JS backend: test for KT-6277

compiler/integration-tests/testData/ant/js/outputWithoutDirectory/build.log.expected

@@ -0,0 +1,9 @@
+OUT:
+Buildfile: [TestData]/build.xml
+
+build:
+
+BUILD SUCCESSFUL
+Total time: [time]
+
+Return code: 0

compiler/integration-tests/testData/ant/js/outputWithoutDirectory/build.xml

@@ -0,0 +1,14 @@
+<project name="Ant Task Test" default="build">
+  <target name="build">
+    <java dir="${temp}" fork="true"  classname="org.jetbrains.jet.cli.js.K2JSCompiler">
+      <classpath>
+        <pathelement location="${kotlin.lib}/kotlin-compiler.jar"/>
+        <pathelement location="${kotlin.lib}/kotlin-runtime.jar"/>
+      </classpath>
+      <arg value="${test.data}/root1/foo.kt"/>
+      <arg value="-output"/>
+      <arg value="out.js"/>
+      <jvmarg value="-noverify"/>
+    </java>
+  </target>
+</project>

compiler/integration-tests/testData/ant/js/outputWithoutDirectory/root1/foo.kt

@@ -0,0 +1,3 @@
+package foo
+
+fun box(): String = "OK"