require "spec_helper" require "chef/config_fetcher" describe Chef::ConfigFetcher do let(:valid_json) { Chef::JSONCompat.to_json({ a: "b" }) } let(:invalid_json) { %q[{"syntax-error": "missing quote}] } let(:http) { double("Chef::HTTP::Simple") } let(:config_location_regex) { Regexp.escape(config_location) } let(:invalid_json_error_regex) { /Could not parse the provided JSON file \(#{config_location_regex}\)/ } let(:fetcher) { Chef::ConfigFetcher.new(config_location) } context "when loading a local file" do let(:config_location) { "/etc/chef/client.rb" } let(:config_content) { "# The client.rb content" } it "reads the file from disk" do expect(::File).to receive(:read) .with(config_location) .and_return(config_content) expect(fetcher.read_config).to eq(config_content) end it "gives the expanded path to the config file" do expect(fetcher.expanded_path).to eq(File.expand_path(config_location)) end context "with a relative path" do let(:config_location) { "client.rb" } it "gives the expanded path to the config file" do expected = File.join(Dir.pwd, config_location) expect(fetcher.expanded_path).to eq(expected) end end context "and consuming JSON" do let(:config_location) { "/etc/chef/first-boot.json" } it "returns the parsed JSON" do expect(::File).to receive(:read) .with(config_location) .and_return(valid_json) expect(fetcher.fetch_json).to eq({ "a" => "b" }) end context "and the JSON is invalid" do it "reports the JSON error" do expect(::File).to receive(:read) .with(config_location) .and_return(invalid_json) expect(Chef::Application).to receive(:fatal!) .with(invalid_json_error_regex) fetcher.fetch_json end end end end context "with an HTTP URL config location" do let(:config_location) { "https://example.com/client.rb" } let(:config_content) { "# The client.rb content" } it "returns the config location unchanged for #expanded_path" do expect(fetcher.expanded_path).to eq(config_location) end describe "reading the file" do before do expect(Chef::HTTP::Simple).to receive(:new) .with(config_location) .and_return(http) end it "reads the file over HTTP" do expect(http).to receive(:get) .with("").and_return(config_content) expect(fetcher.read_config).to eq(config_content) end context "and consuming JSON" do let(:config_location) { "https://example.com/foo.json" } it "fetches the file and parses it" do expect(http).to receive(:get) .with("").and_return(valid_json) expect(fetcher.fetch_json).to eq({ "a" => "b" }) end context "and the JSON is invalid" do it "reports the JSON error" do expect(http).to receive(:get) .with("").and_return(invalid_json) expect(Chef::Application).to receive(:fatal!) .with(invalid_json_error_regex) fetcher.fetch_json end end end end end context "with a nil config file argument" do let(:config_location) { nil } it "returns the config location unchanged for #expanded_path" do expect(fetcher.expanded_path).to eq(nil) end end end