import io
import sys
import zlib

import pytest

from webob import cookies
from webob.request import BaseRequest, Request
from webob.response import Response
from webob.util import bytes_, text_


def setup_module(module):
    cookies._should_raise = True


def teardown_module(module):
    cookies._should_raise = False


def simple_app(environ, start_response):
    start_response("200 OK", [("Content-Type", "text/html; charset=UTF-8")])

    return ["OK"]


def test_response():
    req = BaseRequest.blank("/")
    res = req.get_response(simple_app)
    assert res.status == "200 OK"
    assert res.status_code == 200
    assert res.body == "OK"
    assert res.charset == "UTF-8"
    assert res.content_type == "text/html"
    res.status = 404
    assert res.status == "404 Not Found"
    assert res.status_code == 404
    res.body = b"Not OK"
    assert b"".join(res.app_iter) == b"Not OK"
    res.charset = "iso8859-1"
    assert "text/html; charset=iso8859-1" == res.headers["content-type"]
    res.content_type = "text/xml"
    assert "text/xml; charset=UTF-8" == res.headers["content-type"]
    res.content_type = "text/xml; charset=UTF-8"
    assert "text/xml; charset=UTF-8" == res.headers["content-type"]
    res.headers = {"content-type": "text/html"}
    assert res.headers["content-type"] == "text/html"
    assert res.headerlist == [("content-type", "text/html")]
    res.set_cookie("x", "y")
    assert res.headers["set-cookie"].strip(";") == "x=y; Path=/"
    res.set_cookie(text_("x"), text_("y"))
    assert res.headers["set-cookie"].strip(";") == "x=y; Path=/"
    res = Response("a body", "200 OK", content_type="text/html")
    res.encode_content()
    assert res.content_encoding == "gzip"
    assert (
        res.body
        == b"\x1f\x8b\x08\x00\x00\x00\x00\x00\x02\xffKTH\xcaO\xa9\x04\x00\xf6\x86GI\x06\x00\x00\x00"
    )
    res.decode_content()
    assert res.content_encoding is None
    assert res.body == b"a body"
    res.set_cookie("x", text_(b"foo"))  # test unicode value
    with pytest.raises(TypeError):
        Response(app_iter=iter(["a"]), body="somebody")
    del req.environ
    with pytest.raises(TypeError):
        Response(charset=None, content_type="image/jpeg", body=text_(b"unicode body"))
    with pytest.raises(TypeError):
        Response(wrong_key="dummy")
    with pytest.raises(TypeError):
        resp = Response()
        resp.body = text_(b"unicode body")


def test_set_response_status_binary():
    req = BaseRequest.blank("/")
    res = req.get_response(simple_app)
    res.status == b"200 OK"
    assert res.status_code == 200
    assert res.status == "200 OK"


def test_set_response_status_str_no_reason():
    req = BaseRequest.blank("/")
    res = req.get_response(simple_app)
    res.status = "200"
    assert res.status_code == 200
    assert res.status == "200 OK"


def test_set_response_status_str_generic_reason():
    req = BaseRequest.blank("/")
    res = req.get_response(simple_app)
    res.status = "299"
    assert res.status_code == 299
    assert res.status == "299 Success"


def test_set_response_status_code():
    req = BaseRequest.blank("/")
    res = req.get_response(simple_app)
    res.status_code = 200
    assert res.status_code == 200
    assert res.status == "200 OK"


def test_set_response_status_bad():
    req = BaseRequest.blank("/")
    res = req.get_response(simple_app)

    def status_test():
        res.status = "ThisShouldFail"

    with pytest.raises(ValueError):
        status_test()


def test_set_response_status_code_generic_reason():
    req = BaseRequest.blank("/")
    res = req.get_response(simple_app)
    res.status_code = 299
    assert res.status_code == 299
    assert res.status == "299 Success"


def test_content_type():
    r = Response()
    # default ctype and charset
    assert r.content_type == "text/html"
    assert r.charset == "UTF-8"
    # setting to none, removes the header
    r.content_type = None
    assert r.content_type is None
    assert r.charset is None
    # can set missing ctype
    r.content_type = None
    assert r.content_type is None


def test_init_content_type_w_charset():
    v = "text/plain;charset=ISO-8859-1"
    assert Response(content_type=v).headers["content-type"] == v


def test_init_adds_default_charset_when_not_json():
    content_type = "text/plain"
    expected = "text/plain; charset=UTF-8"
    assert Response(content_type=content_type).headers["content-type"] == expected


def test_init_no_charset_when_json():
    content_type = "application/json"
    expected = content_type
    assert Response(content_type=content_type).headers["content-type"] == expected


def test_init_keeps_specified_charset_when_json():
    content_type = "application/json; charset=ISO-8859-1"
    expected = content_type
    assert Response(content_type=content_type).headers["content-type"] == expected


def test_init_doesnt_add_default_content_type_with_bodyless_status():
    assert Response(status="204 No Content").content_type is None


def test_content_type_supports_unicode():
    content_type = "text/html"
    resp = Response()
    resp.content_type = content_type
    assert isinstance(resp.headers["Content-Type"], str)


