begin
  require 'rubygems'
rescue LoadError
  # meh
end
require 'shoulda'
require 'mocha'
require 'git_meta'

class GitMetaTest < Test::Unit::TestCase
  context "A Scanner instance" do
    should "parse the data" do
      scanner = GitMeta::Scanner.new("\nfoo: bar\nfuzz: bazz\n")
      expected = {"foo"=> "bar", "fuzz"=> "bazz"}
      assert_equal expected, scanner.info
    end

    should "accept hypens in the keys" do
      scanner = GitMeta::Scanner.new("\nhi-there: you\nfoo: bar\n")
      expected = {"hi-there" => "you", "foo" => "bar"}
      assert_equal expected, scanner.info
    end

    should "accept whitespace in the values" do
      scanner = GitMeta::Scanner.new("\nSigned-off-by: José Valim <jose.valim@gmail.com>\nfoo: bear\n")
      expected = {"Signed-off-by" => "José Valim <jose.valim@gmail.com>", "foo" => "bear"}
      assert_equal expected, scanner.info
    end

    should "play nice with comrades" do
      scanner = GitMeta::Scanner.new("\nhi-there: you\nfoo: bar\n")
      other_scanner = GitMeta::Scanner.new("\nhi-there: you\nfoo: bar\n")
      assert_equal scanner, other_scanner
    end
  end

  context "A Get instance" do
    setup do
      @cat_file = <<-FOO
      tree 0b31db52b0f96659a93dee8c5c7a1f8a95f0bb2b
      parent e033a2271fa3c59ae2c8b30f4b5ef8eb83e739db
      author Sam Elliott <sam@lenary.co.uk> 1266027667 +0100
      committer Sam Elliott <sam@lenary.co.uk> 1266027667 +0100

      foo: bar
      Signed-Off-By: Me!
      FOO
      IO.expects(:popen).with("git-cat-file -p HEAD", 'r').returns(@cat_file).at_least_once
    end

    should "initialize correctly without key" do
      @getter = GitMeta::Get.new("HEAD", nil)
      assert_nil @getter.key
      assert_equal @getter.scanner, GitMeta::Scanner.new(@cat_file)
    end

    should "initialize correctly with a key" do
      @getter = GitMeta::Get.new("HEAD", "foo")
      assert_equal @getter.key, "foo"
      assert_equal @getter.scanner, GitMeta::Scanner.new(@cat_file)
    end

    should "display itself nicely" do
      @getter = GitMeta::Get.new("HEAD", "foo")
      assert_equal @getter.to_s, "bar"
      long_expectation = "foo: bar\nSigned-Off-By: Me!\n"
      @getter = GitMeta::Get.new("HEAD", nil)
      assert_equal @getter.to_s, long_expectation
    end
  end

  context "A Hash instance" do
    should "print correctly" do
      hash = GitMeta::Hash.new
      hash["foo"] = "bar"
      hash["fuzz"] = "bazz"

      expected = "foo: bar\nfuzz: bazz\n"
      assert_equal expected, hash.to_s
    end
  end
end