def test_toml_settings_raise_helpful_errors_for_missing_substitutions():
# Given that I have a settings file that has an substitutions for missing env vars
# When I load it
# Then a RuntimeError should be raised
with pytest.raises(RuntimeError) as e:
TOMLSettings.from_path("tests/contrib/fixtures/settings_with_env.toml",
"prod")
# And the message should be helpful
assert str(
e.value
) == "'DATABASE_URL' environment variable missing for setting '$.db.database_uris.0'."
def test_toml_settings_raise_helpful_errors_for_invalid_substitutions():
# Given that I have a settings file that has an invalid env substitution
# When I load it
# Then a RuntimeError should be raised
with pytest.raises(RuntimeError) as e:
TOMLSettings.from_path(
"tests/contrib/fixtures/settings_with_env_invalid_subst.toml",
"prod")
# And the message should be helpful
assert str(
e.value
) == "Invalid variable substitution syntax for value '$' in setting '$.db.database_uri'."
def test_toml_settings_can_look_up_deeply_nested_values():
# Given that I have a settings object
settings = TOMLSettings.from_path("tests/contrib/fixtures/settings.toml",
"dev")
# When I call deep_get to look up a nested value that doesn't exist
# Then I should get None back
assert settings.deep_get("i.dont.exist") is None
# When I call deep_get to look up a nested value
# Then I should get that value back
assert settings.deep_get("sessions.secret") == "supersekrit"
# When I call deep_get with a path that leads into a string
# Then I should get back a TypeError
with pytest.raises(TypeError):
settings.deep_get("sessions.secret.value")
# When I call deep_get with a path that leads into a list with an invalid integer
# Then I should get back a TypeError
with pytest.raises(TypeError):
settings.deep_get("oauth_providers.facebook")
# When I call deep_get with a path that leads into a list with an invalid index
# Then I should get back a TypeError
with pytest.raises(TypeError):
settings.deep_get("oauth_providers.5")
# When I call deep_get with a path that leads into a list with a valid index
# Then I should get back a value
assert settings.deep_get("oauth_providers.0.name") == "Facebook"
def test_toml_settings_can_look_up_required_values():
# Given that I have a settings object
settings = TOMLSettings.from_path("tests/contrib/fixtures/settings.toml",
"dev")
# When I call strict_get with a path that doesn't exist
# Then a RuntimeError should be raised
with pytest.raises(RuntimeError):
settings.strict_get("i.dont.exist")
# When I call strict_get with a valid path
# Then I should get that value back
assert settings.strict_get("sessions.secret")
def test_toml_settings_can_substitute_environment_variables():
# Given that I have a DATABASE_URL environment variable
os.environ["DATABASE_URL"] = "postgres://[email protected]/postgres"
# And an OAUTH_CLIENT_ID environment variable
os.environ["OAUTH_CLIENT_ID"] = "fake-client-id"
try:
# When I load a settings file that references those variables
settings = TOMLSettings.from_path(
"tests/contrib/fixtures/settings_with_env.toml", "prod")
# Then my settings values should be substituted
assert settings.strict_get("db.database_uris") == [
"postgres://[email protected]/postgres"
]
assert settings.strict_get("oauth_providers") == [{
"client_id":
"fake-client-id"
}]
finally:
del os.environ["DATABASE_URL"]
del os.environ["OAUTH_CLIENT_ID"]
import os
from molten.contrib.toml_settings import TOMLSettings
from common import path_to
ENVIRONMENT = os.getenv("ENVIRONMENT", "dev")
SETTINGS = TOMLSettings.from_path(path_to("settings.toml"), ENVIRONMENT)
def __getattr__(name):
return getattr(SETTINGS, name)