@pytest.mark.skipif("sys.version_info < (3, 0)")
def test_content_type_not_binary():
    content_type = b"text/html"
    resp = Response()

    with pytest.raises(TypeError):
        resp.content_type = content_type


def test_cookies():
    res = Response()
    # test unicode value
    res.set_cookie("x", "test")
    # utf8 encoded
    assert res.headers.getall("set-cookie") == ["x=test; Path=/"]
    r2 = res.merge_cookies(simple_app)
    r2 = BaseRequest.blank("/").get_response(r2)
    assert r2.headerlist == [
        ("Content-Type", "text/html; charset=UTF-8"),
        ("Set-Cookie", "x=test; Path=/"),
    ]


def test_unicode_cookies_error_raised():
    res = Response()
    with pytest.raises(ValueError):
        Response.set_cookie(res, "x", text_(b"\\N{BLACK SQUARE}", "unicode_escape"))


def test_unicode_cookies_warning_issued():
    import warnings

    cookies._should_raise = False

    with warnings.catch_warnings(record=True) as w:
        # Cause all warnings to always be triggered.
        warnings.simplefilter("always")
        # Trigger a warning.

        res = Response()
        res.set_cookie("x", text_(b"\\N{BLACK SQUARE}", "unicode_escape"))

        assert len(w) == 1
        assert issubclass(w[-1].category, RuntimeWarning) is True
        assert "ValueError" in str(w[-1].message)

    cookies._should_raise = True


def test_cookies_raises_typeerror():
    res = Response()
    with pytest.raises(TypeError):
        res.set_cookie()


def test_http_only_cookie():
    req = Request.blank("/")
    res = req.get_response(Response("blah"))
    res.set_cookie("foo", "foo", httponly=True)
    assert res.headers["set-cookie"] == "foo=foo; Path=/; HttpOnly"


def test_headers():
    r = Response()
    tval = "application/x-test"
    r.headers.update({"content-type": tval})
    assert r.headers.getall("content-type") == [tval]
    r.headers.clear()
    assert not r.headerlist


def test_response_copy():
    r = Response(app_iter=iter(["a"]))
    r2 = r.copy()
    assert r.body == "a"
    assert r2.body == "a"


def test_response_copy_content_md5():
    res = Response()
    res.md5_etag(set_content_md5=True)
    assert res.content_md5
    res2 = res.copy()
    assert res.content_md5
    assert res2.content_md5
    assert res.content_md5 == res2.content_md5


def test_HEAD_closes():
    req = Request.blank("/")
    req.method = "HEAD"
    app_iter = io.BytesIO(b"foo")
    res = req.get_response(Response(app_iter=app_iter))
    assert res.status_code == 200
    assert res.body == b""
    assert app_iter.closed


def test_HEAD_conditional_response_returns_empty_response():
    req = Request.blank("/", method="HEAD", if_none_match="none")
    res = Response(conditional_response=True)

    def start_response(status, headerlist):
        pass

    result = res(req.environ, start_response)
    assert not list(result)


def test_HEAD_conditional_response_range_empty_response():
    req = Request.blank("/", method="HEAD", range=(4, 5))
    res = Response("Are we not men?", conditional_response=True)
    assert req.get_response(res).body == b""


def test_conditional_response_if_none_match_false():
    req = Request.blank("/", if_none_match="foo")
    resp = Response(app_iter=["foo\n"], conditional_response=True, etag="bar")
    resp = req.get_response(resp)
    assert resp.status_code == 200


def test_conditional_response_if_none_match_true():
    req = Request.blank("/", if_none_match="foo")
    resp = Response(app_iter=["foo\n"], conditional_response=True, etag="foo")
    resp = req.get_response(resp)
    assert resp.status_code == 304


def test_conditional_response_if_none_match_weak():
    req = Request.blank("/", headers={"if-none-match": '"bar"'})
    req_weak = Request.blank("/", headers={"if-none-match": 'W/"bar"'})
    resp = Response(app_iter=["foo\n"], conditional_response=True, etag="bar")
    resp_weak = Response(
        app_iter=["foo\n"], conditional_response=True, headers={"etag": 'W/"bar"'}
    )

    for rq in [req, req_weak]:
        for rp in [resp, resp_weak]:
            rq.get_response(rp).status_code == 304

    r2 = Response(
        app_iter=["foo\n"], conditional_response=True, headers={"etag": '"foo"'}
    )
    r2_weak = Response(
        app_iter=["foo\n"], conditional_response=True, headers={"etag": 'W/"foo"'}
    )
    req_weak.get_response(r2).status_code == 200
    req.get_response(r2_weak) == 200


def test_conditional_response_if_modified_since_false():
    from datetime import datetime, timedelta

    req = Request.blank("/", if_modified_since=datetime(2011, 3, 17, 13, 0, 0))
    resp = Response(
        app_iter=["foo\n"],
        conditional_response=True,
        last_modified=req.if_modified_since - timedelta(seconds=1),
    )
    resp = req.get_response(resp)
    assert resp.status_code == 304


def test_conditional_response_if_modified_since_true():
    from datetime import datetime, timedelta

    req = Request.blank("/", if_modified_since=datetime(2011, 3, 17, 13, 0, 0))
    resp = Response(
        app_iter=["foo\n"],
        conditional_response=True,
        last_modified=req.if_modified_since + timedelta(seconds=1),
    )
    resp = req.get_response(resp)
    assert resp.status_code == 200


def test_conditional_response_range_not_satisfiable_response():
    req = Request.blank("/", range="bytes=100-200")
    resp = Response(app_iter=["foo\n"], content_length=4, conditional_response=True)
    resp = req.get_response(resp)
    assert resp.status_code == 416
    assert resp.content_range.start is None
    assert resp.content_range.stop is None
    assert resp.content_range.length == 4
    assert resp.body == b"Requested range not satisfiable: bytes=100-200"


