clear bbox cache to fix bar test

Author: alexcjohnson

src/components/drawing/index.js

@@ -610,15 +610,15 @@ drawing.makeTester = function() {
 // in a reference frame where it isn't translated and its anchor
 // point is at (0,0)
 // always returns a copy of the bbox, so the caller can modify it safely
-var savedBBoxes = {};
+drawing.savedBBoxes = {};
 var savedBBoxesCount = 0;
 var maxSavedBBoxes = 10000;
 
 drawing.bBox = function(node) {
     // cache elements we've already measured so we don't have to
     // remeasure the same thing many times
     var hash = nodeHash(node);
-    var out = savedBBoxes[hash];
+    var out = drawing.savedBBoxes[hash];
     if(out) return Lib.extendFlat({}, out);
 
     var tester = drawing.tester.node();
@@ -654,12 +654,12 @@ drawing.bBox = function(node) {
     // or a long session could overload on memory
     // by saving boxes for long-gone elements
     if(savedBBoxesCount >= maxSavedBBoxes) {
-        savedBBoxes = {};
+        drawing.savedBBoxes = {};
         maxSavedBBoxes = 0;
     }
 
     // cache this bbox
-    savedBBoxes[hash] = bb;
+    drawing.savedBBoxes[hash] = bb;
     savedBBoxesCount++;
 
     return Lib.extendFlat({}, bb);

test/jasmine/tests/bar_test.js

@@ -1045,6 +1045,17 @@ describe('A bar plot', function() {
             assertTextIsInsidePath(text20, path20); // inside
             assertTextIsBelowPath(text30, path30); // outside
 
+            // clear bounding box cache - somehow when you cache
+            // text size too early sometimes it changes later...
+            // we've had this issue before, where we've had to
+            // redraw annotations to get final sizes, I wish we
+            // could get some signal that fonts are really ready
+            // and not start drawing until then (or invalidate
+            // the bbox cache when that happens?)
+            // without this change, we get an error at
+            // assertTextIsInsidePath(text30, path30);
+            Drawing.savedBBoxes = {};
+
             return Plotly.restyle(gd, 'textposition', 'inside');
         }).then(function() {
             var cd = gd.calcdata;