add icon render test

test/fixtures/fixture_log.cpp

@@ -24,6 +24,7 @@ std::vector<FixtureLogBackend::LogMessage> FixtureLogBackend::unchecked() const
     for (const LogMessage &msg : messages) {
         if (!msg.checked) {
             unchecked.push_back(msg);
+            msg.checked = true;
         }
     }
     return unchecked;
@@ -37,10 +38,10 @@ std::vector<FixtureLogBackend::LogMessage> FixtureLogBackend::unchecked() const
 }
 
 ::std::ostream& operator<<(::std::ostream& os, const FixtureLogBackend::LogMessage& message) {
-    os << "[\"" << message.severity.get() << "\", \"" << message.event.get();
-    if (message.code) os << "\", " << message.code.get();
-    if (message.msg) os << ", \"" << message.msg.get();
-    return os << "\"]" << std::endl;
+    os << "[\"" << message.severity.get() << "\", \"" << message.event.get() << "\"";
+    if (message.code) os << ", " << message.code.get();
+    if (message.msg) os << ", \"" << message.msg.get() << "\"";
+    return os << "]" << std::endl;
 }
 
 }

test/fixtures/styles/icons.info.json

@@ -0,0 +1,18 @@
+{
+    "default": {
+        "zoom": 14,
+        "center": [52.499167, 13.418056],
+        "height": 256,
+        "log": [
+            [1, "INFO", "HttpRequest", 200, "sprites/outdoors.json"],
+            [1, "INFO", "HttpRequest", 200, "sprites/outdoors.png"],
+            [1, "INFO", "HttpRequest", 200, "tiles/14-8803-5375.vector.pbf"],
+            [1, "INFO", "HttpRequest", 200, "tiles/14-8802-5375.vector.pbf"],
+            [1, "INFO", "HttpRequest", 200, "tiles/14-8803-5374.vector.pbf"],
+            [1, "INFO", "HttpRequest", 200, "tiles/14-8802-5374.vector.pbf"],
+            [6, "INFO", "HttpRequest"],
+
+            [1, "INFO", "Sprite", "loaded sprites/outdoors"]
+        ]
+    }
+}

test/fixtures/styles/icons.style.json

@@ -0,0 +1,33 @@
+{
+  "version": 3,
+  "sources": {
+    "mapbox": {
+      "type": "vector",
+      "url": "tiles/{z}-{x}-{y}.vector.pbf",
+      "tileSize": 512,
+      "maxZoom": 14
+    }
+  },
+  "sprite": "sprites/outdoors",
+  "layers": [
+    {
+      "id": "background",
+      "type": "background",
+      "style": {
+        "background-color": "green"
+      }
+    },
+    {
+      "id": "poi",
+      "source": "mapbox",
+      "source-layer": "poi_label",
+      "type": "icon",
+      "filter": { "maki": "restaurant" },
+      "render": {
+        "icon-image": "{maki}-12",
+        "icon-size": 12,
+        "icon-allow-overlap": true
+      }
+    }
+  ]
+}