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require 'test_helper'
class CombinationTest < GSL::TestCase
def setup
@c63 = GSL::Matrix.alloc(
[0, 1, 2],
[0, 1, 3],
[0, 1, 4],
[0, 1, 5],
[0, 2, 3],
[0, 2, 4],
[0, 2, 5],
[0, 3, 4],
[0, 3, 5],
[0, 4, 5],
[1, 2, 3],
[1, 2, 4],
[1, 2, 5],
[1, 3, 4],
[1, 3, 5],
[1, 4, 5],
[2, 3, 4],
[2, 3, 5],
[2, 4, 5],
[3, 4, 5]
)
end
def test_6_3
c = GSL::Combination.alloc(6, 3)
c.init_first
status, i = false, 0
begin
if i >= 20
status = true
break
end
3.times { |j| status |= c.data[j] != @c63[i, j] }
refute c.valid?, 'GSL::Combination#valid(%u)' % i
i += 1
end while c.next == GSL::SUCCESS
refute status, 'GSL::Combination#next, 6 choose 3 combination, 20 steps'
3.times { c.next }
3.times { |j| status |= c.data[j] != @c63[19, j] }
refute status, 'GSL::Combination#prev on the first combination'
refute c.valid?, 'GSL::Combination#valid on the last combination'
d = GSL::Combination.alloc(6, 3)
GSL::Combination.memcpy(d, c)
status = false
3.times { |j| status |= d.data[j] != c.data[j] }
refute status, 'GSL::Combination.memcpy, 6 choose 3 combination'
c.init_last
i = 20
begin
if i == 0
status = true
break
end
i -= 1
3.times { |j| status |= c.data[j] != @c63[i, j] }
refute c.valid?, 'GSL::Combination#valid(%u)' % i
end while c.prev == GSL::SUCCESS
refute status, 'GSL::Combination#prev, 6 choose 3 combination, 20 steps'
3.times { c.prev }
3.times { |j| status |= c.data[j] != @c63[0, j] }
refute status, 'GSL::Combination#prev on the first combination'
refute c.valid?, 'GSL::Combination#valid on the first combination'
d = GSL::Combination.alloc(6, 3)
GSL::Combination.memcpy(d, c)
status = false
3.times { |j| status |= d.data[j] != c.data[j] }
refute status, 'GSL::Combination.memcpy, 6 choose 3 combination'
end
def test_7_0
c, desc = GSL::Combination.calloc(7, 0), 'GSL::Combination 7 choose 0'
2.times { assert c.next == GSL::FAILURE, desc }
2.times { assert c.prev == GSL::FAILURE, desc }
end
def test_7_7
c, desc = GSL::Combination.calloc(7, 7), 'GSL::Combination 7 choose 7'
3.times {
7.times { |j| assert c.get(j) == j, desc }
assert c.next == GSL::FAILURE, desc
}
7.times { |j| assert c.get(j) == j, desc }
end
end
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