Add first test

2016-07-30 10:50:47 +02:00
parent ff84127f47
commit eff343b596
3 changed files with 31 additions and 3 deletions
@@ -0,0 +1,23 @@
+package com.baeldung.immutable;
+
+import org.junit.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class ImmutablePersonTest {
+
+    @Test
+    public void whenModifying_shouldCreateNewInstance() throws Exception {
+        final com.baeldung.immutable.ImmutablePerson john = com.baeldung.immutable.ImmutablePerson.builder()
+          .age(42)
+          .name("John")
+          .build();
+
+        final com.baeldung.immutable.ImmutablePerson john43 = john.withAge(43);
+
+        assertThat(john)
+          .isNotSameAs(john43);
+        assertThat(john.getAge())
+          .isEqualTo(42);
+    }
+}