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* lib/matrix.rb: Add first_minor [fix GH-568]

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Patch by gogotanaka

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45527 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
marcandre 2014-04-06 17:45:54 +00:00
parent 1657d516e9
commit b8ba202301
3 changed files with 46 additions and 0 deletions
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12
test/matrix/test_matrix.rb
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@ -250,6 +250,18 @@ class TestMatrix < Test::Unit::TestCase
assert_raise(ArgumentError) { @m1.minor(0) }
end
def test_first_minor
assert_equal(Matrix.empty(0, 0), Matrix[[1]].first_minor(0, 0))
assert_equal(Matrix.empty(0, 2), Matrix[[1, 4, 2]].first_minor(0, 1))
assert_equal(Matrix[[1, 3]], @m1.first_minor(1, 1))
assert_equal(Matrix[[4, 6]], @m1.first_minor(0, 1))
assert_equal(Matrix[[1, 2]], @m1.first_minor(1, 2))
assert_raise(RuntimeError) { Matrix.empty(0, 0).first_minor(0, 0) }
assert_raise(ArgumentError) { @m1.first_minor(4, 0) }
assert_raise(ArgumentError) { @m1.first_minor(0, -1) }
assert_raise(ArgumentError) { @m1.first_minor(-1, 4) }
end
def test_regular?
assert(Matrix[[1, 0], [0, 1]].regular?)
assert(Matrix[[1, 0, 0], [0, 1, 0], [0, 0, 1]].regular?)