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55 lines
2.0 KiB
55 lines
2.0 KiB
7 years ago
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#-- copyright
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# OpenProject is a project management system.
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# Copyright (C) 2012-2017 the OpenProject Foundation (OPF)
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License version 3.
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#
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# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
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# Copyright (C) 2006-2017 Jean-Philippe Lang
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# Copyright (C) 2010-2013 the ChiliProject Team
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# See doc/COPYRIGHT.rdoc for more details.
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#++
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##
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# Using test-prof's before_all block to safely wrap shared data in a transaction,
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# shared_let acts similary to +let(:foo) { value }+ but initialized the value only once
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# Changes _within_ an example will be rolled back by database cleaner,
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# and the creation is rolled back in an after_all hook.
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#
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# Caveats: Set +reload: true+ if you plan to modify this value, otherwise Rails may still
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# have cached the local value. This will perform a database update, but is much faster
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# than creating new records (especially, work packages).
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def shared_let(key, reload: false, &block)
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var = "@#{key}"
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before_all do
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# Use instance_eval so following blocks may reference earlier ones
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result = instance_eval &block
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instance_variable_set(var, result)
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end
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let(key) do
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value = instance_variable_get(var)
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value.reload if reload
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value
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end
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end
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