diff options
Diffstat (limited to 'spec/rubyspec/library/matrix/divide_spec.rb')
-rw-r--r-- | spec/rubyspec/library/matrix/divide_spec.rb | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/spec/rubyspec/library/matrix/divide_spec.rb b/spec/rubyspec/library/matrix/divide_spec.rb new file mode 100644 index 0000000000..b602d7d10f --- /dev/null +++ b/spec/rubyspec/library/matrix/divide_spec.rb @@ -0,0 +1,55 @@ +require File.expand_path('../../../spec_helper', __FILE__) +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] ] + @c = Matrix[ [1.2, 2.4], [3.6, 4.8] ] + end + + it "returns the result of dividing self by another Matrix" do + (@a / @b).should be_close_to_matrix([[2.5, -1.5], [1.5, -0.5]]) + end + + conflicts_with :Prime do + it "returns the result of dividing self by a Fixnum" do + (@a / 2).should == Matrix[ [0, 1], [1, 2] ] + end + end + + conflicts_with :Prime do + it "returns the result of dividing self by a Bignum" do + (@a / bignum_value).should == Matrix[ [0, 0], [0, 0] ] + end + end + + it "returns the result of dividing self by a Float" do + (@c / 1.2).should == Matrix[ [1, 2], [3, 4] ] + 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 an instance of Matrix" do + (@a / @b).should be_kind_of(Matrix) + 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 + + 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 +end |