import os
import textwrap

import py

import pytest
from _pytest.config import ExitCode
from _pytest.config import PytestPluginManager
from _pytest.pathlib import Path
from _pytest.pathlib import symlink_or_skip


def ConftestWithSetinitial(path):
    conftest = PytestPluginManager()
    conftest_setinitial(conftest, [path])
    return conftest


def conftest_setinitial(conftest, args, confcutdir=None):
    class Namespace:
        def __init__(self):
            self.file_or_dir = args
            self.confcutdir = str(confcutdir)
            self.noconftest = False
            self.pyargs = False
            self.importmode = "prepend"

    conftest._set_initial_conftests(Namespace())


@pytest.mark.usefixtures("_sys_snapshot")
class TestConftestValueAccessGlobal:
    @pytest.fixture(scope="module", params=["global", "inpackage"])
    def basedir(self, request, tmpdir_factory):
        tmpdir = tmpdir_factory.mktemp("basedir", numbered=True)
        tmpdir.ensure("adir/conftest.py").write("a=1 ; Directory = 3")
        tmpdir.ensure("adir/b/conftest.py").write("b=2 ; a = 1.5")
        if request.param == "inpackage":
            tmpdir.ensure("adir/__init__.py")
            tmpdir.ensure("adir/b/__init__.py")

        yield tmpdir

    def test_basic_init(self, basedir):
        conftest = PytestPluginManager()
        p = basedir.join("adir")
        assert conftest._rget_with_confmod("a", p, importmode="prepend")[1] == 1

    def test_immediate_initialiation_and_incremental_are_the_same(self, basedir):
        conftest = PytestPluginManager()
        assert not len(conftest._dirpath2confmods)
        conftest._getconftestmodules(basedir, importmode="prepend")
        snap1 = len(conftest._dirpath2confmods)
        assert snap1 == 1
        conftest._getconftestmodules(basedir.join("adir"), importmode="prepend")
        assert len(conftest._dirpath2confmods) == snap1 + 1
        conftest._getconftestmodules(basedir.join("b"), importmode="prepend")
        assert len(conftest._dirpath2confmods) == snap1 + 2

    def test_value_access_not_existing(self, basedir):
        conftest = ConftestWithSetinitial(basedir)
        with pytest.raises(KeyError):
            conftest._rget_with_confmod("a", basedir, importmode="prepend")

    def test_value_access_by_path(self, basedir):
        conftest = ConftestWithSetinitial(basedir)
        adir = basedir.join("adir")
        assert conftest._rget_with_confmod("a", adir, importmode="prepend")[1] == 1
        assert (
            conftest._rget_with_confmod("a", adir.join("b"), importmode="prepend")[1]
            == 1.5
        )

    def test_value_access_with_confmod(self, basedir):
        startdir = basedir.join("adir", "b")
        startdir.ensure("xx", dir=True)
        conftest = ConftestWithSetinitial(startdir)
        mod, value = conftest._rget_with_confmod("a", startdir, importmode="prepend")
        assert value == 1.5
        path = py.path.local(mod.__file__)
        assert path.dirpath() == basedir.join("adir", "b")
        assert path.purebasename.startswith("conftest")


def test_conftest_in_nonpkg_with_init(tmpdir, _sys_snapshot):
    tmpdir.ensure("adir-1.0/conftest.py").write("a=1 ; Directory = 3")
    tmpdir.ensure("adir-1.0/b/conftest.py").write("b=2 ; a = 1.5")
    tmpdir.ensure("adir-1.0/b/__init__.py")
    tmpdir.ensure("adir-1.0/__init__.py")
    ConftestWithSetinitial(tmpdir.join("adir-1.0", "b"))


def test_doubledash_considered(testdir):
    conf = testdir.mkdir("--option")
    conf.ensure("conftest.py")
    conftest = PytestPluginManager()
    conftest_setinitial(conftest, [conf.basename, conf.basename])
    values = conftest._getconftestmodules(conf, importmode="prepend")
    assert len(values) == 1


def test_issue151_load_all_conftests(testdir):
    names = "code proj src".split()
    for name in names:
        p = testdir.mkdir(name)
        p.ensure("conftest.py")

