Begin work on general NT validator

test/Makefile

@@ -72,6 +72,10 @@ TESTPROD_HOST += ntutilsTest
 ntutilsTest_SRCS = ntutilsTest.cpp
 TESTS += ntutilsTest
 
+TESTPROD_HOST += ntvalidatorTest
+ntutilsTest_SRCS = ntvalidatorTest.cpp
+TESTS += ntvalidatorTest
+
 TESTSCRIPTS_HOST += $(TESTS:%=%.t)
 
 include $(TOP)/configure/RULES

test/ntvalidatorTest.cpp

@@ -0,0 +1,37 @@
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+
+#include <epicsUnitTest.h>
+#include <testMain.h>
+
+#include <pv/ntvalidator.h>
+#include <pv/ntndarray.h>
+
+using namespace epics::nt;
+using epics::pvData::StructureConstPtr;
+using epics::pvData::Field;
+
+void test_isCompatible()
+{
+    testDiag("test_isCompatible");
+
+    StructureConstPtr ref(NTNDArray::createBuilder()->addAlarm()->createStructure());
+
+    Validator::Definition def;
+    def.structure = std::static_pointer_cast<const Field>(ref);
+    def.optional.insert(ref->getField("alarm").get());
+
+    StructureConstPtr struc(NTNDArray::createBuilder()->createStructure());
+
+    testOk1(Validator::isCompatible(def, struc));
+}
+
+MAIN(testNTValidator) {
+    testPlan(1);
+    test_isCompatible();
+    return testDone();
+}
+
+