diff -r efd9c589177a -r c0b4a8b5a012 toolkit/javascript/d3/test/time/scale-test.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/test/time/scale-test.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,525 @@
+require("../env");
+require("../../d3");
+require("../../d3.time");
+
+var vows = require("vows"),
+    assert = require("assert");
+
+var suite = vows.describe("d3.time.scale");
+
+suite.addBatch({
+  "scale": {
+    topic: function() {
+      return d3.time.scale;
+    },
+
+    "copy": {
+      "changes to the domain are isolated": function(scale) {
+        var x = scale().domain([local(2009, 0, 1), local(2010, 0, 1)]), y = x.copy();
+        x.domain([local(2010, 0, 1), local(2011, 0, 1)]);
+        assert.deepEqual(y.domain(), [local(2009, 0, 1), local(2010, 0, 1)]);
+        assert.equal(x(local(2010, 0, 1)), 0);
+        assert.equal(y(local(2010, 0, 1)), 1);
+        y.domain([local(2011, 0, 1), local(2012, 0, 1)]);
+        assert.equal(x(local(2011, 0, 1)), 1);
+        assert.equal(y(local(2011, 0, 1)), 0);
+        assert.deepEqual(x.domain(), [local(2010, 0, 1), local(2011, 0, 1)]);
+        assert.deepEqual(y.domain(), [local(2011, 0, 1), local(2012, 0, 1)]);
+      },
+      "changes to the range are isolated": function(scale) {
+        var x = scale().domain([local(2009, 0, 1), local(2010, 0, 1)]), y = x.copy();
+        x.range([1, 2]);
+        assert.deepEqual(x.invert(1), local(2009, 0, 1));
+        assert.deepEqual(y.invert(1), local(2010, 0, 1));
+        assert.deepEqual(y.range(), [0, 1]);
+        y.range([2, 3]);
+        assert.deepEqual(x.invert(2), local(2010, 0, 1));
+        assert.deepEqual(y.invert(2), local(2009, 0, 1));
+        assert.deepEqual(x.range(), [1, 2]);
+        assert.deepEqual(y.range(), [2, 3]);
+      },
+      "changes to the interpolator are isolated": function(scale) {
+        var x = scale().domain([local(2009, 0, 1), local(2010, 0, 1)]).range(["red", "blue"]), y = x.copy();
+        x.interpolate(d3.interpolateHsl);
+        assert.equal(x(local(2009, 6, 1)), "#04ff00");
+        assert.equal(y(local(2009, 6, 1)), "#81007e");
+        assert.equal(y.interpolate(), d3.interpolate);
+      },
+      "changes to clamping are isolated": function(scale) {
+        var x = scale().domain([local(2009, 0, 1), local(2010, 0, 1)]).clamp(true), y = x.copy();
+        x.clamp(false);
+        assert.equal(x(local(2011, 0, 1)), 2);
+        assert.equal(y(local(2011, 0, 1)), 1);
+        assert.isTrue(y.clamp());
+        y.clamp(false);
+        assert.equal(x(local(2011, 0, 1)), 2);
+        assert.equal(y(local(2011, 0, 1)), 2);
+        assert.isFalse(x.clamp());
+      }
+    },
+
+    "ticks": {
+      "observes explicit tick interval": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 12, 1, 0), local(2011, 0, 1, 12, 4, 4)]);
+        assert.deepEqual(x.ticks(d3.time.minutes), [
+          local(2011, 0, 1, 12, 1),
+          local(2011, 0, 1, 12, 2),
+          local(2011, 0, 1, 12, 3),
+          local(2011, 0, 1, 12, 4)
+        ]);
+      },
+      "observes explicit tick interval and step": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 12, 0, 0), local(2011, 0, 1, 12, 33, 4)]);
+        assert.deepEqual(x.ticks(d3.time.minutes, 10), [
+          local(2011, 0, 1, 12, 0),
+          local(2011, 0, 1, 12, 10),
+          local(2011, 0, 1, 12, 20),
+          local(2011, 0, 1, 12, 30)
+        ]);
+      },
+      "generates 1-second ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 12, 0, 0), local(2011, 0, 1, 12, 0, 4)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 1, 12, 0, 0),
+          local(2011, 0, 1, 12, 0, 1),
+          local(2011, 0, 1, 12, 0, 2),
+          local(2011, 0, 1, 12, 0, 3)
+        ]);
+      },
+      "generates 5-second ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 12, 0, 0), local(2011, 0, 1, 12, 0, 20)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 1, 12, 0, 0),
+          local(2011, 0, 1, 12, 0, 5),
