diff options
Diffstat (limited to 'spec/rubyspec/library/matrix/lup_decomposition')
7 files changed, 0 insertions, 174 deletions
diff --git a/spec/rubyspec/library/matrix/lup_decomposition/determinant_spec.rb b/spec/rubyspec/library/matrix/lup_decomposition/determinant_spec.rb deleted file mode 100644 index f73c65ba8f..0000000000 --- a/spec/rubyspec/library/matrix/lup_decomposition/determinant_spec.rb +++ /dev/null @@ -1,21 +0,0 @@ -require File.expand_path('../../../../spec_helper', __FILE__) -require 'matrix' - -describe "Matrix::LUPDecomposition#determinant" do - it "returns the determinant when the matrix is square" do - a = Matrix[[7, 8, 9], [14, 46, 51], [28, 82, 163]] - a.lup.determinant.should == 15120 # == a.determinant - end - - it "raises an error for rectangular matrices" do - [ - Matrix[[7, 8, 9], [14, 46, 51]], - Matrix[[7, 8], [14, 46], [28, 82]], - ].each do |m| - lup = m.lup - lambda { - lup.determinant - }.should raise_error(Matrix::ErrDimensionMismatch) - end - end -end diff --git a/spec/rubyspec/library/matrix/lup_decomposition/initialize_spec.rb b/spec/rubyspec/library/matrix/lup_decomposition/initialize_spec.rb deleted file mode 100644 index 953389083f..0000000000 --- a/spec/rubyspec/library/matrix/lup_decomposition/initialize_spec.rb +++ /dev/null @@ -1,13 +0,0 @@ -require File.expand_path('../../../../spec_helper', __FILE__) -require 'matrix' - -describe "Matrix::LUPDecomposition#initialize" do - it "raises an error if argument is not a matrix" do - lambda { - Matrix::LUPDecomposition.new([[]]) - }.should raise_error(TypeError) - lambda { - Matrix::LUPDecomposition.new(42) - }.should raise_error(TypeError) - end -end diff --git a/spec/rubyspec/library/matrix/lup_decomposition/l_spec.rb b/spec/rubyspec/library/matrix/lup_decomposition/l_spec.rb deleted file mode 100644 index c50b5f712e..0000000000 --- a/spec/rubyspec/library/matrix/lup_decomposition/l_spec.rb +++ /dev/null @@ -1,18 +0,0 @@ -require File.expand_path('../../../../spec_helper', __FILE__) -require 'matrix' - -describe "Matrix::LUPDecomposition#l" do - before :each do - @a = Matrix[[7, 8, 9], [14, 46, 51], [28, 82, 163]] - @lu = Matrix::LUPDecomposition.new(@a) - @l = @lu.l - end - - it "returns the first element of to_a" do - @l.should == @lu.to_a[0] - end - - it "returns a lower triangular matrix" do - @l.lower_triangular?.should be_true - end -end diff --git a/spec/rubyspec/library/matrix/lup_decomposition/p_spec.rb b/spec/rubyspec/library/matrix/lup_decomposition/p_spec.rb deleted file mode 100644 index 837b65a915..0000000000 --- a/spec/rubyspec/library/matrix/lup_decomposition/p_spec.rb +++ /dev/null @@ -1,18 +0,0 @@ -require File.expand_path('../../../../spec_helper', __FILE__) -require 'matrix' - -describe "Matrix::LUPDecomposition#p" do - before :each do - @a = Matrix[[7, 8, 9], [14, 46, 51], [28, 82, 163]] - @lu = Matrix::LUPDecomposition.new(@a) - @p = @lu.p - end - - it "returns the third element of to_a" do - @p.should == @lu.to_a[2] - end - - it "returns a permutation matrix" do - @p.permutation?.should be_true - end -end diff --git a/spec/rubyspec/library/matrix/lup_decomposition/solve_spec.rb b/spec/rubyspec/library/matrix/lup_decomposition/solve_spec.rb deleted file mode 100644 index c4ef42bcea..0000000000 --- a/spec/rubyspec/library/matrix/lup_decomposition/solve_spec.rb +++ /dev/null @@ -1,53 +0,0 @@ -require File.expand_path('../../../../spec_helper', __FILE__) -require 'matrix' - -describe "Matrix::LUPDecomposition#solve" do - describe "for rectangular matrices" do - it "raises an error for singular matrices" do - a = Matrix[[1, 2, 3], [1, 3, 5], [2, 5, 8]] - lu = Matrix::LUPDecomposition.new(a) - lambda { - lu.solve(a) - }.should raise_error(Matrix::ErrNotRegular) - end - - describe "for non singular matrices" do - before :each do - @a = Matrix[[7, 8, 9], [14, 46, 51], [28, 82, 163]] - @lu = Matrix::LUPDecomposition.new(@a) - end - - it "returns the appropriate empty matrix when given an empty matrix" do - @lu.solve(Matrix.empty(3,0)).should == Matrix.empty(3,0) - empty = Matrix::LUPDecomposition.new(Matrix.empty(0, 0)) - empty.solve(Matrix.empty(0,3)).should == Matrix.empty(0,3) - end - - it "returns the right matrix when given a matrix of the appropriate size" do - solution = Matrix[[1, 2, 3, 4], [0, 1, 2, 3], [-1, -2, -3, -4]] - values = Matrix[[-2, 4, 10, 16], [-37, -28, -19, -10], [-135, -188, -241, -294]] # == @a * solution - @lu.solve(values).should == solution - end - - it "raises an error when given a matrix of the wrong size" do - values = Matrix[[1, 2, 3, 4], [0, 1, 2, 3]] - lambda { - @lu.solve(values) - }.should raise_error(Matrix::ErrDimensionMismatch) - end - - it "returns the right vector when given a vector of the appropriate size" do - solution = Vector[1, 2, -1] - values = Vector[14, 55, 29] # == @a * solution - @lu.solve(values).should == solution - end - - it "raises an error when given a vector of the wrong size" do - values = Vector[14, 55] - lambda { - @lu.solve(values) - }.should raise_error(Matrix::ErrDimensionMismatch) - end - end - end -end diff --git a/spec/rubyspec/library/matrix/lup_decomposition/to_a_spec.rb b/spec/rubyspec/library/matrix/lup_decomposition/to_a_spec.rb deleted file mode 100644 index 20be26eb9c..0000000000 --- a/spec/rubyspec/library/matrix/lup_decomposition/to_a_spec.rb +++ /dev/null @@ -1,33 +0,0 @@ -require File.expand_path('../../../../spec_helper', __FILE__) -require 'matrix' - -describe "Matrix::LUPDecomposition#to_a" do - before :each do - @a = Matrix[[7, 8, 9], [14, 46, 51], [28, 82, 163]] - @lu = Matrix::LUPDecomposition.new(@a) - @to_a = @lu.to_a - @l, @u, @p = @to_a - end - - it "returns an array of three matrices" do - @to_a.should be_kind_of(Array) - @to_a.length.should == 3 - @to_a.each{|m| m.should be_kind_of(Matrix)} - end - - it "returns [l, u, p] such that l*u == a*p" do - (@l * @u).should == (@p * @a) - end - - it "returns the right values for rectangular matrices" do - [ - Matrix[[7, 8, 9], [14, 46, 51]], - Matrix[[4, 11], [5, 8], [3, 4]], - ].each do |a| - l, u, p = Matrix::LUPDecomposition.new(a).to_a - (l * u).should == (p * a) - end - end - - it "has other properties implied by the specs of #l, #u and #p" -end diff --git a/spec/rubyspec/library/matrix/lup_decomposition/u_spec.rb b/spec/rubyspec/library/matrix/lup_decomposition/u_spec.rb deleted file mode 100644 index 97e8580c58..0000000000 --- a/spec/rubyspec/library/matrix/lup_decomposition/u_spec.rb +++ /dev/null @@ -1,18 +0,0 @@ -require File.expand_path('../../../../spec_helper', __FILE__) -require 'matrix' - -describe "Matrix::LUPDecomposition#u" do - before :each do - @a = Matrix[[7, 8, 9], [14, 46, 51], [28, 82, 163]] - @lu = Matrix::LUPDecomposition.new(@a) - @u = @lu.u - end - - it "returns the second element of to_a" do - @u.should == @lu.to_a[1] - end - - it "returns an upper triangular matrix" do - @u.upper_triangular?.should be_true - end -end |