add a missing init file

tools/bazel/tests/Makefile

@@ -45,7 +45,7 @@ FUNCTIONAL_TEST_CMD = $(REPO_ROOT) $(TEST_PROJECT) \
 CLEAR_WORKSPACE_CMD = cd tests/functional/ && bazel clean --expunge && cd -
 
 test_functional:
-	CCACHE_DISABLE=1 $(CLEAR_WORKSPACE_CMD) && $(FUNCTIONAL_TEST_CMD)
+	CCACHE_DISABLE=1 $(CLEAR_WORKSPACE_CMD) && env && CCACHE_DISABLE=1 $(FUNCTIONAL_TEST_CMD)
 
 test_functional_in_env: venv_dev
 	$(ACTIVATE_DEV_VENV) && $(FUNCTIONAL_TEST_CMD)

tools/bazel/tests/functional/__init__.py

@@ -0,0 +1,27 @@
+# coding=utf-8
+# -------------------------------------------------------------------------
+#
+#  Part of the CodeChecker project, under the Apache License v2.0 with
+#  LLVM Exceptions. See LICENSE for license information.
+#  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+# -------------------------------------------------------------------------
+"""
+Setup python modules for the unit tests.
+"""
+
+
+import os
+import sys
+
+REPO_ROOT = os.path.abspath(os.environ['REPO_ROOT'])
+PKG_ROOT = os.path.join(REPO_ROOT, 'build', 'CodeChecker')
+
+os.environ["CC_DATA_FILES_DIR"] = PKG_ROOT
+
+sys.path.append(REPO_ROOT)
+sys.path.append(os.path.join(
+  REPO_ROOT, 'analyzer', 'tools', 'statistics_collector'))
+sys.path.append(os.path.join(PKG_ROOT, 'bin'))
+sys.path.append(os.path.join(REPO_ROOT, 'tools', 'report-converter'))
+sys.path.append(os.path.join(PKG_ROOT, 'lib', 'python3'))