From 249361b1847420ace55973308cae5525fe1567e2 Mon Sep 17 00:00:00 2001 From: Florin Hriscu Date: Sun, 16 Feb 2020 00:33:19 +0200 Subject: [PATCH] BAEL-3502 Add ArraysDeepEqualsUnitTest.java inside new core-java-arrays-3 module. --- .../core-java-arrays-3/README.md | 5 + core-java-modules/core-java-arrays-3/pom.xml | 31 ++++++ .../deepequals/ArraysDeepEqualsUnitTest.java | 100 ++++++++++++++++++ 3 files changed, 136 insertions(+) create mode 100644 core-java-modules/core-java-arrays-3/README.md create mode 100644 core-java-modules/core-java-arrays-3/pom.xml create mode 100644 core-java-modules/core-java-arrays-3/src/test/java/com/baeldung/arrays/deepequals/ArraysDeepEqualsUnitTest.java diff --git a/core-java-modules/core-java-arrays-3/README.md b/core-java-modules/core-java-arrays-3/README.md new file mode 100644 index 0000000000..9f2885a2ce --- /dev/null +++ b/core-java-modules/core-java-arrays-3/README.md @@ -0,0 +1,5 @@ +## Core Java Arrays (Part 3) + +This module contains articles about Java arrays + +## Relevant Articles diff --git a/core-java-modules/core-java-arrays-3/pom.xml b/core-java-modules/core-java-arrays-3/pom.xml new file mode 100644 index 0000000000..b39a9af653 --- /dev/null +++ b/core-java-modules/core-java-arrays-3/pom.xml @@ -0,0 +1,31 @@ + + + 4.0.0 + core-java-arrays-3 + 0.1.0-SNAPSHOT + core-java-arrays-3 + jar + + + com.baeldung + parent-java + 0.0.1-SNAPSHOT + ../../parent-java + + + + + org.assertj + assertj-core + ${assertj.version} + test + + + + + 3.14.0 + + + \ No newline at end of file diff --git a/core-java-modules/core-java-arrays-3/src/test/java/com/baeldung/arrays/deepequals/ArraysDeepEqualsUnitTest.java b/core-java-modules/core-java-arrays-3/src/test/java/com/baeldung/arrays/deepequals/ArraysDeepEqualsUnitTest.java new file mode 100644 index 0000000000..aa577ea7bd --- /dev/null +++ b/core-java-modules/core-java-arrays-3/src/test/java/com/baeldung/arrays/deepequals/ArraysDeepEqualsUnitTest.java @@ -0,0 +1,100 @@ +package com.baeldung.arrays.deepequals; + +import static org.junit.Assert.assertFalse; +import static org.junit.Assert.assertTrue; + +import java.util.Arrays; +import java.util.Objects; +import org.junit.jupiter.api.Test; + +public class ArraysDeepEqualsUnitTest { + + class Person { + private int id; + private String name; + private int age; + + Person(int id, String name, int age) { + this.id = id; + this.name = name; + this.age = age; + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (obj == null) { + return false; + } + if (!(obj instanceof Person)) + return false; + Person person = (Person) obj; + return id == person.id && name.equals(person.name) && age == person.age; + } + + @Override + public int hashCode() { + return Objects.hash(id, name, age); + } + } + + @Test + void givenTwoUnidimensionalObjectTypeArrays_whenUsingEqualsAndDeepEquals_thenBothShouldReturnTrue() { + Object[] anArray = new Object[] { "string1", "string2", "string3" }; + Object[] anotherArray = new Object[] { "string1", "string2", "string3" }; + + assertTrue(Arrays.equals(anArray, anotherArray)); + assertTrue(Arrays.deepEquals(anArray, anotherArray)); + } + + @Test + void givenTwoUnidimensionalObjectTypeArraysWithNullElements_whenUsingEqualsAndDeepEquals_thenBothShouldReturnTrue() { + Object[] anArray = new Object[] { "string1", null, "string3" }; + Object[] anotherArray = new Object[] { "string1", null, "string3" }; + + assertTrue(Arrays.equals(anArray, anotherArray)); + assertTrue(Arrays.deepEquals(anArray, anotherArray)); + } + + @Test + void givenTwoUnidimensionalObjectTypeArraysWithNestedElements_whenUsingEqualsAndDeepEquals_thenShouldReturnDifferently() { + Object[] anArray = new Object[] { "string1", null, new String[] { "nestedString1", "nestedString2" } }; + Object[] anotherArray = new Object[] { "string1", null, new String[] { "nestedString1", "nestedString2" } }; + + assertFalse(Arrays.equals(anArray, anotherArray)); + assertTrue(Arrays.deepEquals(anArray, anotherArray)); + } + + @Test + void givenTwoMultidimensionalPrimitiveTypeArrays_whenUsingEqualsAndDeepEquals_thenBothShouldReturnDifferently() { + int[][] anArray = { { 1, 2, 3 }, { 4, 5, 6, 9 }, { 7 } }; + int[][] anotherArray = { { 1, 2, 3 }, { 4, 5, 6, 9 }, { 7 } }; + + assertFalse(Arrays.equals(anArray, anotherArray)); + assertTrue(Arrays.deepEquals(anArray, anotherArray)); + } + + @Test + void givenTwoMultidimensionalObjectTypeArrays_whenUsingEqualsAndDeepEquals_thenBothShouldReturnDifferently() { + Person personArray1[][] = { { new Person(1, "John", 22), new Person(2, "Mike", 23) }, + { new Person(3, "Steve", 27), new Person(4, "Gary", 28) } }; + Person personArray2[][] = { { new Person(1, "John", 22), new Person(2, "Mike", 23) }, + { new Person(3, "Steve", 27), new Person(4, "Gary", 28) } }; + + assertFalse(Arrays.equals(personArray1, personArray2)); + assertTrue(Arrays.deepEquals(personArray1, personArray2)); + } + + @Test + void givenTwoMultidimensionalObjectTypeArrays_whenUsingDeepEqualsFromObjectsAndArraysClasses_thenBothShouldReturnTrue() { + Person personArray1[][] = { { new Person(1, "John", 22), new Person(2, "Mike", 23) }, + { new Person(3, "Steve", 27), new Person(4, "Gary", 28) } }; + Person personArray2[][] = { { new Person(1, "John", 22), new Person(2, "Mike", 23) }, + { new Person(3, "Steve", 27), new Person(4, "Gary", 28) } }; + + assertTrue(Objects.deepEquals(personArray1, personArray2)); + assertTrue(Arrays.deepEquals(personArray1, personArray2)); + } +}