    conftest = PytestPluginManager()
    conftest_setinitial(conftest, names)
    d = list(conftest._conftestpath2mod.values())
    assert len(d) == len(names)


def test_conftest_global_import(testdir):
    testdir.makeconftest("x=3")
    p = testdir.makepyfile(
        """
        import py, pytest
        from _pytest.config import PytestPluginManager
        conf = PytestPluginManager()
        mod = conf._importconftest(py.path.local("conftest.py"), importmode="prepend")
        assert mod.x == 3
        import conftest
        assert conftest is mod, (conftest, mod)
        subconf = py.path.local().ensure("sub", "conftest.py")
        subconf.write("y=4")
        mod2 = conf._importconftest(subconf, importmode="prepend")
        assert mod != mod2
        assert mod2.y == 4
        import conftest
        assert conftest is mod2, (conftest, mod)
    """
    )
    res = testdir.runpython(p)
    assert res.ret == 0


def test_conftestcutdir(testdir):
    conf = testdir.makeconftest("")
    p = testdir.mkdir("x")
    conftest = PytestPluginManager()
    conftest_setinitial(conftest, [testdir.tmpdir], confcutdir=p)
    values = conftest._getconftestmodules(p, importmode="prepend")
    assert len(values) == 0
    values = conftest._getconftestmodules(conf.dirpath(), importmode="prepend")
    assert len(values) == 0
    assert conf not in conftest._conftestpath2mod
    # but we can still import a conftest directly
    conftest._importconftest(conf, importmode="prepend")
    values = conftest._getconftestmodules(conf.dirpath(), importmode="prepend")
    assert values[0].__file__.startswith(str(conf))
    # and all sub paths get updated properly
    values = conftest._getconftestmodules(p, importmode="prepend")
    assert len(values) == 1
    assert values[0].__file__.startswith(str(conf))


def test_conftestcutdir_inplace_considered(testdir):
    conf = testdir.makeconftest("")
    conftest = PytestPluginManager()
    conftest_setinitial(conftest, [conf.dirpath()], confcutdir=conf.dirpath())
    values = conftest._getconftestmodules(conf.dirpath(), importmode="prepend")
    assert len(values) == 1
    assert values[0].__file__.startswith(str(conf))


@pytest.mark.parametrize("name", "test tests whatever .dotdir".split())
def test_setinitial_conftest_subdirs(testdir, name):
    sub = testdir.mkdir(name)
    subconftest = sub.ensure("conftest.py")
    conftest = PytestPluginManager()
    conftest_setinitial(conftest, [sub.dirpath()], confcutdir=testdir.tmpdir)
    key = Path(str(subconftest)).resolve()
    if name not in ("whatever", ".dotdir"):
        assert key in conftest._conftestpath2mod
        assert len(conftest._conftestpath2mod) == 1
    else:
        assert key not in conftest._conftestpath2mod
        assert len(conftest._conftestpath2mod) == 0


def test_conftest_confcutdir(testdir):
    testdir.makeconftest("assert 0")
    x = testdir.mkdir("x")
    x.join("conftest.py").write(
        textwrap.dedent(
            """\
            def pytest_addoption(parser):
                parser.addoption("--xyz", action="store_true")
            """
        )
    )
    result = testdir.runpytest("-h", "--confcutdir=%s" % x, x)
    result.stdout.fnmatch_lines(["*--xyz*"])
    result.stdout.no_fnmatch_line("*warning: could not load initial*")


def test_conftest_symlink(testdir):
    """`conftest.py` discovery follows normal path resolution and does not resolve symlinks."""
    # Structure:
    # /real
    # /real/conftest.py
    # /real/app
    # /real/app/tests
    # /real/app/tests/test_foo.py

    # Links:
    # /symlinktests -> /real/app/tests (running at symlinktests should fail)
    # /symlink -> /real (running at /symlink should work)

    real = testdir.tmpdir.mkdir("real")
    realtests = real.mkdir("app").mkdir("tests")
    symlink_or_skip(realtests, testdir.tmpdir.join("symlinktests"))
    symlink_or_skip(real, testdir.tmpdir.join("symlink"))
    testdir.makepyfile(
        **{
            "real/app/tests/test_foo.py": "def test1(fixture): pass",
            "real/conftest.py": textwrap.dedent(
                """
                import pytest

                print("conftest_loaded")

