diff --git a/tests/phpunit/tests/functions/maybe_unserialize.php b/tests/phpunit/tests/functions/maybe_unserialize.php
new file mode 100644
index 0000000..89d05d5
--- /dev/null
+++ b/tests/phpunit/tests/functions/maybe_unserialize.php
@@ -0,0 +1,78 @@
+<?php
+/**
+ * Test functions against maybe_unserialize. 
+ * @group functions.php
+ */
+
+if ( ! defined( 'WPINC' ) ) {
+	die;
+}
+
+
+class Tests_Functions_maybe_unserialize extends WP_UnitTestCase {
+
+	//Passing an array should return the same array back
+	public function test_maybe_unserialize_array() {
+		$expected = array(
+			'start' => 'here',
+			'end'   => 'here',
+		);
+
+		$this->assertEquals( $expected, maybe_unserialize( $expected ) );
+	}
+
+	//Tests normal string unserialization
+	public function test_maybe_unserialize_string() {
+		$this->assertEquals( 'string', maybe_unserialize( 'string' ) );
+
+		$this->assertEquals( '[string]', maybe_unserialize( '[string]' ) );
+
+		$this->assertEquals( '{s:5:"start";s:4:"here";s:3:"end";s:4:"here";}', maybe_unserialize( '{s:5:"start";s:4:"here";s:3:"end";s:4:"here";}' ) );
+
+	}
+
+	//Passing an int should return the same int
+	public function test_maybe_unserialize_int() {
+
+		$this->assertEquals( 100, maybe_unserialize( 100 ) );
+	}
+
+	//Passing null should return null
+	public function test_maybe_unserialize_null() {
+
+		$this->assertEquals( null, maybe_unserialize( null ) );
+	}
+
+	//Passing null should return null
+	public function test_maybe_unserialize_object() {
+		$object = new stdClass();
+
+		$this->assertEquals( $object, maybe_unserialize( $object ) );
+	}
+
+	//Passing a well formatted seriliazed string, should return an array
+	public function test_maybe_unserialize_to_array() {
+		$expected = array(
+			'start' => 'here',
+			'end'   => 'here',
+		);
+
+		$this->assertEquals( $expected, maybe_unserialize( 'a:2:{s:5:"start";s:4:"here";s:3:"end";s:4:"here";}' ) );
+	}
+
+	//Passing a baddly formatted seriliazed string, should return false 
+	public function test_maybe_unserialize_bad_serialized_string() {
+
+		// a:3 not a:2 as it should be
+		$this->assertFalse( maybe_unserialize( 'a:3:{s:5:"start";s:4:"here";s:3:"end";s:4:"here";}' ) );
+	}
+	
+	
+	//Passing a well formatted seriliazed string with spaces before and after, should return false
+	public function test_maybe_unserialize_to_array_untrimmed() {
+	
+		$this->assertFalse( maybe_unserialize( '  a:2:{s:5:"start";s:4:"here";s:3:"end";s:4:"here";}   ' ) );
+	}
+	
+	
+}
\ No newline at end of file