+          local(2011, 0, 1, 12, 0, 10),
+          local(2011, 0, 1, 12, 0, 15)
+        ]);
+      },
+      "generates 15-second ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 12, 0, 0), local(2011, 0, 1, 12, 0, 50)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 1, 12, 0, 0),
+          local(2011, 0, 1, 12, 0, 15),
+          local(2011, 0, 1, 12, 0, 30),
+          local(2011, 0, 1, 12, 0, 45)
+        ]);
+      },
+      "generates 30-second ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 12, 0, 0), local(2011, 0, 1, 12, 1, 50)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 1, 12, 0, 0),
+          local(2011, 0, 1, 12, 0, 30),
+          local(2011, 0, 1, 12, 1, 0),
+          local(2011, 0, 1, 12, 1, 30)
+        ]);
+      },
+      "generates 1-minute ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 12, 0, 27), local(2011, 0, 1, 12, 4, 12)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 1, 12, 1),
+          local(2011, 0, 1, 12, 2),
+          local(2011, 0, 1, 12, 3),
+          local(2011, 0, 1, 12, 4)
+        ]);
+      },
+      "generates 5-minute ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 12, 3, 27), local(2011, 0, 1, 12, 21, 12)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 1, 12, 5),
+          local(2011, 0, 1, 12, 10),
+          local(2011, 0, 1, 12, 15),
+          local(2011, 0, 1, 12, 20)
+        ]);
+      },
+      "generates 15-minute ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 12, 8, 27), local(2011, 0, 1, 13, 4, 12)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 1, 12, 15),
+          local(2011, 0, 1, 12, 30),
+          local(2011, 0, 1, 12, 45),
+          local(2011, 0, 1, 13, 0)
+        ]);
+      },
+      "generates 30-minute ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 12, 28, 27), local(2011, 0, 1, 14, 4, 12)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 1, 12, 30),
+          local(2011, 0, 1, 13, 0),
+          local(2011, 0, 1, 13, 30),
+          local(2011, 0, 1, 14, 0)
+        ]);
+      },
+      "generates 1-hour ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 12, 28, 27), local(2011, 0, 1, 16, 34, 12)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 1, 13, 0),
+          local(2011, 0, 1, 14, 0),
+          local(2011, 0, 1, 15, 0),
+          local(2011, 0, 1, 16, 0)
+        ]);
+      },
+      "generates 3-hour ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 14, 28, 27), local(2011, 0, 2, 1, 34, 12)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 1, 15, 0),
+          local(2011, 0, 1, 18, 0),
+          local(2011, 0, 1, 21, 0),
+          local(2011, 0, 2, 0, 0)
+        ]);
+      },
+      "generates 6-hour ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 16, 28, 27), local(2011, 0, 2, 14, 34, 12)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 1, 18, 0),
+          local(2011, 0, 2, 0, 0),
+          local(2011, 0, 2, 6, 0),
+          local(2011, 0, 2, 12, 0)
+        ]);
+      },
+      "generates 12-hour ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 16, 28, 27), local(2011, 0, 3, 21, 34, 12)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 2, 0, 0),
+          local(2011, 0, 2, 12, 0),
+          local(2011, 0, 3, 0, 0),
+          local(2011, 0, 3, 12, 0)
+        ]);
+      },
+      "generates 1-day ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 16, 28, 27), local(2011, 0, 5, 21, 34, 12)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 2, 0, 0),
+          local(2011, 0, 3, 0, 0),
+          local(2011, 0, 4, 0, 0),
+          local(2011, 0, 5, 0, 0)
+        ]);
+      },
+      "generates 2-day ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 2, 16, 28, 27), local(2011, 0, 9, 21, 34, 12)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 3, 0, 0),
+          local(2011, 0, 5, 0, 0),
+          local(2011, 0, 7, 0, 0),
+          local(2011, 0, 9, 0, 0)
+        ]);
+      },
