@Test
void environment() {

    ApplicationBuilder builder = new ApplicationBuilder();
    Assertions.assertEquals("product", builder.build().getEnvironment());
    builder.environment("develop");
    Assertions.assertEquals("develop", builder.build().getEnvironment());
    builder.environment("test");
    Assertions.assertEquals("test", builder.build().getEnvironment());
    builder.environment("product");
    Assertions.assertEquals("product", builder.build().getEnvironment());
}