var assert = require("assert");
var util   = require("../../lib/babel/util");
var parse  = require("../../lib/babel/helpers/parse");
var t      = require("../../lib/babel/types");

suite("util", function () {
  test("invalid template", function () {
    assert.throws(function () {
      util.template("invalid template");
    }, /unknown template/);
  });

  test("templates do not recurse", function () {
    var key = __filename;
    var KEY = parse({ loc: key }, "replacedKey").program.body[0].expression;
    var VALUE = parse({ loc: key }, "+KEY").program.body[0].expression;

    util.templates[key] = util.parseTemplate(key, "KEY = VALUE;");
    var result = util.template(key, {KEY: KEY, VALUE: VALUE});
    delete util.templates[key];

    assert.strictEqual(
      result.right.argument.name,
      "KEY",
      "template should not recurse into replaced nodes, " +
        "replacing KEY inside VALUE"
    );
  });

  test("canCompile", function () {
    assert.ok(util.canCompile("test.js"));
    assert.ok(util.canCompile("/test.js"));
    assert.ok(util.canCompile("/scripts/test.js"));

    assert.ok(util.canCompile("test.es6"));
    assert.ok(util.canCompile("/test.es6"));
    assert.ok(util.canCompile("/scripts/test.es6"));

    assert.ok(util.canCompile("test.es"));
    assert.ok(util.canCompile("/test.es"));
    assert.ok(util.canCompile("/scripts/test.es"));

    assert.ok(util.canCompile("test.jsx"));
    assert.ok(util.canCompile("/test.jsx"));
    assert.ok(util.canCompile("/scripts/test.jsx"));

    assert.ok(!util.canCompile("test"));
    assert.ok(!util.canCompile("test.css"));
    assert.ok(!util.canCompile("/test.css"));
    assert.ok(!util.canCompile("/scripts/test.css"));
  });

  test("list", function () {
    assert.deepEqual(util.list(undefined), []);
    assert.deepEqual(util.list(false), []);
    assert.deepEqual(util.list(null), []);
    assert.deepEqual(util.list(""), []);
    assert.deepEqual(util.list("foo"), ["foo"]);
    assert.deepEqual(util.list("foo,bar"), ["foo", "bar"]);
    assert.deepEqual(util.list(["foo", "bar"]), ["foo", "bar"]);
    assert.deepEqual(util.list(/foo/), [/foo/]);

    var date = new Date;
    assert.deepEqual(util.list(date), [date]);
  });

  test("arrayify", function () {
    assert.deepEqual(util.arrayify(undefined), []);
    assert.deepEqual(util.arrayify(false), []);
    assert.deepEqual(util.arrayify(null), []);
    assert.deepEqual(util.arrayify(""), []);
    assert.deepEqual(util.arrayify("foo"), ["foo"]);
    assert.deepEqual(util.arrayify("foo,bar"), ["foo", "bar"]);
    assert.deepEqual(util.arrayify(["foo", "bar"]), ["foo", "bar"]);

    assert.throws(function () {
      util.arrayify({});
    }, /illegal type for arrayify/);
  });

  test("regexify", function () {
    assert.deepEqual(util.regexify(undefined), /.^/);
    assert.deepEqual(util.regexify(false), /.^/);
    assert.deepEqual(util.regexify(null), /.^/);
    assert.deepEqual(util.regexify(""), /.^/);
    assert.deepEqual(util.regexify(["foo", "bar"]), /foo|bar/i);
    assert.deepEqual(util.regexify("foobar"), /^(?:(?=.)foobar)$/i);
    assert.deepEqual(util.regexify(/foobar/), /foobar/);

    assert.throws(function () {
      util.regexify({});
    }, /illegal type for regexify/);
  });

  test("toIdentifier", function () {
    assert.equal(t.toIdentifier(t.identifier("swag")), "swag");
    assert.equal(t.toIdentifier("swag-lord"), "swagLord");
  });
});