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* 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
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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