Fixtures
seller1 = FactoryGirl.create :seller, short_name: 'One'
seller2 = FactoryGirl.create :seller, short_name: 'Two'
cargo1 = FactoryGirl.create :cargo_type, name: 'CARGO ONE'
cargo2 = FactoryGirl.create :cargo_type, name: 'CARGO TWO'
FactoryGirl.create :order,
seller: seller1, cargo_type: cargo1
FactoryGirl.create :order,
seller: seller1, cargo_type: cargo2
FactoryGirl.create :order,
seller: seller2, cargo_type: cargo1
# ...