61 lines
2.3 KiB
Ruby
61 lines
2.3 KiB
Ruby
#
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# Copyright (C) 2012 Instructure, Inc.
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#
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# This file is part of Canvas.
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#
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# Canvas is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, version 3 of the License.
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#
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# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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require File.expand_path(File.dirname(__FILE__) + '/../spec_helper.rb')
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describe "PaginatedCollection" do
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describe ".build" do
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it "should return a #paginate proxy" do
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expect { PaginatedCollection.build() }.to raise_error(ArgumentError)
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proxy = PaginatedCollection.build { |pager| pager }
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proxy.should be_is_a PaginatedCollection::Proxy
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proxy.paginate(:per_page => 5).size.should == 0
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end
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end
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describe "#paginate" do
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it "should use the provided collection" do
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expect { PaginatedCollection.build { |pager| [] }.paginate(:per_page => 5) }.to raise_error(ArgumentError)
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items = PaginatedCollection.build { |pager| pager.replace([1,2]) }.paginate(:page => 1, :per_page => 5)
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items.should == [1,2]
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items.size.should == 2
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items.current_page.should == 1
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items.per_page.should == 5
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%w(next_page previous_page first_page last_page total_entries).each { |a| items.send(a).should be_nil }
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end
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it "should use the pager returned" do
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3.times { user_model }
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proxy = PaginatedCollection.build do |pager|
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result = User.active.paginate(:page => pager.current_page, :per_page => pager.per_page, :order => :id)
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result.map! { |u| u.id }
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end
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p1 = proxy.paginate(:page => 1, :per_page => 2)
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p1.current_page.should == 1
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p1.next_page.should == 2
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p1.previous_page.should be_nil
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p2 = proxy.paginate(:page => 2, :per_page => 2)
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p2.current_page.should == 2
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p2.next_page.should be_nil
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p2.previous_page.should == 1
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p1.should == User.active.order(:id).pluck(:id)[0,2]
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p2.should == User.active.order(:id).pluck(:id)[2,1]
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end
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end
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end
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