+      "generates 1-week ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 1, 16, 28, 27), local(2011, 0, 23, 21, 34, 12)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 2, 0, 0),
+          local(2011, 0, 9, 0, 0),
+          local(2011, 0, 16, 0, 0),
+          local(2011, 0, 23, 0, 0)
+        ]);
+      },
+      "generates 1-month ticks": function(scale) {
+        var x = scale().domain([local(2011, 0, 18), local(2011, 4, 2)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 1, 1, 0, 0),
+          local(2011, 2, 1, 0, 0),
+          local(2011, 3, 1, 0, 0),
+          local(2011, 4, 1, 0, 0)
+        ]);
+      },
+      "generates 3-month ticks": function(scale) {
+        var x = scale().domain([local(2010, 11, 18), local(2011, 10, 2)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 1, 0, 0),
+          local(2011, 3, 1, 0, 0),
+          local(2011, 6, 1, 0, 0),
+          local(2011, 9, 1, 0, 0)
+        ]);
+      },
+      "generates 1-year ticks": function(scale) {
+        var x = scale().domain([local(2010, 11, 18), local(2014, 2, 2)]);
+        assert.deepEqual(x.ticks(4), [
+          local(2011, 0, 1, 0, 0),
+          local(2012, 0, 1, 0, 0),
+          local(2013, 0, 1, 0, 0),
+          local(2014, 0, 1, 0, 0)
+        ]);
+      }
+    },
+
+    "tickFormat": {
+      topic: function(scale) {
+        return scale().tickFormat();
+      },
+      "formats year on New Year's": function(format) {
+        assert.equal(format(local(2011, 0, 1)), "2011");
+        assert.equal(format(local(2012, 0, 1)), "2012");
+        assert.equal(format(local(2013, 0, 1)), "2013");
+      },
+      "formats month on the 1st of each month": function(format) {
+        assert.equal(format(local(2011, 1, 1)), "February");
+        assert.equal(format(local(2011, 2, 1)), "March");
+        assert.equal(format(local(2011, 3, 1)), "April");
+      },
+      "formats week on Sunday midnight": function(format) {
+        assert.equal(format(local(2011, 1, 6)), "Feb 06");
+        assert.equal(format(local(2011, 1, 13)), "Feb 13");
+        assert.equal(format(local(2011, 1, 20)), "Feb 20");
+      },
+      "formats date on midnight": function(format) {
+        assert.equal(format(local(2011, 1, 2)), "Wed 02");
+        assert.equal(format(local(2011, 1, 3)), "Thu 03");
+        assert.equal(format(local(2011, 1, 4)), "Fri 04");
+      },
+      "formats hour on minute zero": function(format) {
+        assert.equal(format(local(2011, 1, 2, 11)), "11 AM");
+        assert.equal(format(local(2011, 1, 2, 12)), "12 PM");
+        assert.equal(format(local(2011, 1, 2, 13)), "01 PM");
+      },
+      "formats minute on second zero": function(format) {
+        assert.equal(format(local(2011, 1, 2, 11, 59)), "11:59");
+        assert.equal(format(local(2011, 1, 2, 12, 01)), "12:01");
+        assert.equal(format(local(2011, 1, 2, 12, 02)), "12:02");
+      },
+      "otherwise, formats second": function(format) {
+        assert.equal(format(local(2011, 1, 2, 12, 01, 09)), ":09");
+        assert.equal(format(local(2011, 1, 2, 12, 01, 10)), ":10");
+        assert.equal(format(local(2011, 1, 2, 12, 01, 11)), ":11");
+      }
+    },
+
+    "UTC": {
+      topic: function(scale) {
+        return scale.utc;
+      },
+
+      "ticks": {
+        "observes explicit tick interval": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 12, 1, 0), utc(2011, 0, 1, 12, 4, 4)]);
+          assert.deepEqual(x.ticks(d3.time.minutes), [
+            utc(2011, 0, 1, 12, 1),
+            utc(2011, 0, 1, 12, 2),
+            utc(2011, 0, 1, 12, 3),
+            utc(2011, 0, 1, 12, 4)
+          ]);
+        },
+        "observes explicit tick interval and step": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 12, 0, 0), utc(2011, 0, 1, 12, 33, 4)]);
+          assert.deepEqual(x.ticks(d3.time.minutes, 10), [
+            utc(2011, 0, 1, 12, 0),
+            utc(2011, 0, 1, 12, 10),
+            utc(2011, 0, 1, 12, 20),
