comparison tests/hghave.py @ 19930:b8316878a685

hghave: add "absimport" feature to check "absolute_import" in __future__

This patch adds "absimport" feature to check whether "absolute_import"
exists in __future__, which means supporting module loading by
absolute name.

This check is needed for portability of test code using
"absolute_import", because Python earlier than 2.5 doesn't support it.

19929:ab2362e1672e

def has_msys():
    return os.getenv('MSYSTEM')

def has_aix():
    return sys.platform.startswith("aix")

checks = {
    "true": (lambda: True, "yak shaving"),
    "false": (lambda: False, "nail clipper"),
    "baz": (has_baz, "GNU Arch baz client"),

    "tla": (has_tla, "GNU Arch tla client"),
    "unix-permissions": (has_unix_permissions, "unix-style permissions"),
    "windows": (has_windows, "Windows"),
    "msys": (has_msys, "Windows with MSYS"),
    "aix": (has_aix, "AIX"),
}

19930:b8316878a685

def has_msys():
    return os.getenv('MSYSTEM')

def has_aix():
    return sys.platform.startswith("aix")

def has_absimport():
    import __future__
    from mercurial import util
    return util.safehasattr(__future__, "absolute_import")

checks = {
    "true": (lambda: True, "yak shaving"),
    "false": (lambda: False, "nail clipper"),
    "baz": (has_baz, "GNU Arch baz client"),

    "tla": (has_tla, "GNU Arch tla client"),
    "unix-permissions": (has_unix_permissions, "unix-style permissions"),
    "windows": (has_windows, "Windows"),
    "msys": (has_msys, "Windows with MSYS"),
    "aix": (has_aix, "AIX"),
    "absimport": (has_absimport, "absolute_import in __future__"),
}