test: Move linters to test/lint, add readme

test/lint/lint-tests.sh

@@ -0,0 +1,34 @@
+#!/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 conventions
+
+EXIT_CODE=0
+
+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_CODE=1
+fi
+
+TEST_SUITE_NAME_COLLISSIONS=$(git grep -E '^BOOST_FIXTURE_TEST_SUITE\(' -- \
+    "src/test/**.cpp" "src/wallet/test/**.cpp" | cut -f2 -d'(' | cut -f1 -d, | \
+    sort | uniq -d)
+if [[ ${TEST_SUITE_NAME_COLLISSIONS} != "" ]]; then
+    echo "Test suite names must be unique. The following test suite names"
+    echo "appear to be used more than once:"
+    echo
+    echo "${TEST_SUITE_NAME_COLLISSIONS}"
+    EXIT_CODE=1
+fi
+
+exit ${EXIT_CODE}