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author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-09-20 20:18:52 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-09-20 20:18:52 +0000 |
commit | 1d15d5f08032acf1b7bceacbb450d617ff6e0931 (patch) | |
tree | a3785a79899302bc149e4a6e72f624ac27dc1f10 /spec/ruby/library/matrix/lup_decomposition/solve_spec.rb | |
parent | 75bfc6440d595bf339007f4fb280fd4d743e89c1 (diff) | |
download | ruby-1d15d5f08032acf1b7bceacbb450d617ff6e0931.tar.gz |
Move spec/rubyspec to spec/ruby for consistency
* Other ruby implementations use the spec/ruby directory.
[Misc #13792] [ruby-core:82287]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/ruby/library/matrix/lup_decomposition/solve_spec.rb')
-rw-r--r-- | spec/ruby/library/matrix/lup_decomposition/solve_spec.rb | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/spec/ruby/library/matrix/lup_decomposition/solve_spec.rb b/spec/ruby/library/matrix/lup_decomposition/solve_spec.rb new file mode 100644 index 0000000000..c4ef42bcea --- /dev/null +++ b/spec/ruby/library/matrix/lup_decomposition/solve_spec.rb @@ -0,0 +1,53 @@ +require File.expand_path('../../../../spec_helper', __FILE__) +require 'matrix' + +describe "Matrix::LUPDecomposition#solve" do + describe "for rectangular matrices" do + it "raises an error for singular matrices" do + a = Matrix[[1, 2, 3], [1, 3, 5], [2, 5, 8]] + lu = Matrix::LUPDecomposition.new(a) + lambda { + lu.solve(a) + }.should raise_error(Matrix::ErrNotRegular) + end + + describe "for non singular matrices" do + before :each do + @a = Matrix[[7, 8, 9], [14, 46, 51], [28, 82, 163]] + @lu = Matrix::LUPDecomposition.new(@a) + end + + it "returns the appropriate empty matrix when given an empty matrix" do + @lu.solve(Matrix.empty(3,0)).should == Matrix.empty(3,0) + empty = Matrix::LUPDecomposition.new(Matrix.empty(0, 0)) + empty.solve(Matrix.empty(0,3)).should == Matrix.empty(0,3) + end + + it "returns the right matrix when given a matrix of the appropriate size" do + solution = Matrix[[1, 2, 3, 4], [0, 1, 2, 3], [-1, -2, -3, -4]] + values = Matrix[[-2, 4, 10, 16], [-37, -28, -19, -10], [-135, -188, -241, -294]] # == @a * solution + @lu.solve(values).should == solution + end + + it "raises an error when given a matrix of the wrong size" do + values = Matrix[[1, 2, 3, 4], [0, 1, 2, 3]] + lambda { + @lu.solve(values) + }.should raise_error(Matrix::ErrDimensionMismatch) + end + + it "returns the right vector when given a vector of the appropriate size" do + solution = Vector[1, 2, -1] + values = Vector[14, 55, 29] # == @a * solution + @lu.solve(values).should == solution + end + + it "raises an error when given a vector of the wrong size" do + values = Vector[14, 55] + lambda { + @lu.solve(values) + }.should raise_error(Matrix::ErrDimensionMismatch) + end + end + end +end |