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hours-test.js
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require("../env");
var vows = require("vows"),
assert = require("assert"),
time = require("./time"),
local = time.local,
utc = time.utc;
var suite = vows.describe("d3.time.hours");
suite.addBatch({
"hours": {
topic: function() {
return d3.time.hours;
},
"returns hours": function(range) {
assert.deepEqual(range(local(2010, 11, 31, 12, 30), local(2010, 11, 31, 15, 30)), [
local(2010, 11, 31, 13),
local(2010, 11, 31, 14),
local(2010, 11, 31, 15)
]);
},
"has an inclusive lower bound": function(range) {
assert.deepEqual(range(local(2010, 11, 31, 23), local(2011, 0, 1, 2))[0], local(2010, 11, 31, 23));
},
"has an exclusive upper bound": function(range) {
assert.deepEqual(range(local(2010, 11, 31, 23), local(2011, 0, 1, 2))[2], local(2011, 0, 1, 1));
},
"can skip hours": function(range) {
assert.deepEqual(range(local(2011, 1, 1, 1), local(2011, 1, 1, 13), 3), [
local(2011, 1, 1, 3),
local(2011, 1, 1, 6),
local(2011, 1, 1, 9),
local(2011, 1, 1, 12)
]);
},
"observes start of daylight savings time": function(range) {
assert.deepEqual(range(local(2011, 2, 13, 1), local(2011, 2, 13, 5)), [
utc(2011, 2, 13, 9),
utc(2011, 2, 13, 10),
utc(2011, 2, 13, 11)
]);
},
"observes end of daylight savings time": function(range) {
assert.deepEqual(range(local(2011, 10, 6, 0), local(2011, 10, 6, 2)), [
utc(2011, 10, 6, 7),
utc(2011, 10, 6, 8),
utc(2011, 10, 6, 9)
]);
},
"NPT": {
"observes 15-minute offset": tz("Asia/Kathmandu", function(range) {
assert.deepEqual(range(local(2011, 10, 7, 0), local(2011, 10, 7, 3)), [
utc(2011, 10, 6, 18, 15),
utc(2011, 10, 6, 19, 15),
utc(2011, 10, 6, 20, 15)
]);
})
},
"IST": {
"observes 30-minute offset": tz("Asia/Calcutta", function(range) {
assert.deepEqual(range(local(2011, 10, 7, 0), local(2011, 10, 7, 3)), [
utc(2011, 10, 6, 18, 30),
utc(2011, 10, 6, 19, 30),
utc(2011, 10, 6, 20, 30)
]);
})
},
"UTC": {
topic: function(range) {
return range.utc;
},
"returns hours": function(range) {
assert.deepEqual(range(utc(2010, 11, 31, 12, 30), utc(2010, 11, 31, 15, 30)), [
utc(2010, 11, 31, 13),
utc(2010, 11, 31, 14),
utc(2010, 11, 31, 15)
]);
},
"has an inclusive lower bound": function(range) {
assert.deepEqual(range(utc(2010, 11, 31, 23), utc(2011, 0, 1, 2))[0], utc(2010, 11, 31, 23));
},
"has an exclusive upper bound": function(range) {
assert.deepEqual(range(utc(2010, 11, 31, 23), utc(2011, 0, 1, 2))[2], utc(2011, 0, 1, 1));
},
"can skip hours": function(range) {
assert.deepEqual(range(utc(2011, 1, 1, 1), utc(2011, 1, 1, 13), 3), [
utc(2011, 1, 1, 3),
utc(2011, 1, 1, 6),
utc(2011, 1, 1, 9),
utc(2011, 1, 1, 12)
]);
},
"observes start of daylight savings time": function(range) {
assert.deepEqual(range(utc(2011, 2, 13, 9), utc(2011, 2, 13, 12)), [
utc(2011, 2, 13, 9),
utc(2011, 2, 13, 10),
utc(2011, 2, 13, 11)
]);
},
"observes end of daylight savings time": function(range) {
assert.deepEqual(range(utc(2011, 10, 6, 7), utc(2011, 10, 6, 10)), [
utc(2011, 10, 6, 7),
utc(2011, 10, 6, 8),
utc(2011, 10, 6, 9)
]);
}
}
}
});
function tz(tz, scope) {
return function() {
var o = process.env.TZ;
try {
process.env.TZ = tz;
new Date(0).toString(); // invalidate node's dst cache
new Date().toString();
scope.apply(this, arguments);
} finally {
process.env.TZ = o;
new Date(0).toString(); // invalidate node's dst cache
new Date().toString();
}
};
}
suite.export(module);