require 'xing/specdoc/document'

describe Xing::SpecDoc::Document do
  let :path do
    "whatever_path"
  end

  subject :doccer do
    Xing::SpecDoc::Document.new(path, response_json)
  end

  let :our_hash do
    {
      "number" => 127,
      "string" => "a string",
      "string_list" => [
        "a", "b", "c"
      ],
      "number_list" => [
        1, 2, 3
      ],
      "object" => {
        "number" => 127,
        "string" => "a string",
        "string_list" => [
          "a", "b", "c"
        ],
        "number_list" => [
          1, 2, 3
        ]
      }
    }
  end

  let :other_hash do
    our_hash.dup
  end

  let :response_json do
    our_hash.to_json
  end

  context "with an empty content" do
    it "should work okay" do
      doc = Xing::SpecDoc::Document.new("somewhere", "")
      expect(doc.parsed_body).to eq({})
      expect(doc.pretty_body).to eq("")
    end
  end

  context "should not register difference" do
    let :is_diff do
      false
    end

    it "from an identical JSON" do
      expect(doccer.different_from?(other_hash)).to eq(is_diff)
    end

    it "from changed number values" do
      other_hash["number"] = 321

      expect(doccer.different_from?(other_hash)).to eq(is_diff)
    end

    it "from changed string values" do
      other_hash["string"] = "another string"

      expect(doccer.different_from?(other_hash)).to eq(is_diff)
    end

    it "from changed list values" do
      other_hash["string_list"] = [ "z","y","x" ]
      other_hash["number_list"] = [ 4,5,6 ]

      expect(doccer.different_from?(other_hash)).to eq(is_diff)
    end
  end

  context "should register differences" do
    let :is_diff do
      true
    end

    it "when string changes to number" do
      other_hash["string"] = 1234

      expect(doccer.different_from?(other_hash)).to eq(is_diff)
    end

    it "when number changes to string" do
      other_hash["number"] = "tuesday"

      expect(doccer.different_from?(other_hash)).to eq(is_diff)
    end

    it "when a field is removed" do
      other_hash.delete("string")

      expect(doccer.different_from?(other_hash)).to eq(is_diff)
    end

    it "when a field is added" do
      other_hash["new_string"] = "hello"

      expect(doccer.different_from?(other_hash)).to eq(is_diff)
    end

    it "when a list shortens" do
      other_hash["string_list"] = our_hash["string_list"][0..-2]

      expect(doccer.different_from?(other_hash)).to eq(is_diff)
    end

    it "when a list lengthens" do
      other_hash["number_list"] = our_hash["number_list"] + [5]

      expect(doccer.different_from?(other_hash)).to eq(is_diff)
    end

    it "when a member of list changes from number to string" do
      other_hash["number_list"] = our_hash["number_list"][0..-2] + ["string"]

      expect(doccer.different_from?(other_hash)).to eq(is_diff)
    end

    it "when a member of list changes from string to number" do
      other_hash["string_list"] = our_hash["string_list"][0..-2] + [37]

      expect(doccer.different_from?(other_hash)).to eq(is_diff)
    end
  end
end