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Diffstat (limited to 'test/matrix')
| -rw-r--r-- | test/matrix/test_matrix.rb | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/test/matrix/test_matrix.rb b/test/matrix/test_matrix.rb index 2412f00822..e38db709a6 100644 --- a/test/matrix/test_matrix.rb +++ b/test/matrix/test_matrix.rb @@ -262,6 +262,17 @@ class TestMatrix < Test::Unit::TestCase assert_raise(ArgumentError) { @m1.first_minor(-1, 4) } end + def test_cofactor + assert_equal(1, Matrix[[1]].cofactor(0, 0)) + assert_equal(9, Matrix[[7,6],[3,9]].cofactor(0, 0)) + assert_equal(0, Matrix[[0,0],[0,0]].cofactor(0, 0)) + assert_equal(3, Matrix[[0,0,1],[0,7,6],[1,3,9]].cofactor(1, 0)) + assert_equal(-21, Matrix[[7,0,1,0,12],[8,1,1,9,1],[4,0,0,-7,17],[-1,0,0,-4,8],[10,1,1,8,6]].cofactor(2, 3)) + assert_raise(RuntimeError) { Matrix.empty(0, 0).cofactor(0, 0) } + assert_raise(ArgumentError) { Matrix[[0,0],[0,0]].cofactor(-1, 4) } + assert_raise(ExceptionForMatrix::ErrDimensionMismatch) { Matrix[[2,0,1],[0,-2,2]].cofactor(0, 0) } + end + def test_regular? assert(Matrix[[1, 0], [0, 1]].regular?) assert(Matrix[[1, 0, 0], [0, 1, 0], [0, 0, 1]].regular?) |