Created
February 14, 2013 14:53
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# Implementing http://beust.com/weblog/2013/02/13/coding-challenge-light-edition in Ruby | |
# Contract for eql? and hash as per: http://stackoverflow.com/questions/2328685/how-to-make-object-instance-a-hash-key-in-ruby | |
class School | |
attr_accessor :name, :nickname | |
def initialize(name, nickname) | |
self.name = name | |
self.nickname = nickname | |
end | |
def eql?(other) | |
self.name == other.name || self.nickname == other.nickname | |
end | |
def hash() | |
[self.name, self.nickname].hash | |
end | |
end |
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require "test_helper" | |
class SchoolTest < ActiveSupport::TestCase | |
def setup | |
@school = School.new("James Madison University", "JMU" ) | |
@identical_school = School.new("James Madison University", "JMU" ) | |
@different_name = School.new("James Madison", "JMU") | |
@different_nick = School.new("James Madison University", "Dukes" ) | |
@different_school = School.new("University of Virginia", "UVA" ) | |
end | |
test "equality" do | |
assert @school.eql?(@identical_school) | |
assert @school.eql?(@different_name) | |
assert @school.eql?(@different_nick) | |
refute @school.eql?(@different_school) | |
end | |
test "Hash" do | |
assert_equal Fixnum, @school.hash.class | |
assert_equal @school.hash, @identical_school.hash | |
end | |
end |
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