JS backend: tests for KT-6323 KotlinJS library modules

generators/src/org/jetbrains/jet/generators/tests/GenerateTests.kt

@@ -136,6 +136,7 @@ import org.jetbrains.jet.types.AbstractJetTypeBindingTest
 import org.jetbrains.jet.plugin.debugger.evaluate.AbstractCodeFragmentCompletionHandlerTest
 import org.jetbrains.jet.plugin.coverage.AbstractKotlinCoverageOutputFilesTest
 import org.jetbrains.k2js.test.semantics.AbstractDynamicTest
+import org.jetbrains.k2js.test.semantics.AbstractMultiModuleTest
 
 fun main(args: Array<String>) {
     System.setProperty("java.awt.headless", "true")
@@ -692,6 +693,10 @@ fun main(args: Array<String>) {
         testClass(javaClass<AbstractDynamicTest>()) {
             model("dynamic/cases")
         }
+
+        testClass(javaClass<AbstractMultiModuleTest>()) {
+            model("multiModule/cases", extension = null, recursive=false)
+        }
     }
 
     testGroup("js/js.tests/test", "compiler/testData") {