### Question:
DownloadOptions { public boolean isAuthenticationNeeded() { return StringUtils.isNotBlank(username) && StringUtils.isNotBlank(password); }  boolean isAuthenticationNeeded();  }### Answer:
@Test public void testIsAuthenticationNeededShouldReturnTrueWhenUsernameAndPasswordIsSet() { DownloadOptions options = new DownloadOptions(); options.setUsername("username"); options.setPassword("password"); boolean result = options.isAuthenticationNeeded(); assertThat(result).isTrue(); }
@Test public void testIsAuthenticationNeededShouldReturnFalseWhenOnlyUsernameIsSet() { DownloadOptions options = new DownloadOptions(); options.setUsername("username"); boolean result = options.isAuthenticationNeeded(); assertThat(result).isFalse(); }
@Test public void testIsAuthenticationNeededShouldReturnFalseWhenOnlyUsernameIsSetAndPasswordIsBlank() { DownloadOptions options = new DownloadOptions(); options.setUsername("username"); options.setPassword(""); boolean result = options.isAuthenticationNeeded(); assertThat(result).isFalse(); }
@Test public void testIsAuthenticationNeededShouldReturnFalseWhenOnlyPasswordIsSet() { DownloadOptions options = new DownloadOptions(); options.setPassword("password"); boolean result = options.isAuthenticationNeeded(); assertThat(result).isFalse(); }
@Test public void testIsAuthenticationNeededShouldReturnFalseWhenOnlyPasswordIsSetAndUsernameIsBlank() { DownloadOptions options = new DownloadOptions(); options.setUsername(""); options.setPassword("password"); boolean result = options.isAuthenticationNeeded(); assertThat(result).isFalse(); }