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require_relative "../helper"
require "json"

describe "Lib" do
  include WithTemporaryDirectory

  before do
    # Some tests may change the working directory, so reset it to a known good.
    $vim.command "cd #{Dir.getwd}"
    Dir.mkdir File.join(@dir, "node_modules")
  end

  def set_node_version(version)
    executable = File.join(@dir, "node")
    touch executable, <<-end.strip
      #!/bin/sh
      [ $# != 1 -o "$1" != --version  ] && exit 1
      echo "v#{version}"
    end
    File.chmod 0755, executable
    $vim.command(%(let $PATH = "#@dir:" . $PATH))
  end

  describe "node#lib#find" do
    def find(name)
      path = $vim.echo(%(node#lib#find("#{name}", expand("%"))))
      File.exists?(path) ? File.realpath(path) : path
    end

    it "must return ./README before ./README.js" do
      target = touch File.join(@dir, "README")
      touch File.join(@dir, "README.js")

      $vim.edit File.join(@dir, "index.js")
      find("./README").must_equal target
    end

    it "must return ./README.txt relative to file" do
      target = touch File.join(@dir, "lib", "README.txt")
      $vim.edit File.join(@dir, "lib", "index.js")
      find("./README.txt").must_equal target
    end

    it "must return ../README.txt" do
      target = touch File.join(@dir, "README.txt")
      Dir.mkdir File.join(@dir, "lib")
      $vim.edit File.join(@dir, "lib", "index.js")
      find("../README.txt").must_equal target
    end

    it "must return /.../README.txt" do
      target = touch File.join(@dir, "README.txt")
      Dir.mkdir File.join(@dir, "lib")
      $vim.edit File.join(@dir, "lib", "index.js")
      find("#@dir/README.txt").must_equal target
    end

    it "must return ./other.js given ./other" do
      target = touch File.join(@dir, "other.js")
      $vim.edit File.join(@dir, "index.js")
      find("./other").must_equal target
    end

    it "must return ./other.jsx given ./other" do
      target = touch File.join(@dir, "other.jsx")
      $vim.edit File.join(@dir, "index.js")
      find("./other").must_equal target
    end

    it "must return ./other.es given ./other" do
      target = touch File.join(@dir, "other.es")
      $vim.edit File.join(@dir, "index.js")
      find("./other").must_equal target
    end

    it "must return ./other.js given ./other relative to file" do
      target = touch File.join(@dir, "lib", "other.js")
      $vim.edit File.join(@dir, "lib", "index.js")
      find("./other").must_equal target
    end

    it "must return ./other.js before ./other/index.js given ./other" do
      target = touch File.join(@dir, "other.js")
      touch File.join(@dir, "other", "index.js")
      $vim.edit File.join(@dir, "index.js")
      find("./other").must_equal target
    end

    it "must return ../other.js given ../other" do
      target = touch File.join(@dir, "other.js")
      Dir.mkdir File.join(@dir, "lib")
      $vim.edit File.join(@dir, "lib", "index.js")
      find("../other").must_equal target
    end

    it "must return /.../other.js given /.../other" do
      target = touch File.join(@dir, "other.js")
      Dir.mkdir File.join(@dir, "lib")
      $vim.edit File.join(@dir, "lib", "index.js")
      find("#@dir/other").must_equal target
    end

    it "must return ./package.json given ./package" do
      target = touch File.join(@dir, "package.json")
      $vim.edit File.join(@dir, "index.js")
      find("./package").must_equal target
    end

    it "must return ./index.js given ." do
      target = touch File.join(@dir, "index.js")
      $vim.edit File.join(@dir, "other.js")
      find(".").must_equal target
    end

    it "must return ./index.js given ./" do
      target = touch File.join(@dir, "index.js")
      $vim.edit File.join(@dir, "other.js")
      find("./").must_equal target
    end

    it "must not find ./index/index.js given ./" do
      touch File.join(@dir, "index", "index.js")
      $vim.edit File.join(@dir, "other.js")
      $vim.echo(%(empty(node#lib#find("./", expand("%"))))).must_equal "1"
    end

    it "must not find ./.js given ./" do
      touch File.join(@dir, ".js")
      $vim.edit File.join(@dir, "other.js")
      $vim.echo(%(empty(node#lib#find("./", expand("%"))))).must_equal "1"
    end

