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"""Tests for distutils.command.build_clib."""

import os
from distutils.command.build_clib import build_clib
from distutils.errors import DistutilsSetupError
from distutils.tests import missing_compiler_executable, support

import pytest


class TestBuildCLib(support.TempdirManager):
    def test_check_library_dist(self):
        pkg_dir, dist = self.create_dist()
        cmd = build_clib(dist)

        # 'libraries' option must be a list
        with pytest.raises(DistutilsSetupError):
            cmd.check_library_list('foo')

        # each element of 'libraries' must a 2-tuple
        with pytest.raises(DistutilsSetupError):
            cmd.check_library_list(['foo1', 'foo2'])

        # first element of each tuple in 'libraries'
        # must be a string (the library name)
        with pytest.raises(DistutilsSetupError):
            cmd.check_library_list([(1, 'foo1'), ('name', 'foo2')])

        # library name may not contain directory separators
        with pytest.raises(DistutilsSetupError):
            cmd.check_library_list(
                [('name', 'foo1'), ('another/name', 'foo2')],
            )

        # second element of each tuple must be a dictionary (build info)
        with pytest.raises(DistutilsSetupError):
            cmd.check_library_list(
                [('name', {}), ('another', 'foo2')],
            )

        # those work
        libs = [('name', {}), ('name', {'ok': 'good'})]
        cmd.check_library_list(libs)

    def test_get_source_files(self):
        pkg_dir, dist = self.create_dist()
        cmd = build_clib(dist)

        # "in 'libraries' option 'sources' must be present and must be
        # a list of source filenames
        cmd.libraries = [('name', {})]
        with pytest.raises(DistutilsSetupError):
            cmd.get_source_files()

        cmd.libraries = [('name', {'sources': 1})]
        with pytest.raises(DistutilsSetupError):
            cmd.get_source_files()

        cmd.libraries = [('name', {'sources': ['a', 'b']})]
        assert cmd.get_source_files() == ['a', 'b']

        cmd.libraries = [('name', {'sources': ('a', 'b')})]
        assert cmd.get_source_files() == ['a', 'b']

        cmd.libraries = [
            ('name', {'sources': ('a', 'b')}),
            ('name2', {'sources': ['c', 'd']}),
        ]
        assert cmd.get_source_files() == ['a', 'b', 'c', 'd']

    def test_build_libraries(self):
        pkg_dir, dist = self.create_dist()
        cmd = build_clib(dist)

        class FakeCompiler:
            def compile(*args, **kw):
                pass

            create_static_lib = compile

        cmd.compiler = FakeCompiler()

        # build_libraries is also doing a bit of typo checking
        lib = [('name', {'sources': 'notvalid'})]
        with pytest.raises(DistutilsSetupError):
            cmd.build_libraries(lib)

        lib = [('name', {'sources': list()})]
        cmd.build_libraries(lib)

        lib = [('name', {'sources': tuple()})]
        cmd.build_libraries(lib)

    def test_finalize_options(self):
        pkg_dir, dist = self.create_dist()
        cmd = build_clib(dist)

        cmd.include_dirs = 'one-dir'
        cmd.finalize_options()
        assert cmd.include_dirs == ['one-dir']

        cmd.include_dirs = None
        cmd.finalize_options()
        assert cmd.include_dirs == []

        cmd.distribution.libraries = 'WONTWORK'
        with pytest.raises(DistutilsSetupError):
            cmd.finalize_options()

    @pytest.mark.skipif('platform.system() == "Windows"')
    def test_run(self):
        pkg_dir, dist = self.create_dist()
        cmd = build_clib(dist)

        foo_c = os.path.join(pkg_dir, 'foo.c')
        self.write_file(foo_c, 'int main(void) { return 1;}\n')
        cmd.libraries = [('foo', {'sources': [foo_c]})]

        build_temp = os.path.join(pkg_dir, 'build')
        os.mkdir(build_temp)
        cmd.build_temp = build_temp
        cmd.build_clib = build_temp

        # Before we run the command, we want to make sure
        # all commands are present on the system.
        ccmd = missing_compiler_executable()
        if ccmd is not None:
            self.skipTest(f'The {ccmd!r} command is not found')

        # this should work
        cmd.run()

        # let's check the result
        assert 'libfoo.a' in os.listdir(build_temp)