Skip to content

Use rspec's subject #1

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
joshuaclayton wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Use rspec's subject #1

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
26 changes: 11 additions & 15 deletions spec/stack_spec.rb
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,39 +1,35 @@
require 'stack'

describe Stack do
let(:stack) { Stack.new }

context 'by default' do
it 'starts out empty' do
stack.empty?.should be_true
subject.should be_empty
end
end

context 'pushing elements' do
it 'can be pushed an element' do
stack.should be_empty
stack.push(1)
stack.size.should == 1
subject.push(1)
subject.size.should == 1
end

it 'can be pushed many elements at once' do
stack.should be_empty
stack.push(1, 2, 3, 4, 5)
stack.size.should == 5
subject.push(1, 2, 3, 4, 5)
subject.size.should == 5
end
end

context 'popping elements' do
it 'allows you to pop the last pushed element' do
stack.push(:foo, :bar)
stack.pop.should == :bar
stack.pop.should == :foo
stack.should be_empty
subject.push(:foo, :bar)
subject.pop.should == :bar
subject.pop.should == :foo
subject.should be_empty
end

it 'raises when popping an empty stack' do
stack.should be_empty
expect { stack.pop }.to raise_error(Stack::EmptyStackError)
subject.should be_empty
expect { subject.pop }.to raise_error(Stack::EmptyStackError)
end
end
end