use catch2 way of doing this

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

diff --git a/src/xbt/random_test.cpp b/src/xbt/random_test.cpp
index c964cb8..c35943e 100644 (file)
--- a/src/xbt/random_test.cpp
+++ b/src/xbt/random_test.cpp
@@ -9,16 +9,17 @@
 #include <random>
 #include <cmath>
 
+#define EPSILON (100*std::numeric_limits<double>::epsilon())
+
 TEST_CASE("xbt::random: Random Number Generation")
 {
   SECTION("Using XBT_RNG_xbt")
   {
     simgrid::xbt::random::set_mersenne_seed(12345);
-
-    REQUIRE(fabs(simgrid::xbt::random::exponential(25) - 0.00291934351538427348) <= 1e-14);
+    REQUIRE(simgrid::xbt::random::exponential(25) == Approx(0.00291934351538427348).epsilon(EPSILON));
     REQUIRE(simgrid::xbt::random::uniform_int(1, 6) == 4);
-    REQUIRE(fabs(simgrid::xbt::random::uniform_real(0, 1) - 0.31637556043369124970) <= 1e-14);
-    REQUIRE(fabs(simgrid::xbt::random::normal(0, 2) - 1.62746784745133976635) <= 1e-14);
+    REQUIRE(simgrid::xbt::random::uniform_real(0, 1) == Approx(0.31637556043369124970).epsilon(EPSILON));
+    REQUIRE(simgrid::xbt::random::normal(0, 2) == Approx(1.62746784745133976635).epsilon(EPSILON));
   }
 
   SECTION("Using XBT_RNG_std")
@@ -34,9 +35,9 @@ TEST_CASE("xbt::random: Random Number Generation")
     std::uniform_real_distribution<> distC(0, 1);
     std::normal_distribution<> distD(0, 2);
 
-    REQUIRE(fabs(simgrid::xbt::random::exponential(25) - distA(gen)) <= 1e-14);
+    REQUIRE(simgrid::xbt::random::exponential(25) == Approx(distA(gen)).epsilon(EPSILON));
     REQUIRE(simgrid::xbt::random::uniform_int(1, 6) == distB(gen));
-    REQUIRE(fabs(simgrid::xbt::random::uniform_real(0, 1) - distC(gen)) <= 1e-14);
-    REQUIRE(fabs(simgrid::xbt::random::normal(0, 2) - distD(gen)) <= 1e-14);
+    REQUIRE(simgrid::xbt::random::uniform_real(0, 1) == Approx(distC(gen)).epsilon(EPSILON));
+    REQUIRE(simgrid::xbt::random::normal(0, 2) == Approx(distD(gen)).epsilon(EPSILON));
   }
 }