*/
var stackedTestCase = TestCase("stacked");
+stackedTestCase._origGetContext = Dygraph.getContext;
+
stackedTestCase.prototype.setUp = function() {
document.body.innerHTML = "<div id='graph'></div>";
+ Dygraph.getContext = function(canvas) {
+ return new Proxy(stackedTestCase._origGetContext(canvas));
+ }
};
stackedTestCase.prototype.tearDown = function() {
+ Dygraph.getContext = stackedTestCase._origGetContext;
};
stackedTestCase.prototype.testCorrectColors = function() {
width: 400,
height: 300,
stackedGraph: true,
- drawXGrid: false,
- drawYGrid: false,
- drawXAxis: false,
- drawYAxis: false,
+ axes : {
+ x : {
+ drawGrid: false,
+ drawAxis: false,
+ },
+ y : {
+ drawGrid: false,
+ drawAxis: false,
+ }
+ },
valueRange: [0, 3],
colors: ['#00ff00', '#0000ff'],
fillAlpha: 0.15
// y pixel 100 = y1 line (green)
// y pixels 0-99 = nothing (white)
- // TODO(danvk): factor this and getPixel() into a utility usable by all tests.
- var ctx = g.hidden_ctx_;
- var imageData = ctx.getImageData(0, 0, 400, 300);
-
- assertEquals(400, imageData.width);
- assertEquals(300, imageData.height);
-
- // returns an (r, g, b, alpha) tuple for the pixel.
- // values are in [0, 255].
- var getPixel = function(imageData, x, y) {
- var i = 4 * (x + imageData.width * y);
- var d = imageData.data;
- return [d[i], d[i+1], d[i+2], d[i+3]];
- };
-
// 38 = round(0.15 * 255)
- assertEquals([0, 0, 255, 38], getPixel(imageData, 200, 250));
- assertEquals([0, 255, 0, 38], getPixel(imageData, 200, 150));
+ assertEquals([0, 0, 255, 38], Util.samplePixel(g.hidden_, 200, 250));
+ assertEquals([0, 255, 0, 38], Util.samplePixel(g.hidden_, 200, 150));
};
// Regression test for http://code.google.com/p/dygraphs/issues/detail?id=358
g.setSelection(4);
assertEquals("4: Y1: 3 Y2: 2 Y3: 3", Util.getLegend());
};
+
+// Regression test for http://code.google.com/p/dygraphs/issues/detail?id=438
+stackedTestCase.prototype.testMissingValueAtZero = function() {
+ var opts = {
+ stackedGraph: true
+ };
+ var data = "X,Y1,Y2\n" +
+ "0,,1\n" +
+ "1,1,2\n" +
+ "2,,3\n"
+ ;
+
+ var graph = document.getElementById("graph");
+ g = new Dygraph(graph, data, opts);
+
+ g.setSelection(0);
+ assertEquals("0: Y2: 1", Util.getLegend());
+
+ g.setSelection(1);
+ assertEquals("1: Y1: 1 Y2: 2", Util.getLegend());
+
+ g.setSelection(2);
+ assertEquals("2: Y2: 3", Util.getLegend());
+};
+
+stackedTestCase.prototype.testInterpolation = function() {
+ var opts = {
+ colors: ['#ff0000', '#00ff00', '#0000ff'],
+ stackedGraph: true
+ };
+
+ // The last series is all-NaN, it ought to be treated as all zero
+ // for stacking purposes.
+ var N = NaN;
+ var data = [
+ [100, 1, 2, N, N],
+ [101, 1, 2, 2, N],
+ [102, 1, N, N, N],
+ [103, 1, 2, 4, N],
+ [104, N, N, N, N],
+ [105, 1, 2, N, N],
+ [106, 1, 2, 7, N],
+ [107, 1, 2, 8, N],
+ [108, 1, 2, 9, N],
+ [109, 1, N, N, N]];
+
+ var graph = document.getElementById("graph");
+ g = new Dygraph(graph, data, opts);
+
+ var htx = g.hidden_ctx_;
+ var attrs = {};
+
+ // Check that lines are drawn at the expected positions, using
+ // interpolated values for missing data.
+ CanvasAssertions.assertLineDrawn(
+ htx, g.toDomCoords(100, 4), g.toDomCoords(101, 4), {strokeStyle: '#00ff00'});
+ CanvasAssertions.assertLineDrawn(
+ htx, g.toDomCoords(102, 6), g.toDomCoords(103, 7), {strokeStyle: '#ff0000'});
+ CanvasAssertions.assertLineDrawn(
+ htx, g.toDomCoords(107, 8), g.toDomCoords(108, 9), {strokeStyle: '#0000ff'});
+ CanvasAssertions.assertLineDrawn(
+ htx, g.toDomCoords(108, 12), g.toDomCoords(109, 12), {strokeStyle: '#ff0000'});
+
+ // Check that the expected number of line segments gets drawn
+ // for each series. Gaps don't get a line.
