Initial commit of foodsoft 2

vendor/plugins/will_paginate/test/collection_test.rb

@@ -0,0 +1,140 @@
+require 'helper'
+require 'will_paginate/array'
+
+class ArrayPaginationTest < Test::Unit::TestCase
+  def test_simple
+    collection = ('a'..'e').to_a
+    
+    [{ :page => 1,  :per_page => 3,  :expected => %w( a b c ) },
+     { :page => 2,  :per_page => 3,  :expected => %w( d e ) },
+     { :page => 1,  :per_page => 5,  :expected => %w( a b c d e ) },
+     { :page => 3,  :per_page => 5,  :expected => [] },
+    ].
+    each do |conditions|
+      expected = conditions.delete :expected
+      assert_equal expected, collection.paginate(conditions)
+    end
+  end
+
+  def test_defaults
+    result = (1..50).to_a.paginate
+    assert_equal 1, result.current_page
+    assert_equal 30, result.size
+  end
+
+  def test_deprecated_api
+    assert_raise(ArgumentError) { [].paginate(2) }
+    assert_raise(ArgumentError) { [].paginate(2, 10) }
+  end
+
+  def test_total_entries_has_precedence
+    result = %w(a b c).paginate :total_entries => 5
+    assert_equal 5, result.total_entries
+  end
+
+  def test_argument_error_with_params_and_another_argument
+    assert_raise ArgumentError do
+      [].paginate({}, 5)
+    end
+  end
+
+  def test_paginated_collection
+    entries = %w(a b c)
+    collection = create(2, 3, 10) do |pager|
+      assert_equal entries, pager.replace(entries)
+    end
+
+    assert_equal entries, collection
+    assert_respond_to_all collection, %w(total_pages each offset size current_page per_page total_entries)
+    assert_kind_of Array, collection
+    assert_instance_of Array, collection.entries
+    assert_equal 3, collection.offset
+    assert_equal 4, collection.total_pages
+    assert !collection.out_of_bounds?
+  end
+
+  def test_previous_next_pages
+    collection = create(1, 1, 3)
+    assert_nil collection.previous_page
+    assert_equal 2, collection.next_page
+    
+    collection = create(2, 1, 3)
+    assert_equal 1, collection.previous_page
+    assert_equal 3, collection.next_page
+    
+    collection = create(3, 1, 3)
+    assert_equal 2, collection.previous_page
+    assert_nil collection.next_page
+  end
+
+  def test_out_of_bounds
+    entries = create(2, 3, 2){}
+    assert entries.out_of_bounds?
+    
+    entries = create(1, 3, 2){}
+    assert !entries.out_of_bounds?
+  end
+
+  def test_guessing_total_count
+    entries = create do |pager|
+      # collection is shorter than limit
+      pager.replace array
+    end
+    assert_equal 8, entries.total_entries
+    
+    entries = create(2, 5, 10) do |pager|
+      # collection is shorter than limit, but we have an explicit count
+      pager.replace array
+    end
+    assert_equal 10, entries.total_entries
+    
+    entries = create do |pager|
+      # collection is the same as limit; we can't guess
+      pager.replace array(5)
+    end
+    assert_equal nil, entries.total_entries
+    
+    entries = create do |pager|
+      # collection is empty; we can't guess
+      pager.replace array(0)
+    end
+    assert_equal nil, entries.total_entries
+    
+    entries = create(1) do |pager|
+      # collection is empty and we're on page 1,
+      # so the whole thing must be empty, too
+      pager.replace array(0)
+    end
+    assert_equal 0, entries.total_entries
+  end
+
+  def test_invalid_page
+    bad_inputs = [0, -1, nil, '', 'Schnitzel']
+
+    bad_inputs.each do |bad|
+      assert_raise(WillPaginate::InvalidPage) { create bad }
+    end
+  end
+
+  def test_invalid_per_page_setting
+    assert_raise(ArgumentError) { create(1, -1) }
+  end
+
+  def test_page_count_was_removed
+    assert_raise(NoMethodError) { create.page_count }
+    # It's `total_pages` now.
+  end
+
+  private
+    def create(page = 2, limit = 5, total = nil, &block)
+      if block_given?
+        WillPaginate::Collection.create(page, limit, total, &block)
+      else
+        WillPaginate::Collection.new(page, limit, total)
+      end
+    end
+
+    def array(size = 3)
+      Array.new(size)
+    end
+end