Update copyright lines for 2022.

[simgrid.git] / src / xbt / random_test.cpp

diff --git a/src/xbt/random_test.cpp b/src/xbt/random_test.cpp
index a18ec23..eed3783 100644 (file)
--- a/src/xbt/random_test.cpp
+++ b/src/xbt/random_test.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2019-2020. The SimGrid Team. All rights reserved.               */
+/* Copyright (c) 2019-2022. The SimGrid Team. All rights reserved.               */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
@@ -15,11 +15,24 @@ TEST_CASE("xbt::random: Random Number Generation")
 {
   SECTION("Using XBT_RNG_xbt")
   {
+    simgrid::xbt::random::set_implem_xbt();
     simgrid::xbt::random::set_mersenne_seed(12345);
     REQUIRE_THAT(simgrid::xbt::random::exponential(25), EpsilonApprox(0.00291934351538427348));
     REQUIRE(simgrid::xbt::random::uniform_int(1, 6) == 4);
     REQUIRE_THAT(simgrid::xbt::random::uniform_real(0, 1), EpsilonApprox(0.31637556043369124970));
     REQUIRE_THAT(simgrid::xbt::random::normal(0, 2), EpsilonApprox(1.62746784745133976635));
+
+    constexpr int imin = std::numeric_limits<int>::min();
+    constexpr int imax = std::numeric_limits<int>::max();
+    REQUIRE(simgrid::xbt::random::uniform_int(0, 0) == 0);
+    REQUIRE(simgrid::xbt::random::uniform_int(imin, imin) == imin);
+    REQUIRE(simgrid::xbt::random::uniform_int(imax, imax) == imax);
+
+    REQUIRE(simgrid::xbt::random::uniform_int(-6, -1) == -3);
+    REQUIRE(simgrid::xbt::random::uniform_int(-10, 10) == 7);
+    REQUIRE(simgrid::xbt::random::uniform_int(imin, 2) == -163525263);
+    REQUIRE(simgrid::xbt::random::uniform_int(-2, imax) == 1605979225);
+    REQUIRE(simgrid::xbt::random::uniform_int(imin, imax) == 659577591);
   }
 
   SECTION("Using XBT_RNG_std")
@@ -47,11 +60,16 @@ TEST_CASE("xbt::random: Random Number Generation")
     simgrid::xbt::random::set_mersenne_seed(12345);
 
     simgrid::xbt::random::exponential(25);
-    simgrid::xbt::random::write_mersenne_state("rdm_state_tmp.txt");
+    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);
-    simgrid::xbt::random::read_mersenne_state("rdm_state_tmp.txt");
+    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");
+    }
   }
 }