Augment opera (#2170)

* Augment Opera generator

* Augment opera doc

* Appease rubo God

* Add tests. Update Gemfile.

doc/music/opera.md

@@ -8,4 +8,40 @@ Faker::Music::Opera.rossini #=> "Il Barbiere di Siviglia"
 Faker::Music::Opera.donizetti #=> "Lucia di Lammermoor"
 
 Faker::Music::Opera.bellini #=> "Norma"
-```
+
+Faker::Music::Opera.mozart #=> "Die Zauberfloete"
+
+Faker::Music::Opera.mozart_italian #=> "Cosi fan tutte"
+
+Faker::Music::Opera.mozart_german #=> "Die Zauberfloete"
+
+Faker::Music::Opera.gluck #=> "Orfeo ed Euridice"
+
+Faker::Music::Opera.gluck_italian #=> "Orfeo ed Euridice"
+
+Faker::Music::Opera.gluck_french #=> "Orphee et Euridice"
+
+Faker::Music::Opera.beethoven #=> "Fidelio"
+
+Faker::Music::Opera.weber #=> "Der Freischuetz"
+
+Faker::Music::Opera.strauss #=> "Elektra"
+
+Faker::Music::Opera.wagner #=> "Tristan und Isolde"
+
+Faker::Music::Opera.schumann #=> "Genoveva"
+
+Faker::Music::Opera.schubert #=> "Alfonso und Estrella"
+
+Faker::Music::Opera.berg #=> "Wozzeck"
+
+Faker::Music::Opera.ravel #=> "L'enfant et les sortileges"
+
+Faker::Music::Opera.berlioz #=> "Les Troyens"
+
+Faker::Music::Opera.bizet #=> "Carmen"
+
+Faker::Music::Opera.gounod #=> "Faust"
+
+Faker::Music::Opera.saint_saens #=> "Samson and Delilah"
+```

lib/faker/music/opera.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Faker
-  # A generator of titles of operas by Verdi, Rossini, Donizetti and Bellini
+  # A generator of titles of operas by various composers
   class Music
     class Opera < Base
       class << self
@@ -56,6 +56,242 @@ def donizetti
         def bellini
           fetch('opera.italian.by_vincenzo_bellini')
         end
+
+        ##
+        # Produces the title of an opera by Wolfgang Amadeus Mozart.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.mozart #=> "Die Zauberfloete"
+        #
+        # @faker.version next
+        def mozart
+          fetch('opera.italian.by_wolfgang_amadeus_mozart') +
+            fetch('opera.german.by_wolfgang_amadeus_mozart')
+        end
+
+        ##
+        # Produces the title of an Italian opera by Wolfgang Amadeus Mozart.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.mozart_it #=> "Cosi fan tutte"
+        #
+        # @faker.version next
+        def mozart_italian
+          fetch('opera.italian.by_wolfgang_amadeus_mozart')
+        end
+
+        ##
+        # Produces the title of a German opera by Wolfgang Amadeus Mozart.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.mozart_ger #=> "Die Zauberfloete"
+        #
+        # @faker.version next
+        def mozart_german
+          fetch('opera.german.by_wolfgang_amadeus_mozart')
+        end
+
+        ##
+        # Produces the title of an opera by Christoph Willibald Gluck.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.gluck #=> "Orfeo ed Euridice"
+        #
+        # @faker.version next
+        def gluck
+          fetch('opera.italian.by_christoph_willibald_gluck') +
+            fetch('opera.french.by_christoph_willibald_gluck')
+        end
+
+        ##
+        # Produces the title of an Italian opera by Christoph Willibald Gluck.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.gluck_it #=> "Orfeo ed Euridice"
+        #
+        # @faker.version next
+        def gluck_italian
+          fetch('opera.italian.by_christoph_willibald_gluck')
+        end
+
+        ##
+        # Produces the title of a French opera by Christoph Willibald Gluck.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.gluck_fr #=> "Orphee et Euridice"
+        #
+        # @faker.version next
+        def gluck_french
+          fetch('opera.french.by_christoph_willibald_gluck')
+        end
+
+        ##
+        # Produces the title of an opera by Ludwig van Beethoven.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.beethoven #=> "Fidelio"
+        #
+        # @faker.version next
+        def beethoven
+          fetch('opera.german.by_ludwig_van_beethoven')
+        end
+
+        ##
+        # Produces the title of an opera by Carl Maria von Weber.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.weber #=> "Der Freischuetz"
+        #
+        # @faker.version next
+        def weber
+          fetch('opera.german.by_carl_maria_von_weber')
+        end
+
+        ##
+        # Produces the title of an opera by Richard Strauss.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.strauss #=> "Elektra"
+        #
+        # @faker.version next
+        def strauss
+          fetch('opera.german.by_richard_strauss')
+        end
+
+        ##
+        # Produces the title of an opera by Richard Wagner.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.wagner #=> "Tristan und Isolde"
+        #
+        # @faker.version next
+        def wagner
+          fetch('opera.german.by_richard_wagner')
+        end
+
+        ##
+        # Produces the title of an opera by Robert Schumann.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.schumann #=> "Genoveva"
+        #
+        # @faker.version next
+        def schumann
+          fetch('opera.german.by_robert_schumann')
+        end
+
+        ##
+        # Produces the title of an opera by Franz Schubert.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.schubert #=> "Alfonso und Estrella"
+        #
+        # @faker.version next
+        def schubert
+          fetch('opera.german.by_franz_schubert')
+        end
+
+        ##
+        # Produces the title of an opera by Alban Berg.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.berg #=> "Wozzeck"
+        #
+        # @faker.version next
+        def berg
+          fetch('opera.german.by_alban_berg')
+        end
+
+        ##
+        # Produces the title of an opera by Maurice Ravel.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.ravel #=> "L'enfant et les sortileges"
+        #
+        # @faker.version next
+        def ravel
+          fetch('opera.french.by_maurice_ravel')
+        end
+
+        ##
+        # Produces the title of an opera by Hector Berlioz.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.berlioz #=> "Les Troyens"
+        #
+        # @faker.version next
+        def berlioz
+          fetch('opera.french.by_hector_berlioz')
+        end
+
+        ##
+        # Produces the title of an opera by Georges Bizet.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.bizet #=> "Carmen"
+        #
+        # @faker.version next
+        def bizet
+          fetch('opera.french.by_georges_bizet')
+        end
+
+        ##
+        # Produces the title of an opera by Charles Gounod.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.gounod #=> "Faust"
+        #
+        # @faker.version next
+        def gounod
+          fetch('opera.french.by_charles_gounod')
+        end
+
+        ##
+        # Produces the title of an opera by Camille Saint-Saens.
+        #
+        # @return [String]
+        #
+        # @example
+        #   Faker::Music::Opera.saint_saens #=> "Samson and Delilah"
+        #
+        # @faker.version next
+        def saint_saens
+          fetch('opera.french.by_camille_saint_saens')
+        end
       end
     end
   end