    it "must return ../index.js given .." do
      target = touch File.join(@dir, "index.js")
      Dir.mkdir File.join(@dir, "lib")
      $vim.edit File.join(@dir, "lib", "other.js")
      find("..").must_equal target
    end

    it "must return ../index.js given ../" do
      target = touch File.join(@dir, "index.js")
      Dir.mkdir File.join(@dir, "lib")
      $vim.edit File.join(@dir, "lib", "other.js")
      find("../").must_equal target
    end

    it "must return /.../index.js given /..." do
      target = touch File.join(@dir, "index.js")
      Dir.mkdir File.join(@dir, "lib")
      $vim.edit File.join(@dir, "lib", "index.js")
      find("#@dir").must_equal target
    end

    it "must return /.../index.js given /.../" do
      target = touch File.join(@dir, "index.js")
      Dir.mkdir File.join(@dir, "lib")
      $vim.edit File.join(@dir, "lib", "index.js")
      find("#@dir/").must_equal target
    end

    it "must return ./lib/index.js given ./lib" do
      target = touch File.join(@dir, "lib", "index.js")
      $vim.edit File.join(@dir, "index.js")
      find("./lib").must_equal target
    end

    it "must return ./lib/other.js given ./lib with main" do
      target = touch File.join(@dir, "lib", "other.js")
      touch File.join(@dir, "lib", "package.json"), JSON.dump(:main => "other")
      $vim.edit File.join(@dir, "index.js")
      find("./lib").must_equal target
    end

    it "must return ./lib/index.js given ./lib with empty main" do
      target = touch File.join(@dir, "lib", "index.js")
      touch File.join(@dir, "lib", "package.json"), JSON.dump(:main => "")
      $vim.edit File.join(@dir, "index.js")
      find("./lib").must_equal target
    end

    it "must return ./lib/index.js given ./lib with non-existent main" do
      target = touch File.join(@dir, "lib", "index.js")
      touch File.join(@dir, "lib", "package.json"), JSON.dump(:main => "new")
      $vim.edit File.join(@dir, "index.js")
      find("./lib").must_equal target
    end

    it "must return ./other.js before ./other/index.js given . with main" do
      touch File.join(@dir, "package.json"), JSON.dump(:main => "other")
      target = touch File.join(@dir, "other.js")
      touch File.join(@dir, "other", "index.js")

      $vim.edit File.join(@dir, "index.js")
      find(".").must_equal target
    end

    it "must return node_modules/foo/index.js given foo" do
      index = File.join(@dir, "node_modules", "foo", "index.js")
      touch index
      $vim.edit File.join(@dir, "index.js")
      find("foo").must_equal index
    end

    it "must return node_modules/foo/other.js given foo/other" do
      other = File.join(@dir, "node_modules", "foo", "other.js")
      touch other
      $vim.edit File.join(@dir, "index.js")
      find("foo/other").must_equal other
    end

    it "must return node_modules/foo/other.js given foo/other.js" do
      other = File.join(@dir, "node_modules", "foo", "other.js")
      touch other
      $vim.edit File.join(@dir, "index.js")
      find("foo/other.js").must_equal other
    end

    # When package.json refers to a regular file.
    it "must return node_modules/foo/other.js given foo with main" do
      mod = File.join(@dir, "node_modules", "foo")
      touch File.join(mod, "package.json"), JSON.dump(:main => "./other.js")
      target = touch File.join(mod, "other.js")

      $vim.edit File.join(@dir, "index.js")
      find("foo").must_equal target
    end

    # When package.json refers to a directory.
    it "must return node_modules/foo/lib/index.js given foo with main as ./lib" do
      mod = File.join(@dir, "node_modules", "foo")
      touch File.join(mod, "package.json"), JSON.dump(:main => "./lib")
      target = touch File.join(mod, "lib/index.js")

      $vim.edit File.join(@dir, "index.js")
      find("foo").must_equal target
    end

    it "must return node_modules/foo/lib/index.js given foo with main as lib" do
      mod = File.join(@dir, "node_modules", "foo")
      touch File.join(mod, "package.json"), JSON.dump(:main => "lib")
      target = touch File.join(mod, "lib/index.js")

