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.hour”);

suite.addBatch({

"hour": {
  topic: load("time/hour").expression("d3.time.hour"),
  "defaults to floor": function(interval) {
    assert.strictEqual(interval, interval.floor);
  },
  "floor": {
    topic: function(interval) {
      return interval.floor;
    },
    "returns hours": function(floor) {
      assert.deepEqual(floor(local(2010, 11, 31, 23, 59)), local(2010, 11, 31, 23));
      assert.deepEqual(floor(local(2011, 00, 01, 00, 00)), local(2011, 00, 01, 00));
      assert.deepEqual(floor(local(2011, 00, 01, 00, 01)), local(2011, 00, 01, 00));
    },
    "observes start of daylight savings time": function(floor) {
      assert.deepEqual(floor(utc(2011, 02, 13, 08, 59)), utc(2011, 02, 13, 08));
      assert.deepEqual(floor(utc(2011, 02, 13, 09, 00)), utc(2011, 02, 13, 09));
      assert.deepEqual(floor(utc(2011, 02, 13, 09, 01)), utc(2011, 02, 13, 09));
      assert.deepEqual(floor(utc(2011, 02, 13, 09, 59)), utc(2011, 02, 13, 09));
      assert.deepEqual(floor(utc(2011, 02, 13, 10, 00)), utc(2011, 02, 13, 10));
      assert.deepEqual(floor(utc(2011, 02, 13, 10, 01)), utc(2011, 02, 13, 10));
    },
    "observes end of daylight savings time": function(floor) {
      assert.deepEqual(floor(utc(2011, 10, 06, 07, 59)), utc(2011, 10, 06, 07));
      assert.deepEqual(floor(utc(2011, 10, 06, 08, 00)), utc(2011, 10, 06, 08));
      assert.deepEqual(floor(utc(2011, 10, 06, 08, 01)), utc(2011, 10, 06, 08));
      assert.deepEqual(floor(utc(2011, 10, 06, 08, 59)), utc(2011, 10, 06, 08));
      assert.deepEqual(floor(utc(2011, 10, 06, 09, 00)), utc(2011, 10, 06, 09));
      assert.deepEqual(floor(utc(2011, 10, 06, 09, 01)), utc(2011, 10, 06, 09));
    },
    "NPT": {
      "observes 15-minute offset": time.zone(345, function(floor) {
        assert.deepEqual(floor(local(2010, 11, 31, 23, 59, 59)), utc(2010, 11, 31, 17, 15));
        assert.deepEqual(floor(local(2011, 00, 01, 00, 00, 00)), utc(2010, 11, 31, 18, 15));
        assert.deepEqual(floor(local(2011, 00, 01, 00, 00, 01)), utc(2010, 11, 31, 18, 15));
      })
    },
    "IST": {
      "observes 30-minute offset": time.zone(330, function(floor) {
        assert.deepEqual(floor(local(2010, 11, 31, 23, 59, 59)), utc(2010, 11, 31, 17, 30));
        assert.deepEqual(floor(local(2011, 00, 01, 00, 00, 00)), utc(2010, 11, 31, 18, 30));
        assert.deepEqual(floor(local(2011, 00, 01, 00, 00, 01)), utc(2010, 11, 31, 18, 30));
      })
    }
  },
  "ceil": {
    topic: function(interval) {
      return interval.ceil;
    },
    "returns hours": function(ceil) {
      assert.deepEqual(ceil(local(2010, 11, 31, 23, 59)), local(2011, 00, 01, 00));
      assert.deepEqual(ceil(local(2011, 00, 01, 00, 00)), local(2011, 00, 01, 00));
      assert.deepEqual(ceil(local(2011, 00, 01, 00, 01)), local(2011, 00, 01, 01));
    },
    "observes start of daylight savings time": function(ceil) {
      assert.deepEqual(ceil(utc(2011, 02, 13, 08, 59)), utc(2011, 02, 13, 09));
      assert.deepEqual(ceil(utc(2011, 02, 13, 09, 00)), utc(2011, 02, 13, 09));
      assert.deepEqual(ceil(utc(2011, 02, 13, 09, 01)), utc(2011, 02, 13, 10));
      assert.deepEqual(ceil(utc(2011, 02, 13, 09, 59)), utc(2011, 02, 13, 10));
      assert.deepEqual(ceil(utc(2011, 02, 13, 10, 00)), utc(2011, 02, 13, 10));
      assert.deepEqual(ceil(utc(2011, 02, 13, 10, 01)), utc(2011, 02, 13, 11));
    },
    "observes end of daylight savings time": function(ceil) {
      assert.deepEqual(ceil(utc(2011, 10, 06, 07, 59)), utc(2011, 10, 06, 08));
      assert.deepEqual(ceil(utc(2011, 10, 06, 08, 00)), utc(2011, 10, 06, 08));
