experiments with custom error messages in AssertJ

AssertJCustomErrorMessageTest

import org.junit.jupiter.api.Test;

import static org.assertj.core.api.Assertions.assertThat;

public class AssertJCustomErrorMessageTest {
  @Test
  void assertj_default() {
    assertThat("foo")
      .isEqualTo("bar");
  }

  @Test
  void assertj_withFailMessage() {
    assertThat("foo")
      .withFailMessage(() -> "explanation")
      .isEqualTo("bar");
  }

  @Test
  void assertj_overridingErrorMessage() {
    assertThat("foo")
      .overridingErrorMessage(() -> "explanation")
      .isEqualTo("bar");
  }

  @Test
  void assertj_as() {
    assertThat("foo")
      .as("explanation")
      .isEqualTo("bar");
  }
}