tests: add test for php-memcached-dev/php-memcached#531

Author: m6w6

test/tests/memcached/regression/gh-php-memcached_0531.cpp

@@ -0,0 +1,29 @@
+#include "test/lib/common.hpp"
+#include "test/lib/MemcachedCluster.hpp"
+
+TEST_CASE("memcached_regression_gh-php-memcached_0531") {
+  auto test = MemcachedCluster{Cluster{Server{MEMCACHED_BINARY, {"-p", random_socket_or_port_string("-p")}}, 1}};
+  auto memc = &test.memc;
+  auto nonblock = GENERATE(0, 1);
+
+  INFO("nonblock=" << nonblock);
+
+  REQUIRE_SUCCESS(memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_NO_BLOCK, nonblock));
+
+  REQUIRE_SUCCESS(memcached_set(memc, S("first"), S("first"), 0, 0));
+  REQUIRE_SUCCESS(memcached_set(memc, S("second"), S("second"), 0, 0));
+
+  REQUIRE_SUCCESS(memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_POLL_TIMEOUT, 0));
+
+  memcached_return_t rc;
+  size_t len;
+  Malloced value1(memcached_get(memc, S("first"), &len, nullptr, &rc));
+  REQUIRE_RC(MEMCACHED_TIMEOUT, rc);
+  REQUIRE_FALSE(*value1);
+
+  REQUIRE_SUCCESS(memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_POLL_TIMEOUT, 100));
+
+  Malloced value2(memcached_get(memc, S("second"), &len, nullptr, &rc));
+  REQUIRE_SUCCESS(rc);
+  REQUIRE(string(*value2) == string("second"));
+}