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import flask
import flask_babel as babel
from flask_babel import gettext, lazy_gettext, lazy_ngettext, ngettext, get_babel
def test_basics():
app = flask.Flask(__name__)
babel.Babel(app, default_locale="de_DE")
with app.test_request_context():
assert gettext("Hello %(name)s!", name="Peter") == "Hallo Peter!"
assert ngettext("%(num)s Apple", "%(num)s Apples", 3) == "3 Äpfel"
assert ngettext("%(num)s Apple", "%(num)s Apples", 1) == "1 Apfel"
def test_template_basics():
app = flask.Flask(__name__)
babel.Babel(app, default_locale="de_DE")
def t(x):
return flask.render_template_string("{{ %s }}" % x)
with app.test_request_context():
assert t("gettext('Hello %(name)s!', name='Peter')") == "Hallo Peter!"
assert t("ngettext('%(num)s Apple', '%(num)s Apples', 3)") == "3 Äpfel"
assert t("ngettext('%(num)s Apple', '%(num)s Apples', 1)") == "1 Apfel"
assert (
flask.render_template_string(
"""
{% trans %}Hello {{ name }}!{% endtrans %}
""",
name="Peter",
).strip()
== "Hallo Peter!"
)
assert (
flask.render_template_string(
"""
{% trans num=3 %}{{ num }} Apple
{%- pluralize %}{{ num }} Apples{% endtrans %}
""",
name="Peter",
).strip()
== "3 Äpfel"
)
def test_lazy_gettext():
app = flask.Flask(__name__)
babel.Babel(app, default_locale="de_DE")
yes = lazy_gettext("Yes")
with app.test_request_context():
assert str(yes) == "Ja"
assert yes.__html__() == "Ja"
get_babel(app).default_locale = "en_US"
with app.test_request_context():
assert str(yes) == "Yes"
assert yes.__html__() == "Yes"
def test_lazy_ngettext():
app = flask.Flask(__name__)
babel.Babel(app, default_locale="de_DE")
one_apple = lazy_ngettext("%(num)s Apple", "%(num)s Apples", 1)
with app.test_request_context():
assert str(one_apple) == "1 Apfel"
assert one_apple.__html__() == "1 Apfel"
two_apples = lazy_ngettext("%(num)s Apple", "%(num)s Apples", 2)
with app.test_request_context():
assert str(two_apples) == "2 Äpfel"
assert two_apples.__html__() == "2 Äpfel"
def test_lazy_gettext_defaultdomain():
app = flask.Flask(__name__)
babel.Babel(app, default_locale="de_DE", default_domain="test")
first = lazy_gettext("first")
with app.test_request_context():
assert str(first) == "erste"
get_babel(app).default_locale = "en_US"
with app.test_request_context():
assert str(first) == "first"
def test_list_translations():
app = flask.Flask(__name__)
b = babel.Babel(app, default_locale="de_DE")
with app.app_context():
translations = sorted(b.list_translations(), key=str)
assert len(translations) == 3
assert str(translations[0]) == "de"
assert str(translations[1]) == "de_DE"
assert str(translations[2]) == "ja"
def test_list_translations_default_locale_exists():
app = flask.Flask(__name__)
b = babel.Babel(app, default_locale="de")
with app.app_context():
translations = sorted(b.list_translations(), key=str)
assert len(translations) == 2
assert str(translations[0]) == "de"
assert str(translations[1]) == "ja"
def test_no_formatting():
"""
Ensure we don't format strings unless a variable is passed.
