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diff --git a/src/sidecars/listener/unit_test.c b/src/sidecars/listener/unit_test.c
new file mode 100644
index 0000000..79bc43f
--- /dev/null
+++ b/src/sidecars/listener/unit_test.c
@@ -0,0 +1,77 @@
+// vim: ts=4 sw=4 noet:
+/*
+ --------------------------------------------------------------------------------
+	Copyright (c) 2018-2019 AT&T Intellectual Property.
+
+   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:	unit_test.c
+	Abstract:	Basic unit tests for the mc listener.
+	Date:		22 August 2019
+	Author: 	E. Scott Daniels
+*/
+
+// this/these are what we are testing; include them directly
+#include "mcl.c"
+
+/*
+	Parms:	[fifo-dir-name]
+*/
+int main( int argc,  char** argv ) {
+	void*	ctx;
+	int		errors;
+	char*	dname = "/tmp/fifos";
+	char*	port = "4560";
+	int		fd;
+	int		fd2;
+
+	if( argc > 1 ) {
+		dname = argv[1];
+	}
+	
+	ctx = mcl_mk_context( dname );
+	if( ctx == NULL ) {
+		fprintf( stderr, "[FAIL] couldn't make context" );
+		exit( 1 );
+	}
+
+	mcl_set_sigh();			// prevent colobber from broken pipe
+
+	fd = suss_fifo( ctx, 101, 1 );				// should open the file for writing and return the fdes
+	if( fd < 0 ) {
+		fprintf( stderr, "[FAIL] suss_fifo did not return a valid fd\n" );
+		errors++;
+	}
+
+	fd2= suss_fifo( ctx, 101, 0 );				// should open the file file for reading and return a different fd
+	if( fd < 0 ) {
+		fprintf( stderr, "[FAIL] suss_fifo did not return a valid fd\n" );
+		errors++;
+	}
+	if( fd == fd2 ) {
+		fprintf( stderr, "[FAIL] reading and writing fifo file descriptors expected to differ; both were %d\n", fd );
+		errors++;
+	}
+
+	mcl_start_listening( ctx, port, 0 );			// start the listener, no waiting for rt since we don't send
+
+	if( ! errors ) {
+		fprintf( stderr, "[PASS] all tests look peachy\n" );
+	}
+
+	return errors != 0;
+}
+