Rails 3 + PostgreSQL + RSpec: App works fine but RSpec example fails - ruby-on-rails-3

Question

I am developing this Rails 3.2 application using the Apartment gem as middleware. The application itself works perfectly and all the RSpec examples also work perfectly when ran individually. However, when I run all the tests at the same time using the bundle exec rspec command, there are two examples that fail in two different controller specs and they do exactly the same thing. Here are the two examples in question:
In the issues_controller_spec.rb file:
describe "GET 'new'" do
# ...
context "for authenticated users" do
before(:each) do
controller.log_in(create(:user))
get :new
end
# ...
it "should create a new issue instance and put it in an instance variable" do
assigns(:issue).should be_an_instance_of Issue
end
end
end
In the users_controller_spec.rb file:
describe "GET 'new'" do
# ...
context "for authenticated users" do
# ...
context "for admin users" do
before(:each) do
admin = create(:admin)
admin.add_role :admin
controller.log_in(admin)
get :new
end
# ...
it "should create a new User instance and put it in an instance variable" do
assigns(:user).should be_an_instance_of User
end
end
end
end
These two examples are affected by a before hook:
before(:each) do
client = create(:client)
#request.host = "#{client.account_name}.lvh.me"
end
When creating a new Client, there is an after_create callback:
# Create the client database (Apartment) for multi-tenancy
def create_client_database
begin
Apartment::Database.create(self.account_name)
rescue Apartment::SchemaExists
return
rescue
self.destroy
end
end
And there is where the examples fail. Now if I remove the begin...rescue...end block and keep the line Apartment::Database.create(self.account_name) I get the following exception in the failling examples:
ActiveRecord::StatementInvalid:
PG::Error: ERROR: current transaction is aborted, commands ignored until end of transaction block
: SET search_path TO public
Again, if I run the examples individually, they pass but if I run all the examples, the two examples above fail.
Does anyone know what I am doing wrong please?
Note: The whole application code can be found here.

Answer 1

I solved this problem by wrapping the line client = create(:client) in a begin, rescue, end block like so:
before(:each) do
begin
client = create(:client)
rescue
client = Client.create!(attributes_for(:client))
end
#request.host = "#{client.account_name}.lvh.me"
end
I don't know how or why this works but I know it works.