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require 'generators/generators_test_helper'
require 'rails/generators/rails/migration/migration_generator'
class MigrationGeneratorTest < Rails::Generators::TestCase
include GeneratorsTestHelper
def test_migration
migration = "change_title_body_from_posts"
run_generator [migration]
assert_migration "db/migrate/#{migration}.rb", /class ChangeTitleBodyFromPosts < ActiveRecord::Migration/
end
def test_migrations_generated_simultaneously
migrations = ["change_title_body_from_posts", "change_email_from_comments"]
first_migration_number, second_migration_number = migrations.collect do |migration|
run_generator [migration]
file_name = migration_file_name "db/migrate/#{migration}.rb"
File.basename(file_name).split('_').first
end
assert_not_equal first_migration_number, second_migration_number
end
def test_migration_with_class_name
migration = "ChangeTitleBodyFromPosts"
run_generator [migration]
assert_migration "db/migrate/change_title_body_from_posts.rb", /class #{migration} < ActiveRecord::Migration/
end
def test_add_migration_with_attributes
migration = "add_title_body_to_posts"
run_generator [migration, "title:string", "body:text"]
assert_migration "db/migrate/#{migration}.rb" do |content|
assert_class_method :up, content do |up|
assert_match /add_column :posts, :title, :string/, up
assert_match /add_column :posts, :body, :text/, up
end
assert_class_method :down, content do |down|
assert_match /remove_column :posts, :title/, down
assert_match /remove_column :posts, :body/, down
end
end
end
def test_remove_migration_with_attributes
migration = "remove_title_body_from_posts"
run_generator [migration, "title:string", "body:text"]
assert_migration "db/migrate/#{migration}.rb" do |content|
assert_class_method :up, content do |up|
assert_match /remove_column :posts, :title/, up
assert_match /remove_column :posts, :body/, up
end
assert_class_method :down, content do |down|
assert_match /add_column :posts, :title, :string/, down
assert_match /add_column :posts, :body, :text/, down
end
end
end
def test_should_create_empty_migrations_if_name_not_start_with_add_or_remove
migration = "create_books"
run_generator [migration, "title:string", "content:text"]
assert_migration "db/migrate/#{migration}.rb" do |content|
assert_class_method :up, content do |up|
assert_match /^\s*$/, up
end
assert_class_method :down, content do |down|
assert_match /^\s*$/, down
end
end
end
end
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