From 6b2132751f24ea65264fb2478cc40afa114ec248 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sat, 7 May 2022 02:25:44 +0100
Subject: Helper function to generate a vector of random data of a given size

---
 netfs/unittests/mockFuse.cpp | 14 ++++++++++++++
 netfs/unittests/mockFuse.h   |  2 ++
 2 files changed, 16 insertions(+)

diff --git a/netfs/unittests/mockFuse.cpp b/netfs/unittests/mockFuse.cpp
index a1cf29b..0de5cf2 100644
--- a/netfs/unittests/mockFuse.cpp
+++ b/netfs/unittests/mockFuse.cpp
@@ -1,6 +1,7 @@
 #include "mockFuse.h"
 #include <boost/test/test_tools.hpp>
 #include <buffer.h>
+#include <random>
 
 FuseMock::FuseMock(std::string ep, Ice::StringSeq a) :
 	NetFS::FuseApp(std::move(a)), testEndpoint(std::move(ep)), context({})
@@ -36,6 +37,19 @@ FuseMock::connectToService()
 	}
 }
 
+std::vector<char>
+FuseMock::genRandomData(size_t size)
+{
+	std::vector<char> buf(size);
+	std::generate(begin(buf), end(buf),
+			[dist = std::uniform_int_distribution<char>(
+					 std::numeric_limits<char>::min(), std::numeric_limits<char>::max()),
+					mersenne_engine = std::mt19937(std::random_device()())]() mutable {
+				return dist(mersenne_engine);
+			});
+	return buf;
+}
+
 void
 FuseMock::vlogf(int, const char * fmt, va_list args) const noexcept
 {
diff --git a/netfs/unittests/mockFuse.h b/netfs/unittests/mockFuse.h
index cb69816..7a380eb 100644
--- a/netfs/unittests/mockFuse.h
+++ b/netfs/unittests/mockFuse.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <fuseApp.h>
+#include <vector>
 #include <visibility.h>
 
 class DLL_PUBLIC FuseMock : public NetFS::FuseApp {
@@ -11,6 +12,7 @@ public:
 	void vlogf(int, const char *, va_list) const throw() override;
 
 	void connectToService() override;
+	[[nodiscard]] static std::vector<char> genRandomData(size_t);
 
 private:
 	const std::string testEndpoint;
-- 
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