X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=auto_tests%2Ftests%2Fto_dom_coords.js;h=fd766f7dae4b619e7c050b845eb5a2a20954a0ed;hb=3b3b39e7140cf45dfdc95f636978c5353e3a6c38;hp=3def1effe89588a9e10db0240d5793e962ec3aab;hpb=780a5081d29a3c0a3c4f1d126f0992cf4fc14ebd;p=dygraphs.git

diff --git a/auto_tests/tests/to_dom_coords.js b/auto_tests/tests/to_dom_coords.js
index 3def1ef..fd766f7 100644
--- a/auto_tests/tests/to_dom_coords.js
+++ b/auto_tests/tests/to_dom_coords.js
@@ -6,16 +6,16 @@
 
 var ToDomCoordsTestCase = TestCase("to-dom-coords");
 
-var _origFunc = Dygraph.getContext;
+ToDomCoordsTestCase._origFunc = Dygraph.getContext;
 ToDomCoordsTestCase.prototype.setUp = function() {
   document.body.innerHTML = "<div id='graph'></div>";
   Dygraph.getContext = function(canvas) {
-    return new Proxy(_origFunc(canvas));
+    return new Proxy(ToDomCoordsTestCase._origFunc(canvas));
   }
 };
 
 ToDomCoordsTestCase.prototype.tearDown = function() {
-  Dygraph.getContext = _origFunc;
+  Dygraph.getContext = ToDomCoordsTestCase._origFunc;
 };
 
 // Checks that toDomCoords and toDataCoords are inverses of one another.
@@ -165,3 +165,35 @@ ToDomCoordsTestCase.prototype.testAxisTickSize = function() {
   assertEquals([200, 0], g.toDomCoords(0, 100));
   assertEquals([500, 386], g.toDomCoords(100, 0));
 }
+
+ToDomCoordsTestCase.prototype.testChartLogarithmic = function() {
+  var opts = {
+    drawXAxis: false,
+    drawYAxis: false,
+    drawXGrid: false,
+    drawYGrid: false,
+    logscale: true,
+    rightGap: 0,
+    valueRange: [1, 4],
+    dateWindow: [0, 10],
+    width: 400,
+    height: 400,
+    colors: ['#ff0000']
+  }
+
+  var graph = document.getElementById("graph");
+  g = new Dygraph(graph, [ [1,1], [4,4] ], opts);
+
+  var epsilon = 1e-8;
+  assertEqualsDelta([0, 4], g.toDataCoords(0, 0), epsilon);
+  assertEqualsDelta([0, 1], g.toDataCoords(0, 400), epsilon);
+  assertEqualsDelta([10, 4], g.toDataCoords(400, 0), epsilon);
+  assertEqualsDelta([10, 1], g.toDataCoords(400, 400), epsilon);
+  assertEqualsDelta([10, 2], g.toDataCoords(400, 200), epsilon);
+  
+  assertEquals([0, 0], g.toDomCoords(0, 4));
+  assertEquals([0, 400], g.toDomCoords(0, 1));
+  assertEquals([400, 0], g.toDomCoords(10, 4));
+  assertEquals([400, 400], g.toDomCoords(10, 1));
+  assertEquals([400, 200], g.toDomCoords(10, 2));
+}