6 files changed, 1227 insertions, 0 deletions
diff --git a/dotfiles/.local/share/nvim/site/test/autoload/lib_test.rb b/dotfiles/.local/share/nvim/site/test/autoload/lib_test.rb
new file mode 100644
index 0000000..e39280c
--- /dev/null
+++ b/dotfiles/.local/share/nvim/site/test/autoload/lib_test.rb
@@ -0,0 +1,468 @@
+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
diff --git a/dotfiles/.local/share/nvim/site/test/autoload_test.rb b/dotfiles/.local/share/nvim/site/test/autoload_test.rb
new file mode 100644
index 0000000..aa9bb49
--- /dev/null
+++ b/dotfiles/.local/share/nvim/site/test/autoload_test.rb
@@ -0,0 +1,561 @@
+require_relative "./helper"
+require "json"
+
+describe "Autoloaded" do
+  include WithTemporaryDirectory
+
+  before do
+    FileUtils.touch File.join(@dir, "package.json")
+  end
+
+  after do
+    $vim.command("windo wincmd c")
+  end
+
+  describe "Autocommand" do
+    it "must fire user autcommand \"Node\"" do
+      $vim.command "au User Node let node_autocommand = 1337"
+      $vim.edit File.join(@dir, "other.js")
+      $vim.echo(%(g:node_autocommand)).must_equal "1337"
+    end
+  end
+
+  describe "Goto file" do
+    it "must define plug mapping in non-JavaScript files" do
+      $vim.edit File.join(@dir, "README")
+      $vim.echo(%(maparg("<Plug>NodeGotoFile", "n"))).wont_equal ""
+    end
+
+    it "must not be mapped in non-JavaScript files" do
+      $vim.edit File.join(@dir, "README")
+      $vim.echo(%(hasmapto("<Plug>NodeGotoFile"))).must_equal "0"
+    end
+
+    it "must edit README.txt" do
+      touch File.join(@dir, "index.js"), %(// Please read README.txt)
+      touch File.join(@dir, "README.txt")
+
+      $vim.edit File.join(@dir, "index.js")
+      $vim.feedkeys "$gf"
+      $vim.echo(%(bufname("%"))).must_equal File.join(@dir, "README.txt")
+    end
+
+    it "must edit README before README.js" do
+      touch File.join(@dir, "index.js"), "// Please read README"
+      touch File.join(@dir, "README")
+      touch File.join(@dir, "README.js")
+
+      $vim.edit File.join(@dir, "index.js")
+      $vim.feedkeys "$gf"
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "README")
+    end
+
+    it "must edit ./README.txt relative to file" do
+      touch File.join(@dir, "foo", "index.js"), %(// Please read ./README.txt)
+      touch File.join(@dir, "foo", "README.txt")
+
+      $vim.edit File.join(@dir, "foo", "index.js")
+      $vim.feedkeys "$gf"
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "foo", "README.txt")
+    end
+
+    it "must edit /.../README.txt" do
+      touch File.join(@dir, "index.js"), %(// Read #@dir/lib/README.txt)
+      touch File.join(@dir, "lib", "README.txt")
+
+      $vim.edit File.join(@dir, "index.js")
+      $vim.feedkeys "$gf"
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "lib", "README.txt")
+    end
+
+    it "must edit ./other.js relative to file" do
+      touch File.join(@dir, "foo", "index.js"), %(require("./other"))
+      touch File.join(@dir, "foo", "other.js")
+
+      $vim.edit File.join(@dir, "foo", "index.js")
+      $vim.feedkeys "f.gf"
+
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "foo", "other.js")
+    end
+
+    it "must edit ./index.js given ." do
+      touch File.join(@dir, "other.js"), %(require("."))
+      touch File.join(@dir, "index.js")
+
+      $vim.edit File.join(@dir, "other.js")
+      $vim.feedkeys "f.gf"
+
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "index.js")
+    end
+
+    it "must edit ./index.js given ./" do
+      touch File.join(@dir, "other.js"), %(require("./"))
+      touch File.join(@dir, "index.js")
+
+      $vim.edit File.join(@dir, "other.js")
+      $vim.feedkeys "f.gf"
+
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "index.js")
+    end
+
+    it "must edit ../index.js given .." do
+      touch File.join(@dir, "foo", "other.js"), %(require(".."))
