23 lines
615 B
Java
23 lines
615 B
Java
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package com.baeldung.immutable;
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import org.junit.Test;
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import static org.assertj.core.api.Assertions.assertThat;
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public class ImmutablePersonTest {
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@Test
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public void whenModifying_shouldCreateNewInstance() throws Exception {
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final com.baeldung.immutable.ImmutablePerson john = com.baeldung.immutable.ImmutablePerson.builder()
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.age(42)
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.name("John")
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.build();
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final com.baeldung.immutable.ImmutablePerson john43 = john.withAge(43);
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assertThat(john)
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.isNotSameAs(john43);
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assertThat(john.getAge())
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.isEqualTo(42);
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}
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}
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