for (var i = 0; i < xLabels.length; i++) {
assertTrue(okLabels[xLabels[i]]);
}
+
+ // This range had issues of its own on tests/daylight-savings.html.
+ g.updateOptions({
+ dateWindow: [1289109997722.8127, 1289261208937.7659]
+ });
+ xLabels = Util.getXLabels();
+ for (var i = 0; i < xLabels.length; i++) {
+ assertTrue(okLabels[xLabels[i]]);
+ }
+};
+
+
+// Tests data which crosses a "fall back" at a high enough frequency that you
+// can see both 1:00 A.M.s.
+AxisLabelsTestCase.prototype.testLabelsCrossDstChangeHighFreq = function() {
+ // Generate data which crosses the EST/EDT boundary.
+ var dst_data = [];
+ var base_ms = 1383454200000;
+ for (var x = base_ms; x < base_ms + 1000 * 60 * 80; x += 1000) {
+ dst_data.push([new Date(x), x]);
+ }
+
+ var g = new Dygraph(
+ document.getElementById("graph"),
+ dst_data,
+ { width: 1024, labels: ['Date', 'Value'] }
+ );
+
+ assertEquals([
+ '00:50', '00:55',
+ '01:00', '01:05', '01:10', '01:15', '01:20', '01:25',
+ '01:30', '01:35', '01:40', '01:45', '01:50', '01:55',
+ '01:00', '01:05' // 1 AM number two!
+ ], Util.getXLabels());
+
+ // Now zoom past the initial 1 AM. This used to cause trouble.
+ g.updateOptions({
+ dateWindow: [1383454200000 + 15*60*1000, g.xAxisExtremes()[1]]}
+ );
+ assertEquals([
+ '01:05', '01:10', '01:15', '01:20', '01:25',
+ '01:30', '01:35', '01:40', '01:45', '01:50', '01:55',
+ '01:00', '01:05' // 1 AM number two!
+ ], Util.getXLabels());
};