From: Yann Duplouy <yann.duplouy@inria.fr>
Date: Wed, 15 Apr 2020 10:15:50 +0000 (+0200)
Subject: Unit test to check if the RNG state is written and read correctly
X-Git-Tag: v3.26~641^2~3
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/0a97e88d294a5d816aabb986a20f3c63c5d4a349?hp=d2182f07ffae5d26030b8f05cb2f3eb845c5bb4d

Unit test to check if the RNG state is written and read correctly
---

diff --git a/src/xbt/random_test.cpp b/src/xbt/random_test.cpp
index a35d5804ca..a18ec233b2 100644
--- a/src/xbt/random_test.cpp
+++ b/src/xbt/random_test.cpp
@@ -40,4 +40,18 @@ 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);
+    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);
+    simgrid::xbt::random::read_mersenne_state("rdm_state_tmp.txt");
+    REQUIRE_THAT(simgrid::xbt::random::uniform_real(10, 20), EpsilonApprox(resB));
+    REQUIRE_THAT(simgrid::xbt::random::normal(0, 2), EpsilonApprox(resC));
+  }
 }