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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
42 lines
1.3 KiB
Ruby
42 lines
1.3 KiB
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
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require File.expand_path('../fixtures/classes', __FILE__)
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require 'matrix'
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describe "Matrix#real?" do
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it "returns true for matrices with all real entries" do
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Matrix[ [1, 2], [3, 4] ].real?.should be_true
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Matrix[ [1.9, 2], [3, 4] ].real?.should be_true
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end
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it "returns true for empty matrices" do
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Matrix.empty.real?.should be_true
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end
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it "returns false if one element is a Complex" do
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Matrix[ [Complex(1,1), 2], [3, 4] ].real?.should be_false
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end
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conflicts_with :CMath do
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it "returns false if one element is a Complex whose imaginary part is 0" do
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Matrix[ [Complex(1,0), 2], [3, 4] ].real?.should be_false
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end
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end
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end
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describe "Matrix#real" do
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it "returns a matrix with the real part of the elements of the receiver" do
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Matrix[ [1, 2], [3, 4] ].real.should == Matrix[ [1, 2], [3, 4] ]
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Matrix[ [1.9, Complex(1,1)], [Complex(-0.42, 0), 4] ].real.should == Matrix[ [1.9, 1], [-0.42, 4] ]
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end
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it "returns empty matrices on the same size if empty" do
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Matrix.empty(0, 3).real.should == Matrix.empty(0, 3)
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Matrix.empty(3, 0).real.should == Matrix.empty(3, 0)
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end
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describe "for a subclass of Matrix" do
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it "returns an instance of that subclass" do
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MatrixSub.ins.real.should be_an_instance_of(MatrixSub)
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end
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end
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end
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