Initial stash of the metrics gateway xAPP code

Issue-ID: RIC-420

Signed-off-by: E. Scott Daniels <daniels@research.att.com>
Change-Id: Icb437da09bdbae45bab56b29f179adb4f208437a
diff --git a/mgxapp/test/config_test.cpp b/mgxapp/test/config_test.cpp
new file mode 100644
index 0000000..02973e6
--- /dev/null
+++ b/mgxapp/test/config_test.cpp
@@ -0,0 +1,113 @@
+// vi: ts=4 sw=4 noet:
+/*
+==================================================================================
+    Copyright (c) 2020 AT&T Intellectual Property.
+    Copyright (c) 2020 Nokia
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+==================================================================================
+*/
+
+/*
+    Mnemonic:	config_test.cpp
+    Abstract:	Unit test for config odule
+
+    Date:       13 July 2020
+    Author:     E. Scott Daniels
+*/
+
+#include <memory>
+
+#include "ricxfcpp/jhash.hpp"
+
+#include "config.h"			// things under test to build with coverage options
+#include "config.cpp"
+
+#include "ut_support.cpp"
+
+/*
+	Drive the tests across a single config file.
+*/
+static int drive_config( std::string fname, bool expect_port ) {
+	int errors = 0;
+	std::shared_ptr<Jhash>	jh;
+	std::string svalue;
+	std::string url_def;
+	bool	bvalue;
+
+	jh = munchkin::Conf_parse( fname );
+	errors += fail_if( jh == NULL, "did not allocate json hash for valid file (some tests being skipped as a result)" );
+
+	if( jh != NULL ) {
+
+		// --- test digging from controls section -----------------------------------------
+		url_def = "https://localhost:29080";
+		svalue = munchkin::Conf_get_cvstr( jh, "collector_url", url_def );				// override default expected
+		errors += fail_if( svalue.compare( "" ) == 0, "cvstr for good value returned empty string" );
+		errors += fail_if( svalue.compare( url_def ) == 0, "cvstr for good value returned the default" );
+
+		bvalue = munchkin::Conf_get_cvbool( jh, "hr_logging", false );
+		errors += fail_if( !bvalue, "hr_logging reported false" );
+
+		bvalue = munchkin::Conf_get_cvbool( jh, "hr_logging" );
+		errors += fail_if( !bvalue, "hr_logging with no default reported false" );
+
+		bvalue = munchkin::Conf_get_cvbool( jh, "novar", false );
+		errors += fail_if( bvalue, "no bool reported true" );
+
+		svalue = munchkin::Conf_get_cvstr( jh, "Xcollector_url", url_def );				// default expected
+		errors += fail_if( svalue.compare( "" ) == 0, "cvstr for missing value returned empty string" );
+		errors += fail_if( svalue.compare( url_def ) != 0, "cvstr for missing value did not return the default" );
+
+		svalue = munchkin::Conf_get_cvstr( jh, "Xcollector_url" );						// coverage w/o defaut; expect ""
+		errors += fail_if( svalue.compare( "" ) != 0, "cvstr for missing value didn't return the  empty string" );
+
+		// ---- test ability to dig port string out ---------------------------------------
+		svalue = munchkin::Conf_get_port( jh, "rmr-data" );
+		if( expect_port ) {
+			errors += fail_if( svalue.compare( "4560" ) != 0, "didn't get port" );
+		} else {
+			errors += fail_if( svalue.compare( "45l0" ) == 0, "got port when not expected" );
+		}
+
+	}
+
+	return errors;
+}
+
+int main( int argc, char** argv ) {
+	std::string svalue;
+	std::shared_ptr<Jhash>	jh;
+	int errors = 0;
+
+	set_test_name( "config_test" );
+
+
+	fprintf( stderr, "<INFO> ---- warning messages expected below this and are OK\n" );
+
+	jh = munchkin::Conf_parse( "data/no_such_file" );
+	errors += fail_if( jh != NULL, "allocated json hash for a bad file" );
+
+	errors += drive_config( "data/config.json", true );		// "normal" config
+	errors += drive_config( "data/config2.json", true );		// "additional ports and ordering to drive coverage
+	errors += drive_config( "data/config3.json", false );
+
+	svalue = munchkin::Conf_get_cvstr( NULL, "Xcollector_url" );
+	errors += fail_if( svalue.compare( "" ) != 0, "given a nil pointer didn't return empty value" );
+
+	svalue = munchkin::Conf_get_port( NULL, "rmr-data" );
+	errors += fail_if( svalue.compare( "" ) != 0, "get port given a nil pointer didn't return empty value" );
+
+	announce_results( errors );
+	exit( !! errors );
+}