mirror of
https://github.com/ruby/ruby.git
synced 2025-08-26 22:45:03 +02:00
95e8c48dd3
* 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
38 lines
1,010 B
Ruby
38 lines
1,010 B
Ruby
require File.expand_path('../../fixtures/classes', __FILE__)
|
|
require 'matrix'
|
|
|
|
describe :inverse, shared: true do
|
|
|
|
it "returns a Matrix" do
|
|
Matrix[ [1,2], [2,1] ].send(@method).should be_an_instance_of(Matrix)
|
|
end
|
|
|
|
it "returns the inverse of the Matrix" do
|
|
Matrix[
|
|
[1, 3, 3], [1, 4, 3], [1, 3, 4]
|
|
].send(@method).should ==
|
|
Matrix[
|
|
[7, -3, -3], [-1, 1, 0], [-1, 0, 1]
|
|
]
|
|
end
|
|
|
|
it "returns the inverse of the Matrix (other case)" do
|
|
Matrix[
|
|
[1, 2, 3], [0, 1, 4], [5, 6, 0]
|
|
].send(@method).should be_close_to_matrix([
|
|
[-24, 18, 5], [20, -15, -4], [-5, 4, 1]
|
|
])
|
|
end
|
|
|
|
it "raises a ErrDimensionMismatch if the Matrix is not square" do
|
|
lambda{
|
|
Matrix[ [1,2,3], [1,2,3] ].send(@method)
|
|
}.should raise_error(Matrix::ErrDimensionMismatch)
|
|
end
|
|
|
|
describe "for a subclass of Matrix" do
|
|
it "returns an instance of that subclass" do
|
|
MatrixSub.ins.send(@method).should be_an_instance_of(MatrixSub)
|
|
end
|
|
end
|
|
end
|