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# Pylint doesn't play well with fixtures and dependency injection from pytest
# pylint: disable=redefined-outer-name

import os

import pytest

from buildstream import _yaml
from buildstream._exceptions import ErrorDomain, LoadErrorReason
from buildstream.plugintestutils.runcli import cli  # pylint: disable=unused-import

from tests.testutils import override_platform_uname

# Project directory
DATA_DIR = os.path.dirname(os.path.realpath(__file__))


@pytest.mark.datafiles(DATA_DIR)
@pytest.mark.parametrize("machine,value,expected", [
    # Test explicitly provided arches
    ('arm', 'aarch32', 'Army'),
    ('arm', 'aarch64', 'Aarchy'),

    # Test automatically derived arches
    ('arm', None, 'Army'),
    ('aarch64', None, 'Aarchy'),

    # Test that explicitly provided arches dont error out
    # when the `uname` reported arch is not supported
    ('i386', 'aarch32', 'Army'),
    ('x86_64', 'aarch64', 'Aarchy'),
])
def test_conditional(cli, datafiles, machine, value, expected):
    with override_platform_uname(machine=machine):
        project = os.path.join(datafiles.dirname, datafiles.basename, 'option-arch')

        bst_args = []
        if value is not None:
            bst_args += ['--option', 'machine_arch', value]

        bst_args += [
            'show',
            '--deps', 'none',
            '--format', '%{vars}',
            'element.bst'
        ]
        result = cli.run(project=project, silent=True, args=bst_args)
        result.assert_success()

        loaded = _yaml.load_data(result.output)
        assert _yaml.node_get(loaded, str, 'result') == expected


@pytest.mark.datafiles(DATA_DIR)
def test_unsupported_arch(cli, datafiles):

    with override_platform_uname(machine="x86_64"):
        project = os.path.join(datafiles.dirname, datafiles.basename, 'option-arch')
        result = cli.run(project=project, silent=True, args=[
            'show',
            '--deps', 'none',
            '--format', '%{vars}',
            'element.bst'
        ])

        result.assert_main_error(ErrorDomain.LOAD, LoadErrorReason.INVALID_DATA)


@pytest.mark.datafiles(DATA_DIR)
def test_alias(cli, datafiles):

    with override_platform_uname(machine="arm"):
        project = os.path.join(datafiles.dirname, datafiles.basename, 'option-arch-alias')
        result = cli.run(project=project, silent=True, args=[
            'show',
            '--deps', 'none',
            '--format', '%{vars}',
            'element.bst'
        ])

        result.assert_success()


@pytest.mark.datafiles(DATA_DIR)
def test_unknown_host_arch(cli, datafiles):

    with override_platform_uname(machine="x86_128"):
        project = os.path.join(datafiles.dirname, datafiles.basename, 'option-arch')
        result = cli.run(project=project, silent=True, args=[
            'show',
            '--deps', 'none',
            '--format', '%{vars}',
            'element.bst'
        ])

        result.assert_main_error(ErrorDomain.PLATFORM, None)


@pytest.mark.datafiles(DATA_DIR)
def test_unknown_project_arch(cli, datafiles):

    project = os.path.join(datafiles.dirname, datafiles.basename, 'option-arch-unknown')
    result = cli.run(project=project, silent=True, args=[
        'show',
        '--deps', 'none',
        '--format', '%{vars}',
        'element.bst'
    ])

    result.assert_main_error(ErrorDomain.LOAD, LoadErrorReason.INVALID_DATA)