1 files changed, 42 insertions, 0 deletions
diff --git a/spec/lib/gitlab/graphql/connections/keyset/conditions/null_condition_spec.rb b/spec/lib/gitlab/graphql/connections/keyset/conditions/null_condition_spec.rb
new file mode 100644
index 00000000000..7fce94adb81
--- /dev/null
+++ b/spec/lib/gitlab/graphql/connections/keyset/conditions/null_condition_spec.rb
@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::Graphql::Connections::Keyset::Conditions::NullCondition do
+  describe '#build' do
+    let(:condition) { described_class.new(Issue.arel_table, %w(relative_position id), [nil, 500], [nil, '>'], before_or_after) }
+
+    context 'when :after' do
+      let(:before_or_after) { :after }
+
+      it 'generates sql' do
+        expected_sql = <<~SQL
+        (
+          "issues"."relative_position" IS NULL
+          AND
+          "issues"."id" > 500
+        )
+        SQL
+
+        expect(condition.build.squish).to eq expected_sql.squish
+      end
+    end
+
+    context 'when :before' do
+      let(:before_or_after) { :before }
+
+      it 'generates :before sql' do
+        expected_sql = <<~SQL
+          (
+            "issues"."relative_position" IS NULL
+            AND
+            "issues"."id" > 500
+          )
+          OR ("issues"."relative_position" IS NOT NULL)
+        SQL
+
+        expect(condition.build.squish).to eq expected_sql.squish
+      end
+    end
+  end
+end