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Diffstat (limited to 'spec/ruby/library/matrix/plus_spec.rb')
-rw-r--r-- | spec/ruby/library/matrix/plus_spec.rb | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/spec/ruby/library/matrix/plus_spec.rb b/spec/ruby/library/matrix/plus_spec.rb new file mode 100644 index 0000000000..59addfdf62 --- /dev/null +++ b/spec/ruby/library/matrix/plus_spec.rb @@ -0,0 +1,42 @@ +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 adding the corresponding elements of self and other" do + (@a + @b).should == Matrix[ [5,7], [9,11] ] + end + + it "returns an instance of Matrix" do + (@a + @b).should be_kind_of(Matrix) + end + + it "raises a Matrix::ErrDimensionMismatch if the matrices are different sizes" do + lambda { @a + Matrix[ [1] ] }.should raise_error(Matrix::ErrDimensionMismatch) + end + + it "raises a ExceptionForMatrix::ErrOperationNotDefined if other is a Numeric Type" do + lambda { @a + 2 }.should raise_error(ExceptionForMatrix::ErrOperationNotDefined) + lambda { @a + 1.2 }.should raise_error(ExceptionForMatrix::ErrOperationNotDefined) + lambda { @a + bignum_value }.should raise_error(ExceptionForMatrix::ErrOperationNotDefined) + 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) + end + end +end |