def test_HEAD_conditional_response_range_not_satisfiable_response():
    req = Request.blank("/", method="HEAD", range="bytes=100-200")
    resp = Response(app_iter=["foo\n"], content_length=4, conditional_response=True)
    resp = req.get_response(resp)
    assert resp.status_code == 416
    assert resp.content_range.start is None
    assert resp.content_range.stop is None
    assert resp.content_range.length == 4
    assert resp.body == b""


def test_md5_etag():
    res = Response()
    res.body = b"""\
In A.D. 2101
War was beginning.
Captain: What happen ?
Mechanic: Somebody set up us the bomb.
Operator: We get signal.
Captain: What !
Operator: Main screen turn on.
Captain: It's You !!
Cats: How are you gentlemen !!
Cats: All your base are belong to us.
Cats: You are on the way to destruction.
Captain: What you say !!
Cats: You have no chance to survive make your time.
Cats: HA HA HA HA ....
Captain: Take off every 'zig' !!
Captain: You know what you doing.
Captain: Move 'zig'.
Captain: For great justice."""
    res.md5_etag()
    assert res.etag
    assert "\n" not in res.etag
    assert res.etag == "pN8sSTUrEaPRzmurGptqmw"
    assert res.content_md5 is None


def test_md5_etag_set_content_md5():
    res = Response()
    body = b"The quick brown fox jumps over the lazy dog"
    res.md5_etag(body, set_content_md5=True)
    assert res.content_md5 == "nhB9nTcrtoJr2B01QqQZ1g=="


def test_decode_content_defaults_to_identity():
    res = Response()
    res.body = b"There be dragons"
    res.decode_content()
    assert res.body == b"There be dragons"


def test_decode_content_with_deflate():
    res = Response()
    body = b"Hey Hey Hey"
    # Simulate inflate by chopping the headers off
    # the gzip encoded data
    res.body = zlib.compress(body)[2:-4]
    res.content_encoding = "deflate"
    res.decode_content()
    assert res.body == body
    assert res.content_encoding is None


def test_decode_content_with_deflate_and_zlib_header():
    res = Response()
    body = b"Hey Hey Hey"
    # don't chop off the zlib container
    # https://tools.ietf.org/html/rfc7230#section-4.2.2 says
    # that chopping it exists but is non-conformant
    res.body = zlib.compress(body)
    res.content_encoding = "deflate"
    res.decode_content()
    assert res.body == body
    assert res.content_encoding is None


def test_content_length():
    r0 = Response("x" * 10, content_length=10)

    req_head = Request.blank("/", method="HEAD")
    r1 = req_head.get_response(r0)
    assert r1.status_code == 200
    assert r1.body == b""
    assert r1.content_length == 10

    req_get = Request.blank("/")
    r2 = req_get.get_response(r0)
    assert r2.status_code == 200
    assert r2.body == b"x" * 10
    assert r2.content_length == 10

    r3 = Response(app_iter=[b"x"] * 10)
    assert r3.content_length is None
    assert r3.body == b"x" * 10
    assert r3.content_length == 10

    r4 = Response(app_iter=[b"x"] * 10, content_length=20)  # wrong content_length
    assert r4.content_length == 20
    with pytest.raises(AssertionError):
        r4.body

    req_range = Request.blank("/", range=(0, 5))
    r0.conditional_response = True
    r5 = req_range.get_response(r0)
    assert r5.status_code == 206
    assert r5.body == b"xxxxx"
    assert r5.content_length == 5


def test_app_iter_range():
    req = Request.blank("/", range=(2, 5))

    for app_iter in [
        [b"012345"],
        [b"0", b"12345"],
        [b"0", b"1234", b"5"],
        [b"01", b"2345"],
        [b"01", b"234", b"5"],
        [b"012", b"34", b"5"],
        [b"012", b"3", b"4", b"5"],
        [b"012", b"3", b"45"],
        [b"0", b"12", b"34", b"5"],
        [b"0", b"12", b"345"],
    ]:
        r = Response(app_iter=app_iter, content_length=6, conditional_response=True)
        res = req.get_response(r)
        assert list(res.content_range) == [2, 5, 6]
        assert res.body, b"234"


def test_app_iter_range_inner_method():
    class FakeAppIter:
        def app_iter_range(self, start, stop):
            return "you win", start, stop

    res = Response(app_iter=FakeAppIter())
    assert res.app_iter_range(30, 40), ("you win", 30 == 40)


def test_has_body():
    empty = Response()
    assert not empty.has_body

    with_list = Response(app_iter=["1"])
    assert with_list.has_body

    with_empty_list = Response(app_iter=[b""])
    assert not with_empty_list.has_body

    with_body = Response(body="Seomthing")
    assert with_body.has_body

    with_none_app_iter = Response(app_iter=None)
    assert not with_none_app_iter.has_body

    with_none_body = Response(body=None)
    assert not with_none_body.has_body

    # key feature: has_body should not read app_iter
    app_iter = iter(["1", "2"])
    not_iterating = Response(app_iter=app_iter)
    assert not_iterating.has_body
    assert next(app_iter) == "1"

