test_semver.py

import subprocess
import sys
from pathlib import Path

from abxpkg.semver import SemVer, bin_version, is_semver_str, semver_to_str


class TestSemVer:
    def test_bin_version_reads_live_python_version_with_custom_args(self):
        version = bin_version(Path(sys.executable), args=("-V",))

        assert version is not None
        assert version == SemVer("{}.{}.{}".format(*sys.version_info[:3]))

    def test_parse_reads_exact_live_bash_banner_version(self):
        bash_version_output = subprocess.check_output(
            ["bash", "--version"],
            text=True,
        )
        first_line = bash_version_output.splitlines()[0].strip()

        parsed = SemVer.parse(bash_version_output)

        assert parsed is not None
        assert parsed == SemVer(first_line)
        assert parsed.full_text == first_line

    def test_parse_falls_back_across_multiline_banners_up_to_five_lines(self):
        multiline_output = "\n".join(
            [
                "ShellCheck - shell script analysis tool",
                "version: v0.11.0-65-gcd41f79",
                "license: GNU General Public License, version 3",
                "website: https://www.shellcheck.net",
            ],
        )

        parsed = SemVer.parse(multiline_output)

        assert parsed == SemVer("0.11.0")
        assert parsed is not None
        assert parsed.full_text == "version: v0.11.0-65-gcd41f79"

    def test_parse_stops_after_five_lines(self):
        multiline_output = "\n".join(
            [
                "line 1",
                "line 2",
                "line 3",
                "line 4",
                "line 5",
                "version: 1.2.3",
            ],
        )

        assert SemVer.parse(multiline_output) is None

    def test_parse_handles_public_edge_cases(self):
        newer_version = SemVer.parse("24.0.0")
        older_version = SemVer.parse("23.1.0")

        assert newer_version is not None
        assert older_version is not None
        assert SemVer.parse(b"v1.2.3") == SemVer("1.2.3")
        assert SemVer.parse("") is None
        assert SemVer.parse("1.2.3.4") == SemVer("1.2.3")
        assert SemVer.parse("Google Chrome 124.0.6367.208") == SemVer("124.0.6367")
        assert SemVer.parse("2024.04.09") == SemVer("2024.4.9")
        assert SemVer(("1", "2", "3")) == SemVer("1.2.3")
        assert SemVer.parse("Google Chrome") is None
        assert newer_version > older_version

    def test_semver_string_helpers_accept_real_public_inputs(self):
        assert is_semver_str("1.2.3")
        assert not is_semver_str("v1.2.3")
        assert semver_to_str((1, 2, 3)) == "1.2.3"
        assert semver_to_str("4.5.6") == "4.5.6"