X-Git-Url: http://bilbo.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/9104957deccc59e0e804215d5db498fabfd40d29..bc603041d7ce7e32a2c888e7156e30035368b226:/src/xbt/random_test.cpp

diff --git a/src/xbt/random_test.cpp b/src/xbt/random_test.cpp
index b7c10e8a2c..9b66134836 100644
--- a/src/xbt/random_test.cpp
+++ b/src/xbt/random_test.cpp
@@ -27,8 +27,8 @@ TEST_CASE("xbt::random: Random Number Generation")
     std::mt19937 gen;
     gen.seed(12345);
 
-    simgrid::xbt::random::set_mersenne_seed(12345);
     simgrid::xbt::random::set_implem_std();
+    simgrid::xbt::random::set_mersenne_seed(12345);
 
     std::exponential_distribution<> distA(25);
     std::uniform_int_distribution<> distB(1, 6);
@@ -40,4 +40,23 @@ TEST_CASE("xbt::random: Random Number Generation")
     REQUIRE_THAT(simgrid::xbt::random::uniform_real(0, 1), EpsilonApprox(distC(gen)));
     REQUIRE_THAT(simgrid::xbt::random::normal(0, 2), EpsilonApprox(distD(gen)));
   }
+
+  SECTION("XBT_RNG_std write to a file")
+  {
+    simgrid::xbt::random::set_implem_std();
+    simgrid::xbt::random::set_mersenne_seed(12345);
+
+    simgrid::xbt::random::exponential(25);
+    bool writtenA = simgrid::xbt::random::write_mersenne_state("rdm_state_tmp.txt");
+    double resB = simgrid::xbt::random::uniform_real(10, 20);
+    double resC = simgrid::xbt::random::normal(0, 2);
+    bool writtenB = simgrid::xbt::random::read_mersenne_state("rdm_state_tmp.txt");
+    REQUIRE(writtenA);
+    REQUIRE(writtenB);
+    REQUIRE_THAT(simgrid::xbt::random::uniform_real(10, 20), EpsilonApprox(resB));
+    REQUIRE_THAT(simgrid::xbt::random::normal(0, 2), EpsilonApprox(resC));
+    if (writtenB) {
+      std::remove("rdm_state_tmp.txt");
+    }
+  }
 }