    # messed with private attribute but method should nonetheless not
    # return True
    messing_with_privates = Response()
    messing_with_privates._app_iter = None
    assert not messing_with_privates.has_body


def test_str_crlf():
    res = Response("test")
    assert "\r\n" in str(res)


def test_from_file():
    res = Response("test")
    inp = io.BytesIO(bytes_(str(res)))
    equal_resp(res, inp)


def test_from_file2():
    res = Response(app_iter=iter([b"test ", b"body"]), content_type="text/plain")
    inp = io.BytesIO(bytes_(str(res)))
    equal_resp(res, inp)


def test_from_text_file():
    res = Response("test")
    inp = io.StringIO(text_(str(res), "utf-8"))
    equal_resp(res, inp)
    res = Response(app_iter=iter([b"test ", b"body"]), content_type="text/plain")
    inp = io.StringIO(text_(str(res), "utf-8"))
    equal_resp(res, inp)


def equal_resp(res, inp):
    res2 = Response.from_file(inp)
    assert res.body == res2.body
    assert res.headers == res2.headers


def test_from_file_w_leading_space_in_header():
    # Make sure the removal of code dealing with leading spaces is safe
    res1 = Response()
    file_w_space = io.BytesIO(b"200 OK\n\tContent-Type: text/html; charset=UTF-8")
    res2 = Response.from_file(file_w_space)
    assert res1.headers == res2.headers


def test_file_bad_header():
    file_w_bh = io.BytesIO(b"200 OK\nBad Header")
    with pytest.raises(ValueError):
        Response.from_file(file_w_bh)


def test_from_file_not_unicode_headers():
    inp = io.BytesIO(b"200 OK\n\tContent-Type: text/html; charset=UTF-8")
    res = Response.from_file(inp)
    assert res.headerlist[0][0].__class__ == str


def test_file_with_http_version():
    inp = io.BytesIO(b"HTTP/1.1 200 OK\r\n\r\nSome data...")

    res = Response.from_file(inp)
    assert res.status_code == 200
    assert res.status == "200 OK"


def test_file_with_http_version_more_status():
    inp = io.BytesIO(b"HTTP/1.1 404 Not Found\r\n\r\nSome data...")

    res = Response.from_file(inp)
    assert res.status_code == 404
    assert res.status == "404 Not Found"


def test_set_status():
    res = Response()
    res.status = "200"
    assert res.status == "200 OK"
    with pytest.raises(TypeError):
        setattr(res, "status", (200,))


def test_set_headerlist():
    res = Response()
    # looks like a list
    res.headerlist = (("Content-Type", "text/html; charset=UTF-8"),)
    assert res.headerlist == [("Content-Type", "text/html; charset=UTF-8")]

    # has items
    res.headerlist = {"Content-Type": "text/html; charset=UTF-8"}
    assert res.headerlist == [("Content-Type", "text/html; charset=UTF-8")]

    del res.headerlist
    assert res.headerlist == []


def test_request_uri_no_script_name():
    from webob.response import _request_uri

    environ = {"wsgi.url_scheme": "http", "HTTP_HOST": "test.com"}
    assert _request_uri(environ) == "http://test.com/"


def test_request_uri_https():
    from webob.response import _request_uri

    environ = {
        "wsgi.url_scheme": "https",
        "SERVER_NAME": "test.com",
        "SERVER_PORT": "443",
        "SCRIPT_NAME": "/foobar",
    }
    assert _request_uri(environ) == "https://test.com/foobar"


def test_app_iter_range_starts_after_iter_end():
    from webob.response import AppIterRange

    range = AppIterRange(iter([]), start=1, stop=1)
    assert list(range) == []


def test_resp_write_app_iter_non_list():
    res = Response(app_iter=(b"a", b"b"))
    assert res.content_length is None
    assert res.write(b"c") == 1
    assert res.body == b"abc"
    assert res.content_length == 3


def test_response_file_body_writelines():
    from webob.response import ResponseBodyFile

    res = Response(app_iter=[b"foo"])
    rbo = ResponseBodyFile(res)
    rbo.writelines(["bar", "baz"])
    assert res.app_iter == [b"foo", b"bar", b"baz"]
    rbo.flush()  # noop
    assert res.app_iter, [b"foo", b"bar", b"baz"]


@pytest.mark.xfail(
    sys.version_info >= (3, 6),
    reason="Python 3.6 and up requires that rbo is seekable.",
)
def test_response_file_body_tell():
    import zipfile

    from webob.response import ResponseBodyFile

    rbo = ResponseBodyFile(Response())
    assert rbo.tell() == 0
    writer = zipfile.ZipFile(rbo, "w")
    writer.writestr("zinfo_or_arcname", b"foo")
    writer.close()
    assert rbo.tell() == 133


def test_response_file_body_tell_text():
    from webob.response import ResponseBodyFile

    rbo = ResponseBodyFile(Response())
    assert rbo.tell() == 0
    assert rbo.write("123456789") == 9
    assert rbo.tell() == 9


def test_response_write_non_str():
    res = Response()
    with pytest.raises(TypeError):
        res.write(object())


def test_response_file_body_write_empty_app_iter():
    res = Response("foo")
    assert res.write("baz") == 3
    assert res.app_iter == [b"foo", b"baz"]


def test_response_file_body_write_empty_body():
    res = Response("")
    assert res.write("baz") == 3
    assert res.app_iter == [b"", b"baz"]


def test_response_file_body_close_not_implemented():
    rbo = Response().body_file
    with pytest.raises(NotImplementedError):
        rbo.close()


