tests: Add lint-tests.sh which checks the test suite naming convention

contrib/devtools/lint-tests.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+#
+# Copyright (c) 2018 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+#
+# Check the test suite naming convention
+
+NAMING_INCONSISTENCIES=$(git grep -E '^BOOST_FIXTURE_TEST_SUITE\(' -- \
+    "src/test/**.cpp" "src/wallet/test/**.cpp" | \
+    grep -vE '/(.*?)\.cpp:BOOST_FIXTURE_TEST_SUITE\(\1, .*\)$')
+if [[ ${NAMING_INCONSISTENCIES} != "" ]]; then
+    echo "The test suite in file src/test/foo_tests.cpp should be named"
+    echo "\"foo_tests\". Please make sure the following test suites follow"
+    echo "that convention:"
+    echo
+    echo "${NAMING_INCONSISTENCIES}"
+    exit 1
+fi