From 7927708b405955895fbddac2c78e68b11214c2a6 Mon Sep 17 00:00:00 2001
From: Yohan Boniface <yb@enix.org>
Date: Thu, 25 Aug 2016 15:29:20 +0200
Subject: [PATCH] Allow to create and open a tooltip without source (fix #4827)
 (#4836)

---
 spec/suites/layer/TooltipSpec.js | 9 +++++++++
 src/layer/Tooltip.js             | 2 +-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/spec/suites/layer/TooltipSpec.js b/spec/suites/layer/TooltipSpec.js
index cc6ddaab..f32e3fe9 100644
--- a/spec/suites/layer/TooltipSpec.js
+++ b/spec/suites/layer/TooltipSpec.js
@@ -278,5 +278,14 @@ describe('Tooltip', function () {
 		L.Browser.touch = oldTouch;
 	});
 
+
+	it("opens with map.openTooltip", function (done) {
+		map.on('tooltipopen', function (e) {
+			expect(map.hasLayer(e.tooltip)).to.be(true);
+			done();
+		});
+		map.openTooltip('Tooltip', center);
+	});
+
 });
 
diff --git a/src/layer/Tooltip.js b/src/layer/Tooltip.js
index dcbd82c6..662f28e0 100644
--- a/src/layer/Tooltip.js
+++ b/src/layer/Tooltip.js
@@ -174,7 +174,7 @@ L.Tooltip = L.DivOverlay.extend({
 
 	_getAnchor: function () {
 		// Where should we anchor the tooltip on the source layer?
-		return L.point(this._source._getTooltipAnchor && !this.options.sticky ? this._source._getTooltipAnchor() : [0, 0]);
+		return L.point(this._source && this._source._getTooltipAnchor && !this.options.sticky ? this._source._getTooltipAnchor() : [0, 0]);
 	}
 
 });