From 137c19cce845745ebfd8479ebf4e5829bfb81650 Mon Sep 17 00:00:00 2001
From: simon lehericey <mail@simon.lehericey.net>
Date: Tue, 17 Oct 2023 23:37:01 +0200
Subject: [PATCH] add previous_page?

---
 app/graphql/connections/cursor_connection.rb  |  4 +++
 .../connections/cursor_connection_spec.rb     | 26 +++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/app/graphql/connections/cursor_connection.rb b/app/graphql/connections/cursor_connection.rb
index 34db4fb56..dc9699530 100644
--- a/app/graphql/connections/cursor_connection.rb
+++ b/app/graphql/connections/cursor_connection.rb
@@ -62,6 +62,10 @@ module Connections
       [limit, inverted]
     end
 
+    def previous_page?(after, result_size, limit, inverted)
+      after.present? || (result_size == limit && inverted)
+    end
+
     def load_nodes
       @nodes ||= begin
         ensure_valid_params
diff --git a/spec/graphql/connections/cursor_connection_spec.rb b/spec/graphql/connections/cursor_connection_spec.rb
index 57ef64b89..2410e7401 100644
--- a/spec/graphql/connections/cursor_connection_spec.rb
+++ b/spec/graphql/connections/cursor_connection_spec.rb
@@ -57,4 +57,30 @@ RSpec.describe Connections::CursorConnection do
       it { is_expected.to eq(limit: 3, inverted: true) }
     end
   end
+
+  describe '.previous_page?' do
+    let(:after) { nil }
+    let(:result_size) { nil }
+    let(:limit) { nil }
+    let(:inverted) { false }
+
+    subject do
+      cursor = Connections::CursorConnection.new(Dossier)
+      cursor.send(:previous_page?, after, result_size, limit, inverted)
+    end
+
+    context 'when after is present' do
+      let(:after) { :after }
+
+      it { is_expected.to be true }
+    end
+
+    context 'when inverted and result_size == limit' do
+      let(:inverted) { true }
+      let(:result_size) { 3 }
+      let(:limit) { 3 }
+
+      it { is_expected.to be true }
+    end
+  end
 end