test: process: Test Process::kill()

Add a test to ensure that Process::kill() on an unstarted process is
safe. This aims at ensuring we don't kill other processes unexpectedly.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

test/process/process_test.cpp

@@ -51,6 +51,10 @@ protected:
 		args.push_back(to_string(exitCode));
 		proc_.finished.connect(this, &ProcessTest::procFinished);
 
+		/* Test that kill() on an unstarted process is safe. */
+		proc_.kill();
+
+		/* Test starting the process and retrieving the exit code. */
 		int ret = proc_.start("/proc/self/exe", args);
 		if (ret) {
 			cerr << "failed to start process" << endl;