diff options
| author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-09-20 20:18:52 +0000 |
|---|---|---|
| committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-09-20 20:18:52 +0000 |
| commit | 1d15d5f08032acf1b7bceacbb450d617ff6e0931 (patch) | |
| tree | a3785a79899302bc149e4a6e72f624ac27dc1f10 /spec/ruby/library/matrix/shared/inverse.rb | |
| parent | 75bfc6440d595bf339007f4fb280fd4d743e89c1 (diff) | |
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/shared/inverse.rb')
| -rw-r--r-- | spec/ruby/library/matrix/shared/inverse.rb | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/spec/ruby/library/matrix/shared/inverse.rb b/spec/ruby/library/matrix/shared/inverse.rb new file mode 100644 index 0000000000..c6996df4a3 --- /dev/null +++ b/spec/ruby/library/matrix/shared/inverse.rb @@ -0,0 +1,38 @@ +require File.expand_path('../../fixtures/classes', __FILE__) +require 'matrix' + +describe :inverse, shared: true do + + it "returns a Matrix" do + Matrix[ [1,2], [2,1] ].send(@method).should be_an_instance_of(Matrix) + end + + it "returns the inverse of the Matrix" do + Matrix[ + [1, 3, 3], [1, 4, 3], [1, 3, 4] + ].send(@method).should == + Matrix[ + [7, -3, -3], [-1, 1, 0], [-1, 0, 1] + ] + end + + it "returns the inverse of the Matrix (other case)" do + Matrix[ + [1, 2, 3], [0, 1, 4], [5, 6, 0] + ].send(@method).should be_close_to_matrix([ + [-24, 18, 5], [20, -15, -4], [-5, 4, 1] + ]) + end + + it "raises a ErrDimensionMismatch if the Matrix is not square" do + lambda{ + Matrix[ [1,2,3], [1,2,3] ].send(@method) + }.should raise_error(Matrix::ErrDimensionMismatch) + end + + describe "for a subclass of Matrix" do + it "returns an instance of that subclass" do + MatrixSub.ins.send(@method).should be_an_instance_of(MatrixSub) + end + end +end |