JS backend: added tests for infix calls.

#KT-3998   in progress
 #EA-56241 in progress

js/js.tests/test/org/jetbrains/k2js/test/semantics/FunctionTest.java

@@ -146,4 +146,8 @@ public class FunctionTest extends AbstractExpressionTest {
     public void testLocalExtFunction() throws Exception {
         checkFooBoxIsOk();
     }
+
+    public void testInfixCall() throws Exception {
+        checkFooBoxIsOk();
+    }
 }

js/js.tests/test/org/jetbrains/k2js/test/semantics/InvokeConventionTest.java

@@ -53,4 +53,8 @@ public final class InvokeConventionTest extends AbstractExpressionTest {
     public void testInvokeWithThisObjectAndReceiver() throws Exception {
         fooBoxTest();
     }
-}
+
+    public void testInfixCall() throws Exception {
+        checkFooBoxIsOk();
+    }
+}

js/js.tests/test/org/jetbrains/k2js/test/semantics/OperatorOverloadingTest.java

@@ -116,4 +116,8 @@ public final class OperatorOverloadingTest extends SingleFileTranslationTest {
     public void testOverloadUnaryOperationsViaExtensionFunctions() throws Exception {
         fooBoxTest();
     }
+
+    public void testOverloadByLambda() throws Exception {
+        checkFooBoxIsOk();
+    }
 }