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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
52 lines
1.2 KiB
Ruby
52 lines
1.2 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.zero" do
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it "returns an object of type Matrix" do
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Matrix.zero(3).should be_kind_of(Matrix)
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end
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it "creates a n x n matrix" do
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m3 = Matrix.zero(3)
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m3.row_size.should == 3
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m3.column_size.should == 3
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m8 = Matrix.zero(8)
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m8.row_size.should == 8
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m8.column_size.should == 8
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end
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it "initializes all cells to 0" do
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size = 10
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m = Matrix.zero(size)
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(0...size).each do |i|
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(0...size).each do |j|
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m[i, j].should == 0
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end
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end
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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.zero(3).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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describe "Matrix.zero?" do
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it "returns true for empty matrices" do
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Matrix.empty.zero?.should == true
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Matrix.empty(3,0).zero?.should == true
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Matrix.empty(0,3).zero?.should == true
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end
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it "returns true for matrices with zero entries" do
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Matrix.zero(2,3).zero?.should == true
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end
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it "returns false for matrices with non zero entries" do
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Matrix[[1]].zero?.should == false
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end
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end
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