                @pytest.fixture
                def fixture():
                    print("fixture_used")
                """
            ),
        }
    )

    # Should fail because conftest cannot be found from the link structure.
    result = testdir.runpytest("-vs", "symlinktests")
    result.stdout.fnmatch_lines(["*fixture 'fixture' not found*"])
    assert result.ret == ExitCode.TESTS_FAILED

    # Should not cause "ValueError: Plugin already registered" (#4174).
    result = testdir.runpytest("-vs", "symlink")
    assert result.ret == ExitCode.OK


def test_conftest_symlink_files(testdir):
    """Symlinked conftest.py are found when pytest is executed in a directory with symlinked
    files."""
    real = testdir.tmpdir.mkdir("real")
    source = {
        "app/test_foo.py": "def test1(fixture): pass",
        "app/__init__.py": "",
        "app/conftest.py": textwrap.dedent(
            """
            import pytest

            print("conftest_loaded")

            @pytest.fixture
            def fixture():
                print("fixture_used")
            """
        ),
    }
    testdir.makepyfile(**{"real/%s" % k: v for k, v in source.items()})

    # Create a build directory that contains symlinks to actual files
    # but doesn't symlink actual directories.
    build = testdir.tmpdir.mkdir("build")
    build.mkdir("app")
    for f in source:
        symlink_or_skip(real.join(f), build.join(f))
    build.chdir()
    result = testdir.runpytest("-vs", "app/test_foo.py")
    result.stdout.fnmatch_lines(["*conftest_loaded*", "PASSED"])
    assert result.ret == ExitCode.OK


@pytest.mark.skipif(
    os.path.normcase("x") != os.path.normcase("X"),
    reason="only relevant for case insensitive file systems",
)
def test_conftest_badcase(testdir):
    """Check conftest.py loading when directory casing is wrong (#5792)."""
    testdir.tmpdir.mkdir("JenkinsRoot").mkdir("test")
    source = {"setup.py": "", "test/__init__.py": "", "test/conftest.py": ""}
    testdir.makepyfile(**{"JenkinsRoot/%s" % k: v for k, v in source.items()})

    testdir.tmpdir.join("jenkinsroot/test").chdir()
    result = testdir.runpytest()
    assert result.ret == ExitCode.NO_TESTS_COLLECTED


def test_conftest_uppercase(testdir):
    """Check conftest.py whose qualified name contains uppercase characters (#5819)"""
    source = {"__init__.py": "", "Foo/conftest.py": "", "Foo/__init__.py": ""}
    testdir.makepyfile(**source)

    testdir.tmpdir.chdir()
    result = testdir.runpytest()
    assert result.ret == ExitCode.NO_TESTS_COLLECTED


def test_no_conftest(testdir):
    testdir.makeconftest("assert 0")
    result = testdir.runpytest("--noconftest")
    assert result.ret == ExitCode.NO_TESTS_COLLECTED

    result = testdir.runpytest()
    assert result.ret == ExitCode.USAGE_ERROR


def test_conftest_existing_junitxml(testdir):
    x = testdir.mkdir("tests")
    x.join("conftest.py").write(
        textwrap.dedent(
            """\
            def pytest_addoption(parser):
                parser.addoption("--xyz", action="store_true")
            """
        )
    )
    testdir.makefile(ext=".xml", junit="")  # Writes junit.xml
    result = testdir.runpytest("-h", "--junitxml", "junit.xml")
    result.stdout.fnmatch_lines(["*--xyz*"])


def test_conftest_import_order(testdir, monkeypatch):
    ct1 = testdir.makeconftest("")
    sub = testdir.mkdir("sub")
    ct2 = sub.join("conftest.py")
    ct2.write("")

    def impct(p, importmode):
        return p

    conftest = PytestPluginManager()
    conftest._confcutdir = testdir.tmpdir
    monkeypatch.setattr(conftest, "_importconftest", impct)
    assert conftest._getconftestmodules(sub, importmode="prepend") == [ct1, ct2]


def test_fixture_dependency(testdir):
    ct1 = testdir.makeconftest("")
    ct1 = testdir.makepyfile("__init__.py")
    ct1.write("")
    sub = testdir.mkdir("sub")
    sub.join("__init__.py").write("")
    sub.join("conftest.py").write(
        textwrap.dedent(
            """\
            import pytest

            @pytest.fixture
            def not_needed():
                assert False, "Should not be called!"

