[BAEL-5976]: Extract Values using AssertJ in Java (#13105)

JIRA: https://jira.baeldung.com/browse/BAEL-5976
2022-12-13 16:55:12 -08:00
parent abd9f8a38b
commit 78124d60dd
4 changed files with 109 additions and 0 deletions
@@ -0,0 +1,46 @@
+package com.baeldung.assertj.extracting;
+
+import org.assertj.core.api.InstanceOfAssertFactories;
+import org.junit.jupiter.api.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.as;
+import static org.assertj.core.api.Assertions.assertThat;
+
+class AssertJExtractingUnitTest {
+    static final List<Address> RESTRICTED_ADDRESSES = new ArrayList<>();
+
+    @Test
+    void whenUsingRegularAssertionFlow_thenCorrect() {
+
+        // Given
+        Person person = new Person("aName", "aLastName", new Address("aStreet", "aCity", new ZipCode(90210)));
+
+        // Then
+        Address address = person.getAddress();
+        assertThat(address).isNotNull()
+          .isNotIn(RESTRICTED_ADDRESSES);
+        ZipCode zipCode = address.getZipCode();
+        assertThat(zipCode).isNotNull();
+        assertThat(zipCode.getZipcode()).isBetween(1000L, 100_000L);
+    }
+
+    @Test
+    void whenUsingExtractingAssertionFlow_thenCorrect() {
+
+        // Given
+        Person person = new Person("aName", "aLastName", new Address("aStreet", "aCity", new ZipCode(90210)));
+
+        // Then
+        assertThat(person)
+          .extracting(Person::getAddress)
+          .isNotNull()
+          .isNotIn(RESTRICTED_ADDRESSES)
+          .extracting(Address::getZipCode)
+          .isNotNull()
+          .extracting(ZipCode::getZipcode, as(InstanceOfAssertFactories.LONG))
+          .isBetween(1_000L, 100_000L);
+    }
+}