diff --git a/tests/phpunit/tests/post/getPostTypeLabels.php b/tests/phpunit/tests/post/getPostTypeLabels.php
new file mode 100644
index 0000000000..c0d0cfb6a4
--- /dev/null
+++ b/tests/phpunit/tests/post/getPostTypeLabels.php
@@ -0,0 +1,118 @@
+<?php
+
+/**
+ * @group post
+ */
+class Tests_Get_Post_Type_Labels extends WP_UnitTestCase {
+	public function test_returns_an_object() {
+		$this->assertInternalType( 'object', get_post_type_labels( (object) array(
+			'name'         => 'foo',
+			'labels'       => array(),
+			'hierarchical' => false,
+		) ) );
+	}
+
+	public function test_returns_hierachical_labels() {
+		$labels = get_post_type_labels( (object) array(
+			'name'         => 'foo',
+			'labels'       => array(),
+			'hierarchical' => true,
+		) );
+
+		$this->assertSame( 'Pages', $labels->name );
+	}
+
+	public function test_existing_labels_are_not_overridden() {
+		$labels = get_post_type_labels( (object) array(
+			'name'         => 'foo',
+			'labels'       => array(
+				'singular_name' => 'Foo',
+			),
+			'hierarchical' => false,
+		) );
+
+		$this->assertSame( 'Foo', $labels->singular_name );
+	}
+
+	public function test_name_admin_bar_label_should_fall_back_to_singular_name() {
+		$labels = get_post_type_labels( (object) array(
+			'name'         => 'foo',
+			'labels'       => array(
+				'singular_name' => 'Foo',
+			),
+			'hierarchical' => false,
+		) );
+
+		$this->assertSame( 'Foo', $labels->name_admin_bar );
+	}
+
+
+	public function test_name_admin_bar_label_should_fall_back_to_post_type_name() {
+		$labels = get_post_type_labels( (object) array(
+			'name'         => 'bar',
+			'labels'       => array(),
+			'hierarchical' => false,
+		) );
+
+		$this->assertSame( 'bar', $labels->name_admin_bar );
+	}
+
+	public function test_menu_name_should_fall_back_to_name() {
+		$labels = get_post_type_labels( (object) array(
+			'name'         => 'foo',
+			'labels'       => array(
+				'name' => 'Bar',
+			),
+			'hierarchical' => false,
+		) );
+
+		$this->assertSame( 'Bar', $labels->menu_name );
+	}
+
+	public function test_labels_should_be_added_when_registering_a_post_type() {
+		$post_type_object = register_post_type( 'foo', array(
+			'labels' => array(
+				'singular_name' => 'bar',
+			),
+		) );
+
+		unregister_post_type( 'foo' );
+
+		$this->assertObjectHasAttribute( 'labels', $post_type_object );
+		$this->assertObjectHasAttribute( 'label', $post_type_object );
+		$this->assertObjectHasAttribute( 'not_found_in_trash', $post_type_object->labels );
+	}
+
+	public function test_label_should_be_derived_from_labels_when_registering_a_post_type() {
+		$post_type_object = register_post_type( 'foo', array(
+			'labels' => array(
+				'name' => 'bar',
+			),
+		) );
+
+		$this->assertSame( 'bar', $post_type_object->label );
+
+		unregister_post_type( 'foo' );
+	}
+
+	/**
+	 * @ticket 33543
+	 */
+	public function test_should_fall_back_on_defaults_when_filtered_labels_do_not_contain_the_keys() {
+		add_filter( 'post_type_labels_foo', array( $this, 'filter_post_type_labels' ) );
+		register_post_type( 'foo' );
+
+		$this->assertObjectHasAttribute( 'featured_image', get_post_type_object( 'foo' )->labels );
+		$this->assertObjectHasAttribute( 'set_featured_image', get_post_type_object( 'foo' )->labels );
+
+		unregister_post_type( 'foo' );
+		remove_filter( 'post_type_labels_foo', array( $this, 'filter_post_type_labels' ) );
+	}
+
+	public function filter_post_type_labels( $labels ) {
+		unset( $labels->featured_image );
+		unset( $labels->set_featured_image );
+
+		return $labels;
+	}
+}