How to use

of

method

in

com.linecorp.bot.client.FixedChannelTokenSupplier

/**
 * Expose {@link FixedChannelTokenSupplier} as {@link Bean}
 * in case of no other definition for {@link ChannelTokenSupplier} type.
 */
@Bean
@ConditionalOnMissingBean(ChannelTokenSupplier.class)
public ChannelTokenSupplier channelTokenSupplier() {
  final String channelToken = lineBotProperties.getChannelToken();
  return FixedChannelTokenSupplier.of(channelToken);
}

/**
 * Set fixed channel token. This overwrites {@link #channelTokenSupplier(ChannelTokenSupplier)}.
 *
 * @see #channelTokenSupplier(ChannelTokenSupplier)
 */
public LineMessagingClientBuilder channelToken(String channelToken) {
  this.channelTokenSupplier(FixedChannelTokenSupplier.of(channelToken));
  return this;
}

/**
 * Expose {@link FixedChannelTokenSupplier} as {@link Bean}
 * in case of no other definition for {@link ChannelTokenSupplier} type.
 */
@Bean
@ConditionalOnMissingBean(ChannelTokenSupplier.class)
public ChannelTokenSupplier channelTokenSupplier() {
  final String channelToken = lineBotProperties.getChannelToken();
  return FixedChannelTokenSupplier.of(channelToken);
}

static LineMessagingClientBuilder builder(String channelToken) {
  return builder(FixedChannelTokenSupplier.of(channelToken));
}

  @Test
  public void getTest() {
    ChannelTokenSupplier target = FixedChannelTokenSupplier.of("FIXED_TOKEN");

    // DO
    String result = target.get();

    // Verify
    assertThat(result).isEqualTo("FIXED_TOKEN");
  }
}

@Test(expected = NullPointerException.class)
public void constructedInstanceAlwaysNonNullTest() {
  // Do
  FixedChannelTokenSupplier.of(null);
  // Verify
  fail("NullPointerException is not occurred.");
}