#!/usr/bin/env python3
#
# Copyright (C) 2018 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
"""Does test_ldflags_to_sanitizers stuff."""
from __future__ import absolute_import
import unittest

try:
    from StringIO import StringIO  # type: ignore
except ImportError:
    from io import StringIO

from build.ldflags_to_sanitizers import argv_to_module_arg_lists
from build.ldflags_to_sanitizers import main as ldflags_main
from build.ldflags_to_sanitizers import sanitizers_from_args


class LdflagsToSanitizersTest(unittest.TestCase):
    def test_sanitizers_from_args_no_sanitize_args(self) -> None:
        """Tests that we don't identify sanitizers when there are none."""
        self.assertListEqual([], sanitizers_from_args([]))
        self.assertListEqual([], sanitizers_from_args(["foo", "bar"]))

    def test_sanitizers_from_args_enabled_sanitizers(self) -> None:
        """Tests that we find enabled sanitizers."""
        self.assertListEqual(["address"], sanitizers_from_args(["-fsanitize=address"]))
        self.assertListEqual(
            ["address"], sanitizers_from_args(["-fsanitize=address", "foo"])
        )
        self.assertListEqual(
            ["address", "undefined"],
            sanitizers_from_args(["-fsanitize=address", "-fsanitize=undefined"]),
        )
        self.assertListEqual(
            ["address", "undefined"],
            sanitizers_from_args(["-fsanitize=address,undefined"]),
        )
        self.assertListEqual(
            ["address", "undefined"],
            sanitizers_from_args(["-fsanitize=address,undefined", "foo"]),
        )

    def test_sanitizers_from_args_disabled_sanitizers(self) -> None:
        """Tests that we don't find disabled sanitizers."""
        self.assertListEqual([], sanitizers_from_args(["-fno-sanitize=address"]))
        self.assertListEqual([], sanitizers_from_args(["-fno-sanitize=address", "foo"]))
        self.assertListEqual(
            [],
            sanitizers_from_args(["-fno-sanitize=address", "-fno-sanitize=undefined"]),
        )
        self.assertListEqual(
            [], sanitizers_from_args(["-fno-sanitize=address,undefined"])
        )
        self.assertListEqual(
            [], sanitizers_from_args(["-fno-sanitize=address,undefined", "foo"])
        )

    def test_sanitizers_from_args_enabled_disabled_sanitizers(self) -> None:
        """Tests that we correctly identify only enabled sanitizers."""
        self.assertListEqual(
            [], sanitizers_from_args(["-fsanitize=address", "-fno-sanitize=address"])
        )
        self.assertListEqual(
            ["address"],
            sanitizers_from_args(
                ["-fsanitize=address", "-fno-sanitize=address", "-fsanitize=address"]
            ),
        )
        self.assertListEqual(
            [],
            sanitizers_from_args(
                [
                    "-fsanitize=address",
                    "-fno-sanitize=address",
                    "-fsanitize=address",
                    "-fno-sanitize=address",
                ]
            ),
        )
        self.assertListEqual(
            ["undefined"],
            sanitizers_from_args(
                ["-fsanitize=address,undefined", "-fno-sanitize=address"]
            ),
        )
        self.assertListEqual(
            ["undefined"],
            sanitizers_from_args(
                ["-fsanitize=address", "-fsanitize=undefined", "-fno-sanitize=address"]
            ),
        )

    def test_argv_to_module_arg_lists(self) -> None:
        """Tests that modules' arguments are properly identified."""
        self.assertTupleEqual(([], []), argv_to_module_arg_lists([]))
        self.assertTupleEqual((["foo"], []), argv_to_module_arg_lists(["foo"]))

        self.assertTupleEqual(
            ([], [["foo", "bar"], ["baz"]]),
            argv_to_module_arg_lists(["--module", "foo", "bar", "--module", "baz"]),
        )

        self.assertTupleEqual(
            (["foo", "bar"], [["baz"]]),
            argv_to_module_arg_lists(["foo", "bar", "--module", "baz"]),
        )

    def test_main(self) -> None:
        """Test that the program itself works."""
        sio = StringIO()
        ldflags_main(
            [
                "ldflags_to_sanitizers.py",
                "-fsanitize=undefined",
                "--module",
                "-fsanitize=address,thread",
                "-fno-sanitize=thread",
                "--module",
                "-fsanitize=undefined",
            ],
            sio,
        )
        self.assertEqual("address undefined", sio.getvalue().strip())