Merge branch 'test/gh-8-increase-unit-test-code-coverage' into develop

icecore-hashids.iml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
-  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8" inherit-compiler-output="false">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
     <output url="file://$MODULE_DIR$/target/classes" />
     <output-test url="file://$MODULE_DIR$/target/test-classes" />
     <content url="file://$MODULE_DIR$">

src/test/java/com/arcticicestudio/icecore/hashids/HashidTest.java

@@ -0,0 +1,40 @@
+/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+title      Hashid Unit Tests                                  +
+project    icecore-hashids                                    +
+repository https://github.com/arcticicestudio/icecore-hashids +
+author     Arctic Ice Studio                                  +
+email      [email protected]                    +
+copyright  Copyright (C) 2017                                 +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+*/
+package com.arcticicestudio.icecore.hashids;
+
+
+import org.junit.Test;
+
+import static junit.framework.TestCase.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Unit tests for {@link Hashid} implementation.
+ *
+ * @author Arctic Ice Studio <[email protected]>
+ * @since 0.3.0
+ */
+public class HashidTest {
+
+  @Test
+  public void testEqualsSymmetric() {
+    Hashid h1 = new Hashid(new long[] {2, 17, 92}, "MjhWikW");
+    Hashid h2 = new Hashid(new long[] {2, 17, 92}, "MjhWikW");
+
+    assertTrue(h1.equals(h2) && h2.equals(h1));
+    assertTrue(h1.hashCode() == h2.hashCode());
+    assertTrue(h1.equals(h1));
+    assertFalse(h1.equals(null));
+
+    Long unequalClassObject = 12L;
+    assertFalse(h1.equals(unequalClassObject));
+  }
+}