"""
app = flask.Flask(__name__)
babel.Babel(app)
with app.test_request_context():
assert gettext("Test %s") == "Test %s"
assert gettext("Test %(name)s", name="test") == "Test test"
assert gettext("Test %s") % "test" == "Test test"
def test_domain():
app = flask.Flask(__name__)
b = babel.Babel(app, default_locale="de_DE")
domain = babel.Domain(domain="test")
with app.test_request_context():
assert domain.gettext("first") == "erste"
assert babel.gettext("first") == "first"
def test_as_default():
app = flask.Flask(__name__)
b = babel.Babel(app, default_locale="de_DE")
domain = babel.Domain(domain="test")
with app.test_request_context():
assert babel.gettext("first") == "first"
domain.as_default()
assert babel.gettext("first") == "erste"
def test_default_domain():
app = flask.Flask(__name__)
b = babel.Babel(app, default_locale="de_DE", default_domain="test")
with app.test_request_context():
assert babel.gettext("first") == "erste"
def test_multiple_apps():
app1 = flask.Flask(__name__)
b1 = babel.Babel(app1, default_locale="de_DE")
app2 = flask.Flask(__name__)
b2 = babel.Babel(app2, default_locale="de_DE")
with app1.test_request_context() as ctx:
assert babel.gettext("Yes") == "Ja"
assert ("de_DE", "messages") in b1.domain_instance.get_translations_cache(ctx)
with app2.test_request_context() as ctx:
assert "de_DE", "messages" not in b2.domain_instance.get_translations_cache(ctx)
def test_cache(mocker):
load_mock = mocker.patch(
"babel.support.Translations.load", side_effect=babel.support.Translations.load
)
app = flask.Flask(__name__)
b = babel.Babel(app, default_locale="de_DE", locale_selector=lambda: the_locale)
# first request, should load en_US
the_locale = "en_US"
with app.test_request_context() as ctx:
assert b.domain_instance.get_translations_cache(ctx) == {}
assert babel.gettext("Yes") == "Yes"
assert load_mock.call_count == 1
# second request, should use en_US from cache
with app.test_request_context() as ctx:
assert set(b.domain_instance.get_translations_cache(ctx)) == {
("en_US", "messages")
}
assert babel.gettext("Yes") == "Yes"
assert load_mock.call_count == 1
# third request, should load de_DE from cache
the_locale = "de_DE"
with app.test_request_context() as ctx:
assert set(b.domain_instance.get_translations_cache(ctx)) == {
("en_US", "messages")
}
assert babel.gettext("Yes") == "Ja"
assert load_mock.call_count == 2
# now everything is cached, so no more loads should happen!
the_locale = "en_US"
with app.test_request_context() as ctx:
assert set(b.domain_instance.get_translations_cache(ctx)) == {
("en_US", "messages"),
("de_DE", "messages"),
}
assert babel.gettext("Yes") == "Yes"
assert load_mock.call_count == 2
the_locale = "de_DE"
with app.test_request_context() as ctx:
assert set(b.domain_instance.get_translations_cache(ctx)) == {
("en_US", "messages"),
("de_DE", "messages"),
}
assert babel.gettext("Yes") == "Ja"
assert load_mock.call_count == 2
def test_plurals():
app = flask.Flask(__name__)
def set_locale():
return flask.request.environ["LANG"]
babel.Babel(app, locale_selector=set_locale)
# Plural-Forms: nplurals=2; plural=(n != 1)
with app.test_request_context(environ_overrides={"LANG": "de_DE"}):
assert ngettext("%(num)s Apple", "%(num)s Apples", 1) == "1 Apfel"
assert ngettext("%(num)s Apple", "%(num)s Apples", 2) == "2 Äpfel"
# Plural-Forms: nplurals=1; plural=0;
with app.test_request_context(environ_overrides={"LANG": "ja"}):
assert ngettext("%(num)s Apple", "%(num)s Apples", 1) == "リンゴ 1 個"
assert ngettext("%(num)s Apple", "%(num)s Apples", 2) == "リンゴ 2 個"
def test_plurals_different_domains():
app = flask.Flask(__name__)
app.config.update(
{
"BABEL_TRANSLATION_DIRECTORIES": ";".join(
(
"translations",
"translations_different_domain",
)
),
"BABEL_DOMAIN": ";".join(
(
"messages",
"myapp",
)
),
}
)
def set_locale():
return flask.request.environ["LANG"]
babel.Babel(app, locale_selector=set_locale)
# Plural-Forms: nplurals=2; plural=(n != 1)
with app.test_request_context(environ_overrides={"LANG": "de_DE"}):
assert ngettext("%(num)s Apple", "%(num)s Apples", 1) == "1 Apfel"
assert ngettext("%(num)s Apple", "%(num)s Apples", 2) == "2 Äpfel"
# Plural-Forms: nplurals=1; plural=0;
with app.test_request_context(environ_overrides={"LANG": "ja"}):
assert ngettext("%(num)s Apple", "%(num)s Apples", 1) == "リンゴ 1 個"
assert ngettext("%(num)s Apple", "%(num)s Apples", 2) == "リンゴ 2 個"
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