diff --git a/Rakefile b/Rakefile
new file mode 100644
index 0000000..b5ea720
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,10 @@
+require 'rake/testtask'
+
+Rake::TestTask.new do |t|
+  t.libs = ["lib"]
+  t.warning = true
+  t.test_files = FileList['test/*_test.rb']
+end
+
+task default: :test
+
diff --git a/find_xml_file.rb b/find_xml_file.rb
new file mode 100644
index 0000000..f848fd3
--- /dev/null
+++ b/find_xml_file.rb
@@ -0,0 +1,15 @@
+
+def find_xml_file(folder)
+  files = Dir.entries(folder)
+
+  xml_file = nil
+
+  files.each do |filename|
+    if filename.match "\.xml$"
+      xml_file = filename
+      break
+    end
+  end
+  
+  return xml_file
+end
diff --git a/test/find_xml_test.rb b/test/find_xml_test.rb
new file mode 100644
index 0000000..09af9d2
--- /dev/null
+++ b/test/find_xml_test.rb
@@ -0,0 +1,11 @@
+require_relative 'test_helper'
+
+describe "find_xml_file" do
+  it "should return nil if there are no xml files" do
+    expect(find_xml_file('.')).must_be_nil
+  end
+
+  it "should return an xml file if it's in the folder" do
+    expect(find_xml_file('./test/test_data')).must_equal "example.xml"
+  end
+end
diff --git a/test/test_data/example.xml b/test/test_data/example.xml
new file mode 100644
index 0000000..e69de29
diff --git a/test/test_helper.rb b/test/test_helper.rb
new file mode 100644
index 0000000..04be228
--- /dev/null
+++ b/test/test_helper.rb
@@ -0,0 +1,13 @@
+require 'minitest'
+require 'minitest/autorun'
+require 'minitest/reporters'
+require 'minitest/skip_dsl'
+require 'awesome_print'
+# Add simplecov
+
+Minitest::Reporters.use! Minitest::Reporters::SpecReporter.new
+
+# Require_relative your lib files here!
+
+require_relative '../find_xml_file.rb'
+