JUnit

JUnit 5

JUnit Best Practices by Kyle Blaney

A better alternative to JUnit assertions is : AssertJ

Examples for Assertions.assertThat():

assertThat(frodo.age).isEqualTo(33);
assertThat(frodo.getName()).isEqualTo("Frodo").isNotEqualTo("Frodon");
 
assertThat(frodo).isIn(fellowshipOfTheRing);
assertThat(frodo).isIn(sam, frodo, pippin);
assertThat(sauron).isNotIn(fellowshipOfTheRing);
 
assertThat(frodo).matches(p -> p.age > 30 && p.getRace() == HOBBIT);
assertThat(frodo.age).matches(p -> p > 30);

Examples for BDDAssertions.then():

then(frodo.age).isEqualTo(33);
then(frodo.getName()).isEqualTo("Frodo").isNotEqualTo("Frodon");
 
then(frodo).isIn(fellowshipOfTheRing);
then(frodo).isIn(sam, frodo, pippin);
then(sauron).isNotIn(fellowshipOfTheRing);
 
then(frodo).matches(p -> p.age > 30 && p.getRace() == HOBBIT);
then(frodo.age).matches(p -> p > 30);