def test_response_file_body_repr():
    rbo = Response().body_file
    rbo.response = "yo"
    assert repr(rbo) == "<body_file for 'yo'>"


def test_body_get_is_none():
    res = Response()
    res._app_iter = None
    with pytest.raises(TypeError):
        Response(app_iter=iter(["a"]), body="somebody")
    with pytest.raises(AttributeError):
        res.__getattribute__("body")


def test_body_get_is_unicode_notverylong():
    res = Response(app_iter=(text_(b"foo"),))
    with pytest.raises(TypeError):
        res.__getattribute__("body")


def test_body_get_is_unicode():
    res = Response(app_iter=(["x"] * 51 + [text_(b"x")]))
    with pytest.raises(TypeError):
        res.__getattribute__("body")


def test_body_set_not_unicode_or_str():
    res = Response()
    with pytest.raises(TypeError):
        res.__setattr__("body", object())


def test_body_set_unicode():
    res = Response()
    with pytest.raises(TypeError):
        res.__setattr__("body", text_(b"abc"))


def test_body_set_under_body_doesnt_exist():
    res = Response("abc")
    assert res.body == b"abc"
    assert res.content_length == 3


def test_body_del():
    res = Response("123")
    del res.body
    assert res.body == b""
    assert res.content_length == 0


def test_text_get_no_charset():
    res = Response(charset=None)
    assert "" == res.text


def test_text_get_no_default_body_encoding():
    res = Response(charset=None)
    res.default_body_encoding = None
    with pytest.raises(AttributeError):
        assert "" == res.text


def test_unicode_body():
    res = Response()
    res.charset = "utf-8"
    bbody = b"La Pe\xc3\xb1a"  # binary string
    ubody = text_(bbody, "utf-8")  # unicode string
    res.body = bbody
    assert res.unicode_body == ubody
    res.ubody = ubody
    assert res.body == bbody
    del res.ubody
    assert res.body == b""


def test_text_get_decode():
    res = Response()
    res.charset = "utf-8"
    res.body = b"La Pe\xc3\xb1a"
    assert res.text, text_(b"La Pe\xc3\xb1a")


def test_text_set_no_charset():
    res = Response()
    res.charset = None
    res.text = text_("abc")
    assert res.text == "abc"


def test_text_set_no_default_body_encoding():
    res = Response()
    res.charset = None
    res.default_body_encoding = None
    with pytest.raises(AttributeError):
        res.text = text_("abc")


def test_text_set_not_unicode():
    res = Response()
    res.charset = "utf-8"
    with pytest.raises(TypeError):
        res.__setattr__("text", b"La Pe\xc3\xb1a")


def test_text_del():
    res = Response("123")
    del res.text
    assert res.body == b""
    assert res.content_length == 0


def test_body_file_del():
    res = Response()
    res.body = b"123"
    assert res.content_length == 3
    assert res.app_iter == [b"123"]
    del res.body_file
    assert res.body == b""
    assert res.content_length == 0


def test_write_unicode():
    res = Response()
    res.text = text_(b"La Pe\xc3\xb1a", "utf-8")
    assert res.write(text_(b"a")) == 1
    assert res.text, text_(b"La Pe\xc3\xb1aa" == "utf-8")


def test_write_unicode_no_charset():
    res = Response(charset=None)
    with pytest.raises(TypeError):
        res.write(text_(b"a"))


def test_write_text():
    res = Response()
    res.body = b"abc"
    assert res.write(text_(b"a")) == 1
    assert res.text == "abca"


def test_app_iter_del():
    res = Response(content_length=3, app_iter=["123"])
    del res.app_iter
    assert res.body == b""
    assert res.content_length is None


def test_charset_set_no_content_type_header():
    res = Response()
    res.headers.pop("Content-Type", None)
    with pytest.raises(AttributeError):
        res.charset = "utf-8"


def test_charset_del_no_content_type_header():
    res = Response()
    res.headers.pop("Content-Type", None)
    assert res._charset__del() is None


def test_content_type_params_get_no_semicolon_in_content_type_header():
    res = Response()
    res.headers["Content-Type"] = "foo"
    assert res.content_type_params == {}


def test_content_type_params_get_semicolon_in_content_type_header():
    res = Response()
    res.headers["Content-Type"] = "foo;encoding=utf-8"
    assert res.content_type_params == {"encoding": "utf-8"}


def test_content_type_params_set_value_dict_empty():
    res = Response()
    res.headers["Content-Type"] = "foo;bar"
    res.content_type_params = None
    assert res.headers["Content-Type"] == "foo"


def test_content_type_params_set_ok_param_quoting():
    res = Response()
    res.content_type_params = {"a": ""}
    assert res.headers["Content-Type"] == 'text/html; a=""'


def test_charset_delete():
    res = Response()
    del res.charset
    assert res.charset is None


def test_set_cookie_overwrite():
    res = Response()
    res.set_cookie("a", "1")
    res.set_cookie("a", "2", overwrite=True)
    assert res.headerlist[-1] == ("Set-Cookie", "a=2; Path=/")


def test_set_cookie_value_is_None():
    res = Response()
    res.set_cookie("a", None)
    assert res.headerlist[-1][0] == "Set-Cookie"
    val = [x.strip() for x in res.headerlist[-1][1].split(";")]
    assert len(val) == 4
    val.sort()
    assert val[0] == "Max-Age=0"
    assert val[1] == "Path=/"
    assert val[2] == "a="
    assert val[3].startswith("expires")


