# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
# Also available under a BSD-style license. See LICENSE.

import os
import platform
import re
import subprocess
import tempfile

import lit.formats
import lit.util

from lit.llvm import llvm_config
from lit.llvm.subst import ToolSubst
from lit.llvm.subst import FindTool

# Configuration file for the 'lit' test runner.

# name: The name of this test suite.
config.name = 'TORCH_MLIR_PYTHON'

config.test_format = lit.formats.ShTest(not llvm_config.use_lit_shell)
if 'TEST_SRC_PATH' in os.environ:
   config.environment['TEST_SRC_PATH'] = os.environ['TEST_SRC_PATH']

# path to our python operation library
config.environment['TEST_BUILD_PATH'] = os.path.join(config.torch_mlir_obj_root)

# suffixes: A list of file extensions to treat as test files.
config.suffixes = ['.py']

# test_source_root: The root path where tests are located.
config.test_source_root = os.path.dirname(__file__)

# test_exec_root: The root path where tests should be run.
config.test_exec_root = os.path.join(config.torch_mlir_obj_root, 'test')

# On Windows the path to python could contains spaces in which case it needs to
# be provided in quotes.  This is the equivalent of how %python is setup in
# llvm/utils/lit/lit/llvm/config.py.
if "Windows" in config.host_os:
  config.python_executable = '"%s"' % (config.python_executable)

config.substitutions.append(('%PATH%', config.environment['PATH']))
config.substitutions.append(('%shlibext', config.llvm_shlib_ext))
config.substitutions.append(('%PYTHON', config.python_executable))

llvm_config.with_system_environment(
    ['HOME', 'INCLUDE', 'LIB', 'TMP', 'TEMP'])

llvm_config.use_default_substitutions()

# excludes: A list of directories to exclude from the testsuite. The 'Inputs'
# subdirectories contain auxiliary inputs for various tests in their parent
# directories.
config.excludes = ['lit.cfg.py', 'Inputs', 'Examples', 'CMakeLists.txt', 'README.txt', 'LICENSE.txt']

if not bool(int(os.environ.get("TORCH_MLIR_ENABLE_LTC", 0))):
   config.excludes.append("lazy_backend")

# test_source_root: The root path where tests are located.
config.test_source_root = os.path.dirname(__file__)

# test_exec_root: The root path where tests should be run.
config.test_exec_root = os.path.join(config.torch_mlir_obj_root, 'test')
config.torch_mlir_tools_dir = os.path.join(config.torch_mlir_obj_root, 'bin')

# Tweak the PATH to include the tools dir.
llvm_config.with_environment('PATH', config.llvm_tools_dir, append_path=True)
llvm_config.with_environment('PYTHONPATH', [
        os.path.join(config.torch_mlir_python_packages_dir, 'torch_mlir'),
    ],
    append_path=True)


tool_dirs = [config.torch_mlir_tools_dir, config.llvm_tools_dir]
tools = [
    'torch-mlir-opt',
]

llvm_config.add_tool_substitutions(tools, tool_dirs)