diff --git a/example/phpunit/.tests/Dice/DiceTest.php b/example/phpunit/.tests/Dice/DiceTest.php
new file mode 100644
index 0000000..7a4dffc
--- /dev/null
+++ b/example/phpunit/.tests/Dice/DiceTest.php
@@ -0,0 +1,38 @@
+<?php
+
+namespace Mos\Dice;
+
+use PHPUnit\Framework\TestCase;
+
+/**
+ * Test cases for class Dice.
+ */
+class DiceTest extends TestCase
+{
+    /**
+     * Construct object and verify it it a Dice object.
+     */
+    public function testCreateObject()
+    {
+        $die = new Dice();
+        $this->assertInstanceOf("\Mos\Dice\Dice", $die);
+
+        $res = $die->getValue();
+        $exp = null;
+        $this->assertEquals($exp, $res);
+    }
+
+    /**
+     * Roll the dice and assert value is within bounds.
+     */
+    public function testRollDice()
+    {
+        $die = new Dice();
+        $res = $die->roll();
+        $this->assertIsInt($res);
+
+        $res = $die->getValue();
+        $this->assertTrue($res >= 1);
+        $this->assertTrue($res <= 6);
+    }
+}
diff --git a/example/phpunit/.tests/Guess/GuessExceptionTest.php b/example/phpunit/.tests/Guess/GuessExceptionTest.php
new file mode 100644
index 0000000..2ff7e14
--- /dev/null
+++ b/example/phpunit/.tests/Guess/GuessExceptionTest.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace Mos\Guess;
+
+use PHPUnit\Framework\TestCase;
+
+/**
+ * Test cases for class Guess.
+ */
+class GuessExceptionTest extends TestCase
+{
+    /**
+     * Verify GuessException when guess is to high.
+     */
+    public function testGuessToHigh()
+    {
+        $guess = new Guess();
+
+        $this->expectException(GuessException::class);
+        $guess->makeGuess(101);
+    }
+
+    /**
+     * Verify GuessException when guess is to low.
+     */
+    public function testGuessToLow()
+    {
+        $guess = new Guess();
+
+        $this->expectException(GuessException::class);
+        $guess->makeGuess(0);
+    }
+}