diff --git a/spec/defines/configfile_spec.rb b/spec/defines/configfile_spec.rb
new file mode 100644
index 0000000..0fd1364
--- /dev/null
+++ b/spec/defines/configfile_spec.rb
@@ -0,0 +1,65 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'caddy::configfile', type: :define do
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let(:facts) do
+        facts
+      end
+      let(:pre_condition) { 'class { "caddy": config_dir => "/etc/caddy/config" }' }
+      let(:title) { 'example' }
+
+      context 'with source' do
+        let(:params) { { source: 'puppet:///modules/caddy/etc/caddy/config/example1.conf' } }
+
+        it do
+          is_expected.to contain_file('/etc/caddy/config/example.conf').with(
+            'ensure' => 'file',
+            'source' => 'puppet:///modules/caddy/etc/caddy/config/example1.conf',
+            'mode' => '0444',
+            'require' => 'Class[Caddy::Config]',
+            'notify' => 'Class[Caddy::Service]'
+          )
+        end
+
+        context 'with config_dir set' do
+          let(:params) { super().merge(config_dir: '/etc/caddy/conf.d') }
+
+          it { is_expected.to contain_file('/etc/caddy/conf.d/example.conf') }
+        end
+
+        context 'with ensure => absent' do
+          let(:params) { super().merge(ensure: 'absent') }
+
+          it { is_expected.to contain_file('/etc/caddy/config/example.conf').with_ensure('absent') }
+        end
+
+        context 'with custom title' do
+          let(:title) { 'test' }
+
+          it { is_expected.to contain_file('/etc/caddy/config/test.conf') }
+        end
+      end
+
+      context 'with content' do
+        let(:params) { { content: 'localhost:2015' } }
+
+        it do
+          is_expected.to contain_file('/etc/caddy/config/example.conf').with(
+            'ensure' => 'file',
+            'content' => 'localhost:2015',
+            'mode' => '0444',
+            'require' => 'Class[Caddy::Config]',
+            'notify' => 'Class[Caddy::Service]'
+          )
+        end
+      end
+
+      context 'without source & content' do
+        it { is_expected.to compile.and_raise_error(%r{Either \$source or \$content must be specified}) }
+      end
+    end
+  end
+end