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import json
import sys
from functools import partial
from textwrap import dedent

import pytest
from pkgcheck import base, reporters
from pkgcheck.checks import codingstyle, git, metadata, metadata_xml, pkgdir, profiles
from pkgcore.test.misc import FakePkg
from snakeoil.formatters import PlainTextFormatter


class BaseReporter:

    reporter_cls = reporters.Reporter

    @pytest.fixture(autouse=True)
    def _setup(self):
        self.log_warning = profiles.ProfileWarning(Exception("profile warning"))
        self.log_error = profiles.ProfileError(Exception("profile error"))
        pkg = FakePkg("dev-libs/foo-0")
        self.commit_result = git.InvalidCommitMessage("no commit message", commit="8d86269bb4c7")
        self.category_result = metadata_xml.CatMissingMetadataXml("metadata.xml", pkg=pkg)
        self.package_result = pkgdir.InvalidPN(("bar", "baz"), pkg=pkg)
        self.versioned_result = metadata.BadFilename(("0.tar.gz", "foo.tar.gz"), pkg=pkg)
        self.line_result = codingstyle.ReadonlyVariable("P", line="P=6", lineno=7, pkg=pkg)
        self.lines_result = codingstyle.EbuildUnquotedVariable("D", lines=(5, 7), pkg=pkg)

    def mk_reporter(self, **kwargs):
        out = PlainTextFormatter(sys.stdout)
        return self.reporter_cls(out, **kwargs)

    add_report_output = None

    def test_add_report(self, capsys):
        with self.mk_reporter() as reporter:
            reporter.report(self.commit_result)
            reporter.report(self.log_warning)
            reporter.report(self.category_result)
            reporter.report(self.package_result)
            reporter.report(self.versioned_result)
            reporter.report(self.line_result)
            reporter.report(self.lines_result)
        out, err = capsys.readouterr()
        assert not err
        assert out == self.add_report_output


class TestStrReporter(BaseReporter):

    reporter_cls = reporters.StrReporter
    add_report_output = dedent(
        """\
            commit 8d86269bb4c7: no commit message
            profile warning
            dev-libs: category is missing metadata.xml
            dev-libs/foo: invalid package names: [ bar, baz ]
            dev-libs/foo-0: bad filenames: [ 0.tar.gz, foo.tar.gz ]
            dev-libs/foo-0: read-only variable 'P' assigned, line 7: P=6
            dev-libs/foo-0: unquoted variable D on lines: 5, 7
        """
    )


class TestFancyReporter(BaseReporter):

    reporter_cls = reporters.FancyReporter
    add_report_output = dedent(
        """\
            commit
              InvalidCommitMessage: commit 8d86269bb4c7: no commit message

            profiles
              ProfileWarning: profile warning

            dev-libs
              CatMissingMetadataXml: category is missing metadata.xml

            dev-libs/foo
              InvalidPN: invalid package names: [ bar, baz ]
              BadFilename: version 0: bad filenames: [ 0.tar.gz, foo.tar.gz ]
              ReadonlyVariable: version 0: read-only variable 'P' assigned, line 7: P=6
              UnquotedVariable: version 0: unquoted variable D on lines: 5, 7
        """
    )


class TestJsonReporter(BaseReporter):

    reporter_cls = reporters.JsonReporter
    add_report_output = dedent(
        """\
            {"_style": {"InvalidCommitMessage": "commit 8d86269bb4c7: no commit message"}}
            {"_warning": {"ProfileWarning": "profile warning"}}
            {"dev-libs": {"_error": {"CatMissingMetadataXml": "category is missing metadata.xml"}}}
            {"dev-libs": {"foo": {"_error": {"InvalidPN": "invalid package names: [ bar, baz ]"}}}}
            {"dev-libs": {"foo": {"0": {"_warning": {"BadFilename": "bad filenames: [ 0.tar.gz, foo.tar.gz ]"}}}}}
            {"dev-libs": {"foo": {"0": {"_warning": {"ReadonlyVariable": "read-only variable 'P' assigned, line 7: P=6"}}}}}
            {"dev-libs": {"foo": {"0": {"_warning": {"UnquotedVariable": "unquoted variable D on lines: 5, 7"}}}}}
        """
    )


class TestXmlReporter(BaseReporter):

