add unit test to FileManager

Author: Julian Kast

android/sdl_android/src/androidTest/java/com/smartdevicelink/managers/file/FileManagerTests.java

@@ -850,6 +850,43 @@ public void run() {
         });
     }
 
+    /**
+     * Tests to make sure files are not being uploaded to head unit multiple times in a row
+     */
+    @Test
+    public void testFileNotOnHmi() {
+        final ISdl internalInterface = createISdlMock();
+
+        doAnswer(onListFilesSuccess).when(internalInterface).sendRPC(any(ListFiles.class));
+        doAnswer(onPutFileSuccess).when(internalInterface).sendRPC(any(PutFile.class));
+
+        final SdlArtwork validFile2 = new SdlArtwork(TestValues.GENERAL_STRING + "2", FileType.GRAPHIC_JPEG, TestValues.GENERAL_STRING.getBytes(), false);
+
+        final List<SdlArtwork> list = Arrays.asList(validFile2, validFile2);
+
+        FileManagerConfig fileManagerConfig = new FileManagerConfig();
+
+        final FileManager fileManager = new FileManager(internalInterface, mTestContext, fileManagerConfig);
+        fileManager.start(new CompletionListener() {
+            @Override
+            public void onComplete(boolean success) {
+                fileManager.uploadArtworks(list, new MultipleFileCompletionListener() {
+                    @Override
+                    public void onComplete(final Map<String, String> errors) {
+                        assertOnMainThread(new Runnable() {
+                            @Override
+                            public void run() {
+                                assertTrue(errors != null);
+                                assertTrue(errors.containsValue(fileManager.fileManagerCannotOverwriteError));
+                            }
+                        });
+                    }
+                });
+            }
+        });
+    }
+
+
     /**
      * Test custom overridden SdlFile equals method
      */