In RSpec, what's the difference between before(:suite) and before(:all)?

When a before(:all) is defined in the RSpec.configure block it is called before each top level example group, while a before(:suite) code block is only called once.

Here's an example:

RSpec.configure do |config|
  config.before(:all) { puts 'Before :all' }
  config.after(:all) { puts 'After :all' }
  config.before(:suite) { puts 'Before :suite' }
  config.after(:suite) { puts 'After :suite' }
end

describe 'spec1' do
  example 'spec1' do
    puts 'spec1'
  end
end

describe 'spec2' do
  example 'spec2' do
    puts 'spec2'
  end
end

Output:

Before :suite
Before :all
spec1
After :all
Before :all
spec2
After :all
After :suite