Merge branch '63510-error-parsing-true-boolean-in-gitlab-jsoncache' into 'master'

Gitlab::JsonCache#parse_value ensure string

Closes #63510

See merge request gitlab-org/gitlab-ce!29885

lib/gitlab/json_cache.rb

@@ -58,7 +58,7 @@ module Gitlab
     private
     def parse_value(raw, klass)
-      value = ActiveSupport::JSON.decode(raw)
+      value = ActiveSupport::JSON.decode(raw.to_s)
       case value
       when Hash then parse_entry(value, klass)

spec/lib/gitlab/json_cache_spec.rb

@@ -106,6 +106,16 @@ describe Gitlab::JsonCache do
       expect(cache.read(key)).to be_nil
     end
+    context 'when the cached value is a boolean' do
+      it 'parses the cached value' do
+        allow(backend).to receive(:read)
+          .with(expanded_key)
+          .and_return(true)
+
+        expect(cache.read(key, BroadcastMessage)).to eq(true)
+      end
+    end
+
     context 'when the cached value is a hash' do
       it 'parses the cached value' do
         allow(backend).to receive(:read)