local test_cases = {

		{

			algorithm = "HS256";

			keys = {

				{ "your-256-bit-secret", "your-256-bit-secret" };

				{ "another-secret", "another-secret" };

			};

			{

				name = "jwt.io reference";

				[[eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c]];

				{     -- payload

					sub = "1234567890";

					name = "John Doe";

					iat = 1516239022;

				};

			};

		};

		{

			algorithm = "ES256";

			keys = {

				{ test_keys.ecdsa_private_pem, test_keys.ecdsa_public_pem };

				{ test_keys.alt_ecdsa_private_pem, test_keys.alt_ecdsa_public_pem };

			};

			{

				name = "jwt.io reference";

				[[eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWUsImlhdCI6MTUxNjIzOTAyMn0.tyh-VfuzIxCyGYDlkBA7DfyjrqmSHu6pQ2hoZuFqUSLPNY2N0mpHb3nk5K17HWP_3cYHBw7AhHale5wky6-sVA]];

				{     -- payload

					sub = "1234567890";

					name = "John Doe";

					admin = true;

					iat = 1516239022;

				};

		};

		{

			algorithm = "RS256";

			keys = {

				{ test_keys.rsa_private_pem, test_keys.rsa_public_pem };

				{ test_keys.alt_rsa_private_pem, test_keys.alt_rsa_public_pem };

			};

			{

				name = "jwt.io reference";

				[[eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWUsImlhdCI6MTUxNjIzOTAyMn0.NHVaYe26MbtOYhSKkoKYdFVomg4i8ZJd8_-RU8VNbftc4TSMb4bXP3l3YlNWACwyXPGffz5aXHc6lty1Y2t4SWRqGteragsVdZufDn5BlnJl9pdR_kdVFUsra2rWKEofkZeIC4yWytE58sMIihvo9H1ScmmVwBcQP6XETqYd0aSHp1gOa9RdUPDvoXQ5oqygTqVtxaDr6wUFKrKItgBMzWIdNZ6y7O9E0DhEPTbE9rfBo6KTFsHAZnMg4k68CDp2woYIaXbmYTWcvbzIuHO7_37GT79XdIwkm95QJ7hYC9RiwrV7mesbY4PAahERJawntho0my942XheVLmGwLMBkQ]];

				{     -- payload

					sub = "1234567890";

					name = "John Doe";

					admin = true;

					iat = 1516239022;

				};

			};

		};

		{

			algorithm = "PS256";

			keys = {

				{ test_keys.rsa_private_pem, test_keys.rsa_public_pem };

				{ test_keys.alt_rsa_private_pem, test_keys.alt_rsa_public_pem };

			};

			{

				name = "jwt.io reference";

				[[eyJhbGciOiJQUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWUsImlhdCI6MTUxNjIzOTAyMn0.iOeNU4dAFFeBwNj6qdhdvm-IvDQrTa6R22lQVJVuWJxorJfeQww5Nwsra0PjaOYhAMj9jNMO5YLmud8U7iQ5gJK2zYyepeSuXhfSi8yjFZfRiSkelqSkU19I-Ja8aQBDbqXf2SAWA8mHF8VS3F08rgEaLCyv98fLLH4vSvsJGf6ueZSLKDVXz24rZRXGWtYYk_OYYTVgR1cg0BLCsuCvqZvHleImJKiWmtS0-CymMO4MMjCy_FIl6I56NqLE9C87tUVpo1mT-kbg5cHDD8I7MjCW5Iii5dethB4Vid3mZ6emKjVYgXrtkOQ-JyGMh6fnQxEFN1ft33GX2eRHluK9eg]];

				{     -- payload

					sub = "1234567890";

					name = "John Doe";

					admin = true;

					iat = 1516239022;

				};

			};

		};

	};

	local function do_verify_test(algorithm, verifying_key, token, expect_payload)

		local verify = jwt.new_verifier(algorithm, verifying_key);

		assert.is_string(token);

		local result = {verify(token)};

		if expect_payload then

			assert.same({

				true; -- success

				expect_payload; -- payload

			}, result);

		else

			assert.same({

				false;

				"signature-mismatch";

			}, result);

		end

	end

	local function do_sign_verify_test(algorithm, signing_key, verifying_key, expect_success, expect_token)

		local sign = jwt.new_signer(algorithm, signing_key);

		local test_payload = {

		};

		local token = sign(test_payload);

		if expect_token then

			assert.equal(expect_token, token);

		end

		do_verify_test(algorithm, verifying_key, token, expect_success and test_payload or false);

	end

	for _, algorithm_tests in ipairs(test_cases) do

		local algorithm = algorithm_tests.algorithm;

		local keypairs = algorithm_tests.keys;

		describe(algorithm, function ()

			it("can do basic sign and verify", function ()

				for _, keypair in ipairs(keypairs) do

					local signing_key, verifying_key = keypair[1], keypair[2];

					do_sign_verify_test(algorithm, keypair[1], keypair[2], true);

				end

			end);

			if #keypairs >= 2 then

				it("rejects invalid tokens", function ()

					do_sign_verify_test(algorithm, keypairs[1][1], keypairs[2][2], false);

				end);

			else

				pending("rejects invalid tokens", function ()

					error("Needs at least 2 key pairs");

				end);

			end

			if #algorithm_tests > 0 then

				for test_n, test_case in ipairs(algorithm_tests) do

					it("can verify "..(test_case.name or (("test case %d"):format(test_n))), function ()

						do_verify_test(

							algorithm,

							test_case.verifying_key or keypairs[1][2],

							test_case[1],

							test_case[2]

						);

					end);

				end

			else

				pending("can verify reference tokens", function ()

					error("No test tokens provided");

				end);

			end

		end);

	end