Pr 4

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
+

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

test/find_xml_test.rb

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+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

test/test_helper.rb

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+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'
+