Chemistry basic example

libskrypt/tests/Chemistry.cpp

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+#define BOOST_TEST_MODULE Chemistry test
+#include <boost/test/unit_test.hpp>
+#include "skrypt.h"
+
+using namespace ::skrypt;
+using namespace std::string_literals;
+using namespace std::string_view_literals;
+
+BOOST_AUTO_TEST_CASE(ChemistryMinimalTest) {
+    Skrypt skrypt;
+    skrypt.Load(TEST_SRC_DIR "Chemistry.skrypt");
+
+    // get the variable
+    auto variableName = "nv"s;
+    auto varhost = skrypt.GetVarHost();
+    auto& pendingTheVariable = varhost->Host(variableName);
+
+    // check that the variable is already solved
+    auto& nitrogenValencySolutions = skrypt.Known(pendingTheVariable);
+    BOOST_TEST(nitrogenValencySolutions.size() == 1);
+    for (auto& solution : nitrogenValencySolutions) {
+        BOOST_TEST(solution == 1);
+    }
+}

libskrypt/tests/Chemistry.skrypt

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+nk*nv-ok*ov
+ov-2
+
+ok-1
+nk-2
+
+nv