add test

Author: archmoj

test/image/baselines/zz-treemap_multi-line_headers.png

@@ -0,0 +1,41 @@
+{
+    "data": [
+        {
+            "labels": [
+                "parent2",
+                "parent1<br>Long text on second line",
+                "item2",
+                "item1"
+            ],
+            "name": "",
+            "parents": [
+                "",
+                "",
+                "parent2",
+                "parent1<br>Long text on second line"
+            ],
+            "values": [
+                0,
+                0,
+                200,
+                500
+            ],
+            "type": "treemap",
+            "textposition": "middle center",
+            "texttemplate": "<b>%{label}</b>",
+            "textfont": {
+                "size": 20
+            }
+        }
+    ],
+    "layout": {
+        "margin": {
+            "t": 50,
+            "b": 10,
+            "l": 10,
+            "r": 10
+        },
+        "height": 200,
+        "width": 500
+    }
+}