            @pytest.fixture
            def foo():
                assert False, "Should not be called!"

            @pytest.fixture
            def bar(foo):
                return 'bar'
            """
        )
    )
    subsub = sub.mkdir("subsub")
    subsub.join("__init__.py").write("")
    subsub.join("test_bar.py").write(
        textwrap.dedent(
            """\
            import pytest

            @pytest.fixture
            def bar():
                return 'sub bar'

            def test_event_fixture(bar):
                assert bar == 'sub bar'
            """
        )
    )
    result = testdir.runpytest("sub")
    result.stdout.fnmatch_lines(["*1 passed*"])


def test_conftest_found_with_double_dash(testdir):
    sub = testdir.mkdir("sub")
    sub.join("conftest.py").write(
        textwrap.dedent(
            """\
            def pytest_addoption(parser):
                parser.addoption("--hello-world", action="store_true")
            """
        )
    )
    p = sub.join("test_hello.py")
    p.write("def test_hello(): pass")
    result = testdir.runpytest(str(p) + "::test_hello", "-h")
    result.stdout.fnmatch_lines(
        """
        *--hello-world*
    """
    )


class TestConftestVisibility:
    def _setup_tree(self, testdir):  # for issue616
        # example mostly taken from:
        # https://mail.python.org/pipermail/pytest-dev/2014-September/002617.html
        runner = testdir.mkdir("empty")
        package = testdir.mkdir("package")

        package.join("conftest.py").write(
            textwrap.dedent(
                """\
                import pytest
                @pytest.fixture
                def fxtr():
                    return "from-package"
                """
            )
        )
        package.join("test_pkgroot.py").write(
            textwrap.dedent(
                """\
                def test_pkgroot(fxtr):
                    assert fxtr == "from-package"
                """
            )
        )

        swc = package.mkdir("swc")
        swc.join("__init__.py").ensure()
        swc.join("conftest.py").write(
            textwrap.dedent(
                """\
                import pytest
                @pytest.fixture
                def fxtr():
                    return "from-swc"
                """
            )
        )
        swc.join("test_with_conftest.py").write(
            textwrap.dedent(
                """\
                def test_with_conftest(fxtr):
                    assert fxtr == "from-swc"
                """
            )
        )

        snc = package.mkdir("snc")
        snc.join("__init__.py").ensure()
        snc.join("test_no_conftest.py").write(
            textwrap.dedent(
                """\
                def test_no_conftest(fxtr):
                    assert fxtr == "from-package"   # No local conftest.py, so should
                                                    # use value from parent dir's
                """
            )
        )
        print("created directory structure:")
        tmppath = Path(str(testdir.tmpdir))
        for x in tmppath.rglob(""):
            print("   " + str(x.relative_to(tmppath)))