+      touch File.join(@dir, "index.js")
+
+      $vim.edit File.join(@dir, "foo", "other.js")
+      $vim.feedkeys "f.gf"
+
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "index.js")
+    end
+
+    it "must edit ../index.js given ../" do
+      touch File.join(@dir, "foo", "other.js"), %(require("../"))
+      touch File.join(@dir, "index.js")
+
+      $vim.edit File.join(@dir, "foo", "other.js")
+      $vim.feedkeys "f.gf"
+
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "index.js")
+    end
+
+    it "must edit ./node_modules/foo/index.js given foo" do
+      touch File.join(@dir, "index.js"), %(require("foo"))
+      target = touch File.join(@dir, "node_modules", "foo", "index.js")
+
+      $vim.edit File.join(@dir, "index.js")
+      $vim.feedkeys "$hhgf"
+      $vim.echo(%(bufname("%"))).must_equal target
+    end
+
+    it "must edit ./node_modules/@scope/foo/index.js given @scope/foo" do
+      touch File.join(@dir, "index.js"), %(require("@scope/foo"))
+      target = File.join(@dir, "node_modules", "@scope", "foo", "index.js")
+      touch target
+
+      $vim.edit File.join(@dir, "index.js")
+      $vim.feedkeys "$hhgf"
+      $vim.echo(%(bufname("%"))).must_equal target
+    end
+
+    it "must edit ./foo.js given root/foo with root as symlink" do
+      touch File.join(@dir, "index.js"), %(require("root/foo"))
+      target = touch File.join(@dir, "foo.js")
+      FileUtils.mkpath File.join(@dir, "node_modules")
+      File.symlink "..", File.join(@dir, "node_modules", "root")
+
+      $vim.edit File.join(@dir, "index.js")
+      $vim.feedkeys "$hhgf"
+      $vim.echo(%(bufname("%"))).must_equal target
+    end
+
+    it "must relativize paths" do
+      touch File.join(@dir, "index.js"), %(require("root/foo"))
+      target = touch File.join(@dir, "foo.js")
+      FileUtils.mkpath File.join(@dir, "node_modules")
+      File.symlink "..", File.join(@dir, "node_modules", "root")
+
+      $vim.edit File.join(@dir, "index.js")
+      $vim.command %(:cd %:h)
+      $vim.feedkeys "$hhgf"
+      $vim.echo(%(bufname("%"))).must_equal File.basename(target)
+    end
+
+    it "must not show an error when searching for nothing" do
+      touch File.join(@dir, "index.js"), %("")
+
+      $vim.edit File.join(@dir, "index.js")
+      $vim.command(%(let v:errmsg = ""))
+      $vim.feedkeys "gf"
+
+      error = $vim.command("let v:errmsg").sub(/^\S+\s*/, "")
+      error.must_equal ""
+    end
+
+    it "must show error when searching for a non-existent file" do
+      touch File.join(@dir, "index.js"), %(require("new"))
+
+      $vim.edit File.join(@dir, "index.js")
+      $vim.command(%(let v:errmsg = ""))
+      $vim.feedkeys "$hhgf"
+
+      error = $vim.command("let v:errmsg").sub(/^\S+\s*/, "")
+      error.must_equal %(E447: Can't find file "new" in path)
+    end
+
+    it "must find when filetype is JavaScript and file exists" do
+      target = touch File.join(@dir, "node_modules", "foo", "index.js")
+
+      touch File.join(@dir, "index.js"), %(require("foo"))
+      $vim.edit File.join(@dir, "index.js")
+      $vim.feedkeys "$hhgf"
+      $vim.echo(%(bufname("%"))).must_equal target
+    end
+
+    it "must find when filetype is JavaScript and file new" do
+      target = touch File.join(@dir, "node_modules", "foo", "index.js")
+
+      $vim.edit File.join(@dir, "index.js")
+      $vim.insert %(require("foo"))
+      $vim.normal
+      $vim.feedkeys "$hhgf"
+      $vim.echo(%(bufname("%"))).must_equal target
+    end
+
+    it "must find when filetype is JSON" do
+      target = touch File.join(@dir, "node_modules", "foo", "index.js")
+
+      # NOTE: Use an extensionless file and set ft manually to not have
+      # filetype.vim set its filetype to JavaScript automatically.
