# coding: utf-8
$:.unshift "."
require 'spec_helper'
require 'rdf/spec/format'

describe JSON::LD::Format do
  it_behaves_like 'an RDF::Format' do
    let(:format_class) {JSON::LD::Format}
  end

  describe ".for" do
    formats = [
      :jsonld,
      "etc/doap.jsonld",
      {file_name:      'etc/doap.jsonld'},
      {file_extension: 'jsonld'},
      {content_type:   'application/ld+json'},
      {content_type:   'application/x-ld+json'},
    ].each do |arg|
      it "discovers with #{arg.inspect}" do
        expect(RDF::Format.for(arg)).to eq described_class
      end
    end

    {
      jsonld:   '{"@context" => "foo"}',
      context:  %({\n"@context": {),
      id:       %({\n"@id": {),
      type:     %({\n"@type": {),
    }.each do |sym, str|
      it "detects #{sym}" do
        expect(described_class.for {str}).to eq described_class
      end
    end

    it "should discover 'jsonld'" do
      expect(RDF::Format.for(:jsonld).reader).to eq JSON::LD::Reader
    end
  end

  describe "#to_sym" do
    specify {expect(described_class.to_sym).to eq :jsonld}
  end

  describe ".detect" do
    {
      jsonld: '{"@context" => "foo"}',
    }.each do |sym, str|
      it "detects #{sym}" do
        expect(described_class.detect(str)).to be_truthy
      end
    end

    {
      n3:         "@prefix foo: <bar> .\nfoo:bar = {<a> <b> <c>} .",
      nquads:     "<a> <b> <c> <d> . ",
      rdfxml:     '<rdf:RDF about="foo"></rdf:RDF>',
      rdfa:       '<div about="foo"></div>',
      microdata:  '<div itemref="bar"></div>',
      ntriples:   "<a> <b> <c> .",
      multi_line: '<a>\n  <b>\n  "literal"\n .',
      turtle:     "@prefix foo: <bar> .\n foo:a foo:b <c> .",
    }.each do |sym, str|
      it "does not detect #{sym}" do
        expect(described_class.detect(str)).to be_falsey
      end
    end
  end

  describe ".cli_commands" do
    require 'rdf/cli'
    let(:ttl) {File.expand_path("../test-files/test-1-rdf.ttl", __FILE__)}
    let(:json) {File.expand_path("../test-files/test-1-input.json", __FILE__)}
    let(:context) {File.expand_path("../test-files/test-1-context.json", __FILE__)}

    describe "#expand" do
      it "expands RDF" do
        expect {RDF::CLI.exec(["expand", ttl], format: :ttl)}.to write.to(:output)
      end
      it "expands JSON" do
        expect {RDF::CLI.exec(["expand", json], format: :jsonld)}.to write.to(:output)
      end
    end

    describe "#compact" do
      it "compacts RDF" do
        expect {RDF::CLI.exec(["compact", ttl], context: context, format: :ttl)}.to write.to(:output)
      end
      it "compacts JSON" do
        expect {RDF::CLI.exec(["compact", json], context: context, format: :jsonld)}.to write.to(:output)
      end
    end

    describe "#flatten" do
      it "flattens RDF" do
        expect {RDF::CLI.exec(["flatten", ttl], context: context, format: :ttl)}.to write.to(:output)
      end
      it "flattens JSON" do
        expect {RDF::CLI.exec(["flatten", json], context: context, format: :jsonld)}.to write.to(:output)
      end
    end

    describe "#frame" do
      it "frames RDF" do
        expect {RDF::CLI.exec(["frame", ttl], frame: context, format: :ttl)}.to write.to(:output)
      end
      it "frames JSON" do
        expect {RDF::CLI.exec(["frame", json], frame: context, format: :jsonld)}.to write.to(:output)
      end
    end
  end
end