[Lib] Add unit test for bus group

libopenfpga/libbusgroup/test/xml_io_bus_group.cpp

@@ -0,0 +1,33 @@
+/********************************************************************
+ * Unit test functions to validate the correctness of 
+ * 1. parser of data structures
+ * 2. writer of data structures
+ *******************************************************************/
+/* Headers from vtrutils */
+#include "vtr_assert.h"
+#include "vtr_log.h"
+
+/* Headers from readarchopenfpga */
+#include "read_xml_bus_group.h"
+#include "write_xml_bus_group.h"
+
+int main(int argc, const char** argv) {
+  /* Ensure we have only one or two argument */
+  VTR_ASSERT((2 == argc) || (3 == argc));
+
+  /* Parse the circuit library from an XML file */
+  const openfpga::BusGroup& bus_group = read_xml_bus_group(argv[1]); 
+  VTR_LOG("Parsed %lu bus(es) from XML into bus group.\n",
+          bus_group.buses().size());
+
+  /* Output the bus group to an XML file
+   * This is optional only used when there is a second argument
+   */
+  if (3 <= argc) { 
+    write_xml_bus_group(argv[2], bus_group);
+    VTR_LOG("Write the bus group to an XML file: %s.\n",
+            argv[2]);
+  }
+}
+
+