+      $vim.command("au BufReadPre package set ft=json")
+      touch File.join(@dir, "package"), %({"dependencies": {"foo": "1.x"}})
+      $vim.edit File.join(@dir, "package")
+      $vim.echo("&filetype").must_equal "json"
+
+      $vim.feedkeys "/foo\\<CR>gf"
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal target
+    end
+
+    it "must find when filetype set to JavaScript after open" do
+      target = touch File.join(@dir, "node_modules", "foo", "index.js")
+
+      touch File.join(@dir, "index.react"), %(require("foo"))
+      $vim.edit File.join(@dir, "index.react")
+      $vim.echo("&filetype").must_equal ""
+      $vim.command("setfiletype javascript")
+      $vim.echo("&filetype").must_equal "javascript"
+
+      $vim.feedkeys "$hhgf"
+      $vim.echo(%(bufname("%"))).must_equal target
+    end
+
+    it "must find when filetype set to JSX after open" do
+      target = touch File.join(@dir, "node_modules", "foo", "index.js")
+
+      touch File.join(@dir, "index.react"), %(require("foo"))
+      $vim.edit File.join(@dir, "index.react")
+      $vim.echo("&filetype").must_equal ""
+      $vim.command("setfiletype jsx")
+      $vim.echo("&filetype").must_equal "jsx"
+
+      $vim.feedkeys "$hhgf"
+      $vim.echo(%(bufname("%"))).must_equal target
+    end
+
+    it "must find when filetype set to JavaScript and Foo after open" do
+      target = touch File.join(@dir, "node_modules", "foo", "index.js")
+
+      touch File.join(@dir, "index.react"), %(require("foo"))
+      $vim.edit File.join(@dir, "index.react")
+      $vim.echo("&filetype").must_equal ""
+      $vim.command("setfiletype javascript.foo")
+      $vim.echo("&filetype").must_equal "javascript.foo"
+
+      $vim.feedkeys "$hhgf"
+      $vim.echo(%(bufname("%"))).must_equal target
+    end
+
+    # Ensure the autocommand detects both orderings.
+    it "must find when filetype set to Foo and JavaScript after open" do
+      target = touch File.join(@dir, "node_modules", "foo", "index.js")
+
+      touch File.join(@dir, "index.react"), %(require("foo"))
+      $vim.edit File.join(@dir, "index.react")
+      $vim.echo("&filetype").must_equal ""
+      $vim.command("setfiletype foo.javascript")
+      $vim.echo("&filetype").must_equal "foo.javascript"
+
+      $vim.feedkeys "$hhgf"
+      $vim.echo(%(bufname("%"))).must_equal target
+    end
+  end
+
+  describe "Goto file with split" do
+    it "must edit file in a new split" do
+      touch File.join(@dir, "index.js"), %(require("./other"))
+      touch File.join(@dir, "other.js")
+
+      $vim.edit File.join(@dir, "index.js")
+      $vim.feedkeys "f.\\<C-w>f"
+
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "other.js")
+      $vim.echo(%(winnr("$"))).must_equal "2"
+    end
+  end
+
+  describe "Goto file with tab" do
+    it "must edit file in a new tab" do
+      touch File.join(@dir, "index.js"), %(require("./other"))
+      touch File.join(@dir, "other.js")
+
+      $vim.edit File.join(@dir, "index.js")
+      $vim.feedkeys "f.\\<C-w>gf"
+
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "other.js")
+      $vim.echo(%(tabpagenr("$"))).must_equal "2"
+    end
+  end
+
+  describe "Include file search pattern" do
+    it "must find matches given a require" do
+      touch File.join(@dir, "index.js"), <<-end.gsub(/^\s+/, "")
+        var awesome = require("foo")
+        awesome()
+      end
+
+      definition = %(module.exports = function awesome() { return 1337 })
+      touch File.join(@dir, "node_modules", "foo", "index.js"), definition
+
+      $vim.edit File.join(@dir, "index.js")
+      $vim.command("normal G[i").must_equal definition
+    end
+
+    it "must find matches given a relative require" do
+      touch File.join(@dir, "index.js"), <<-end.gsub(/^\s+/, "")
+        var awesome = require("./other")
+        awesome()
+      end
+
+      definition = %(module.exports = function awesome() { return 1337 })
+      touch File.join(@dir, "other.js"), definition
+
+      $vim.edit File.join(@dir, "index.js")
+      $vim.command("normal G[i").must_equal definition
+    end
+
+    it "must find matches given a relative require in another directory" do
+      touch File.join(@dir, "foo", "index.js"), <<-end.gsub(/^\s+/, "")
+        var awesome = require("./other")
+        awesome()
+      end
+
+      definition = %(module.exports = function awesome() { return 1337 })
+      touch File.join(@dir, "foo", "other.js"), definition
+
+      $vim.edit File.join(@dir, "foo", "index.js")
+      $vim.command("normal G[i").must_equal definition
+    end
+  end
+
+  describe ":Nedit" do
+    # NOTE: Test from a non-JavaScript file everywhere to make sure there are
+    # no dependencies on JavaScript specific settings.
