Add a first scenario for Network using CATCH

src/test/unit/NetworkTest.hpp

@@ -0,0 +1,53 @@
+#include "catch.hpp"
+
+#include <nta/engine/Network.hpp>
+#include <nta/engine/NuPIC.hpp>
+#include <nta/engine/Region.hpp>
+#include <nta/ntypes/Dimensions.hpp>
+
+using namespace nta;
+
+SCENARIO( "creating a network should auto-initialize NuPIC", "[network]" ) {
+
+  GIVEN( "uninitialized NuPIC" ) {
+
+    // Uninitialize NuPIC since this test checks auto-initialization
+    // If shutdown fails, there is probably a problem with another test which 
+    // is not cleaning up its networks. 
+    if (NuPIC::isInitialized())
+    {
+      NuPIC::shutdown();
+    }
+
+    REQUIRE(!NuPIC::isInitialized());
+
+
+    WHEN("creates a network") {
+        Network net;
+
+        THEN("NuPIC should be initialized") {
+          CHECK(NuPIC::isInitialized());
+        }
+
+        WHEN("adds a region to the network") {
+          Region *l1 = net.addRegion("level1", "TestNode", "");
+
+          THEN("region name should be as specified") {
+            CHECK("level1" == l1->getName());
+          }
+        }
+
+        AND_THEN("NuPIC should fail to shutdown") {
+          // Network still exists, so this should fail. 
+          CHECK_THROWS(NuPIC::shutdown());
+        }
+    }
+
+    WHEN("No network exists") {
+      THEN("NuPIC can be shut down") {
+        // net destructor has been called so we should be able to shut down NuPIC now
+        CHECK_NOTHROW(NuPIC::shutdown());
+      }
+    }
+  }
+}

src/test/unit/UnitTestRunner.cpp

@@ -1,3 +1,4 @@
 #define CATCH_CONFIG_MAIN  // This tells Catch to provide a main() - only do this in one cpp file
 #include "catch.hpp"
 
+#include "NetworkTest.hpp"