diff options
Diffstat (limited to 'spec/ruby/core/queue/initialize_spec.rb')
-rw-r--r-- | spec/ruby/core/queue/initialize_spec.rb | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/spec/ruby/core/queue/initialize_spec.rb b/spec/ruby/core/queue/initialize_spec.rb new file mode 100644 index 0000000000..5cecfe51a5 --- /dev/null +++ b/spec/ruby/core/queue/initialize_spec.rb @@ -0,0 +1,44 @@ +require_relative '../../spec_helper' + +describe "Queue#initialize" do + it "can be passed no arguments for an empty Queue" do + q = Queue.new + q.size.should == 0 + q.should.empty? + end + + ruby_version_is '3.1' do + it "adds all elements of the passed Enumerable to self" do + q = Queue.new([1, 2, 3]) + q.size.should == 3 + q.should_not.empty? + q.pop.should == 1 + q.pop.should == 2 + q.pop.should == 3 + q.should.empty? + end + + it "uses #to_ary on the provided Enumerable" do + enumerable = MockObject.new('mock-enumerable') + enumerable.should_receive(:to_ary).and_return([1, 2, 3]) + q = Queue.new(enumerable) + q.size.should == 3 + q.should_not.empty? + q.pop.should == 1 + q.pop.should == 2 + q.pop.should == 3 + q.should.empty? + end + + it "raises if the provided Enumerable does not respond to #to_ary" do + enumerable = MockObject.new('mock-enumerable') + -> { Queue.new(enumerable) }.should raise_error(TypeError, "no implicit conversion of MockObject into Array") + end + + it "raises if the provided Enumerable #to_ary does not return an Array" do + enumerable = MockObject.new('mock-enumerable') + enumerable.should_receive(:to_ary).and_return(14) + -> { Queue.new(enumerable) }.should raise_error(TypeError, "can't convert MockObject to Array (MockObject#to_ary gives Integer)") + end + end +end |