      $vim.edit File.join(@dir, "index.js")
      find("foo").must_equal target
    end

    it "must return node_modules/@scope/foo/index.js given @scope/foo" do
      target = File.join(@dir, "node_modules", "@scope", "foo", "index.js")
      touch target
      $vim.edit File.join(@dir, "index.js")
      find("@scope/foo").must_equal target
    end

    it "must return empty when looking for nothing" do
      $vim.edit File.join(@dir, "index.js")
      $vim.echo(%(empty(node#lib#find("", expand("%"))))).must_equal "1"
    end

    it "must return empty when nothing found" do
      $vim.edit File.join(@dir, "index.js")
      $vim.echo(%(empty(node#lib#find("new", expand("%"))))).must_equal "1"
    end

    it "must return URL for core module for current Node version" do
      set_node_version "0.13.37"
      $vim.edit File.join(@dir, "index.js")
      url = "https://rawgit.com/nodejs/node/v0.13.37/lib/assert.js"
      find("assert").must_equal url
    end

    it "must return URL for core module on master if no Node version" do
      touch File.join(@dir, "node"), "#!/bin/sh\nexit 1"
      File.chmod 0755, File.join(@dir, "node")
      $vim.edit File.join(@dir, "index.js")
      $vim.command(%(let $PATH = "#@dir:" . $PATH))
      url = "https://rawgit.com/nodejs/node/master/lib/assert.js"
      find("assert").must_equal url
    end

    it "must return URL for node.js for current Node version" do
      set_node_version "0.13.37"
      $vim.edit File.join(@dir, "index.js")
      url = "https://rawgit.com/nodejs/node/v0.13.37/src/node.js"
      find("node").must_equal url
    end

    it "must return URL for node.js on master if no Node version" do
      touch File.join(@dir, "node"), "#!/bin/sh\nexit 1"
      File.chmod 0755, File.join(@dir, "node")
      $vim.edit File.join(@dir, "index.js")
      $vim.command(%(let $PATH = "#@dir:" . $PATH))
      url = "https://rawgit.com/nodejs/node/master/src/node.js"
      find("node").must_equal url
    end
  end

  describe "node#lib#glob" do
    require "json"

    before do
      $vim.edit File.join(@dir, "index.js")
    end

    def glob(arg = "")
      # Because of possible locale and filesystem case-sensitiveness
      # differences, sort the output explicitly to be resistant.
      JSON.parse($vim.echo(%(node#lib#glob("#{arg}"))).gsub("'", '"')).sort
    end

    describe "given nothing" do
      it "must return files and directories" do
        touch File.join(@dir, "index.js")
        touch File.join(@dir, "README.txt")
        Dir.mkdir File.join(@dir, "test")

        files = %w[./README.txt ./index.js ./test/]
        glob.must_equal (CORE_MODULES + files).sort
      end

      it "must return modules and core modules" do
        FileUtils.mkpath File.join(@dir, "node_modules", "require-guard")
        FileUtils.mkpath File.join(@dir, "node_modules", "export")
        FileUtils.mkpath File.join(@dir, "node_modules", "soul")
        glob.must_equal (CORE_MODULES + %w[export/ require-guard/ soul/]).sort
      end

      it "must return core modules without slashes" do
        glob.must_equal CORE_MODULES
        glob.wont_equal /\//
      end

      # Even though node.js is the bootstrapper file in src/.
      it "must return \"node\" as one of those core modules" do
        glob.must_include "node"
      end

      it "must return files, directories and modules" do
        FileUtils.mkpath File.join(@dir, "node_modules", "export")
        FileUtils.mkpath File.join(@dir, "node_modules", "soul")
        touch File.join(@dir, "index.js")
        touch File.join(@dir, "README.txt")
        Dir.mkdir File.join(@dir, "test")

        files = %w[./README.txt ./index.js ./test/ export/ soul/]
        glob.must_equal (CORE_MODULES + files).sort
      end

      it "must not return the node_modules directory" do
        FileUtils.mkpath File.join(@dir, "node_modules")
        glob.must_equal CORE_MODULES
      end
    end

