiscTest.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/MiscTest.java
@@ -149,7 +149,7 @@ public final class MiscTest extends AbstractExpressionTest {
     }
 
     public void testPackageLevelVarInPackage() throws Exception {
-        fooBoxIsValue("OK");
+        checkFooBoxIsOk();
     }
 
     public void testPackageLevelVarInRoot() throws Exception {
@@ -161,7 +161,7 @@ public final class MiscTest extends AbstractExpressionTest {
     }
 
     public void testLocalVarAsFunction() throws Exception {
-        fooBoxIsValue("OK");
+        checkFooBoxIsOk();
     }
 
     public void testExclExclThrows() throws Exception {
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/NumberTest.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/NumberTest.java
index aa3367012ac..c86347d8a7a 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/NumberTest.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/NumberTest.java
@@ -42,7 +42,7 @@ public final class NumberTest extends SingleFileTranslationTest {
     }
 
     public void testDivision() throws Exception {
-        fooBoxIsValue("SUCCESS");
+        checkFooBoxIsOk();
     }
 
     // KT-2342 Type mismatch on Int division (JavaScript back-end)
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/PropertyAccessTest.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/PropertyAccessTest.java
index 7a0b1c3f6f8..4fca9c12afb 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/PropertyAccessTest.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/PropertyAccessTest.java
@@ -43,7 +43,7 @@ public final class PropertyAccessTest extends SingleFileTranslationTest {
     }
 
     public void testSetter() throws Exception {
-        fooBoxIsValue(99.0);
+        checkFooBoxIsOk();
     }
 
 
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/StringTemplatesTest.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/StringTemplatesTest.java
index 498e9c12f50..d5047f11ba3 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/StringTemplatesTest.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/StringTemplatesTest.java
@@ -23,7 +23,7 @@ public final class StringTemplatesTest extends AbstractExpressionTest {
     }
 
     public void testObjectWithToString() throws Exception {
-        fooBoxIsValue("a = abcS, b = defS");
+        checkFooBoxIsOk();
     }
 
     public void testStringValues() throws Exception {
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/StringTest.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/StringTest.java
index e97f210602c..cf68410b062 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/StringTest.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/StringTest.java
@@ -59,7 +59,7 @@ public final class StringTest extends AbstractExpressionTest {
     }
 
     public void testNumbersInTemplate() throws Exception {
-        fooBoxIsValue("2354");
+        checkFooBoxIsOk();
     }
 
     public void testStringSplit() throws Exception {
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/WhenTest.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/WhenTest.java
index 302e731925c..a6d76fc34cc 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/WhenTest.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/WhenTest.java
@@ -53,7 +53,7 @@ public final class WhenTest extends AbstractExpressionTest {
     }
 
     public void testMultipleCases() throws Exception {
-        fooBoxIsValue(2.0);
+        checkFooBoxIsOk();
     }
 
     public void testMatchNullableType() throws Exception {
diff --git a/js/js.translator/testData/expression/dollarParameter/cases/dollarParameter.kt b/js/js.translator/testData/expression/dollarParameter/cases/dollarParameter.kt
index d69cf733a60..57dd70af5a3 100644
--- a/js/js.translator/testData/expression/dollarParameter/cases/dollarParameter.kt
+++ b/js/js.translator/testData/expression/dollarParameter/cases/dollarParameter.kt
@@ -5,5 +5,6 @@ fun MyController(`$scope`: String): String {
 }
 
 fun box(): String {
-    return MyController("world")
-}
\ No newline at end of file
+    assertEquals("Hello world!", MyController("world"))
+    return "OK"
+}
diff --git a/js/js.translator/testData/expression/invoke/cases/invokeMethod.kt b/js/js.translator/testData/expression/invoke/cases/invokeMethod.kt
index 30466eb98f9..afe8921e969 100644
--- a/js/js.translator/testData/expression/invoke/cases/invokeMethod.kt
+++ b/js/js.translator/testData/expression/invoke/cases/invokeMethod.kt
@@ -8,5 +8,6 @@ class Foo(val postfix: String) {
 
 fun box(): String {
     val a = Foo(" world!")
-    return a("hello")
-}
\ No newline at end of file
+    assertEquals("hello world!", a("hello"))
+    return "OK"
+}
diff --git a/js/js.translator/testData/expression/string/cases/numbersInTemplate.kt b/js/js.translator/testData/expression/string/cases/numbersInTemplate.kt
index 8f47b0eee0d..8e58308eb84 100644
--- a/js/js.translator/testData/expression/string/cases/numbersInTemplate.kt
+++ b/js/js.translator/testData/expression/string/cases/numbersInTemplate.kt
@@ -4,6 +4,7 @@ fun box(): String {
     val number = 3
     val s1 = "${number - 1}${number}"
     val s2 = "${5}${4}"
-    return "${s1}${s2}"
+    assertEquals("2354", "${s1}${s2}")
+    return "OK"
 }
 
diff --git a/js/js.translator/testData/expression/stringTemplates/cases/objectWithToString.kt b/js/js.translator/testData/expression/stringTemplates/cases/objectWithToString.kt
index 020ba81bdd9..bf8df5c3922 100644
--- a/js/js.translator/testData/expression/stringTemplates/cases/objectWithToString.kt
+++ b/js/js.translator/testData/expression/stringTemplates/cases/objectWithToString.kt
@@ -10,5 +10,6 @@ fun box(): String {
     val a = Foo("abc")
     val b = Foo("def")
     val message = "a = $a, b = $b"
-    return message
-}
\ No newline at end of file
+    assertEquals("a = abcS, b = defS", message)
+    return "OK"
+}
diff --git a/js/js.translator/testData/expression/when/cases/multipleCases.kt b/js/js.translator/testData/expression/when/cases/multipleCases.kt
index c98defa288f..db160000b3e 100644
--- a/js/js.translator/testData/expression/when/cases/multipleCases.kt
+++ b/js/js.translator/testData/expression/when/cases/multipleCases.kt
@@ -1,6 +1,6 @@
 package foo
 
-fun box(): Int {
+fun box(): String {
     val c = 3
     val d = 5
     var z = 0
@@ -17,5 +17,6 @@ fun box(): Int {
             z = -1000;
         }
     }
-    return z
-}
\ No newline at end of file
+    assertEquals(2, z)
+    return "OK"
+}
diff --git a/js/js.translator/testData/number/cases/division.kt b/js/js.translator/testData/number/cases/division.kt
index 88db0e4fec5..4095a08c275 100644
--- a/js/js.translator/testData/number/cases/division.kt
+++ b/js/js.translator/testData/number/cases/division.kt
@@ -40,5 +40,5 @@ fun box(): Any? {
     if ((f3 / f4 - 2.5.toFloat()) > 0.01) {
         return "9"
     }
-    return "SUCCESS"
-}
\ No newline at end of file
+    return "OK"
+}
diff --git a/js/js.translator/testData/propertyAccess/cases/setter.kt b/js/js.translator/testData/propertyAccess/cases/setter.kt
index b4e1432eaa2..75e059fe047 100644
--- a/js/js.translator/testData/propertyAccess/cases/setter.kt
+++ b/js/js.translator/testData/propertyAccess/cases/setter.kt
@@ -4,9 +4,10 @@ class Test() {
     var a: Int = 1
 }
 
-fun box(): Int {
-    var a = Test()
+fun box(): String {
     var b = Test()
+    assertEquals(1, b.a)
     b.a = 100
-    return (b.a - a.a)
-}
\ No newline at end of file
+    assertEquals(100, b.a)
+    return "OK"
+}