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Contents
# _____ _
# |_ _|__ ___| |_
# | |/ _ \/ __| __|
# | | __/\__ \ |
# |_|\___||___/\__|
#
# for lib/facets/enumerable/probability.rb
#
# Extracted Mon Sep 03 16:23:07 -0700 2007
# w/ Test Extraction Ratchet
#
require 'facets/enumerable/probability.rb'
require 'test/unit'
class TestEnumerable < Test::Unit::TestCase
def test_entropy
assert_equal( 1.0, %w{ a b }.entropy )
end
def test_ideal_entropy
assert_equal( 1.0, %w{ a b }.ideal_entropy )
assert_equal( 2.0, %w{ a a b b }.ideal_entropy )
end
def test_probability
assert_equal( {'a'=>0.5,'b'=>0.5}, %w{a b}.probability )
assert_equal( {'tom'=>0.5,'boy'=>0.5}, %w{tom boy}.probability )
end
def test_frequency
assert_equal( {'a'=>1,'b'=>1}, %w{a b}.frequency )
assert_equal( {'tom'=>1,'boy'=>1}, %w{tom boy}.frequency )
end
def test_commonality
a = [1,2,2,3,3,3]
r = { 2 => [2,2], 3 => [3,3,3] }
assert_equal( r, a.commonality )
a = [1,2,2,3,3,3]
r = {false=>[1, 2, 2], true=>[3, 3, 3]}
assert_equal( r, a.commonality { |x| x > 2 } )
end
# def test_collisions
# a = [1,2,2,3,3,3]
# assert_equal( [2,3], a.collisions )
# a = [1,2,2,3,3,3]
# r = {false=>[1, 2, 2], true=>[3, 3, 3]}
# assert_equal( r, a.collisions { |x| x > 2 } )
# end
end
Version data entries
10 entries across 10 versions & 1 rubygems