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require 'spec_helper'
require 'oj'
require 'prometheus/client/helper/json_parser'
describe Prometheus::Client::Helper::JsonParser do
describe '.load' do
let(:input) { %({ "a": 1 }) }
shared_examples 'JSON parser' do
it 'parses JSON' do
expect(described_class.load(input)).to eq({ 'a' => 1 })
end
it 'raises JSON::ParserError' do
expect { described_class.load("{false}") }.to raise_error(JSON::ParserError)
end
end
context 'with Oj' do
it_behaves_like 'JSON parser'
end
context 'without Oj' do
before(:all) do
Object.send(:remove_const, 'Oj')
load "prometheus/client/helper/json_parser.rb"
end
it_behaves_like 'JSON parser'
end
end
end
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