+    FULL_COMMAND_MATCH = "2"
+
+    it "must be available in non-JavaScript files" do
+      $vim.edit File.join(@dir, "README.txt")
+      $vim.echo("exists(':Nedit')").must_equal FULL_COMMAND_MATCH
+    end
+
+    it "must be available in JavaScript files" do
+      $vim.edit File.join(@dir, "index.js")
+      $vim.echo("exists(':Nedit')").must_equal FULL_COMMAND_MATCH
+    end
+
+    it "must edit ./README.txt" do
+      touch File.join(@dir, "README.txt")
+      $vim.edit File.join(@dir, "CHANGELOG.txt")
+      $vim.command "Nedit ./README.txt"
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "README.txt")
+    end
+
+    it "must edit ./README.txt relative to node_root" do
+      touch File.join(@dir, "README.txt")
+      Dir.mkdir File.join(@dir, "lib")
+      $vim.edit File.join(@dir, "lib", "CHANGELOG.txt")
+      $vim.command "Nedit ./README.txt"
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "README.txt")
+    end
+
+    it "must edit /.../README.txt" do
+      touch File.join(@dir, "lib", "README.txt")
+      $vim.edit File.join(@dir, "CHANGELOG.txt")
+      $vim.command "Nedit #@dir/lib/README.txt"
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "lib", "README.txt")
+    end
+
+    it "must edit ./other.js relative to node_root" do
+      touch File.join(@dir, "other.js")
+      Dir.mkdir File.join(@dir, "lib")
+      $vim.edit File.join(@dir, "lib", "CHANGELOG.txt")
+      $vim.command "Nedit ./other"
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "other.js")
+    end
+
+    it "must edit ./index.js given ." do
+      touch File.join(@dir, "index.js")
+      $vim.edit File.join(@dir, "CHANGELOG.txt")
+      $vim.command "Nedit ."
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "index.js")
+    end
+
+    it "must edit ./index.js given . relative to node_root" do
+      touch File.join(@dir, "index.js")
+      Dir.mkdir File.join(@dir, "lib")
+      $vim.edit File.join(@dir, "lib", "CHANGELOG.txt")
+      $vim.command "Nedit ."
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "index.js")
+    end
+
+    it "must edit ./index.js given ./" do
+      touch File.join(@dir, "index.js")
+      $vim.edit File.join(@dir, "CHANGELOG.txt")
+      $vim.command "Nedit ./"
+      bufname = File.realpath($vim.echo(%(bufname("%"))))
+      bufname.must_equal File.join(@dir, "index.js")
+    end
+
+    it "must edit /node_modules/foo/index.js given foo" do
+      target = touch File.join(@dir, "node_modules", "foo", "index.js")
+      $vim.edit File.join(@dir, "README.txt")
+      $vim.command("Nedit foo")
+      $vim.echo(%(bufname("%"))).must_equal target
+    end
+
+    describe "completion" do
+      after do
+        $vim.command("set wildignorecase&")
+        $vim.command("set fileignorecase&")
+      end
+
+      def complete(cmd)
+        cmdline = $vim.command(%(silent! normal! :#{cmd}e))
+        cmdline.sub(/^:\w+\s+/, "")
+      end
+
+      public_core_modules = CORE_MODULES.select {|m| m[0] != "_" }
+      private_core_modules = CORE_MODULES.select {|m| m[0] == "_" }
+
+      it "must return files, directories, modules" do
+        Dir.mkdir File.join(@dir, "node_modules")
+        Dir.mkdir File.join(@dir, "node_modules", "require-guard")
+        Dir.mkdir File.join(@dir, "node_modules", "export")
+        Dir.mkdir File.join(@dir, "node_modules", "soul")
+        touch File.join(@dir, "index.js")
+
+        $vim.edit File.join(@dir, "README.txt")
