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-rw-r--r--spec/rubyspec/library/matrix/upper_triangular_spec.rb24
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diff --git a/spec/rubyspec/library/matrix/upper_triangular_spec.rb b/spec/rubyspec/library/matrix/upper_triangular_spec.rb
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--- a/spec/rubyspec/library/matrix/upper_triangular_spec.rb
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-require File.expand_path('../../../spec_helper', __FILE__)
-require 'matrix'
-
-describe "Matrix.upper_triangular?" do
- it "returns true for an upper triangular Matrix" do
- Matrix[[1, 2, 3], [0, 2, 3], [0, 0, 3]].upper_triangular?.should be_true
- Matrix.diagonal([1, 2, 3]).upper_triangular?.should be_true
- Matrix[[1, 2], [0, 2], [0, 0], [0, 0]].upper_triangular?.should be_true
- Matrix[[1, 2, 3, 4], [0, 2, 3, 4]].upper_triangular?.should be_true
- end
-
- it "returns false for a non upper triangular square Matrix" do
- Matrix[[0, 0], [1, 0]].upper_triangular?.should be_false
- Matrix[[1, 2, 3], [1, 2, 3], [1, 2, 3]].upper_triangular?.should be_false
- Matrix[[0, 0], [0, 0], [0, 0], [0, 1]].upper_triangular?.should be_false
- Matrix[[0, 0, 0, 0], [1, 0, 0, 0]].upper_triangular?.should be_false
- end
-
- it "returns true for an empty matrix" do
- Matrix.empty(3,0).upper_triangular?.should be_true
- Matrix.empty(0,3).upper_triangular?.should be_true
- Matrix.empty(0,0).upper_triangular?.should be_true
- end
-end