require "spec_helper" RSpec.describe OpenGraphReader do let(:invalid_object) { "" } describe "::fetch!" do it "raises if there's no html" do allow(OpenGraphReader::Fetcher).to receive(:new).and_return(double(html?: false)) expect { OpenGraphReader.fetch! "http://example.org" }.to raise_error OpenGraphReader::NoOpenGraphDataError end it "raises if there are no tags" do fetcher = double(html?: true, url: "http://example.org", body: "") allow(OpenGraphReader::Fetcher).to receive(:new).and_return(fetcher) allow(OpenGraphReader::Parser).to receive(:new).and_return(double(any_tags?: false)) expect { OpenGraphReader.fetch! "http://example.org" }.to raise_error OpenGraphReader::NoOpenGraphDataError end it "raises if there's an invalid object" do fetcher = double(html?: true, url: "http://example.org", body: invalid_object) allow(OpenGraphReader::Fetcher).to receive(:new).and_return(fetcher) expect { OpenGraphReader.fetch! "http://example.org" }.to raise_error OpenGraphReader::InvalidObjectError end end describe "::fetch" do it "does not raise if there's no html" do allow(OpenGraphReader::Fetcher).to receive(:new).and_return(double(html?: false)) expect { OpenGraphReader.fetch "http://example.org" }.to_not raise_error end it "does not raise if there are no tags" do fetcher = double(html?: true, url: "http://example.org", body: "") allow(OpenGraphReader::Fetcher).to receive(:new).and_return(fetcher) allow(OpenGraphReader::Parser).to receive(:new).and_return(double(any_tags?: false)) expect { OpenGraphReader.fetch "http://example.org" }.to_not raise_error end it "does not raise if there's an invalid object" do fetcher = double(html?: true, url: "http://example.org", body: invalid_object) allow(OpenGraphReader::Fetcher).to receive(:new).and_return(fetcher) expect { OpenGraphReader.fetch "http://example.org" }.to_not raise_error end end describe "::parse!" do it "raises if there are no tags" do allow(OpenGraphReader::Parser).to receive(:new).and_return(double(any_tags?: false)) expect { OpenGraphReader.parse! "" }.to raise_error OpenGraphReader::NoOpenGraphDataError end it "raises if there's an invalid object" do expect { OpenGraphReader.parse! invalid_object }.to raise_error OpenGraphReader::InvalidObjectError end end describe "::parse" do it "does not raise if there are no tags" do allow(OpenGraphReader::Parser).to receive(:new).and_return(double(any_tags?: false)) expect { OpenGraphReader.parse "" }.to_not raise_error end it "does not raise if there's an invalid object" do expect { OpenGraphReader.parse invalid_object }.to_not raise_error end end end