diff --git a/tests/phpunit/tests/functions/xmlrpc.php b/tests/phpunit/tests/functions/xmlrpc.php
new file mode 100644
index 0000000000..20164e2e4f
--- /dev/null
+++ b/tests/phpunit/tests/functions/xmlrpc.php
@@ -0,0 +1,68 @@
+<?php
+
+/**
+ * @group xmlrpc
+ * @ticket 53490
+ */
+class Tests_Functions_XMLRPC extends WP_UnitTestCase {
+
+	private $test_content = '
+			<title>title</title>
+			<category>category,category1</category>
+			<content>content</content>
+		';
+
+	/**
+	 * Tests that xmlrpc_getposttitle() returns the post title if found in the XML.
+	 *
+	 * @covers ::xmlrpc_getposttitle
+	 */
+	public function test_xmlrpc_getposttitle() {
+		$this->assertSame( 'title', xmlrpc_getposttitle( $this->test_content ) );
+	}
+
+	/**
+	 * Tests that xmlrpc_getposttitle() defaults to the `$post_default_title` global.
+	 *
+	 * @covers ::xmlrpc_getposttitle
+	 */
+	public function test_xmlrpc_getposttitle_default() {
+		global $post_default_title;
+
+		$post_default_title = 'post_default_title';
+
+		$this->assertSame( 'post_default_title', xmlrpc_getposttitle( '' ) );
+	}
+
+
+	/**
+	 * Tests that xmlrpc_getpostcategory() returns post categories if found in the XML.
+	 *
+	 * @covers ::xmlrpc_getpostcategory
+	 */
+	public function test_xmlrpc_getpostcategory() {
+		$this->assertSame( array( 'category', 'category1' ), xmlrpc_getpostcategory( $this->test_content ) );
+	}
+
+	/**
+	 * Tests that xmlrpc_getpostcategory() defaults to the `$post_default_category` global.
+	 *
+	 * @covers ::xmlrpc_getpostcategory
+	 */
+	public function test_xmlrpc_getpostcategory_default() {
+		global $post_default_category;
+
+		$post_default_category = 'post_default_category';
+
+		$this->assertSame( 'post_default_category', xmlrpc_getpostcategory( '' ) );
+	}
+
+	/**
+	 * Tests that xmlrpc_removepostdata() returns XML content without title and category elements.
+	 *
+	 * @covers ::xmlrpc_removepostdata
+	 */
+	public function test_xmlrpc_removepostdata() {
+		$this->assertSame( '<content>content</content>', xmlrpc_removepostdata( $this->test_content ) );
+	}
+}