grunt.js

module.exports = function (grunt) {

  grunt.initConfig({
    clean:{
      js:{
        files:[
          '<config:concat.src.dest>',
          '<config:concat.tests.dest>',
          '<config:min.dist.dest>'
        ],
        dirs:[
          '<config:coffee.src.dest>',
          '<config:coffee.tests.dest>'
        ]
      },
      css: {
        files: [
          '<config:less.dist.dest>',
          '<config:sqwish.dist.dest>'
        ]
      }
    },

    less:{
      dist:{
        src:'src/main/less/customized.less', dest:'war/css/style.css'
      }
    },
    sqwish:{
      dist:{
        src:'<config:less.dist.dest>', dest:'war/css/style.min.css'
      }
    },

    coffee:{
      src:{
        dir:'src/main/coffee/', dest:'target/js/'
      },
      tests:{
        dir:'src/test/coffee/', dest:'target/js.test/'
      }
    },
    concat:{
      src:{
        src:[ // coffeeファイルを追加する場合はここにも追加する。
          'target/js/lib1.js',
          'target/js/lib2.js',
          'target/js/main.js'
        ],
        dest:'war/js/app.js'
      },
      tests:{
        src:'target/js.test/*.js', dest:'target/tests.js'
      }
    },
    min:{
      dist:{
        src:'<config:concat.src.dest>', dest:'war/js/app.min.js'
      }
    },
    qunit:{
      files:'src/test/qunit/*.html'
    },

    watch:{
      coffee:{
        files:['src/main/coffee/**/*.coffee', 'src/test/coffee/**/*.coffee', 'src/main/less/**/*.less'],
        tasks:'coffee concat min'
      },
      less:{
        files:['src/main/less/**/*.less'],
        tasks:'less sqwish'
      }
    }
  });

  // Default task.
  grunt.registerTask('default', 'coffee concat min less sqwish qunit');


  //
  // register custom tasks and helpers.
  //

  var log = grunt.log;
  var exec = require('child_process').exec;

  grunt.registerHelper('exec', function (opts, done) {
    var command = opts.cmd + ' ' + opts.args.join(' ');
    exec(command, opts.opts, function (code, stdout, stderr) {
      if (!done) return;
      if (code === 0) {
        done(null, stdout, code);
      } else {
        done(code, stderr, code);
      }
    });
  });

  var handleResult = function handleResult(err, stdout, code, done) {
    if (err) {
      log.writeln(stdout);
      done(false);
    } else {
      done(true);
    }
  };

  // task: coffee
  (function (grunt) {
    grunt.registerHelper('coffeec', function (fromdir, dest, done) {
      var args = { cmd:'coffee', args:[ '--compile', '--output', dest, fromdir ] };
      grunt.helper('exec', args, function (err, stdout, code) {
        handleResult(err, stdout, code, done);
      });
    });

    grunt.registerMultiTask('coffee', 'compile CoffeeScript', function () {
      grunt.helper('coffeec', this.data.dir, this.data.dest, this.async());
    });
  }(grunt));

  // task: less.
  (function (grunt) {
    grunt.registerHelper('lessc', function (from, dest, done) {
      var args = { cmd:'lessc', args:[ '--compress', from, dest] };
      grunt.helper('exec', args, function (err, stdout, code) {
        handleResult(err, stdout, code, done);
      });
    });

    grunt.registerMultiTask('less', 'compile less', function () {
      grunt.helper('lessc', this.data.src, this.data.dest, this.async());
    });
  }(grunt));

  // task: sqwish
  (function (grunt) {
    grunt.registerHelper('sqwishc', function (from, dest, done) {
      var args = { cmd:'sqwish', args:[ from, '--output', dest] };
      grunt.helper('exec', args, function (err, stdout, code) {
        handleResult(err, stdout, code, done);
      });
    });

    grunt.registerMultiTask('sqwish', 'minify css', function () {
      grunt.helper('sqwishc', this.data.src, this.data.dest, this.async());
    });
  }(grunt));

  // task: clean
  (function (grunt) {
    grunt.registerHelper('rm', function (targets, done) {
      for (i in targets) {
        var target = targets[i];
        var args = { cmd:'rm -f', args:[ target ] };
        grunt.helper('exec', args, function (err, stdout, code) {
          handleResult(err, stdout, code, done);
        });
      }
    });
    grunt.registerHelper('rd', function (targets, done) {
      for (i in targets) {
        var target = targets[i];
        var args = { cmd:'rm -rf', args:[ target ] };
        grunt.helper('exec', args, function (err, stdout, code) {
          handleResult(err, stdout, code, done);
        });
      }
    });

    grunt.registerMultiTask('clean', 'compile less', function () {
      if (this.data.files) {
        grunt.helper('rm', this.data.files, this.async());
      }
      if (this.data.dirs) {
        grunt.helper('rd', this.data.dirs, this.async());
      }
    });
  }(grunt));
};

qunit.html

<!DOCTYPE html>
<html lang="ja">
<head>
	<meta charset="utf-8"/>
	<title>Tests</title>
	<link rel="stylesheet" href="qunit.css"/>
</head>
<body>
<div id="qunit"></div>
<script src="qunit.js"></script>
<script src="sinon-1.3.4.js"></script>

<!-- ライブラリを追加する場合はここにも追加する -->
<script src="../../../war/js/jquery-1.7.2.min.js"></script>
<script src="../../../war/js/jquery.ba-hashchange.min.js"></script>

<script src="../../../war/js/app.min.js"></script>
<script src="../../../target/tests.js"></script>

<script>
</script>
</body>
</html>