diff --git a/tests/phpunit/tests/link/getAdjacentPostLink.php b/tests/phpunit/tests/link/getAdjacentPostLink.php
new file mode 100644
index 0000000000..f4ffc10095
--- /dev/null
+++ b/tests/phpunit/tests/link/getAdjacentPostLink.php
@@ -0,0 +1,61 @@
+<?php
+
+/**
+ * @group link
+ */
+class Tests_Link_GetAdjacentPostLink extends WP_UnitTestCase {
+
+	protected $post_ids;
+	protected $cat_id;
+
+	public function setUp(){
+		parent::setUp();
+		$this->cat_id = $this->factory->category->create( array( 'name' => 'other' ) );
+		$this->post_ids = array();
+		$this->post_ids[] = $this->factory->post->create( array( 'post_type' => 'post', 'post_date' => '2014-10-26 05:32:29', 'category_id' => 1 ) );
+		$this->post_ids[] = $this->factory->post->create( array( 'post_type' => 'post', 'post_date' => '2014-10-26 04:32:29', 'category_id' => $this->cat_id ) );
+		$this->post_ids[] = $this->factory->post->create( array( 'post_type' => 'post', 'post_date' => '2014-10-26 03:32:29', 'category_id' => 1 ) );
+		$this->post_ids[] = $this->factory->post->create( array( 'post_type' => 'post', 'post_date' => '2014-10-26 02:32:29', 'category_id' => $this->cat_id ) );
+		$this->post_ids[] = $this->factory->post->create( array( 'post_type' => 'post', 'post_date' => '2014-10-26 01:32:29', 'category_id' => 1 ) );
+
+		//set current post (has 2 on each end)
+		global $GLOBALS;
+		$GLOBALS['post'] = get_post( $this->post_ids[2] );
+	}
+
+	public function test_get_next_post_link_default() {
+		$actual = get_next_post_link();
+		$expected = '<a href="http://example.org/?p=' . $this->post_ids[1] . '" rel="next">Post title 2</a> &raquo;';
+		$this->assertSame( $expected, $actual );
+	}
+
+	public function test_get_previous_post_link_default() {
+		$actual = get_previous_post_link();
+		$expected = '&laquo; <a href="http://example.org/?p=' . $this->post_ids[3] . '" rel="prev">Post title 4</a>';
+		$this->assertSame( $expected, $actual );
+	}
+
+	public function test_get_next_post_link_same_category() {
+		$actual = get_next_post_link( '%link &raquo;', '%title', true );
+		$expected = '<a href="http://example.org/?p=' . $this->post_ids[1] . '" rel="next">Post title 2</a> &raquo;';
+		$this->assertSame( $expected, $actual );
+	}
+
+	public function test_get_previous_post_link_same_category() {
+		$actual = get_previous_post_link( '&laquo; %link', '%title', true );
+		$expected = '&laquo; <a href="http://example.org/?p=' . $this->post_ids[3] . '" rel="prev">Post title 4</a>';
+		$this->assertSame( $expected, $actual );
+	}
+
+	public function test_get_next_post_link_exclude_category() {
+		$actual = get_next_post_link( '%link &raquo;', '%title', false, $this->cat_id );
+		$expected = '<a href="http://example.org/?p=' . $this->post_ids[1] . '" rel="next">Post title 2</a> &raquo;';
+		$this->assertSame( $expected, $actual );
+	}
+
+	public function test_get_previous_post_link_exclude_category() {
+		$actual = get_previous_post_link( '&laquo; %link', '%title', false, $this->cat_id );
+		$expected = '&laquo; <a href="http://example.org/?p=' . $this->post_ids[3] . '" rel="prev">Post title 4</a>';
+		$this->assertSame( $expected, $actual );
+	}
+}