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 * Copyright 2019, TeamDev. All rights reserved.
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 * modification, must retain the above copyright notice and the following
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package io.spine.io;

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.junitpioneer.jupiter.TempDirectory;
import org.junitpioneer.jupiter.TempDirectory.TempDir;

import java.io.File;
import java.net.URL;
import java.nio.file.Path;
import java.util.Iterator;
import java.util.UUID;

import static org.junit.jupiter.api.Assertions.assertFalse;

@DisplayName("Resource files should")
@ExtendWith(TempDirectory.class)
class ResourceFilesTest {

    @Test
    @DisplayName("return an empty iterator if queried for a non-existing file ")
    void throwOnInvalidFileName(@TempDir Path path) {
        Path nonExistentFilePath = path.resolve(UUID.randomUUID()
                                                    .toString());
        File nonExistingFile = nonExistentFilePath.toFile();
        String name = nonExistingFile.getName();
        Iterator<URL> result = ResourceFiles.loadAll(name);
        assertFalse(result.hasNext());
    }
}

Add a resource files test.