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Project: RSpec Rails 2.3

Publisher: RSpec

transactional examples

When you run the rspec:install generator, the generated spec/spec_helper.rb
configures rspec-rails to hook into the transaction management in Rails'
testing framework, which wraps every example in a transaction and rolls it
back after each example.

RSpec.configure do |config|
  c.use_transactional_examples = true
end

This only works if you are using ActiveRecord as your ORM. If you are not, or
if you prefer to manage transactions differently, just delete that setting.

Scenarios
  1. run in transactions (default)
  2. run in transactions (explicit)
  3. disable transactions (explicit)
  4. run in transactions with fixture
run in transactions (default)
Given
a file named "spec/models/widget_spec.rb" with: 
require "spec_helper"

describe Widget do
  it "has none to begin with" do
    Widget.count.should == 0
  end

  it "has one after adding one" do
    Widget.create
    Widget.count.should == 1
  end

  it "has none after one was created in a previous example" do
    Widget.count.should == 0
  end
end
When
I run "rspec spec/models/widget_spec.rb"
Then
the output should contain "3 examples, 0 failures"
run in transactions (explicit)
Given
a file named "spec/models/widget_spec.rb" with: 
require "spec_helper"

RSpec.configure do |c|
  c.use_transactional_examples = true
end

describe Widget do
  it "has none to begin with" do
    Widget.count.should == 0
  end

  it "has one after adding one" do
    Widget.create
    Widget.count.should == 1
  end

  it "has none after one was created in a previous example" do
    Widget.count.should == 0
  end
end
When
I run "rspec spec/models/widget_spec.rb"
Then
the output should contain "3 examples, 0 failures"
disable transactions (explicit)
Given
a file named "spec/models/widget_spec.rb" with: 
require "spec_helper"

RSpec.configure do |c|
  c.use_transactional_examples = false
end

describe Widget do
  it "has none to begin with" do
    Widget.count.should == 0
  end

  it "has one after adding one" do
    Widget.create
    Widget.count.should == 1
  end

  it "has one after one was created in a previous example" do
    Widget.count.should == 1
  end

  after(:all) { Widget.destroy_all }
end
When
I run "rspec spec/models/widget_spec.rb"
Then
the output should contain "3 examples, 0 failures"
run in transactions with fixture
Given
a file named "spec/models/thing_spec.rb" with: 
require "spec_helper"

describe Thing do 
  fixtures :things
  it "fixture method defined" do
    things(:one)
  end
end
Given
a file named "spec/fixtures/things.yml" with: 
one:
  name: MyString
When
I run "rspec spec/models/thing_spec.rb"
Then
the output should contain "1 example, 0 failures"

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