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author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-09-20 20:18:52 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-09-20 20:18:52 +0000 |
commit | 1d15d5f08032acf1b7bceacbb450d617ff6e0931 (patch) | |
tree | a3785a79899302bc149e4a6e72f624ac27dc1f10 /spec/ruby/library/matrix/build_spec.rb | |
parent | 75bfc6440d595bf339007f4fb280fd4d743e89c1 (diff) |
Move spec/rubyspec to spec/ruby for consistency
* 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
Diffstat (limited to 'spec/ruby/library/matrix/build_spec.rb')
-rw-r--r-- | spec/ruby/library/matrix/build_spec.rb | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/spec/ruby/library/matrix/build_spec.rb b/spec/ruby/library/matrix/build_spec.rb new file mode 100644 index 0000000000..29fd72206f --- /dev/null +++ b/spec/ruby/library/matrix/build_spec.rb @@ -0,0 +1,73 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) +require 'matrix' + +describe "Matrix.build" do + + it "returns a Matrix object of the given size" do + m = Matrix.build(3, 4){1} + m.should be_an_instance_of(Matrix) + m.row_size.should == 3 + m.column_size.should == 4 + end + + it "builds the Matrix using the given block" do + Matrix.build(2, 3){|col, row| 10*col - row}.should == + Matrix[[0, -1, -2], [10, 9, 8]] + end + + it "iterates through the first row, then the second, ..." do + acc = [] + Matrix.build(2, 3){|*args| acc << args} + acc.should == [[0, 0], [0, 1], [0, 2], [1, 0], [1, 1], [1, 2]] + end + + it "returns an Enumerator is no block is given" do + enum = Matrix.build(2, 1) + enum.should be_an_instance_of(Enumerator) + enum.each{1}.should == Matrix[[1], [1]] + end + + it "requires integers as parameters" do + lambda { Matrix.build("1", "2"){1} }.should raise_error(TypeError) + lambda { Matrix.build(nil, nil){1} }.should raise_error(TypeError) + lambda { Matrix.build(1..2){1} }.should raise_error(TypeError) + end + + it "requires non-negative integers" do + lambda { Matrix.build(-1, 1){1} }.should raise_error(ArgumentError) + lambda { Matrix.build(+1,-1){1} }.should raise_error(ArgumentError) + end + + it "returns empty Matrix if one argument is zero" do + m = Matrix.build(0, 3){ + raise "Should not yield" + } + m.should be_empty + m.column_size.should == 3 + + m = Matrix.build(3, 0){ + raise "Should not yield" + } + m.should be_empty + m.row_size.should == 3 + end + + it "tries to calls :to_int on arguments" do + int = mock('int') + int.should_receive(:to_int).twice.and_return(2) + Matrix.build(int, int){ 1 }.should == Matrix[ [1,1], [1,1] ] + end + + it "builds an nxn Matrix when given only one argument" do + m = Matrix.build(3){1} + m.row_size.should == 3 + m.column_size.should == 3 + end +end + +describe "for a subclass of Matrix" do + it "returns an instance of that subclass" do + MatrixSub.build(3){1}.should be_an_instance_of(MatrixSub) + end +end |