mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
1d15d5f080
* 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
68 lines
2.3 KiB
Ruby
68 lines
2.3 KiB
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
|
|
require File.expand_path('../fixtures/classes', __FILE__)
|
|
require 'matrix'
|
|
|
|
describe "Matrix#*" do
|
|
before :each do
|
|
@a = Matrix[ [1, 2], [3, 4] ]
|
|
@b = Matrix[ [4, 5], [6, 7] ]
|
|
end
|
|
|
|
it "returns the result of multiplying the corresponding elements of self and a Matrix" do
|
|
(@a * @b).should == Matrix[ [16,19], [36,43] ]
|
|
end
|
|
|
|
it "returns the result of multiplying the corresponding elements of self and a Vector" do
|
|
(@a * Vector[1,2]).should == Vector[5, 11]
|
|
end
|
|
|
|
it "returns the result of multiplying the elements of self and a Fixnum" do
|
|
(@a * 2).should == Matrix[ [2, 4], [6, 8] ]
|
|
end
|
|
|
|
it "returns the result of multiplying the elements of self and a Bignum" do
|
|
(@a * bignum_value).should == Matrix[
|
|
[9223372036854775808, 18446744073709551616],
|
|
[27670116110564327424, 36893488147419103232]
|
|
]
|
|
end
|
|
|
|
it "returns the result of multiplying the elements of self and a Float" do
|
|
(@a * 2.0).should == Matrix[ [2.0, 4.0], [6.0, 8.0] ]
|
|
end
|
|
|
|
it "raises a Matrix::ErrDimensionMismatch if the matrices are different sizes" do
|
|
lambda { @a * Matrix[ [1] ] }.should raise_error(Matrix::ErrDimensionMismatch)
|
|
end
|
|
|
|
it "returns a zero matrix if (nx0) * (0xn)" do
|
|
(Matrix[[],[],[]] * Matrix.columns([[],[],[]])).should == Matrix.zero(3)
|
|
end
|
|
|
|
it "returns an empty matrix if (0xn) * (nx0)" do
|
|
(Matrix.columns([[],[],[]]) * Matrix[[],[],[]]).should == Matrix[]
|
|
end
|
|
|
|
it "returns a mx0 matrix if (mxn) * (nx0)" do
|
|
(Matrix[[1,2],[3,4],[5,6]] * Matrix[[],[]]).should == Matrix[[],[],[]]
|
|
end
|
|
|
|
it "returns a 0xm matrix if (0xm) * (mxn)" do
|
|
(Matrix.columns([[], [], []]) * Matrix[[1,2],[3,4],[5,6]]).should == Matrix.columns([[],[]])
|
|
end
|
|
|
|
it "raises a TypeError if other is of wrong type" do
|
|
lambda { @a * nil }.should raise_error(TypeError)
|
|
lambda { @a * "a" }.should raise_error(TypeError)
|
|
lambda { @a * [ [1, 2] ] }.should raise_error(TypeError)
|
|
lambda { @a * Object.new }.should raise_error(TypeError)
|
|
end
|
|
|
|
describe "for a subclass of Matrix" do
|
|
it "returns an instance of that subclass" do
|
|
m = MatrixSub.ins
|
|
(m*m).should be_an_instance_of(MatrixSub)
|
|
(m*1).should be_an_instance_of(MatrixSub)
|
|
end
|
|
end
|
|
end
|