75 lines
2.7 KiB
Ruby
75 lines
2.7 KiB
Ruby
require 'minitest/autorun'
|
|
require 'prism'
|
|
require 'tmpdir'
|
|
require 'fileutils'
|
|
|
|
class PaginationHelpersTest < Minitest::Test
|
|
def setup
|
|
@dir = Dir.mktmpdir('prism-pagination-helpers')
|
|
@store = Prism::Orm::Store.new(File.join(@dir, 'test.pstore'))
|
|
@store.create_table(:widgets, %w[id name position])
|
|
widget_class = Class.new(Prism::Orm::Model) { table_name :widgets }
|
|
widget_class.store = @store
|
|
Object.const_set(:PaginatedWidget, widget_class)
|
|
25.times { |i| PaginatedWidget.create!(name: "widget-#{i}", position: i) }
|
|
|
|
@context = Prism::Template::Context.new({})
|
|
end
|
|
|
|
def teardown
|
|
FileUtils.remove_entry(@dir)
|
|
Object.send(:remove_const, :PaginatedWidget) if Object.const_defined?(:PaginatedWidget)
|
|
end
|
|
|
|
def path_for
|
|
->(page) { "/widgets?page=#{page}" }
|
|
end
|
|
|
|
def test_returns_blank_when_everything_fits_on_one_page
|
|
relation = PaginatedWidget.page(1)
|
|
assert_equal '', @context.paginate(relation, path: path_for)
|
|
end
|
|
|
|
def test_renders_a_link_per_page_within_the_window
|
|
relation = PaginatedWidget.order(:position).page(1).per(5)
|
|
html = @context.paginate(relation, path: path_for)
|
|
assert_includes html, 'href="/widgets?page=2"'
|
|
assert_includes html, '>2<'
|
|
end
|
|
|
|
def test_current_page_link_carries_the_current_class
|
|
relation = PaginatedWidget.order(:position).page(3).per(5)
|
|
html = @context.paginate(relation, path: path_for)
|
|
assert_includes html, 'href="/widgets?page=3" class="page-link current"'
|
|
end
|
|
|
|
def test_first_page_disables_the_previous_link
|
|
relation = PaginatedWidget.order(:position).page(1).per(5)
|
|
html = @context.paginate(relation, path: path_for)
|
|
assert_includes html, '<span class="page-link disabled">Previous</span>'
|
|
end
|
|
|
|
def test_last_page_disables_the_next_link
|
|
relation = PaginatedWidget.order(:position).page(5).per(5)
|
|
html = @context.paginate(relation, path: path_for)
|
|
assert_includes html, '<span class="page-link disabled">Next</span>'
|
|
end
|
|
|
|
def test_far_apart_pages_are_separated_by_a_gap_marker
|
|
relation = PaginatedWidget.order(:position).page(1).per(1)
|
|
html = @context.paginate(relation, path: path_for)
|
|
assert_includes html, '<span class="page-gap">...</span>'
|
|
end
|
|
|
|
def test_renders_through_a_real_erb_template
|
|
views_dir = File.join(@dir, 'views', 'widgets')
|
|
FileUtils.mkdir_p(views_dir)
|
|
File.write(File.join(views_dir, 'index.erb'), '<%== paginate(widgets, path: ->(n) { "/widgets?page=#{n}" }) %>')
|
|
|
|
view = Prism::View.new(File.join(@dir, 'views'))
|
|
output = view.render('widgets/index', locals: { widgets: PaginatedWidget.order(:position).page(1).per(5) })
|
|
assert_includes output, '<nav class="pagination">'
|
|
assert_includes output, 'href="/widgets?page=2"'
|
|
end
|
|
end
|