        return {"runner": runner, "package": package, "swc": swc, "snc": snc}

    # N.B.: "swc" stands for "subdir with conftest.py"
    #       "snc" stands for "subdir no [i.e. without] conftest.py"
    @pytest.mark.parametrize(
        "chdir,testarg,expect_ntests_passed",
        [
            # Effective target: package/..
            ("runner", "..", 3),
            ("package", "..", 3),
            ("swc", "../..", 3),
            ("snc", "../..", 3),
            # Effective target: package
            ("runner", "../package", 3),
            ("package", ".", 3),
            ("swc", "..", 3),
            ("snc", "..", 3),
            # Effective target: package/swc
            ("runner", "../package/swc", 1),
            ("package", "./swc", 1),
            ("swc", ".", 1),
            ("snc", "../swc", 1),
            # Effective target: package/snc
            ("runner", "../package/snc", 1),
            ("package", "./snc", 1),
            ("swc", "../snc", 1),
            ("snc", ".", 1),
        ],
    )
    def test_parsefactories_relative_node_ids(
        self, testdir, chdir, testarg, expect_ntests_passed
    ):
        """#616"""
        dirs = self._setup_tree(testdir)
        print("pytest run in cwd: %s" % (dirs[chdir].relto(testdir.tmpdir)))
        print("pytestarg        : %s" % (testarg))
        print("expected pass    : %s" % (expect_ntests_passed))
        with dirs[chdir].as_cwd():
            reprec = testdir.inline_run(testarg, "-q", "--traceconfig")
            reprec.assertoutcome(passed=expect_ntests_passed)


@pytest.mark.parametrize(
    "confcutdir,passed,error", [(".", 2, 0), ("src", 1, 1), (None, 1, 1)]
)
def test_search_conftest_up_to_inifile(testdir, confcutdir, passed, error):
    """Test that conftest files are detected only up to an ini file, unless
    an explicit --confcutdir option is given.
    """
    root = testdir.tmpdir
    src = root.join("src").ensure(dir=1)
    src.join("pytest.ini").write("[pytest]")
    src.join("conftest.py").write(
        textwrap.dedent(
            """\
            import pytest
            @pytest.fixture
            def fix1(): pass
            """
        )
    )
    src.join("test_foo.py").write(
        textwrap.dedent(
            """\
            def test_1(fix1):
                pass
            def test_2(out_of_reach):
                pass
            """
        )
    )
    root.join("conftest.py").write(
        textwrap.dedent(
            """\
            import pytest
            @pytest.fixture
            def out_of_reach(): pass
            """
        )
    )

    args = [str(src)]
    if confcutdir:
        args = ["--confcutdir=%s" % root.join(confcutdir)]
    result = testdir.runpytest(*args)
    match = ""
    if passed:
        match += "*%d passed*" % passed
    if error:
        match += "*%d error*" % error
    result.stdout.fnmatch_lines(match)


def test_issue1073_conftest_special_objects(testdir):
    testdir.makeconftest(
        """\
        class DontTouchMe(object):
            def __getattr__(self, x):
                raise Exception('cant touch me')

        x = DontTouchMe()
        """
    )
    testdir.makepyfile(
        """\
        def test_some():
            pass
        """
    )
    res = testdir.runpytest()
    assert res.ret == 0


def test_conftest_exception_handling(testdir):
    testdir.makeconftest(
        """\
        raise ValueError()
        """
    )
    testdir.makepyfile(
        """\
        def test_some():
            pass
        """
    )
    res = testdir.runpytest()
    assert res.ret == 4
    assert "raise ValueError()" in [line.strip() for line in res.errlines]


def test_hook_proxy(testdir):
    """Session's gethookproxy() would cache conftests incorrectly (#2016).
    It was decided to remove the cache altogether.
    """
    testdir.makepyfile(
        **{
            "root/demo-0/test_foo1.py": "def test1(): pass",
            "root/demo-a/test_foo2.py": "def test1(): pass",
            "root/demo-a/conftest.py": """\
            def pytest_ignore_collect(path, config):
                return True
            """,
            "root/demo-b/test_foo3.py": "def test1(): pass",
            "root/demo-c/test_foo4.py": "def test1(): pass",
        }
    )
    result = testdir.runpytest()
    result.stdout.fnmatch_lines(
        ["*test_foo1.py*", "*test_foo3.py*", "*test_foo4.py*", "*3 passed*"]
    )


def test_required_option_help(testdir):
    testdir.makeconftest("assert 0")
    x = testdir.mkdir("x")
    x.join("conftest.py").write(
        textwrap.dedent(
            """\
            def pytest_addoption(parser):
                parser.addoption("--xyz", action="store_true", required=True)
            """
        )
    )
    result = testdir.runpytest("-h", x)
    result.stdout.no_fnmatch_line("*argument --xyz is required*")
    assert "general:" in result.stdout.str()