@Test
void writePropertiesFile_noMerging() throws IOException {

    final HashMap<String, String> expectedProperties = new HashMap<>(
            ImmutableMap.<String, String>builder()
                    .put("key1", "value1")
                    .put("key2", "value2")
                    .build()
    );
    final Properties properties = new Properties();
    properties.putAll(ImmutableMap.of("key1", "value1", "key2", "value2"));
    WriterHelper.writePropertiesFile(testProjectDir, documentFileUtils, properties, TEST_PROPERTIES);
    assertPropertiesContents(expectedProperties);
}