1 files changed, 43 insertions, 0 deletions
diff --git a/spec/lib/json_web_token/rsa_token_spec.rb b/spec/lib/json_web_token/rsa_token_spec.rb
new file mode 100644
index 00000000000..18726754517
--- /dev/null
+++ b/spec/lib/json_web_token/rsa_token_spec.rb
@@ -0,0 +1,43 @@
+describe JSONWebToken::RSAToken do
+  let(:rsa_key) do
+    OpenSSL::PKey::RSA.new <<-eos.strip_heredoc
+      -----BEGIN RSA PRIVATE KEY-----
+      MIIBOgIBAAJBAMA5sXIBE0HwgIB40iNidN4PGWzOyLQK0bsdOBNgpEXkDlZBvnak
+      OUgAPF+rME4PB0Yl415DabUI40T5UNmlwxcCAwEAAQJAZtY2pSwIFm3JAXIh0cZZ
+      iXcAfiJ+YzuqinUOS+eW2sBCAEzjcARlU/o6sFQgtsOi4FOMczAd1Yx8UDMXMmrw
+      2QIhAPBgVhJiTF09pdmeFWutCvTJDlFFAQNbrbo2X2x/9WF9AiEAzLgqMKeStSRu
+      H9N16TuDrUoO8R+DPqriCwkKrSHaWyMCIFzMhE4inuKcSywBaLmiG4m3GQzs++Al
+      A6PRG/PSTpQtAiBxtBg6zdf+JC3GH3zt/dA0/10tL4OF2wORfYQghRzyYQIhAL2l
+      0ZQW+yLIZAGrdBFWYEAa52GZosncmzBNlsoTgwE4
+      -----END RSA PRIVATE KEY-----
+    eos
+  end
+  let(:rsa_token) { described_class.new(nil) }
+  let(:rsa_encoded) { rsa_token.encoded }
+
+  before { allow_any_instance_of(described_class).to receive(:key).and_return(rsa_key) }
+
+  context 'token' do
+    context 'for valid key to be validated' do
+      before { rsa_token['key'] = 'value' }
+
+      subject { JWT.decode(rsa_encoded, rsa_key) }
+
+      it { expect{subject}.not_to raise_error }
+      it { expect(subject.first).to include('key' => 'value') }
+      it do
+        expect(subject.second).to eq(
+          "typ" => "JWT",
+          "alg" => "RS256",
+          "kid" => "OGXY:4TR7:FAVO:WEM2:XXEW:E4FP:TKL7:7ACK:TZAF:D54P:SUIA:P3B2")
+      end
+    end
+
+    context 'for invalid key to raise an exception' do
+      let(:new_key) { OpenSSL::PKey::RSA.generate(512) }
+      subject { JWT.decode(rsa_encoded, new_key) }
+
+      it { expect{subject}.to raise_error(JWT::DecodeError) }
+    end
+  end
+end