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Diffstat (limited to 'spec/ruby/core/enumerable/none_spec.rb')
-rw-r--r-- | spec/ruby/core/enumerable/none_spec.rb | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/spec/ruby/core/enumerable/none_spec.rb b/spec/ruby/core/enumerable/none_spec.rb new file mode 100644 index 0000000000..0646c13b34 --- /dev/null +++ b/spec/ruby/core/enumerable/none_spec.rb @@ -0,0 +1,57 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Enumerable#none?" do + it "returns true if none of the elements in self are true" do + e = EnumerableSpecs::Numerous.new(false, nil, false) + e.none?.should be_true + end + + it "returns false if at least one of the elements in self are true" do + e = EnumerableSpecs::Numerous.new(false, nil, true, false) + e.none?.should be_false + end + + it "gathers whole arrays as elements when each yields multiple" do + multi = EnumerableSpecs::YieldsMultiWithFalse.new + multi.none?.should be_false + end +end + +describe "Enumerable#none? with a block" do + before :each do + @e = EnumerableSpecs::Numerous.new(1,1,2,3,4) + end + + it "passes each element to the block in turn until it returns true" do + acc = [] + @e.none? {|e| acc << e; false } + acc.should == [1,1,2,3,4] + end + + it "stops passing elements to the block when it returns true" do + acc = [] + @e.none? {|e| acc << e; e == 3 ? true : false } + acc.should == [1,1,2,3] + end + + it "returns true if the block never returns true" do + @e.none? {|e| false }.should be_true + end + + it "returns false if the block ever returns true" do + @e.none? {|e| e == 3 ? true : false }.should be_false + end + + it "gathers initial args as elements when each yields multiple" do + multi = EnumerableSpecs::YieldsMulti.new + multi.none? {|e| e == [1, 2] }.should be_true + end + + it "yields multiple arguments when each yields multiple" do + multi = EnumerableSpecs::YieldsMulti.new + yielded = [] + multi.none? {|e, i| yielded << [e, i] } + yielded.should == [[1, 2]] + end +end |