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# frozen_string_literal: true
# Inspired by https://github.com/ljkbennett/stub_env/blob/master/lib/stub_env/helpers.rb
module StubENV
# Stub ENV variables
#
# You can provide either a key and value as separate params or both in a Hash format
#
# Keys and values will always be converted to String, to comply with how ENV behaves
#
# @param key_or_hash [String, Hash<String,String>]
# @param value [String]
def stub_env(key_or_hash, value = nil)
init_stub unless env_stubbed?
if key_or_hash.is_a? Hash
key_or_hash.each do |key, value|
add_stubbed_value(key, ensure_env_type(value))
end
else
add_stubbed_value key_or_hash, ensure_env_type(value)
end
end
private
STUBBED_KEY = '__STUBBED__'
def add_stubbed_value(key, value)
allow(ENV).to receive(:[]).with(key).and_return(value)
allow(ENV).to receive(:key?).with(key).and_return(true)
allow(ENV).to receive(:fetch).with(key).and_return(value)
allow(ENV).to receive(:fetch).with(key, anything) do |_, default_val|
value || default_val
end
end
def env_stubbed?
ENV[STUBBED_KEY]
end
def init_stub
allow(ENV).to receive(:[]).and_call_original
allow(ENV).to receive(:key?).and_call_original
allow(ENV).to receive(:fetch).and_call_original
add_stubbed_value(STUBBED_KEY, true)
end
def ensure_env_type(value)
value.nil? ? value : value.to_s
end
end
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