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require 'spec_helper'
require 'will_paginate/view_helpers/link_renderer_base'
require 'will_paginate/collection'
describe WillPaginate::ViewHelpers::LinkRendererBase do
before do
@renderer = described_class.new
end
it "should raise error when unprepared" do
lambda {
@renderer.pagination
}.should raise_error
end
it "should prepare with collection and options" do
prepare({})
@renderer.send(:current_page).should == 1
end
it "should have total_pages accessor" do
prepare :total_pages => 42
@renderer.send(:total_pages).should == 42
end
it "should clear old cached values when prepared" do
prepare(:total_pages => 1)
@renderer.send(:total_pages).should == 1
# prepare with different object:
prepare(:total_pages => 2)
@renderer.send(:total_pages).should == 2
end
it "should have pagination definition" do
prepare({ :total_pages => 1 }, :page_links => true)
@renderer.pagination.should == [:previous_page, 1, :next_page]
end
describe "visible page numbers" do
it "should calculate windowed visible links" do
prepare({ :page => 6, :total_pages => 11 }, :inner_window => 1, :outer_window => 1)
showing_pages 1, 2, :gap, 5, 6, 7, :gap, 10, 11
end
it "should eliminate small gaps" do
prepare({ :page => 6, :total_pages => 11 }, :inner_window => 2, :outer_window => 1)
# pages 4 and 8 appear instead of the gap
showing_pages 1..11
end
it "should support having no windows at all" do
prepare({ :page => 4, :total_pages => 7 }, :inner_window => 0, :outer_window => 0)
showing_pages 1, :gap, 4, :gap, 7
end
it "should adjust upper limit if lower is out of bounds" do
prepare({ :page => 1, :total_pages => 10 }, :inner_window => 2, :outer_window => 1)
showing_pages 1, 2, 3, 4, 5, :gap, 9, 10
end
it "should adjust lower limit if upper is out of bounds" do
prepare({ :page => 10, :total_pages => 10 }, :inner_window => 2, :outer_window => 1)
showing_pages 1, 2, :gap, 6, 7, 8, 9, 10
end
def showing_pages(*pages)
pages = pages.first.to_a if Array === pages.first or Range === pages.first
@renderer.send(:windowed_page_numbers).should == pages
end
end
protected
def collection(params = {})
if params[:total_pages]
params[:per_page] = 1
params[:total_entries] = params[:total_pages]
end
WillPaginate::Collection.new(params[:page] || 1, params[:per_page] || 30, params[:total_entries])
end
def prepare(collection_options, options = {})
@renderer.prepare(collection(collection_options), options)
end
end
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