Fix iterating using only a timestamp column (#5)

CHANGELOG.md

@@ -1,5 +1,7 @@
 ## master (unreleased)
 
+- Fix iterating using only a timestamp column
+
 - Add the ability to skip implicitly appending a primary key to the list of sorting columns.
 
     It may be useful to disable it for the table with a UUID primary key or when the sorting

lib/activerecord_cursor_paginate/cursor.rb

@@ -48,8 +48,8 @@ def deserialize_time_if_needed(value)
     attr_reader :columns, :values
 
     def initialize(columns:, values:)
-      @columns = Array(columns)
-      @values = Array(values)
+      @columns = Array.wrap(columns)
+      @values = Array.wrap(values)
 
       raise ArgumentError, "Cursor values can not be nil" if @values.any?(nil)
       raise ArgumentError, ":columns and :values have different sizes" if @columns.size != @values.size

test/paginator_test.rb

@@ -184,6 +184,15 @@ def test_paginating_over_time_column
     assert_equal([7, 4, 10], page2.records.pluck(:id))
   end
 
+  def test_paginating_over_time_column_without_primary_key
+    p = User.cursor_paginate(limit: 3, order: { created_at: :asc }, append_primary_key: false)
+    page1 = p.fetch
+    assert_equal([5, 3, 8], page1.records.pluck(:id))
+
+    page2 = p.fetch
+    assert_equal([7, 4, 10], page2.records.pluck(:id))
+  end
+
   def test_paginating_over_all_pages
     p = User.cursor_paginate(limit: 2)