Check for PS support

Author: anakinj

.github/workflows/test.yml

@@ -64,7 +64,6 @@ jobs:
     continue-on-error: ${{ matrix.experimental }}
     env:
       BUNDLE_GEMFILE: ${{ matrix.gemfile }}
-
     steps:
       - uses: actions/checkout@v4
 

gemfiles/openssl.gemfile

@@ -2,6 +2,6 @@
 
 source "https://rubygems.org"
 
-gem "openssl", "~> 2.0.0"
+gem "openssl", "< 2.1"
 
 gemspec path: "../"

spec/jwt/jwa/ps_spec.rb

@@ -7,6 +7,10 @@
   let(:ps384_instance) { described_class.new('PS384') }
   let(:ps512_instance) { described_class.new('PS512') }
 
+  before do
+    skip 'OpenSSL gem missing RSA-PSS support' unless OpenSSL::PKey::RSA.new.respond_to?(:sign_pss=)
+  end
+
   describe '#initialize' do
     it 'initializes with the correct algorithm and digest' do
       expect(ps256_instance.instance_variable_get(:@alg)).to eq('PS256')