Issue geerlingguy#1370: Add VirtualBox version requirement check

Vagrantfile

@@ -39,6 +39,7 @@ end
 # Verify version requirements.
 require_ansible_version ">= #{vconfig['drupalvm_ansible_version_min']}"
 Vagrant.require_version ">= #{vconfig['drupalvm_vagrant_version_min']}"
+require_virtualbox_version ">= #{vconfig['drupalvm_virtualbox_version_min']}"
 
 Vagrant.configure('2') do |config|
   # Set the name of the VM. See: http://stackoverflow.com/a/17864388/100134

default.config.yml

@@ -36,6 +36,7 @@ vagrant_cpus: 1
 # Minimum required versions.
 drupalvm_vagrant_version_min: '1.8.6'
 drupalvm_ansible_version_min: '2.2'
+drupalvm_virtualbox_version_min: '5.1.10'
 
 # Force use of ansible_local provisioner, even if Ansible is installed on host.
 force_ansible_local: false

lib/drupalvm/vagrant.rb

@@ -55,6 +55,15 @@ def ansible_version
   /^[^\s]+ (.+)$/.match(`#{ansible_bin} --version`) { |match| return match[1] }
 end
 
+def virtualbox_version
+  begin
+    virtualbox = VagrantPlugins::ProviderVirtualBox::Driver::Meta.new
+    virtualbox.version
+  rescue Vagrant::Errors::VirtualBoxNotDetected
+    nil
+  end
+end
+
 # Require that if installed, the ansible version meets the requirements.
 def require_ansible_version(requirement)
   return unless ansible_bin
@@ -63,6 +72,14 @@ def require_ansible_version(requirement)
   raise_message "You must install an Ansible version #{requirement} to use this version of Drupal VM."
 end
 
+# Require that if installed, the VirtualBox version meets the requirements.
+def require_virtualbox_version(requirement)
+  return unless virtualbox_version
+  req = Gem::Requirement.new(requirement)
+  return if req.satisfied_by?(Gem::Version.new(virtualbox_version))
+  raise_message "You must install a VirtualBox version #{requirement} to use this version of Drupal VM."
+end
+
 def raise_message(msg)
   raise Vagrant::Errors::VagrantError.new, msg
 end