def test_set_cookie_expires_is_None_and_max_age_is_int():
    res = Response()
    res.set_cookie("a", "1", max_age=100)
    assert res.headerlist[-1][0] == "Set-Cookie"
    val = [x.strip() for x in res.headerlist[-1][1].split(";")]
    assert len(val) == 4
    val.sort()
    assert val[0] == "Max-Age=100"
    assert val[1] == "Path=/"
    assert val[2] == "a=1"
    assert val[3].startswith("expires")


def test_set_cookie_expires_is_None_and_max_age_is_timedelta():
    from datetime import timedelta

    res = Response()
    res.set_cookie("a", "1", max_age=timedelta(seconds=100))
    assert res.headerlist[-1][0] == "Set-Cookie"
    val = [x.strip() for x in res.headerlist[-1][1].split(";")]
    assert len(val) == 4
    val.sort()
    assert val[0] == "Max-Age=100"
    assert val[1] == "Path=/"
    assert val[2] == "a=1"
    assert val[3].startswith("expires")


def test_delete_cookie():
    res = Response()
    res.headers["Set-Cookie"] = "a=2; Path=/"
    res.delete_cookie("a")
    assert res.headerlist[-1][0] == "Set-Cookie"
    val = [x.strip() for x in res.headerlist[-1][1].split(";")]
    assert len(val) == 4
    val.sort()
    assert val[0] == "Max-Age=0"
    assert val[1] == "Path=/"
    assert val[2] == "a="
    assert val[3].startswith("expires")


def test_delete_cookie_with_path():
    res = Response()
    res.headers["Set-Cookie"] = "a=2; Path=/"
    res.delete_cookie("a", path="/abc")
    assert res.headerlist[-1][0] == "Set-Cookie"
    val = [x.strip() for x in res.headerlist[-1][1].split(";")]
    assert len(val) == 4
    val.sort()
    assert val[0] == "Max-Age=0"
    assert val[1] == "Path=/abc"
    assert val[2] == "a="
    assert val[3].startswith("expires")


def test_delete_cookie_with_domain():
    res = Response()
    res.headers["Set-Cookie"] = "a=2; Path=/"
    res.delete_cookie("a", path="/abc", domain="example.com")
    assert res.headerlist[-1][0] == "Set-Cookie"
    val = [x.strip() for x in res.headerlist[-1][1].split(";")]
    assert len(val) == 5
    val.sort()
    assert val[0] == "Domain=example.com"
    assert val[1] == "Max-Age=0"
    assert val[2] == "Path=/abc"
    assert val[3] == "a="
    assert val[4].startswith("expires")


def test_unset_cookie_not_existing_and_not_strict():
    res = Response()
    res.unset_cookie("a", strict=False)  # no exception


def test_unset_cookie_not_existing_and_strict():
    res = Response()
    with pytest.raises(KeyError):
        res.unset_cookie("a")


def test_unset_cookie_key_in_cookies():
    res = Response()
    res.headers.add("Set-Cookie", "a=2; Path=/")
    res.headers.add("Set-Cookie", "b=3; Path=/")
    res.unset_cookie("a")
    assert res.headers.getall("Set-Cookie") == ["b=3; Path=/"]
    res.unset_cookie(text_("b"))
    assert res.headers.getall("Set-Cookie") == []


def test_merge_cookies_no_set_cookie():
    res = Response()
    result = res.merge_cookies("abc")
    assert result == "abc"


def test_merge_cookies_resp_is_Response():
    inner_res = Response()
    res = Response()
    res.set_cookie("a", "1")
    result = res.merge_cookies(inner_res)
    assert result.headers.getall("Set-Cookie") == ["a=1; Path=/"]


def test_merge_cookies_resp_is_wsgi_callable():
    L = []

    def dummy_wsgi_callable(environ, start_response):
        L.append((environ, start_response))

        return "abc"

    res = Response()
    res.set_cookie("a", "1")
    wsgiapp = res.merge_cookies(dummy_wsgi_callable)
    environ = {}

    def dummy_start_response(status, headers, exc_info=None):
        assert headers, [("Set-Cookie" == "a=1; Path=/")]

    result = wsgiapp(environ, dummy_start_response)
    assert result == "abc"
    assert len(L) == 1
    L[0][1]("200 OK", [])  # invoke dummy_start_response assertion


def test_body_get_body_is_None_len_app_iter_is_zero():
    res = Response()
    res._app_iter = io.BytesIO()
    res._body = None
    result = res.body
    assert result == b""


def test_cache_control_get():
    res = Response()
    assert repr(res.cache_control) == "<CacheControl ''>"
    assert res.cache_control.max_age is None


def test_location():
    res = Response()
    res.status = "301"
    res.location = "/test.html"
    assert res.location == "/test.html"
    req = Request.blank("/")
    assert req.get_response(res).location == "http://localhost/test.html"
    res.location = "/test2.html"
    assert req.get_response(res).location == "http://localhost/test2.html"