+            utc(2011, 0, 1, 12, 30)
+          ]);
+        },
+        "generates 1-second ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 12, 0, 0), utc(2011, 0, 1, 12, 0, 4)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 1, 12, 0, 0),
+            utc(2011, 0, 1, 12, 0, 1),
+            utc(2011, 0, 1, 12, 0, 2),
+            utc(2011, 0, 1, 12, 0, 3)
+          ]);
+        },
+        "generates 5-second ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 12, 0, 0), utc(2011, 0, 1, 12, 0, 20)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 1, 12, 0, 0),
+            utc(2011, 0, 1, 12, 0, 5),
+            utc(2011, 0, 1, 12, 0, 10),
+            utc(2011, 0, 1, 12, 0, 15)
+          ]);
+        },
+        "generates 15-second ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 12, 0, 0), utc(2011, 0, 1, 12, 0, 50)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 1, 12, 0, 0),
+            utc(2011, 0, 1, 12, 0, 15),
+            utc(2011, 0, 1, 12, 0, 30),
+            utc(2011, 0, 1, 12, 0, 45)
+          ]);
+        },
+        "generates 30-second ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 12, 0, 0), utc(2011, 0, 1, 12, 1, 50)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 1, 12, 0, 0),
+            utc(2011, 0, 1, 12, 0, 30),
+            utc(2011, 0, 1, 12, 1, 0),
+            utc(2011, 0, 1, 12, 1, 30)
+          ]);
+        },
+        "generates 1-minute ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 12, 0, 27), utc(2011, 0, 1, 12, 4, 12)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 1, 12, 1),
+            utc(2011, 0, 1, 12, 2),
+            utc(2011, 0, 1, 12, 3),
+            utc(2011, 0, 1, 12, 4)
+          ]);
+        },
+        "generates 5-minute ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 12, 3, 27), utc(2011, 0, 1, 12, 21, 12)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 1, 12, 5),
+            utc(2011, 0, 1, 12, 10),
+            utc(2011, 0, 1, 12, 15),
+            utc(2011, 0, 1, 12, 20)
+          ]);
+        },
+        "generates 15-minute ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 12, 8, 27), utc(2011, 0, 1, 13, 4, 12)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 1, 12, 15),
+            utc(2011, 0, 1, 12, 30),
+            utc(2011, 0, 1, 12, 45),
+            utc(2011, 0, 1, 13, 0)
+          ]);
+        },
+        "generates 30-minute ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 12, 28, 27), utc(2011, 0, 1, 14, 4, 12)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 1, 12, 30),
+            utc(2011, 0, 1, 13, 0),
+            utc(2011, 0, 1, 13, 30),
+            utc(2011, 0, 1, 14, 0)
+          ]);
+        },
+        "generates 1-hour ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 12, 28, 27), utc(2011, 0, 1, 16, 34, 12)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 1, 13, 0),
+            utc(2011, 0, 1, 14, 0),
+            utc(2011, 0, 1, 15, 0),
+            utc(2011, 0, 1, 16, 0)
+          ]);
+        },
+        "generates 3-hour ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 14, 28, 27), utc(2011, 0, 2, 1, 34, 12)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 1, 15, 0),
+            utc(2011, 0, 1, 18, 0),
+            utc(2011, 0, 1, 21, 0),
+            utc(2011, 0, 2, 0, 0)
+          ]);
+        },
+        "generates 6-hour ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 16, 28, 27), utc(2011, 0, 2, 14, 34, 12)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 1, 18, 0),
+            utc(2011, 0, 2, 0, 0),
+            utc(2011, 0, 2, 6, 0),
+            utc(2011, 0, 2, 12, 0)
+          ]);
+        },
+        "generates 12-hour ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 16, 28, 27), utc(2011, 0, 3, 21, 34, 12)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 2, 0, 0),
+            utc(2011, 0, 2, 12, 0),
+            utc(2011, 0, 3, 0, 0),
+            utc(2011, 0, 3, 12, 0)
+          ]);