+        files = %w[export/ require-guard/ soul/ ./index.js ./package.json]
+        all = public_core_modules + files
+        complete("Nedit ").split.sort.must_equal all.sort
+      end
+
+      it "must return only public core modules" do
+        $vim.edit File.join(@dir, "README.txt")
+        modules = public_core_modules + ["./package.json"]
+        complete("Nedit ").must_equal modules.join(" ")
+      end
+
+      it "must return private core modules if explicitly asked" do
+        $vim.edit File.join(@dir, "README.txt")
+        complete("Nedit _").must_equal private_core_modules.join(" ")
+      end
+
+      it "must return only matching modules" do
+        Dir.mkdir File.join(@dir, "node_modules")
+        Dir.mkdir File.join(@dir, "node_modules", "export")
+        Dir.mkdir File.join(@dir, "node_modules", "soul")
+        Dir.mkdir File.join(@dir, "node_modules", "soulstash")
+
+        $vim.edit File.join(@dir, "README.txt")
+        modules = "smalloc stream string_decoder sys soul/ soulstash/"
+        complete("Nedit s").must_equal modules
+      end
+
+      it "must not return modules with matching bit in the middle" do
+        Dir.mkdir File.join(@dir, "node_modules")
+        Dir.mkdir File.join(@dir, "node_modules", "soul")
+        Dir.mkdir File.join(@dir, "node_modules", "soulstash")
+        Dir.mkdir File.join(@dir, "node_modules", "asoul")
+
+        $vim.edit File.join(@dir, "README.txt")
+        complete("Nedit sou").must_equal "soul/ soulstash/"
+      end
+
+      it "must return files and directories in module's directory" do
+        touch File.join(@dir, "node_modules", "soul", "index.js")
+        touch File.join(@dir, "node_modules", "soul", "test", "test.js")
+        $vim.edit File.join(@dir, "README.txt")
+        complete("Nedit soul/").must_equal "soul/index.js soul/test/"
+      end
+
+      it "must return files and directories given a double slash" do
+        touch File.join(@dir, "node_modules", "soul", "index.js")
+        touch File.join(@dir, "node_modules", "soul", "test", "test.js")
+        $vim.edit File.join(@dir, "README.txt")
+        complete("Nedit soul//").must_equal "soul//index.js soul//test/"
+      end
+
+      it "must return files case-insensitively given &fileignorecase" do
+        skip if $vim.echo(%(exists("&fileignorecase"))) != "1"
+
+        $vim.command("set fileignorecase")
+        $vim.command("set nowildignorecase")
+
+        touch File.join(@dir, "node_modules", "soul", "index.js")
+        touch File.join(@dir, "node_modules", "soul", "CHANGELOG")
+        $vim.edit File.join(@dir, "README.txt")
+        complete("Nedit soul/chan").must_equal "soul/CHANGELOG"
+      end
+
+      it "must return files case-insensitively given only &wildignorecase" do
+        skip if $vim.echo(%(exists("&wildignorecase"))) != "1"
+
+        $vim.command("set nofileignorecase")
+        $vim.command("set wildignorecase")
+
+        touch File.join(@dir, "node_modules", "soul", "index.js")
+        touch File.join(@dir, "node_modules", "soul", "CHANGELOG")
+        $vim.edit File.join(@dir, "README.txt")
+        complete("Nedit soul/chan").must_equal "soul/CHANGELOG"
+      end
+    end
+  end
+
+  describe ":Nopen" do
+    it "must edit and lcd to module's directory" do
+      touch File.join(@dir, "node_modules", "foo", "package.json")
+      touch File.join(@dir, "node_modules", "foo", "index.js")
+
+      $vim.edit File.join(@dir, "README.txt")
+      $vim.command("vsplit")
