Add some tests for Countless extra

[refs #108]

docs/extras/countless.md

@@ -25,6 +25,8 @@ In a controller:
 @pagy, @records  = pagy_countless(some_scope, ...)
 ```
 
+**Notice**: When using `ActiveRecord`, the `@records` is an `Array`. Onthe other side, the normal `Pagy` returns an `ActiveRelation`.
+
 ## Files
 
 This extra is composed of 1 file:

test/pagy/extras/countless_test.rb

@@ -0,0 +1,88 @@
+require 'byebug'
+require_relative '../../test_helper'
+require 'pagy/extras/countless'
+
+SingleCov.covered!
+
+describe Pagy::Backend do
+
+  let(:backend) { TestController.new }
+
+  let(:last_page) { 1000 / 20 }
+
+  before do
+    @collection = TestCollection.new((1..1000).to_a)
+  end
+
+  describe "#pagy_countless" do
+
+    it 'vars[:size] = [1, 4, 4, 1], on first page only show Next page' do
+      pagy, _ = backend.send(:pagy_countless, @collection, { size: [1, 4, 4, 1], page: 1 })
+      pagy.series.must_equal ['1', 2]
+      pagy.prev.must_be_nil
+      pagy.next.must_equal 2
+    end
+
+    it 'vars[:size] = [1, 4, 4, 1] on 25 page, show one next page and previous pages with :gap' do
+      pagy, _ = backend.send(:pagy_countless, @collection, {page: 25})
+      pagy.series.must_equal [1, :gap, 21, 22, 23, 24, '25', 26]
+      pagy.prev.must_equal 24
+      pagy.next.must_equal 26
+    end
+
+    it 'vars[:size] = [1, 4, 4, 1] on last page show previous pages with :gap' do
+      pagy, _ = backend.send(:pagy_countless, @collection, {page: last_page})
+      pagy.series.must_equal [1, :gap, 46, 47, 48, 49, '50']
+      pagy.prev.must_equal 49
+      pagy.next.must_be_nil
+    end
+
+    it 'vars[:size] = [], on first page, should hide seris' do
+      pagy, _ = backend.send(:pagy_countless, @collection, {size: [], page: 1})
+      pagy.series.must_equal []
+      pagy.prev.must_be_nil
+      pagy.next.must_equal 2
+    end
+
+    it 'vars[:size] = [], in the middle, should hide seris' do
+      pagy, _ = backend.send(:pagy_countless, @collection, {size: [], page: 25})
+      pagy.series.must_equal []
+      pagy.prev.must_equal 24
+      pagy.next.must_equal 26
+    end
+
+    it 'vars[:size] = [], on last page, should hide seris' do
+      pagy, _ = backend.send(:pagy_countless, @collection, {size: [], page: last_page})
+      pagy.series.must_equal []
+      pagy.prev.must_equal 49
+      pagy.next.must_be_nil
+    end
+  end
+
+  describe 'page_param in privete method "pagy_countless_get_vars"' do
+
+    let(:backend) { TestController.new({a: 'a', page: 3, page_number: 4}) }
+
+    it 'page_param from defaults' do
+      Pagy::VARS[:page_param] = :page_number
+      pagy, items = backend.send(:pagy_countless, @collection)
+      pagy.page.must_equal 4
+      items.must_equal Array(61..80)
+    end
+
+    it 'page_param from vars' do
+      Pagy::VARS[:page_param] = :page
+      pagy, items = backend.send(:pagy_countless, @collection, {page_param: :page_number})
+      pagy.page.must_equal 4
+      items.must_equal Array(61..80)
+    end
+
+    it 'bypass page_param with vars[:page]' do
+      Pagy::VARS[:page_param] = :page_number
+      pagy, items = backend.send(:pagy_countless, @collection, {page_param: :page_number, page: 1})
+      pagy.page.must_equal 1
+      items.must_equal Array(1..20)
+    end
+
+  end
+end

test/pagy/extras/items_test.rb

@@ -30,7 +30,7 @@
       backend.params.must_equal params
       pagy, _ = backend.send :pagy, @collection, vars
       pagy.items.must_equal 15
-      pagy_countless, _ = backend.send :pagy, @collection, vars
+      pagy_countless, _ = backend.send :pagy_countless, @collection, vars
       pagy_countless.items.must_equal 15
     end
 
@@ -41,7 +41,7 @@
       backend.params.must_equal params
       pagy, _ = backend.send :pagy, @collection, vars
       pagy.items.must_equal 12
-      pagy_countless, _ = backend.send :pagy, @collection, vars
+      pagy_countless, _ = backend.send :pagy_countless, @collection, vars
       pagy_countless.items.must_equal 12
     end
 
@@ -52,7 +52,7 @@
       backend.params.must_equal params
       pagy, _ = backend.send :pagy, @collection, vars
       pagy.items.must_equal 21
-      pagy_countless, _ = backend.send :pagy, @collection, vars
+      pagy_countless, _ = backend.send :pagy_countless, @collection, vars
       pagy_countless.items.must_equal 21
     end
 
@@ -63,7 +63,7 @@
       backend.params.must_equal params
       pagy, _ = backend.send :pagy, @collection, vars
       pagy.items.must_equal 100
-      pagy_countless, _ = backend.send :pagy, @collection, vars
+      pagy_countless, _ = backend.send :pagy_countless, @collection, vars
       pagy_countless.items.must_equal 100
     end
 
@@ -74,7 +74,7 @@
       backend.params.must_equal params
       pagy, _ = backend.send :pagy, @collection, vars
       pagy.items.must_equal 1000
-      pagy_countless, _ = backend.send :pagy, @collection, vars
+      pagy_countless, _ = backend.send :pagy_countless, @collection, vars
       pagy_countless.items.must_equal 1000
     end
 
@@ -87,7 +87,7 @@
         backend.params.must_equal params
         pagy, _ = backend.send :pagy, @collection, vars
         pagy.items.must_equal 1000
-        pagy_countless, _ = backend.send :pagy, @collection, vars
+        pagy_countless, _ = backend.send :pagy_countless, @collection, vars
         pagy_countless.items.must_equal 1000
       }
     end
@@ -99,7 +99,7 @@
       backend.params.must_equal params
       pagy, _ = backend.send :pagy, @collection, vars
       pagy.items.must_equal 14
-      pagy_countless, _ = backend.send :pagy, @collection, vars
+      pagy_countless, _ = backend.send :pagy_countless, @collection, vars
       pagy_countless.items.must_equal 14
     end
 
@@ -112,7 +112,7 @@
         backend.params.must_equal params
         pagy, _ = backend.send :pagy, @collection, vars
         pagy.items.must_equal 15
-        pagy_countless, _ = backend.send :pagy, @collection, vars
+        pagy_countless, _ = backend.send :pagy_countless, @collection, vars
         pagy_countless.items.must_equal 15
       }
     end