```ruby
require 'spec_helper'
require 'systemu'

# FIXME this test might break the others if run before them
#
describe Impressionist do
  fixtures :articles,:impressions,:posts
  it "should delete existing migration and generate the migration file" do
    migrations_dir = "#{Rails.root}/db/migrate"
    impressions_migration = Dir.entries(migrations_dir).grep(/impressions/)[0]
    File.delete("#{migrations_dir}/#{impressions_migration}") unless impressions_migration.blank?
    generator_output = systemu("rails g impressionist")[1]
    migration_name = generator_output.split("migrate/")[1].strip
    Dir.entries(migrations_dir).include?(migration_name).should be_true
  end

  it "should run the migration created in the previous spec" do
    migrate_output = systemu("rake db:migrate RAILS_ENV=test")
    migrate_output[1].include?("CreateImpressionsTable: migrated").should be_true
  end
end
```

Mark failing tests as pending
user
```ruby
require 'spec_helper'
require 'systemu'

# FIXME this test might break the others if run before them
#
describe Impressionist do
  fixtures :articles,:impressions,:posts
  it "should delete existing migration and generate the migration file" do
    pending
    migrations_dir = "#{Rails.root}/db/migrate"
    impressions_migration = Dir.entries(migrations_dir).grep(/impressions/)[0]
    File.delete("#{migrations_dir}/#{impressions_migration}") unless impressions_migration.blank?
    generator_output = systemu("rails g impressionist")[1]
    migration_name = generator_output.split("migrate/")[1].strip
    Dir.entries(migrations_dir).include?(migration_name).should be_true
  end

  it "should run the migration created in the previous spec" do
    pending
    migrate_output = systemu("rake db:migrate RAILS_ENV=test")
    migrate_output[1].include?("CreateImpressionsTable: migrated").should be_true
  end
end
```
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