Merge #13663: tests: Avoid read/write to default datadir

fa43a41 bench_bitcoin: Avoid read/write to default datadir (MarcoFalke)
ea80b81 test_bitcoin: Avoid read/write to default datadir (MarcoFalke)

Pull request description:

  tests should never read or write and potentially corrupt the default datadir, so try to avoid it.

Tree-SHA512: ee446ff4bf59da2aed38c2e4758581d6103e9d4c35a118497e9ec21d566ba33d913e160c2d7ba2ea6f937f000343ecea3816154bd87ee47f64f5b0cf9e88f6e0

Author: MarcoFalke

src/bench/bench_bitcoin.cpp

@@ -38,6 +38,14 @@ static void SetupBenchArgs()
     gArgs.AddArg("-help", "", false, OptionsCategory::HIDDEN);
 }
 
+static fs::path SetDataDir()
+{
+    fs::path ret = fs::temp_directory_path() / "bench_bitcoin" / fs::unique_path();
+    fs::create_directories(ret);
+    gArgs.ForceSetArg("-datadir", ret.string());
+    return ret;
+}
+
 int main(int argc, char** argv)
 {
     SetupBenchArgs();
@@ -53,6 +61,9 @@ int main(int argc, char** argv)
         return EXIT_SUCCESS;
     }
 
+    // Set the datadir after parsing the bench options
+    const fs::path bench_datadir{SetDataDir()};
+
     SHA256AutoDetect();
     RandomInit();
     ECC_Start();
@@ -80,6 +91,8 @@ int main(int argc, char** argv)
 
     benchmark::BenchRunner::RunAll(*printer, evaluations, scaling_factor, regex_filter, is_list_only);
 
+    fs::remove_all(bench_datadir);
+
     ECC_Stop();
 
     return EXIT_SUCCESS;

src/test/net_tests.cpp

@@ -89,6 +89,7 @@ BOOST_AUTO_TEST_CASE(cnode_listen_port)
 
 BOOST_AUTO_TEST_CASE(caddrdb_read)
 {
+    SetDataDir("caddrdb_read");
     CAddrManUncorrupted addrmanUncorrupted;
     addrmanUncorrupted.MakeDeterministic();
 
@@ -134,6 +135,7 @@ BOOST_AUTO_TEST_CASE(caddrdb_read)
 
 BOOST_AUTO_TEST_CASE(caddrdb_read_corrupted)
 {
+    SetDataDir("caddrdb_read_corrupted");
     CAddrManCorrupted addrmanCorrupted;
     addrmanCorrupted.MakeDeterministic();