require("../env");

require("../../d3");

require("../../d3.time");

var vows = require("vows"),

    assert = require("assert");

var suite = vows.describe("d3.time.day");

suite.addBatch({

  "day": {

    topic: function() {

      return d3.time.day;

    },

    "returns midnights": function(floor) {

      assert.deepEqual(floor(local(2010, 11, 31, 23)), local(2010, 11, 31));

      assert.deepEqual(floor(local(2011, 0, 1, 0)), local(2011, 0, 1));

      assert.deepEqual(floor(local(2011, 0, 1, 1)), local(2011, 0, 1));

    },

    "observes start of daylight savings time": function(floor) {

      assert.deepEqual(floor(utc(2011, 2, 13, 7)), local(2011, 2, 12));

      assert.deepEqual(floor(utc(2011, 2, 13, 8)), local(2011, 2, 13));

      assert.deepEqual(floor(utc(2011, 2, 13, 9)), local(2011, 2, 13));

      assert.deepEqual(floor(utc(2011, 2, 13, 10)), local(2011, 2, 13));

    },

    "observes end of daylight savings time": function(floor) {

      assert.deepEqual(floor(utc(2011, 10, 6, 7)), local(2011, 10, 6));

      assert.deepEqual(floor(utc(2011, 10, 6, 8)), local(2011, 10, 6));

      assert.deepEqual(floor(utc(2011, 10, 6, 9)), local(2011, 10, 6));

      assert.deepEqual(floor(utc(2011, 10, 6, 10)), local(2011, 10, 6));

    },

    "UTC": {

      topic: function(floor) {

        return floor.utc;

      },

      "returns midnights": function(floor) {

        assert.deepEqual(floor(utc(2010, 11, 31, 23)), utc(2010, 11, 31));

        assert.deepEqual(floor(utc(2011, 0, 1, 0)), utc(2011, 0, 1));

        assert.deepEqual(floor(utc(2011, 0, 1, 1)), utc(2011, 0, 1));

      },

      "does not observe the start of daylight savings time": function(floor) {

        assert.deepEqual(floor(utc(2011, 2, 13, 7)), utc(2011, 2, 13));

        assert.deepEqual(floor(utc(2011, 2, 13, 8)), utc(2011, 2, 13));

        assert.deepEqual(floor(utc(2011, 2, 13, 9)), utc(2011, 2, 13));

        assert.deepEqual(floor(utc(2011, 2, 13, 10)), utc(2011, 2, 13));

      },

      "does not observe the end of daylight savings time": function(floor) {

        assert.deepEqual(floor(utc(2011, 10, 6, 5)), utc(2011, 10, 6));

        assert.deepEqual(floor(utc(2011, 10, 6, 6)), utc(2011, 10, 6));

        assert.deepEqual(floor(utc(2011, 10, 6, 7)), utc(2011, 10, 6));

        assert.deepEqual(floor(utc(2011, 10, 6, 8)), utc(2011, 10, 6));

      }

    }

  }

});

function local(year, month, day, hours, minutes, seconds) {

  return new Date(year, month, day, hours || 0, minutes || 0, seconds || 0);

}

function utc(year, month, day, hours, minutes, seconds) {

  return new Date(Date.UTC(year, month, day, hours || 0, minutes || 0, seconds || 0));

}

suite.export(module);