    describe "given absolute path" do
      it "must return files and directories given /" do
        files = Dir.entries("/")
        files.reject! {|f| f =~ /^\./ }
        files.sort!
        files.map! {|f| "/" + f }
        files.map! {|f| File.directory?(f) ? f + "/" : f }

        glob("/").must_equal files
      end

      it "must return files and directories given /.../" do
        touch File.join(@dir, "index.js")
        touch File.join(@dir, "README")
        Dir.mkdir File.join(@dir, "test")

        files = %W[#@dir/README #@dir/index.js #@dir/node_modules/ #@dir/test/]
        glob(@dir).must_equal files
      end

      it "must return files and directories given /.../test" do
        touch File.join(@dir, "test", "index_test.js")
        touch File.join(@dir, "test", "helpers.js")
        files = %W[#@dir/test/helpers.js #@dir/test/index_test.js]
        glob(File.join(@dir, "test")).must_equal files
      end

      it "must not return modules along with files" do
        touch File.join(@dir, "index.js")
        touch File.join(@dir, "README")
        Dir.mkdir File.join(@dir, "test")
        FileUtils.mkpath File.join(@dir, "node_modules", "soul")

        files = %W[#@dir/README #@dir/index.js #@dir/node_modules/ #@dir/test/]
        glob(@dir).must_equal files
      end
    end

    describe "given relative path" do
      it "must return files and directories given ." do
        touch File.join(@dir, "index.js")
        touch File.join(@dir, "README")
        Dir.mkdir File.join(@dir, "test")
        glob(".").must_equal %W[./README ./index.js ./test/]
      end

      it "must return files and directories given ./" do
        touch File.join(@dir, "index.js")
        touch File.join(@dir, "README")
        Dir.mkdir File.join(@dir, "test")
        glob("./").must_equal %W[./README ./index.js ./test/]
      end

      it "must return files and directories given .//" do
        touch File.join(@dir, "index.js")
        touch File.join(@dir, "README.txt")
        Dir.mkdir File.join(@dir, "test")
        glob(".//").must_equal %W[.//README.txt .//index.js .//test/]
      end

      it "must return files and directories given .///" do
        touch File.join(@dir, "index.js")
        touch File.join(@dir, "README.txt")
        Dir.mkdir File.join(@dir, "test")
        glob(".///").must_equal %W[.///README.txt .///index.js .///test/]
      end

      it "must return files and directories given ./test" do
        touch File.join(@dir, "test", "test.js")
        touch File.join(@dir, "test", "helpers.js")
        glob("./test/").must_equal %W[./test/helpers.js ./test/test.js]
      end
    end

    describe "given module name" do
      it "must return files and directories given soul" do
        touch File.join(@dir, "node_modules", "soul", "index.js")
        touch File.join(@dir, "node_modules", "soul", "README")
        FileUtils.mkpath File.join(@dir, "node_modules", "soul", "test")
        glob("soul").must_equal %w[soul/README soul/index.js soul/test/]
      end

      it "must return files and directories given soul/" do
        touch File.join(@dir, "node_modules", "soul", "index.js")
        FileUtils.mkpath File.join(@dir, "node_modules", "soul", "test")
        glob("soul/").must_equal %w[soul/index.js soul/test/]
      end

      it "must return files and directories given soul//" do
        touch File.join(@dir, "node_modules", "soul", "index.js")
        FileUtils.mkpath File.join(@dir, "node_modules", "soul", "test")
        glob("soul//").must_equal %w[soul//index.js soul//test/]
      end

      it "must return files and directories given soul///" do
        touch File.join(@dir, "node_modules", "soul", "index.js")
        FileUtils.mkpath File.join(@dir, "node_modules", "soul", "test")
        glob("soul///").must_equal %w[soul///index.js soul///test/]
      end

      it "must return files and directories given soul/test" do
        touch File.join(@dir, "node_modules", "soul", "test", "test.js")
        touch File.join(@dir, "node_modules", "soul", "test", "helpers.js")
        glob("soul/test").must_equal %w[soul/test/helpers.js soul/test/test.js]
      end
    end
  end

  describe "node#lib#version" do
    it "should return current Node's version" do
      set_node_version "0.13.37"
      $vim.echo("node#lib#version()").must_equal "0.13.37"
    end
  end
end