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Filename : mutable_spec.rb
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# frozen_string_literal: true

#
# Copyright (C) 2015 - present Instructure, Inc.
#
# This file is part of Canvas.
#
# Canvas is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the Free
# Software Foundation, version 3 of the License.
#
# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You should have received a copy of the GNU Affero General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
#

describe Mutable do
  before do
    @klass = Class.new do
      # the signature that Mutable requires. if we care about side
      # effects/return values from these methods for specific tests, we'll double
      # them
      def muted?; end

      def update_attribute(*); end

      def save!; end

      include Mutable
    end

    @mutable = @klass.new
  end

  describe "mute!" do
    it "updates if not yet muted" do
      expect(@mutable).to receive(:muted?).and_return(false)
      expect(@mutable).to receive(:update_attribute).once.with(:muted, true)
      @mutable.mute!
    end

    it "skips update if already muted" do
      expect(@mutable).to receive(:muted?).and_return(true)
      expect(@mutable).not_to receive(:update_attribute)
      @mutable.mute!
    end
  end

  describe "unmute!" do
    it "updates if currently muted" do
      expect(@mutable).to receive(:muted?).and_return(true)
      expect(@mutable).to receive(:update_attribute).once.with(:muted, false)
      @mutable.unmute!
    end

    it "skips update if not muted" do
      expect(@mutable).to receive(:muted?).and_return(false)
      expect(@mutable).not_to receive(:update_attribute)
      @mutable.unmute!
    end
  end
end