+        },
+        "generates 1-day ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 16, 28, 27), utc(2011, 0, 5, 21, 34, 12)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 2, 0, 0),
+            utc(2011, 0, 3, 0, 0),
+            utc(2011, 0, 4, 0, 0),
+            utc(2011, 0, 5, 0, 0)
+          ]);
+        },
+        "generates 2-day ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 2, 16, 28, 27), utc(2011, 0, 9, 21, 34, 12)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 3, 0, 0),
+            utc(2011, 0, 5, 0, 0),
+            utc(2011, 0, 7, 0, 0),
+            utc(2011, 0, 9, 0, 0)
+          ]);
+        },
+        "generates 1-week ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 1, 16, 28, 27), utc(2011, 0, 23, 21, 34, 12)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 2, 0, 0),
+            utc(2011, 0, 9, 0, 0),
+            utc(2011, 0, 16, 0, 0),
+            utc(2011, 0, 23, 0, 0)
+          ]);
+        },
+        "generates 1-month ticks": function(scale) {
+          var x = scale().domain([utc(2011, 0, 18), utc(2011, 4, 2)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 1, 1, 0, 0),
+            utc(2011, 2, 1, 0, 0),
+            utc(2011, 3, 1, 0, 0),
+            utc(2011, 4, 1, 0, 0)
+          ]);
+        },
+        "generates 3-month ticks": function(scale) {
+          var x = scale().domain([utc(2010, 11, 18), utc(2011, 10, 2)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 1, 0, 0),
+            utc(2011, 3, 1, 0, 0),
+            utc(2011, 6, 1, 0, 0),
+            utc(2011, 9, 1, 0, 0)
+          ]);
+        },
+        "generates 1-year ticks": function(scale) {
+          var x = scale().domain([utc(2010, 11, 18), utc(2014, 2, 2)]);
+          assert.deepEqual(x.ticks(4), [
+            utc(2011, 0, 1, 0, 0),
+            utc(2012, 0, 1, 0, 0),
+            utc(2013, 0, 1, 0, 0),
+            utc(2014, 0, 1, 0, 0)
+          ]);
+        }
+      },
+
+      "tickFormat": {
+        topic: function(scale) {
+          return scale().tickFormat();
+        },
+        "formats year on New Year's": function(format) {
+          assert.equal(format(utc(2011, 0, 1)), "2011");
+          assert.equal(format(utc(2012, 0, 1)), "2012");
+          assert.equal(format(utc(2013, 0, 1)), "2013");
+        },
+        "formats month on the 1st of each month": function(format) {
+          assert.equal(format(utc(2011, 1, 1)), "February");
+          assert.equal(format(utc(2011, 2, 1)), "March");
+          assert.equal(format(utc(2011, 3, 1)), "April");
+        },
+        "formats week on Sunday midnight": function(format) {
+          assert.equal(format(utc(2011, 1, 6)), "Feb 06");
+          assert.equal(format(utc(2011, 1, 13)), "Feb 13");
+          assert.equal(format(utc(2011, 1, 20)), "Feb 20");
+        },
+        "formats date on midnight": function(format) {
+          assert.equal(format(utc(2011, 1, 2)), "Wed 02");
+          assert.equal(format(utc(2011, 1, 3)), "Thu 03");
+          assert.equal(format(utc(2011, 1, 4)), "Fri 04");
+        },
+        "formats hour on minute zero": function(format) {
+          assert.equal(format(utc(2011, 1, 2, 11)), "11 AM");
+          assert.equal(format(utc(2011, 1, 2, 12)), "12 PM");
+          assert.equal(format(utc(2011, 1, 2, 13)), "01 PM");
+        },
+        "formats minute on second zero": function(format) {
+          assert.equal(format(utc(2011, 1, 2, 11, 59)), "11:59");
+          assert.equal(format(utc(2011, 1, 2, 12, 01)), "12:01");
+          assert.equal(format(utc(2011, 1, 2, 12, 02)), "12:02");
+        },
+        "otherwise, formats second": function(format) {
+          assert.equal(format(utc(2011, 1, 2, 12, 01, 09)), ":09");
+          assert.equal(format(utc(2011, 1, 2, 12, 01, 10)), ":10");
+          assert.equal(format(utc(2011, 1, 2, 12, 01, 11)), ":11");
+        }
+      }
+    }
+  }
+});
+
+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);