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Contents
require "#{File.dirname(__FILE__)}/../../test_helper"
class HashTest < Test::Unit::TestCase
context "Hash" do
setup do
@hsh = {:a => "a", :b => "b", :c => "c"}
end
should "have choose to select hashes" do
assert_equal @hsh.choose {|k,v| k == :a}, {:a => "a"}
assert_equal @hsh.choose {|k,v| k == :z}, {}
assert_equal @hsh.choose {|k,v|[:b,:a].include?(k)}.keys.sort{|a,b|"#{a}"<=>"#{b}"}, [:a,:b]
end
should "be able to call methods on the hash of their keys" do
assert_equal @hsh.a, "a"
assert_equal @hsh.b, "b"
assert_equal @hsh.c, "c"
end
should "compute the differences in the hashes" do
assert_equal ({:a => "a"}).diff({:a => "a"}), {}
assert_equal ({:a => "a"}).diff({:a => "b"}), {:a => "b"}
assert_equal ({:a => "a", :b => "b"}).diff({:a => "b"}, :a), {:a => "b"}
assert_equal ({:a => "a", :b => "b"}).diff({:b => "b"}, :b), {}
assert_equal ({:a => "a", :b => "b"}).diff({:b => "c"}, :b), {:b => "c"}
assert_equal ({:a => "a", :b => "b"}).diff({:b => "c"}), {:b => "c", :a => nil}
assert_equal ({:a => "a", :b => "b"}).diff({:b => "c"}, :a), {:a => nil}
end
end
end
Version data entries
20 entries across 20 versions & 1 rubygems