      assert.deepEqual(ceil(utc(2011, 10, 06, 08, 01)), utc(2011, 10, 06, 09));
      assert.deepEqual(ceil(utc(2011, 10, 06, 08, 59)), utc(2011, 10, 06, 09));
      assert.deepEqual(ceil(utc(2011, 10, 06, 09, 00)), utc(2011, 10, 06, 09));
      assert.deepEqual(ceil(utc(2011, 10, 06, 09, 01)), utc(2011, 10, 06, 10));
    },
    "NPT": {
      "observes 15-minute offset": time.zone(345, function(ceil) {
        assert.deepEqual(ceil(local(2010, 11, 31, 23, 59, 59)), utc(2010, 11, 31, 18, 15));
        assert.deepEqual(ceil(local(2011, 00, 01, 00, 00, 00)), utc(2010, 11, 31, 18, 15));
        assert.deepEqual(ceil(local(2011, 00, 01, 00, 00, 01)), utc(2010, 11, 31, 19, 15));
      })
    },
    "IST": {
      "observes 30-minute offset": time.zone(330, function(ceil) {
        assert.deepEqual(ceil(local(2010, 11, 31, 23, 59, 59)), utc(2010, 11, 31, 18, 30));
        assert.deepEqual(ceil(local(2011, 00, 01, 00, 00, 00)), utc(2010, 11, 31, 18, 30));
        assert.deepEqual(ceil(local(2011, 00, 01, 00, 00, 01)), utc(2010, 11, 31, 19, 30));
      })
    }
  },
  "offset": {
    topic: function(interval) {
      return interval.offset;
    },
    "does not modify the passed-in date": function(offset) {
      var date = local(2010, 11, 31, 23, 59, 59, 999);
      offset(date, +1);
      assert.deepEqual(date, local(2010, 11, 31, 23, 59, 59, 999));
    },
    "does not round the passed-in-date": function(offset) {
      assert.deepEqual(offset(local(2010, 11, 31, 23, 59, 59, 999), +1), local(2011, 00, 01, 00, 59, 59, 999));
      assert.deepEqual(offset(local(2010, 11, 31, 23, 59, 59, 456), -2), local(2010, 11, 31, 21, 59, 59, 456));
    },
    "allows negative offsets": function(offset) {
      assert.deepEqual(offset(local(2010, 11, 31, 12), -1), local(2010, 11, 31, 11));
      assert.deepEqual(offset(local(2011, 00, 01, 01), -2), local(2010, 11, 31, 23));
      assert.deepEqual(offset(local(2011, 00, 01, 00), -1), local(2010, 11, 31, 23));
    },
    "allows positive offsets": function(offset) {
      assert.deepEqual(offset(local(2010, 11, 31, 11), +1), local(2010, 11, 31, 12));
      assert.deepEqual(offset(local(2010, 11, 31, 23), +2), local(2011, 00, 01, 01));
      assert.deepEqual(offset(local(2010, 11, 31, 23), +1), local(2011, 00, 01, 00));
    },
    "allows zero offset": function(offset) {
      assert.deepEqual(offset(local(2010, 11, 31, 23, 59, 59, 999), 0), local(2010, 11, 31, 23, 59, 59, 999));
      assert.deepEqual(offset(local(2010, 11, 31, 23, 59, 58, 000), 0), local(2010, 11, 31, 23, 59, 58, 000));
    }
  },
  "UTC": {
    topic: function(interval) {
      return interval.utc;
    },
    "defaults to floor": function(interval) {
      assert.strictEqual(interval, interval.floor);
    },
    "floor": {
      topic: function(interval) {
        return interval.floor;
      },
      "returns hours": function(floor) {
        assert.deepEqual(floor(utc(2010, 11, 31, 23, 59)), utc(2010, 11, 31, 23));
        assert.deepEqual(floor(utc(2011, 00, 01, 00, 00)), utc(2011, 00, 01, 00));
        assert.deepEqual(floor(utc(2011, 00, 01, 00, 01)), utc(2011, 00, 01, 00));
      },
      "does not observe the start of daylight savings time": function(floor) {
        assert.deepEqual(floor(utc(2011, 02, 13, 08, 59)), utc(2011, 02, 13, 08));
        assert.deepEqual(floor(utc(2011, 02, 13, 09, 00)), utc(2011, 02, 13, 09));
        assert.deepEqual(floor(utc(2011, 02, 13, 09, 01)), utc(2011, 02, 13, 09));
        assert.deepEqual(floor(utc(2011, 02, 13, 09, 59)), utc(2011, 02, 13, 09));
        assert.deepEqual(floor(utc(2011, 02, 13, 10, 00)), utc(2011, 02, 13, 10));
        assert.deepEqual(floor(utc(2011, 02, 13, 10, 01)), utc(2011, 02, 13, 10));
