From 67616cdda3fad019452cd605a0111e8c6dd76030 Mon Sep 17 00:00:00 2001
From: cdjole <djordje.cvijetic@gmail.com>
Date: Thu, 24 May 2018 04:06:07 +0200
Subject: [PATCH] BAEL-1798 (#4322)

---
 .../PasswordStoreExamplesUnitTest.java        | 57 +++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 core-java/src/test/java/com/baeldung/chararraypassword/PasswordStoreExamplesUnitTest.java

diff --git a/core-java/src/test/java/com/baeldung/chararraypassword/PasswordStoreExamplesUnitTest.java b/core-java/src/test/java/com/baeldung/chararraypassword/PasswordStoreExamplesUnitTest.java
new file mode 100644
index 0000000000..d28ad3a54c
--- /dev/null
+++ b/core-java/src/test/java/com/baeldung/chararraypassword/PasswordStoreExamplesUnitTest.java
@@ -0,0 +1,57 @@
+package com.baeldung.chararraypassword;
+
+import org.junit.Test;
+
+import java.util.Arrays;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class PasswordStoreExamplesUnitTest {
+
+	String stringPassword = "password";
+	char[] charPassword = new char[]{'p', 'a', 's', 's', 'w', 'o', 'r', 'd'};
+
+	@Test
+	public void givenStringHashCode_WhenStringValueChanged_ThenHashCodesNotEqualAndValesNotEqual() {
+		String originalHashCode = Integer.toHexString(stringPassword.hashCode());
+
+		stringPassword = "********";
+		String changedHashCode = Integer.toHexString(stringPassword.hashCode());
+
+		assertThat(originalHashCode).isNotEqualTo(changedHashCode);
+		assertThat(stringPassword).isNotEqualTo("password");
+	}
+
+	@Test
+	public void givenStringHashCode_WhenStringValueChangedAndStringValueReassigned_ThenHashCodesEqualAndValesEqual() {
+		String originalHashCode = Integer.toHexString(stringPassword.hashCode());
+
+		stringPassword = "********";
+		stringPassword = "password";
+		String reassignedHashCode = Integer.toHexString(stringPassword.hashCode());
+
+		assertThat(originalHashCode).isEqualTo(reassignedHashCode);
+		assertThat(stringPassword).isEqualTo("password");
+	}
+
+	@Test
+	public void givenCharArrayHashCode_WhenArrayElementsValueChanged_ThenHashCodesEqualAndValesNotEqual() {
+		String originalHashCode = Integer.toHexString(charPassword.hashCode());
+
+		Arrays.fill(charPassword, '*');
+		String changedHashCode = Integer.toHexString(charPassword.hashCode());
+
+		assertThat(originalHashCode).isEqualTo(changedHashCode);
+		assertThat(charPassword).isNotEqualTo(new char[]{'p', 'a', 's', 's', 'w', 'o', 'r', 'd'});
+	}
+
+	@Test
+	public void whenCallingToStringOfString_ThenValuesEqual() {
+		assertThat(stringPassword.toString()).isEqualTo("password");
+	}
+
+	@Test
+	public void whenCallingToStringOfCharArray_ThenValuesNotEqual() {
+		assertThat(charPassword.toString()).isNotEqualTo("password");
+	}
+}