Trip exercise, initial slightly changed version

.ruby-version

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+2.6.3

trip_exercise.rb

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+require "minitest/autorun"
+
+################################################################################
+# Tests
+
+class TravelTest < Minitest::Test
+  def self.test_order
+    :sorted
+  end
+
+  def test_location
+    skip # Remove this 'skip' instruction if you want to run the test
+
+    paris = Location.new("Paris", "French", "Euro")
+
+    assert_equal "Paris", paris.name
+    assert_equal "French", paris.language
+    assert_equal "Euro", paris.currency
+  end
+
+  def test_trip_to_paris
+    skip # Remove this 'skip' instruction if you want to run the test
+
+    zurich = Location.new("Zurich", "Swiss-German", "Swiss francs")
+    paris = Location.new("Paris", "French", "Euro")
+    trip = Trip.new(zurich)
+    trip.add_stop(paris)
+
+    assert_equal ["Zurich", "Paris", "Zurich"], trip.itinerary
+    assert_equal ["Euro"], trip.foreign_currencies
+  end
+
+  def test_longer_trip
+    skip # Remove this 'skip' instruction if you want to run the test
+
+    trip = Trip.new(Location.new("Zurich", "Swiss-German", "Swiss francs"))
+    trip.add_stop(Location.new("Milan", "Italian", "Euro"))
+    trip.add_stop(Location.new("Zagreb", "Croatian", "Kuna"))
+    trip.add_stop(Location.new("Budapest", "Hungarian", "Forint"))
+    trip.add_stop(Location.new("Vienna", "German", "Euro"))
+
+    assert_equal ["Zurich", "Milan", "Zagreb", "Budapest", "Vienna", "Zurich"], trip.itinerary
+    assert_equal ["Euro", "Kuna", "Forint"], trip.foreign_currencies
+  end
+end
+
+################################################################################
+# Code under test
+
+# TODO: Implement the code that makes the tests pass here!