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require 'abstract_unit'
require 'active_support/core_ext/integer'
class IntegerExtTest < ActiveSupport::TestCase
PRIME = 22953686867719691230002707821868552601124472329079
def test_multiple_of
[ -7, 0, 7, 14 ].each { |i| assert i.multiple_of?(7) }
[ -7, 7, 14 ].each { |i| assert ! i.multiple_of?(6) }
# test the 0 edge case
assert 0.multiple_of?(0)
assert !5.multiple_of?(0)
# test with a prime
[2, 3, 5, 7].each { |i| assert !PRIME.multiple_of?(i) }
end
def test_ordinalize
# These tests are mostly just to ensure that the ordinalize method exists.
# Its results are tested comprehensively in the inflector test cases.
assert_equal '1st', 1.ordinalize
assert_equal '8th', 8.ordinalize
end
def test_ordinal
assert_equal 'st', 1.ordinal
assert_equal 'th', 8.ordinal
end
def test_positive
assert 1.positive?
assert_not 0.positive?
assert_not(-1.positive?)
end
def test_negative
assert(-1.negative?)
assert_not 0.negative?
assert_not 1.negative?
end
end
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