var vows = require(“vows”),

load = require("../load"),
assert = require("../assert"),
time = require("./time"),
local = time.local,
utc = time.utc;

var suite = vows.describe(“d3.time.weeks”);

suite.addBatch({

"weeks": {
  topic: load("time/week").expression("d3.time.weeks"),
  "returns sundays": function(range) {
    assert.deepEqual(range(local(2010, 11, 21), local(2011, 0, 12)), [
      local(2010, 11, 26),
      local(2011, 0, 2),
      local(2011, 0, 9)
    ]);
  },
  "has an inclusive lower bound": function(range) {
    assert.deepEqual(range(local(2010, 11, 21), local(2011, 0, 12))[0], local(2010, 11, 26));
  },
  "has an exclusive upper bound": function(range) {
    assert.deepEqual(range(local(2010, 11, 21), local(2011, 0, 12))[2], local(2011, 0, 9));
  },
  "can skip weeks": function(range) {
    assert.deepEqual(range(local(2011, 0, 1), local(2011, 3, 1), 4), [
      local(2011, 0, 2),
      local(2011, 0, 30),
      local(2011, 1, 27),
      local(2011, 2, 27)
    ]);
  },
  "observes start of daylight savings time": function(range) {
    assert.deepEqual(range(local(2011, 2, 1), local(2011, 2, 28)), [
      local(2011, 2, 6),
      local(2011, 2, 13),
      local(2011, 2, 20),
      local(2011, 2, 27)
    ]);
  },
  "observes end of daylight savings time": function(range) {
    assert.deepEqual(range(local(2011, 10, 1), local(2011, 10, 30)), [
      local(2011, 10, 6),
      local(2011, 10, 13),
      local(2011, 10, 20),
      local(2011, 10, 27)
    ]);
  },
  "UTC": {
    topic: function(range) {
      return range.utc;
    },
    "returns sundays": function(range) {
      assert.deepEqual(range(utc(2010, 11, 21), utc(2011, 0, 12)), [
        utc(2010, 11, 26),
        utc(2011, 0, 2),
        utc(2011, 0, 9)
      ]);
    },
    "has an inclusive lower bound": function(range) {
      assert.deepEqual(range(utc(2010, 11, 21), utc(2011, 0, 12))[0], utc(2010, 11, 26));
    },
    "has an exclusive upper bound": function(range) {
      assert.deepEqual(range(utc(2010, 11, 21), utc(2011, 0, 12))[2], utc(2011, 0, 9));
    },
    "can skip weeks": function(range) {
      assert.deepEqual(range(utc(2011, 0, 1), utc(2011, 3, 1), 4), [
        utc(2011, 0, 2),
        utc(2011, 0, 30),
        utc(2011, 1, 27),
        utc(2011, 2, 27)
      ]);
    },
    "does not observe the start of daylight savings time": function(range) {
      assert.deepEqual(range(utc(2011, 2, 1), utc(2011, 2, 28)), [
        utc(2011, 2, 6),
        utc(2011, 2, 13),
        utc(2011, 2, 20),
        utc(2011, 2, 27)
      ]);
    },
    "does not observe the end of daylight savings time": function(range) {
      assert.deepEqual(range(utc(2011, 10, 1), utc(2011, 10, 30)), [
        utc(2011, 10, 6),
        utc(2011, 10, 13),
        utc(2011, 10, 20),
        utc(2011, 10, 27)
      ]);
    }
  }
}

});

suite.export(module);