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rails--rails/activerecord/test/cases/hot_compatibility_test.rb
Brandon Weiss 0965863564 Closes rails/rails#18864: Renaming transactional fixtures to transactional tests
I’m renaming all instances of `use_transcational_fixtures` to
`use_transactional_tests` and “transactional fixtures” to
“transactional tests”.

I’m deprecating `use_transactional_fixtures=`. So anyone who is
explicitly setting this will get a warning telling them to use
`use_transactional_tests=` instead.

I’m maintaining backwards compatibility—both forms will work.
`use_transactional_tests` will check to see if
`use_transactional_fixtures` is set and use that, otherwise it will use
itself. But because `use_transactional_tests` is a class attribute
(created with `class_attribute`) this requires a little bit of hoop
jumping. The writer method that `class_attribute` generates defines a
new reader method that return the value being set. Which means we can’t
set the default of `true` using `use_transactional_tests=` as was done
previously because that won’t take into account anyone using
`use_transactional_fixtures`. Instead I defined the reader method
manually and it checks `use_transactional_fixtures`. If it was set then
it should be used, otherwise it should return the default, which is
`true`. If someone uses `use_transactional_tests=` then it will
overwrite the backwards-compatible method with whatever they set.
2015-03-16 11:35:44 -07:00

54 lines
1.3 KiB
Ruby

require 'cases/helper'
class HotCompatibilityTest < ActiveRecord::TestCase
self.use_transactional_tests = false
setup do
@klass = Class.new(ActiveRecord::Base) do
connection.create_table :hot_compatibilities, force: true do |t|
t.string :foo
t.string :bar
end
def self.name; 'HotCompatibility'; end
end
end
teardown do
ActiveRecord::Base.connection.drop_table :hot_compatibilities
end
test "insert after remove_column" do
# warm cache
@klass.create!
# we have 3 columns
assert_equal 3, @klass.columns.length
# remove one of them
@klass.connection.remove_column :hot_compatibilities, :bar
# we still have 3 columns in the cache
assert_equal 3, @klass.columns.length
# but we can successfully create a record so long as we don't
# reference the removed column
record = @klass.create! foo: 'foo'
record.reload
assert_equal 'foo', record.foo
end
test "update after remove_column" do
record = @klass.create! foo: 'foo'
assert_equal 3, @klass.columns.length
@klass.connection.remove_column :hot_compatibilities, :bar
assert_equal 3, @klass.columns.length
record.reload
assert_equal 'foo', record.foo
record.foo = 'bar'
record.save!
record.reload
assert_equal 'bar', record.foo
end
end