+
+      $vim.command("Nopen foo")
+      $vim.echo(%(bufname("%"))).must_equal "index.js"
+      $vim.command("pwd").must_equal File.join(@dir, "node_modules", "foo")
+
+      $vim.command("wincmd p")
+      $vim.command("pwd").must_equal Dir.pwd
+    end
+
+    it "must edit and lcd to module's root directory" do
+      touch File.join(@dir, "node_modules", "foo", "package.json")
+      touch File.join(@dir, "node_modules", "foo", "lib", "utils.js")
+
+      $vim.edit File.join(@dir, "README.txt")
+      $vim.command("vsplit")
+
+      $vim.command("Nopen foo/lib/utils")
+      $vim.echo(%(bufname("%"))).must_equal "lib/utils.js"
+      $vim.command("pwd").must_equal File.join(@dir, "node_modules", "foo")
+
+      $vim.command("wincmd p")
+      $vim.command("pwd").must_equal Dir.pwd
+    end
+  end
+end
diff --git a/dotfiles/.local/share/nvim/site/test/ftdetect_test.rb b/dotfiles/.local/share/nvim/site/test/ftdetect_test.rb
new file mode 100644
index 0000000..b28326e
--- /dev/null
+++ b/dotfiles/.local/share/nvim/site/test/ftdetect_test.rb
@@ -0,0 +1,45 @@
+require_relative "./helper"
+
+describe "Ftdetect" do
+  [
+    "#!/usr/bin/env node",
+    "#!/usr/bin/env node --harmony-generators",
+    "#!/usr/local/bin/env node",
+    "#!/usr/local/bin/env node --harmony-generators",
+    "#!/usr/bin/node",
+    "#!/usr/bin/node --harmony-generators",
+    "#!/usr/local/bin/node",
+    "#!/usr/local/bin/node --harmony-generators",
+
+  ].each do |shebang|
+    it %(must detect a file with "#{shebang}" shebang as JavaScript) do
+      file = Tempfile.new("bang")
+      file.write shebang + $/
+      file.close
+      $vim.edit file.path
+      $vim.echo("&ft").must_equal "javascript"
+    end
+  end
+
+  [
+    "#!/usr/bin/env noder",
+    "#!/usr/bin/noder",
+
+  ].each do |shebang|
+    it %(must not detect a file with "#{shebang}" shebang as JavaScript) do
+      file = Tempfile.new("bang")
+      file.write shebang + $/
+      file.close
+      $vim.edit file.path
+      $vim.echo("&ft").wont_equal "javascript"
+    end
+  end
+
+  it "must not detect a .c file as JavaScript even with Node's shebang" do
+    file = Tempfile.new(%w[tea .c])
+    file.write "#!/usr/bin/node" + $/
+    file.close
+    $vim.edit file.path
+    $vim.echo("&ft").wont_equal "javascript"
+  end
+end
diff --git a/dotfiles/.local/share/nvim/site/test/helper.rb b/dotfiles/.local/share/nvim/site/test/helper.rb
new file mode 100644
index 0000000..5c50977
--- /dev/null
+++ b/dotfiles/.local/share/nvim/site/test/helper.rb
@@ -0,0 +1,54 @@
+require "minitest/autorun"
+require "vimrunner"
+require "fileutils"
+require "tempfile"
+
+MiniTest::Unit::TestCase.define_singleton_method(:test_order) do :alpha end
+
+begin
+  require "minitest/reporters"
+  MiniTest::Reporters.use! MiniTest::Reporters::SpecReporter.new
+rescue LoadError
+end
+
+$vimrc = File.expand_path("../vimrc", __FILE__)
+$vim = Vimrunner::Server.new(:vimrc => $vimrc).start
+Minitest::Unit.after_tests { $vim.kill }
+
+module WithTemporaryDirectory
+  def self.included(base)
+    require "tmpdir"
+  end
+
+  def setup
+    super
+    # Mac has the temporary directory symlinked, so need File.realpath to
+    # match the paths that Vim returns.
+    @dir = File.realpath(Dir.mktmpdir)
+  end
+
+  def teardown
+    FileUtils.remove_entry_secure @dir
+    super
+  end
+end
+
+def touch(path, contents = nil)
+  FileUtils.mkpath File.dirname(path)
+
+  if contents.nil? || contents.empty?
