Add message to assertions.

2015-03-30 22:50:15 +02:00
parent 2c40d74a15
commit fb9ba22c30
45 changed files with 394 additions and 221 deletions
--- a/src/ol/source/tileimagesource.js
+++ b/src/ol/source/tileimagesource.js
@@ -90,7 +90,7 @@ ol.source.TileImage.prototype.getTile =
  if (this.tileCache.containsKey(tileCoordKey)) {
    return /** @type {!ol.Tile} */ (this.tileCache.get(tileCoordKey));
  } else {
-    goog.asserts.assert(projection);
+    goog.asserts.assert(projection, 'argument projection is truthy');
    var tileCoord = [z, x, y];
    var urlTileCoord = this.getWrapXTileCoord(tileCoord, projection);
    var tileUrl = goog.isNull(urlTileCoord) ? undefined :