    reporter_cls = reporters.XmlReporter
    add_report_output = dedent(
        """\
            <checks>
            <result><class>InvalidCommitMessage</class><msg>commit 8d86269bb4c7: no commit message</msg></result>
            <result><class>ProfileWarning</class><msg>profile warning</msg></result>
            <result><category>dev-libs</category><class>CatMissingMetadataXml</class><msg>category is missing metadata.xml</msg></result>
            <result><category>dev-libs</category><package>foo</package><class>InvalidPN</class><msg>invalid package names: [ bar, baz ]</msg></result>
            <result><category>dev-libs</category><package>foo</package><version>0</version><class>BadFilename</class><msg>bad filenames: [ 0.tar.gz, foo.tar.gz ]</msg></result>
            <result><category>dev-libs</category><package>foo</package><version>0</version><class>ReadonlyVariable</class><msg>read-only variable 'P' assigned, line 7: P=6</msg></result>
            <result><category>dev-libs</category><package>foo</package><version>0</version><class>UnquotedVariable</class><msg>unquoted variable D on lines: 5, 7</msg></result>
            </checks>
        """
    )


class TestCsvReporter(BaseReporter):

    reporter_cls = reporters.CsvReporter
    add_report_output = dedent(
        """\
            ,,,commit 8d86269bb4c7: no commit message
            ,,,profile warning
            dev-libs,,,category is missing metadata.xml
            dev-libs,foo,,"invalid package names: [ bar, baz ]"
            dev-libs,foo,0,"bad filenames: [ 0.tar.gz, foo.tar.gz ]"
            dev-libs,foo,0,"read-only variable 'P' assigned, line 7: P=6"
            dev-libs,foo,0,"unquoted variable D on lines: 5, 7"
        """
    )


class TestFormatReporter(BaseReporter):

    reporter_cls = partial(reporters.FormatReporter, "")

    def test_add_report(self, capsys):
        for format_str, expected in (
            ("r", "r\n" * 7),
            ("{category}", "dev-libs\n" * 5),
            ("{category}/{package}", "/\n/\ndev-libs/\n" + "dev-libs/foo\n" * 4),
            (
                "{category}/{package}-{version}",
                "/-\n/-\ndev-libs/-\ndev-libs/foo-\n" + "dev-libs/foo-0\n" * 3,
            ),
            (
                "{name}",
                "InvalidCommitMessage\nProfileWarning\nCatMissingMetadataXml\nInvalidPN\nBadFilename\nReadonlyVariable\nUnquotedVariable\n",
            ),
            ("{foo}", ""),
        ):
            self.reporter_cls = partial(reporters.FormatReporter, format_str)
            self.add_report_output = expected
            super().test_add_report(capsys)

    def test_unsupported_index(self, capsys):
        self.reporter_cls = partial(reporters.FormatReporter, "{0}")
        with self.mk_reporter() as reporter:
            with pytest.raises(base.PkgcheckUserException) as excinfo:
                reporter.report(self.versioned_result)
            assert "integer indexes are not supported" in str(excinfo.value)


class TestJsonStream(BaseReporter):

    reporter_cls = reporters.JsonStream

    def test_add_report(self, capsys):
        with self.mk_reporter() as reporter:
            for result in (
                self.log_warning,
                self.log_error,
                self.commit_result,
                self.category_result,
                self.package_result,
                self.versioned_result,
            ):
                reporter.report(result)
                out, err = capsys.readouterr()
                assert not err
                deserialized_result = next(reporter.from_iter([out]))
                assert str(deserialized_result) == str(result)

    def test_deserialize_error(self):
        with self.mk_reporter() as reporter:
            # deserializing non-result objects raises exception
            obj = reporter.to_json(["result"])
            with pytest.raises(reporters.DeserializationError, match="failed loading"):
                next(reporter.from_iter([obj]))

            # deserializing mangled JSON result objects raises exception
            obj = reporter.to_json(self.versioned_result)
            del obj["__class__"]
            json_obj = json.dumps(obj)
            with pytest.raises(reporters.DeserializationError, match="unknown result"):
                next(reporter.from_iter([json_obj]))


class TestFlycheckReporter(BaseReporter):

    reporter_cls = reporters.FlycheckReporter
    add_report_output = dedent(
        """\
            -.ebuild:0:style:InvalidCommitMessage: commit 8d86269bb4c7: no commit message
            -.ebuild:0:warning:ProfileWarning: profile warning
            -.ebuild:0:error:CatMissingMetadataXml: category is missing metadata.xml
            foo-.ebuild:0:error:InvalidPN: invalid package names: [ bar, baz ]
            foo-0.ebuild:0:warning:BadFilename: bad filenames: [ 0.tar.gz, foo.tar.gz ]
            foo-0.ebuild:7:warning:ReadonlyVariable: read-only variable 'P' assigned, line 7: P=6
            foo-0.ebuild:5:warning:UnquotedVariable: unquoted variable D
            foo-0.ebuild:7:warning:UnquotedVariable: unquoted variable D
        """
    )