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require 'cases/helper'
class HotCompatibilityTest < ActiveRecord::TestCase
self.use_transactional_fixtures = false
setup do
@klass = Class.new(ActiveRecord::Base) do
connection.create_table :hot_compatibilities do |t|
t.string :foo
t.string :bar
end
def self.name; 'HotCompatibility'; end
end
end
teardown do
@klass.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
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