+ assertEquals(7, CanvasAssertions.numLinesDrawn(htx, '#ff0000'));
+ assertEquals(4, CanvasAssertions.numLinesDrawn(htx, '#00ff00'));
+ assertEquals(2, CanvasAssertions.numLinesDrawn(htx, '#0000ff'));
+
+ // Check that the selection returns the original (non-stacked)
+ // values and skips gaps.
+ g.setSelection(1);
+ assertEquals("101: Y1: 1 Y2: 2 Y3: 2", Util.getLegend());
+
+ g.setSelection(8);
+ assertEquals("108: Y1: 1 Y2: 2 Y3: 9", Util.getLegend());
+
+ g.setSelection(9);
+ assertEquals("109: Y1: 1", Util.getLegend());
+};
+
+stackedTestCase.prototype.testInterpolationOptions = function() {
+ var opts = {
+ colors: ['#ff0000', '#00ff00', '#0000ff'],
+ stackedGraph: true
+ };
+
+ var data = [
+ [100, 1, NaN, 3],
+ [101, 1, 2, 3],
+ [102, 1, NaN, 3],
+ [103, 1, 2, 3],
+ [104, 1, NaN, 3]];
+
+ var choices = ['all', 'inside', 'none'];
+ var stackedY = [
+ [6, 6, 6, 6, 6],
+ [4, 6, 6, 6, 4],
+ [4, 6, 4, 6, 4]];
+
+ for (var i = 0; i < choices.length; ++i) {
+ var graph = document.getElementById("graph");
+ opts['stackedGraphNaNFill'] = choices[i];
+ g = new Dygraph(graph, data, opts);
+
+ var htx = g.hidden_ctx_;
+ var attrs = {};
+
+ // Check top lines get drawn at the expected positions.
+ for (var j = 0; j < stackedY[i].length - 1; ++j) {
+ CanvasAssertions.assertLineDrawn(
+ htx,
+ g.toDomCoords(100 + j, stackedY[i][j]),
+ g.toDomCoords(101 + j, stackedY[i][j + 1]),
+ {strokeStyle: '#ff0000'});
+ }
+ }
+};
+
+stackedTestCase.prototype.testMultiAxisInterpolation = function() {
+ // Setting 2 axes to test that each axis stacks separately
+ var opts = {
+ colors: ['#ff0000', '#00ff00', '#0000ff'],
+ stackedGraph: true,
+ series: {
+ "Y1": {
+ axis: 'y',
+ },
+ "Y2": {
+ axis: 'y',
+ },
+ "Y3": {
+ axis: 'y2',
+ },
+ "Y4": {
+ axis: 'y2',
+ }
+ }
+ };
+
+ // The last series is all-NaN, it ought to be treated as all zero
+ // for stacking purposes.
+ var N = NaN;
+ var data = [
+ [100, 1, 2, N, N],
+ [101, 1, 2, 2, N],
+ [102, 1, N, N, N],
+ [103, 1, 2, 4, N],
+ [104, N, N, N, N],
+ [105, 1, 2, N, N],
+ [106, 1, 2, 7, N],
+ [107, 1, 2, 8, N],
+ [108, 1, 2, 9, N],
+ [109, 1, N, N, N]];
+
+ var graph = document.getElementById("graph");
+ g = new Dygraph(graph, data, opts);
+
+ var htx = g.hidden_ctx_;
+ var attrs = {};
+
+ // Check that lines are drawn at the expected positions, using
+ // interpolated values for missing data.
+ CanvasAssertions.assertLineDrawn(
+ htx, g.toDomCoords(100, 2), g.toDomCoords(101, 2), {strokeStyle: '#00ff00'});
+ CanvasAssertions.assertLineDrawn(
+ htx, g.toDomCoords(102, 3), g.toDomCoords(103, 3), {strokeStyle: '#ff0000'});
+ CanvasAssertions.assertLineDrawn(
+ htx, g.toDomCoords(107, 2.71), g.toDomCoords(108, 3), {strokeStyle: '#0000ff'});
+ CanvasAssertions.assertLineDrawn(
+ htx, g.toDomCoords(108, 3), g.toDomCoords(109, 3), {strokeStyle: '#ff0000'});
+
+ // Check that the expected number of line segments gets drawn
+ // for each series. Gaps don't get a line.
+ assertEquals(7, CanvasAssertions.numLinesDrawn(htx, '#ff0000'));
+ assertEquals(4, CanvasAssertions.numLinesDrawn(htx, '#00ff00'));
+ assertEquals(2, CanvasAssertions.numLinesDrawn(htx, '#0000ff'));
+
+ // Check that the selection returns the original (non-stacked)
+ // values and skips gaps.
+ g.setSelection(1);
+ assertEquals("101: Y1: 1 Y2: 2 Y3: 2", Util.getLegend());
+
+ g.setSelection(8);
+ assertEquals("108: Y1: 1 Y2: 2 Y3: 9", Util.getLegend());
+
+ g.setSelection(9);
+ assertEquals("109: Y1: 1", Util.getLegend());
+};
projects / dygraphs.git / blobdiff