1 files changed, 17 insertions, 0 deletions
diff --git a/config-application-package/src/test/java/com/yahoo/config/model/application/provider/FilesApplicationPackageTest.java b/config-application-package/src/test/java/com/yahoo/config/model/application/provider/FilesApplicationPackageTest.java
index ae6f9373e16..fd5437c27de 100644
--- a/config-application-package/src/test/java/com/yahoo/config/model/application/provider/FilesApplicationPackageTest.java
+++ b/config-application-package/src/test/java/com/yahoo/config/model/application/provider/FilesApplicationPackageTest.java
@@ -16,8 +16,10 @@ import java.io.FileReader;
 import java.io.IOException;
 import java.nio.file.Files;
 
+import static com.yahoo.config.model.application.provider.FilesApplicationPackage.applicationFile;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
@@ -126,4 +128,19 @@ public class FilesApplicationPackageTest {
         }
     }
 
+    @Test
+    public void testApplicationFile() {
+        applicationFile(new File("foo"), "");
+        applicationFile(new File("foo"), "bar");
+        applicationFile(new File(new File(""), ""), "");
+        assertEquals("/ is not a child of ",
+                     assertThrows(IllegalArgumentException.class,
+                                  () -> applicationFile(new File(""), ""))
+                             .getMessage());
+        assertEquals("'..' is not allowed in path",
+                     assertThrows(IllegalArgumentException.class,
+                                  () -> applicationFile(new File("foo"), ".."))
+                             .getMessage());
+    }
+
 }