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authornobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2010-01-09 20:35:28 +0000
committernobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2010-01-09 20:35:28 +0000
commit2ae2d9dd4dae4089bc1c0a813cd520734ad33d28 (patch)
tree0db059ee0330d04d475ab5d17f116a88d92171dd /test
parent6051cf527b70173a675a51084894be4dce56a0bd (diff)
* lib/matrix.rb (Matrix#inverse_from): use #quo. backported r9490.
* lib/matrix.rb (Matrix#determinant): ditto. [ruby-core:27507] * lib/matrix.rb (Matrix#rank): ditto. * lib/matrix.rb (Matrix::Scalar#initialize): ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@26263 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test')
-rw-r--r--test/matrix/test_matrix.rb107
1 files changed, 107 insertions, 0 deletions
diff --git a/test/matrix/test_matrix.rb b/test/matrix/test_matrix.rb
index 0850117b86..6b9b587c6d 100644
--- a/test/matrix/test_matrix.rb
+++ b/test/matrix/test_matrix.rb
@@ -46,4 +46,111 @@ class TestMatrix < Test::Unit::TestCase
assert_equal @m1.hash, @m2.hash
assert_equal @m1.hash, @m3.hash
end
+
+ def test_rank
+ [
+ [[0]],
+ [[0], [0]],
+ [[0, 0], [0, 0]],
+ [[0, 0], [0, 0], [0, 0]],
+ [[0, 0, 0]],
+ [[0, 0, 0], [0, 0, 0]],
+ [[0, 0, 0], [0, 0, 0], [0, 0, 0]],
+ [[0, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0]],
+ ].each do |rows|
+ assert_equal 0, Matrix[*rows].rank
+ end
+
+ [
+ [[1], [0]],
+ [[1, 0], [0, 0]],
+ [[1, 0], [1, 0]],
+ [[0, 0], [1, 0]],
+ [[1, 0], [0, 0], [0, 0]],
+ [[0, 0], [1, 0], [0, 0]],
+ [[0, 0], [0, 0], [1, 0]],
+ [[1, 0], [1, 0], [0, 0]],
+ [[0, 0], [1, 0], [1, 0]],
+ [[1, 0], [1, 0], [1, 0]],
+ [[1, 0, 0]],
+ [[1, 0, 0], [0, 0, 0]],
+ [[0, 0, 0], [1, 0, 0]],
+ [[1, 0, 0], [1, 0, 0]],
+ [[1, 0, 0], [1, 0, 0]],
+ [[1, 0, 0], [0, 0, 0], [0, 0, 0]],
+ [[0, 0, 0], [1, 0, 0], [0, 0, 0]],
+ [[0, 0, 0], [0, 0, 0], [1, 0, 0]],
+ [[1, 0, 0], [1, 0, 0], [0, 0, 0]],
+ [[0, 0, 0], [1, 0, 0], [1, 0, 0]],
+ [[1, 0, 0], [0, 0, 0], [1, 0, 0]],
+ [[1, 0, 0], [1, 0, 0], [1, 0, 0]],
+ [[1, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0]],
+ [[1, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0]],
+ [[1, 0, 0], [1, 0, 0], [0, 0, 0], [0, 0, 0]],
+ [[1, 0, 0], [0, 0, 0], [1, 0, 0], [0, 0, 0]],
+ [[1, 0, 0], [0, 0, 0], [0, 0, 0], [1, 0, 0]],
+ [[1, 0, 0], [1, 0, 0], [1, 0, 0], [0, 0, 0]],
+ [[1, 0, 0], [0, 0, 0], [1, 0, 0], [1, 0, 0]],
+ [[1, 0, 0], [1, 0, 0], [0, 0, 0], [1, 0, 0]],
+ [[1, 0, 0], [1, 0, 0], [1, 0, 0], [1, 0, 0]],
+
+ [[1]],
+ [[1], [1]],
+ [[1, 1]],
+ [[1, 1], [1, 1]],
+ [[1, 1], [1, 1], [1, 1]],
+ [[1, 1, 1]],
+ [[1, 1, 1], [1, 1, 1]],
+ [[1, 1, 1], [1, 1, 1], [1, 1, 1]],
+ [[1, 1, 1], [1, 1, 1], [1, 1, 1], [1, 1, 1]],
+ ].each do |rows|
+ matrix = Matrix[*rows]
+ assert_equal 1, matrix.rank
+ assert_equal 1, matrix.transpose.rank
+ end
+
+ [
+ [[1, 0], [0, 1]],
+ [[1, 0], [0, 1], [0, 0]],
+ [[1, 0], [0, 1], [0, 1]],
+ [[1, 0], [0, 1], [1, 1]],
+ [[1, 0, 0], [0, 1, 0]],
+ [[1, 0, 0], [0, 0, 1]],
+ [[1, 0, 0], [0, 1, 0], [0, 0, 0]],
+ [[1, 0, 0], [0, 0, 1], [0, 0, 0]],
+
+ [[1, 0, 0], [0, 0, 0], [0, 1, 0]],
+ [[1, 0, 0], [0, 0, 0], [0, 0, 1]],
+
+ [[1, 0], [1, 1]],
+ [[1, 2], [1, 1]],
+ [[1, 2], [0, 1], [1, 1]],
+ ].each do |rows|
+ m = Matrix[*rows]
+ assert_equal 2, m.rank
+ assert_equal 2, m.transpose.rank
+ end
+
+ [
+ [[1, 0, 0], [0, 1, 0], [0, 0, 1]],
+ [[1, 1, 0], [0, 1, 1], [1, 0, 1]],
+ [[1, 1, 0], [0, 1, 1], [1, 0, 1]],
+ [[1, 1, 0], [0, 1, 1], [1, 0, 1], [0, 0, 0]],
+ [[1, 1, 0], [0, 1, 1], [1, 0, 1], [1, 1, 1]],
+ [[1, 1, 1], [1, 1, 2], [1, 3, 1], [4, 1, 1]],
+ ].each do |rows|
+ m = Matrix[*rows]
+ assert_equal 3, m.rank
+ assert_equal 3, m.transpose.rank
+ end
+ end
+
+ def test_inverse
+ assert_equal(Matrix[[-1, 1], [0, -1]], Matrix[[-1, -1], [0, -1]].inverse)
+ end
+
+ def test_determinant
+ assert_equal(45, Matrix[[7,6], [3,9]].determinant)
+ assert_equal(-18, Matrix[[2,0,1],[0,-2,2],[1,2,3]].determinant)
+ end
end