[core] use stale and refreshing TileJSON/GeoJSON data

We're now supporting using stale TileJSON and GeoJSON data. When we receive a new answer with an updated TileJSON file, we're replacing the Source's metadata with the new one and trigger updates to make sure we're loading the correct tiles. Similarly, GeoJSON data will be reparsed.

2 files changed, 25 insertions, 0 deletions

diff --git a/test/fixtures/stale/stale_style_and_tilejson/expected.png b/test/fixtures/stale/stale_style_and_tilejson/expected.png
new file mode 100644
index 0000000000..d3c6ef3cd5
--- /dev/null
+++ b/test/fixtures/stale/stale_style_and_tilejson/expected.png
diff --git a/test/fixtures/stale/style_and_tilejson.json b/test/fixtures/stale/style_and_tilejson.json
new file mode 100644
index 0000000000..f2a4fddd0b
--- /dev/null
+++ b/test/fixtures/stale/style_and_tilejson.json
@@ -0,0 +1,25 @@
+{
+  "version": 8,
+  "name": "Water",
+  "sources": {
+    "mapbox": {
+      "type": "vector",
+      "url": "http://127.0.0.1:3000/stale/streets.json"
+    }
+  },
+  "layers": [{
+    "id": "background",
+    "type": "background",
+    "paint": {
+      "background-color": "red"
+    }
+  }, {
+    "id": "water",
+    "type": "fill",
+    "source": "mapbox",
+    "source-layer": "water",
+    "paint": {
+      "fill-color": "blue"
+    }
+  }]
+}