+    FileUtils.touch(path)
+  else
+    File.open(path, "w") {|f| f.write contents }
+  end
+
+  path
+end
+
+CORE_MODULES = %w[_debugger _http_agent _http_client _http_common
+  _http_incoming _http_outgoing _http_server _linklist _stream_duplex
+  _stream_passthrough _stream_readable _stream_transform _stream_writable
+  _tls_legacy _tls_wrap assert buffer child_process cluster console
+  constants crypto dgram dns domain events freelist fs http https module
+  net node os path punycode querystring readline repl smalloc stream
+  string_decoder sys timers tls tty url util vm zlib]
diff --git a/dotfiles/.local/share/nvim/site/test/plugin_test.rb b/dotfiles/.local/share/nvim/site/test/plugin_test.rb
new file mode 100644
index 0000000..722c287
--- /dev/null
+++ b/dotfiles/.local/share/nvim/site/test/plugin_test.rb
@@ -0,0 +1,85 @@
+require_relative "./helper"
+
+describe "Plugin" do
+  include WithTemporaryDirectory
+
+  describe "b:node_root" do
+    it "must be set when in same directory with package.json" do
+      FileUtils.touch File.join(@dir, "package.json")
+      $vim.edit File.join(@dir, "index.js")
+      $vim.echo("b:node_root").must_equal @dir
+    end
+
+    it "must be set when in same directory with node_modules" do
+      Dir.mkdir File.join(@dir, "node_modules")
+      $vim.edit File.join(@dir, "index.js")
+      $vim.echo("b:node_root").must_equal @dir
+    end
+
+    it "must be set when ancestor directory has package.json" do
+      FileUtils.touch File.join(@dir, "package.json")
+
+      nested = File.join(@dir, "lib", "awesomeness")
+      FileUtils.mkdir_p nested
+      $vim.edit File.join(nested, "index.js")
+      $vim.echo("b:node_root").must_equal @dir
+    end
+
+    it "must be set when ancestor directory has node_modules" do
+      Dir.mkdir File.join(@dir, "node_modules")
+
+      nested = File.join(@dir, "lib", "awesomeness")
+      FileUtils.mkdir_p nested
+      $vim.edit File.join(nested, "index.js")
+      $vim.echo("b:node_root").must_equal @dir
+    end
+
+    it "must be set also for other filetypes" do
+      FileUtils.touch File.join(@dir, "package.json")
+
+      $vim.edit File.join(@dir, "README.txt")
+      $vim.echo("b:node_root").must_equal @dir
+    end
+
+    it "must be set in nested Node projects" do
+      nested = File.join(@dir, "node_modules", "require-guard")
+      FileUtils.mkdir_p nested
+      FileUtils.touch File.join(nested, "package.json")
+
+      test = File.join(nested, "test")
+      FileUtils.mkdir_p test
+      $vim.edit File.join(test, "index_test.js")
+      $vim.echo("b:node_root").must_equal nested
+    end
+
+    it "must not be set when no ancestor has one" do
+      $vim.edit File.join(@dir, "index_test.js")
+      $vim.echo(%(exists("b:node_root"))).must_equal "0"
+    end
+
+    it "must be set from file, not working directory" do
+      $vim.command "cd #{@dir}"
+      FileUtils.touch File.join(@dir, "package.json")
+
+      nested = File.join(@dir, "node_modules", "require-guard")
+      FileUtils.mkdir_p nested
+      FileUtils.touch File.join(nested, "package.json")
+
+      $vim.edit File.join(nested, "index_test.js")
+      $vim.echo("b:node_root").must_equal nested
+    end
+
+    it "must detect directory as Node's when opening Vim" do
+      begin
+        Dir.chdir @dir
+        FileUtils.touch File.join(@dir, "package.json")
+
+        vim = Vimrunner::Server.new(:vimrc => $vimrc).start
+        vim.command("pwd").must_equal @dir
+        vim.echo("b:node_root").must_equal @dir
+      ensure
+        vim.kill if vim
+      end
+    end
+  end
+end
diff --git a/dotfiles/.local/share/nvim/site/test/vimrc b/dotfiles/.local/share/nvim/site/test/vimrc
new file mode 100644
index 0000000..2f05b18
--- /dev/null
+++ b/dotfiles/.local/share/nvim/site/test/vimrc
@@ -0,0 +1,14 @@
+set nocompatible
+set noswapfile
+set nobackup
+set hidden
+
+set runtimepath-=~/.vim
+set runtimepath-=~/.vim/after
+let &runtimepath = expand("<sfile>:p:h:h") . "," . &runtimepath
+
+filetype plugin indent on
+syntax on
+
+set columns=80 lines=24
+winpos 1337 0