@pytest.mark.xfail(
    sys.version_info < (3, 0),
    reason="Python 2.x unicode != str, WSGI requires str. Test "
    "added due to https://github.com/Pylons/webob/issues/247. "
    "PEP3333 requires environ variables are str, Django messes "
    "with the environ and changes it from str to unicode.",
)
def test_location_unicode():
    environ = {
        "REQUEST_METHOD": "GET",
        "wsgi.url_scheme": "http",
        "HTTP_HOST": "test.com",
    }
    res = Response()
    res.status = "301"
    res.location = "/test.html"

    def start_response(status, headerlist):
        for (header, val) in headerlist:
            if header.lower() == "location":
                assert val == "http://test.com/test.html"
                assert isinstance(val, str)

    res(environ, start_response)


def test_request_uri_http():
    # covers webob/response.py:1152
    from webob.response import _request_uri

    environ = {
        "wsgi.url_scheme": "http",
        "SERVER_NAME": "test.com",
        "SERVER_PORT": "80",
        "SCRIPT_NAME": "/foobar",
    }
    assert _request_uri(environ) == "http://test.com/foobar"


def test_request_uri_no_script_name2():
    # covers webob/response.py:1160
    # There is a test_request_uri_no_script_name in test_response.py, but it
    # sets SCRIPT_NAME.
    from webob.response import _request_uri

    environ = {
        "wsgi.url_scheme": "http",
        "HTTP_HOST": "test.com",
        "PATH_INFO": "/foobar",
    }
    assert _request_uri(environ) == "http://test.com/foobar"


def test_cache_control_object_max_age_ten():
    res = Response()
    res.cache_control.max_age = 10
    assert repr(res.cache_control) == "<CacheControl 'max-age=10'>"
    assert res.headers["cache-control"] == "max-age=10"


def test_cache_control_set_object_error():
    res = Response()
    with pytest.raises(AttributeError):
        setattr(res.cache_control, "max_stale", 10)


def test_cache_expires_set():
    res = Response()
    res.cache_expires = True
    assert (
        repr(res.cache_control)
        == "<CacheControl 'max-age=0, must-revalidate, no-cache, no-store'>"
    )


def test_status_code_set():
    res = Response()
    res.status_code = 400
    assert res._status == "400 Bad Request"
    res.status_int = 404
    assert res._status == "404 Not Found"


def test_cache_control_set_dict():
    res = Response()
    res.cache_control = {"a": "b"}
    assert repr(res.cache_control) == "<CacheControl 'a=b'>"


def test_cache_control_set_None():
    res = Response()
    res.cache_control = None
    assert repr(res.cache_control) == "<CacheControl ''>"


def test_cache_control_set_unicode():
    res = Response()
    res.cache_control = text_(b"abc")
    assert repr(res.cache_control) == "<CacheControl 'abc'>"


def test_cache_control_set_control_obj_is_not_None():
    class DummyCacheControl:
        def __init__(self):
            self.header_value = 1
            self.properties = {"bleh": 1}

    res = Response()
    res._cache_control_obj = DummyCacheControl()
    res.cache_control = {}
    assert res.cache_control.properties == {}


def test_cache_control_del():
    res = Response()
    del res.cache_control
    assert repr(res.cache_control) == "<CacheControl ''>"


def test_body_file_get():
    res = Response()
    result = res.body_file
    from webob.response import ResponseBodyFile

    assert result.__class__ == ResponseBodyFile


def test_body_file_write_no_charset():
    res = Response
    with pytest.raises(TypeError):
        res.write(text_("foo"))


def test_body_file_write_unicode_encodes():
    s = text_(b"La Pe\xc3\xb1a", "utf-8")
    res = Response()
    assert res.write(s) == 8
    assert res.app_iter, [b"" == b"La Pe\xc3\xb1a"]


def test_repr():
    res = Response()
    assert repr(res).endswith("200 OK>")


def test_cache_expires_set_timedelta():
    res = Response()
    from datetime import timedelta

    delta = timedelta(seconds=60)
    res.cache_expires(seconds=delta)
    assert res.cache_control.max_age == 60


def test_cache_expires_set_int():
    res = Response()
    res.cache_expires(seconds=60)
    assert res.cache_control.max_age == 60


def test_cache_expires_set_None():
    res = Response()
    res.cache_expires(seconds=None, a=1)
    assert res.cache_control.a == 1


def test_cache_expires_set_zero():
    res = Response()
    res.cache_expires(seconds=0)
    assert res.cache_control.no_store is True
    assert res.cache_control.no_cache == "*"
    assert res.cache_control.must_revalidate is True
    assert res.cache_control.max_age == 0
    assert res.cache_control.post_check == 0


def test_encode_content_unknown():
    res = Response()
    with pytest.raises(AssertionError):
        res.encode_content("badencoding")


def test_encode_content_identity():
    res = Response()
    result = res.encode_content("identity")
    assert result is None


def test_encode_content_gzip_already_gzipped():
    res = Response()
    res.content_encoding = "gzip"
    result = res.encode_content("gzip")
    assert result is None


def test_encode_content_gzip_notyet_gzipped():
    res = Response()
    res.app_iter = io.BytesIO(b"foo")
    result = res.encode_content("gzip")
    assert result is None
    assert res.content_length == 23
    assert res.app_iter == [
        b"\x1f\x8b\x08\x00\x00\x00\x00\x00\x02\xff",
        b"K\xcb\xcf\x07\x00",
        b"!es\x8c\x03\x00\x00\x00",
    ]


def test_encode_content_gzip_notyet_gzipped_lazy():
    res = Response()
    res.app_iter = io.BytesIO(b"foo")
    result = res.encode_content("gzip", lazy=True)
    assert result is None
    assert res.content_length is None
    assert list(res.app_iter) == [
        b"\x1f\x8b\x08\x00\x00\x00\x00\x00\x02\xff",
        b"K\xcb\xcf\x07\x00",
        b"!es\x8c\x03\x00\x00\x00",
    ]