      },
      "does not observe the end of daylight savings time": function(floor) {
        assert.deepEqual(floor(utc(2011, 10, 06, 07, 59)), utc(2011, 10, 06, 07));
        assert.deepEqual(floor(utc(2011, 10, 06, 08, 00)), utc(2011, 10, 06, 08));
        assert.deepEqual(floor(utc(2011, 10, 06, 08, 01)), utc(2011, 10, 06, 08));
        assert.deepEqual(floor(utc(2011, 10, 06, 08, 59)), utc(2011, 10, 06, 08));
        assert.deepEqual(floor(utc(2011, 10, 06, 09, 00)), utc(2011, 10, 06, 09));
        assert.deepEqual(floor(utc(2011, 10, 06, 09, 01)), utc(2011, 10, 06, 09));
      }
    },
    "ceil": {
      topic: function(interval) {
        return interval.ceil;
      },
      "returns hours": function(ceil) {
        assert.deepEqual(ceil(utc(2010, 11, 31, 23, 59)), utc(2011, 00, 01, 00));
        assert.deepEqual(ceil(utc(2011, 00, 01, 00, 00)), utc(2011, 00, 01, 00));
        assert.deepEqual(ceil(utc(2011, 00, 01, 00, 01)), utc(2011, 00, 01, 01));
      },
      "does not observe the start of daylight savings time": function(ceil) {
        assert.deepEqual(ceil(utc(2011, 02, 13, 08, 59)), utc(2011, 02, 13, 09));
        assert.deepEqual(ceil(utc(2011, 02, 13, 09, 00)), utc(2011, 02, 13, 09));
        assert.deepEqual(ceil(utc(2011, 02, 13, 09, 01)), utc(2011, 02, 13, 10));
        assert.deepEqual(ceil(utc(2011, 02, 13, 09, 59)), utc(2011, 02, 13, 10));
        assert.deepEqual(ceil(utc(2011, 02, 13, 10, 00)), utc(2011, 02, 13, 10));
        assert.deepEqual(ceil(utc(2011, 02, 13, 10, 01)), utc(2011, 02, 13, 11));
      },
      "does not observe the end of daylight savings time": function(ceil) {
        assert.deepEqual(ceil(utc(2011, 10, 06, 07, 59)), utc(2011, 10, 06, 08));
        assert.deepEqual(ceil(utc(2011, 10, 06, 08, 00)), utc(2011, 10, 06, 08));
        assert.deepEqual(ceil(utc(2011, 10, 06, 08, 01)), utc(2011, 10, 06, 09));
        assert.deepEqual(ceil(utc(2011, 10, 06, 08, 59)), utc(2011, 10, 06, 09));
        assert.deepEqual(ceil(utc(2011, 10, 06, 09, 00)), utc(2011, 10, 06, 09));
        assert.deepEqual(ceil(utc(2011, 10, 06, 09, 01)), utc(2011, 10, 06, 10));
      }
    },
    "offset": {
      topic: function(interval) {
        return interval.offset;
      },
      "does not modify the passed-in date": function(offset) {
        var date = utc(2010, 11, 31, 23, 59, 59, 999);
        offset(date, +1);
        assert.deepEqual(date, utc(2010, 11, 31, 23, 59, 59, 999));
      },
      "does not round the passed-in-date": function(offset) {
        assert.deepEqual(offset(utc(2010, 11, 31, 23, 59, 59, 999), +1), utc(2011, 00, 01, 00, 59, 59, 999));
        assert.deepEqual(offset(utc(2010, 11, 31, 23, 59, 59, 456), -2), utc(2010, 11, 31, 21, 59, 59, 456));
      },
      "allows negative offsets": function(offset) {
        assert.deepEqual(offset(utc(2010, 11, 31, 12), -1), utc(2010, 11, 31, 11));
        assert.deepEqual(offset(utc(2011, 00, 01, 01), -2), utc(2010, 11, 31, 23));
        assert.deepEqual(offset(utc(2011, 00, 01, 00), -1), utc(2010, 11, 31, 23));
      },
      "allows positive offsets": function(offset) {
        assert.deepEqual(offset(utc(2010, 11, 31, 11), +1), utc(2010, 11, 31, 12));
        assert.deepEqual(offset(utc(2010, 11, 31, 23), +2), utc(2011, 00, 01, 01));
        assert.deepEqual(offset(utc(2010, 11, 31, 23), +1), utc(2011, 00, 01, 00));
      },
      "allows zero offset": function(offset) {
        assert.deepEqual(offset(utc(2010, 11, 31, 23, 59, 59, 999), 0), utc(2010, 11, 31, 23, 59, 59, 999));
        assert.deepEqual(offset(utc(2010, 11, 31, 23, 59, 58, 000), 0), utc(2010, 11, 31, 23, 59, 58, 000));
      }
    }
  }
}

});

suite.export(module);