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* For easier modifications of ruby/spec by MRI developers. * .gitignore: track changes under spec. * spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec. These files can therefore be updated like any other file in MRI. Instructions are provided in spec/README. [Feature #13156] [ruby-core:79246] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
12 lines
343 B
Ruby
12 lines
343 B
Ruby
require 'matrix'
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describe :trace, shared: true do
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it "returns the sum of diagonal elements in a square Matrix" do
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Matrix[[7,6], [3,9]].trace.should == 16
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end
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it "returns the sum of diagonal elements in a rectangular Matrix" do
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lambda{ Matrix[[1,2,3], [4,5,6]].trace}.should raise_error(Matrix::ErrDimensionMismatch)
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end
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end
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