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Versions: 109
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Stored size: 1.35 KB
Contents
require File.dirname(__FILE__) + '/spec_helper'
require File.dirname(__FILE__) + '/stack'
require File.dirname(__FILE__) + '/shared_stack_examples'
describe Stack do
before(:each) do
@stack = Stack.new
end
describe "(empty)" do
it { @stack.should be_empty }
it_should_behave_like "non-full Stack"
it "should complain when sent #peek" do
lambda { @stack.peek }.should raise_error(StackUnderflowError)
end
it "should complain when sent #pop" do
lambda { @stack.pop }.should raise_error(StackUnderflowError)
end
end
describe "(with one item)" do
before(:each) do
@stack.push 3
@last_item_added = 3
end
it_should_behave_like "non-empty Stack"
it_should_behave_like "non-full Stack"
end
describe "(with one item less than capacity)" do
before(:each) do
(1..9).each { |i| @stack.push i }
@last_item_added = 9
end
it_should_behave_like "non-empty Stack"
it_should_behave_like "non-full Stack"
end
describe "(full)" do
before(:each) do
(1..10).each { |i| @stack.push i }
@last_item_added = 10
end
it { @stack.should be_full }
it_should_behave_like "non-empty Stack"
it "should complain on #push" do
lambda { @stack.push Object.new }.should raise_error(StackOverflowError)
end
end
end
Version data entries
109 entries across 109 versions & 12 rubygems