use ConfigurationError to describe YAML errors

Author: ianfixes

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Changed
 - Simplified the use of `Array.each` with a return statement; it's now simply `Array.find`
 - `autolocate!` for Arduino installations now raises `ArduinoInstallationError` if `force_install` fails
+- Errors due to missing YAML are now named `ConfigurationError`
 
 ### Deprecated
 

lib/arduino_ci/ci_config.rb

@@ -35,6 +35,8 @@
 }.freeze
 module ArduinoCI
 
+  class ConfigurationError < StandardError; end
+
   # The filename controlling (overriding) the defaults for testing.
   # Files with this name can be used in the root directory of the Arduino library and in any/all of the example directories
   CONFIG_FILENAMES = [
@@ -108,7 +110,7 @@ def validate_data(rootname, source, schema)
     # @return [ArduinoCI::CIConfig] a reference to self
     def load_yaml(path)
       yml = YAML.load_file(path)
-      raise "The YAML file at #{path} failed to load" unless yml
+      raise ConfigurationError, "The YAML file at #{path} failed to load" unless yml
 
       if yml.include?("packages")
         yml["packages"].each do |k, v|