def test_encode_content_gzip_buffer_coverage():
    # this test is to provide 100% coverage of
    # Response.encode_content was necessary in order to get
    # request https://github.com/Pylons/webob/pull/85 into upstream
    res = Response()
    DATA = b"abcdefghijklmnopqrstuvwxyz0123456789" * 1000000
    res.app_iter = io.BytesIO(DATA)
    res.encode_content("gzip")
    result = list(res.app_iter)
    assert len(b"".join(result)) < len(DATA)


def test_decode_content_identity():
    res = Response()
    res.content_encoding = "identity"
    result = res.decode_content()
    assert result is None


def test_decode_content_weird():
    res = Response()
    res.content_encoding = "weird"
    with pytest.raises(ValueError):
        res.decode_content()


def test_decode_content_gzip():
    from gzip import GzipFile

    io_ = io.BytesIO()
    gzip_f = GzipFile(filename="", mode="w", fileobj=io_)
    gzip_f.write(b"abc")
    gzip_f.close()
    body = io_.getvalue()
    res = Response()
    res.content_encoding = "gzip"
    res.body = body
    res.decode_content()
    assert res.body == b"abc"


def test__make_location_absolute_has_scheme_only():
    result = Response._make_location_absolute(
        {"wsgi.url_scheme": "http", "HTTP_HOST": "example.com:80"}, "http:"
    )
    assert result == "http:"


def test__make_location_absolute_path():
    result = Response._make_location_absolute(
        {"wsgi.url_scheme": "http", "HTTP_HOST": "example.com:80"}, "/abc"
    )
    assert result == "http://example.com/abc"


def test__make_location_absolute_already_absolute():
    result = Response._make_location_absolute(
        {"wsgi.url_scheme": "http", "HTTP_HOST": "example.com:80"},
        "https://funcptr.net/",
    )
    assert result == "https://funcptr.net/"


def test_response_set_body_file1():
    data = b"abc"
    file = io.BytesIO(data)
    r = Response(body_file=file)
    assert r.body == data


def test_response_set_body_file2():
    data = b"abcdef" * 1024
    file = io.BytesIO(data)
    r = Response(body_file=file)
    assert r.body == data


def test_response_json_body():
    r = Response(json_body={"a": 1})
    assert r.body == b'{"a":1}', repr(r.body)
    assert r.content_type == "application/json"
    r = Response()
    r.json_body = {"b": 1}
    assert r.content_type == "text/html"
    del r.json_body
    assert r.body == b""


def test_cache_expires_set_zero_then_nonzero():
    res = Response()
    res.cache_expires(seconds=0)
    res.cache_expires(seconds=1)
    assert res.pragma is None
    assert not res.cache_control.no_cache
    assert not res.cache_control.no_store
    assert not res.cache_control.must_revalidate
    assert res.cache_control.max_age == 1


def test_default_content_type():
    class NoDefault(Response):
        default_content_type = None

    res = NoDefault()
    assert res.content_type is None


def test_default_charset():
    class DefaultCharset(Response):
        default_charset = "UTF-16"

    res = DefaultCharset()
    assert res.content_type == "text/html"
    assert res.charset == "UTF-16"
    assert res.headers["Content-Type"] == "text/html; charset=UTF-16"


def test_header_list_no_defaults():
    res = Response(headerlist=[])
    assert res.headerlist == [("Content-Length", "0")]
    assert res.content_type is None
    assert res.charset is None
    assert res.body == b""


def test_204_has_no_body():
    res = Response(status="204 No Content")
    assert res.body == b""
    assert res.content_length is None
    assert res.headerlist == []


def test_204_app_iter_set():
    res = Response(status="204", app_iter=[b"test"])

    # You are on your own in this case... you set app_iter you bought it
    assert res.body == b"test"
    assert res.content_length is None
    assert res.headerlist == []


def test_explicit_charset():
    res = Response(charset="UTF-16")
    assert res.content_type == "text/html"
    assert res.charset == "UTF-16"


def test_set_content_type():
    res = Response(content_type="application/json")
    res.content_type = "application/foo"
    assert res.content_type == "application/foo"


def test_raises_no_charset():
    with pytest.raises(TypeError):
        Response(content_type="image/jpeg", body=text_(b"test"))


def test_raises_none_charset():
    with pytest.raises(TypeError):
        Response(content_type="image/jpeg", body=text_(b"test"), charset=None)


def test_doesnt_raise_with_charset_content_type_has_no_charset():
    res = Response(content_type="image/jpeg", body=text_(b"test"), charset="utf-8")
    assert res.body == b"test"
    assert res.content_type == "image/jpeg"
    assert res.charset is None


def test_content_type_has_charset():
    res = Response(content_type="application/foo; charset=UTF-8", body=text_(b"test"))
    assert res.body == b"test"
    assert res.content_type == "application/foo"
    assert res.charset == "UTF-8"
    assert res.headers["Content-Type"] == "application/foo; charset=UTF-8"


def test_app_iter_is_same():
    class app_iter:
        pass

    my_app_iter = app_iter()

    res = Response(status=204, app_iter=my_app_iter)
    assert res.app_iter == my_app_iter
    assert isinstance(res.app_iter, app_iter)