Start Testing LMM

diff --git a/teshsuite/surf/lmm_usage/lmm_basic.cpp b/teshsuite/surf/lmm_usage/lmm_basic.cpp
new file mode 100644 (file)
index 0000000..9129ce6
--- /dev/null
+++ b/teshsuite/surf/lmm_usage/lmm_basic.cpp
@@ -0,0 +1,42 @@
+#include "src/include/catch.hpp"
+#include "src/kernel/lmm/maxmin.hpp"
+#include "src/surf/surf_interface.hpp"
+#include "xbt/log.h"
+
+#define DOUBLE_PRECISION 0.00001
+
+// Namespace shortcut
+namespace lmm = simgrid::kernel::lmm;
+
+// XBT_LOG_NEW_DEFAULT_CATEGORY(surf_test, "Messages specific for surf example");
+// XBT_INFO("V1=%g V2=%g V3=%g",V1->get_value(),V2->get_value(),V3->get_value());
+
+TEST_CASE("Test on small systems", "[lmm-small-systems]")
+{
+  lmm::System* Sys = lmm::make_new_maxmin_system(false);
+
+  SECTION("Check variables weight (sharing_weight)")
+  {
+
+    // Create constraint
+    lmm::Constraint* C = Sys->constraint_new(nullptr, 10);
+
+    // Create the 3 variables (with increasing weight from 1 to 3)
+    lmm::Variable* V1 =
+        Sys->variable_new(nullptr, 1, 0.0, 1); // id=nullptr, weight_value=1, bound=0, number_of_constraints=1
+    lmm::Variable* V2 = Sys->variable_new(nullptr, 2, 0.0, 1);
+    lmm::Variable* V3 = Sys->variable_new(nullptr, 3, 0.0, 1);
+
+    // Link Variables to Constraint with constant weight 1
+    Sys->expand(C, V1, 1);
+    Sys->expand(C, V2, 1);
+    Sys->expand(C, V3, 1);
+
+    Sys->solve();
+
+    // Compare with theorical values
+    REQUIRE(double_equals(V1->get_value(), 5.45455, DOUBLE_PRECISION));
+    REQUIRE(double_equals(V2->get_value(), 2.72727, DOUBLE_PRECISION));
+    REQUIRE(double_equals(V3->get_value(), 1.81818, DOUBLE_PRECISION));
+  }
+}