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Diffstat (limited to 'spec/ruby/library/matrix/columns_spec.rb')
-rw-r--r-- | spec/ruby/library/matrix/columns_spec.rb | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/spec/ruby/library/matrix/columns_spec.rb b/spec/ruby/library/matrix/columns_spec.rb new file mode 100644 index 0000000000..b5fd5633bf --- /dev/null +++ b/spec/ruby/library/matrix/columns_spec.rb @@ -0,0 +1,42 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) +require 'matrix' + +describe "Matrix.columns" do + before :each do + @a = [1, 2] + @b = [3, 4] + @m = Matrix.columns([@a, @b]) + end + + it "creates a Matrix from argument columns" do + @m.should be_an_instance_of(Matrix) + @m.column(0).to_a.should == @a + @m.column(1).to_a.should == @b + end + + it "accepts Vectors as argument columns" do + m = Matrix.columns([Vector[*@a], Vector[*@b]]) + m.should == @m + m.column(0).to_a.should == @a + m.column(1).to_a.should == @b + end + + it "handles empty matrices" do + e = Matrix.columns([]) + e.row_size.should == 0 + e.column_size.should == 0 + e.should == Matrix[] + + v = Matrix.columns([[],[],[]]) + v.row_size.should == 0 + v.column_size.should == 3 + v.should == Matrix[[], [], []].transpose + end + + describe "for a subclass of Matrix" do + it "returns an instance of that subclass" do + MatrixSub.columns([[1]]).should be_an_instance_of(MatrixSub) + end + end +end |