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Diffstat (limited to 'spec/ruby/core/array/drop_spec.rb')
-rw-r--r-- | spec/ruby/core/array/drop_spec.rb | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/spec/ruby/core/array/drop_spec.rb b/spec/ruby/core/array/drop_spec.rb new file mode 100644 index 0000000000..763b45e05a --- /dev/null +++ b/spec/ruby/core/array/drop_spec.rb @@ -0,0 +1,33 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Array#drop" do + it "removes the specified number of elements from the start of the array" do + [1, 2, 3, 4, 5].drop(2).should == [3, 4, 5] + end + + it "raises an ArgumentError if the number of elements specified is negative" do + lambda { [1, 2].drop(-3) }.should raise_error(ArgumentError) + end + + it "returns an empty Array if all elements are dropped" do + [1, 2].drop(2).should == [] + end + + it "returns an empty Array when called on an empty Array" do + [].drop(0).should == [] + end + + it "does not remove any elements when passed zero" do + [1, 2].drop(0).should == [1, 2] + end + + it "returns an empty Array if more elements than exist are dropped" do + [1, 2].drop(3).should == [] + end + + it 'acts correctly after a shift' do + ary = [nil, 1, 2] + ary.shift + ary.drop(1).should == [2] + end +end |