[core] Tiles that error on load are not renderable

test/tile/vector_tile.test.cpp

@@ -0,0 +1,47 @@
+#include <mbgl/test/util.hpp>
+#include <mbgl/test/fake_file_source.hpp>
+#include <mbgl/tile/vector_tile.hpp>
+#include <mbgl/tile/tile_loader_impl.hpp>
+
+#include <mbgl/actor/thread_pool.hpp>
+#include <mbgl/map/transform.hpp>
+#include <mbgl/style/style.hpp>
+#include <mbgl/style/update_parameters.hpp>
+#include <mbgl/annotation/annotation_manager.hpp>
+
+using namespace mbgl;
+
+class VectorTileTest {
+public:
+    FakeFileSource fileSource;
+    TransformState transformState;
+    ThreadPool threadPool { 1 };
+    AnnotationManager annotationManager { 1.0 };
+    style::Style style { fileSource, 1.0 };
+    Tileset tileset { { "https://example.com" }, { 0, 22 }, "none" };
+
+    style::UpdateParameters updateParameters {
+        1.0,
+        MapDebugOptions(),
+        transformState,
+        threadPool,
+        fileSource,
+        MapMode::Continuous,
+        annotationManager,
+        style
+    };
+};
+
+TEST(VectorTile, setError) {
+    VectorTileTest test;
+    VectorTile tile(OverscaledTileID(0, 0, 0), "source", test.updateParameters, test.tileset);
+    tile.setError(std::make_exception_ptr(std::runtime_error("test")));
+    EXPECT_FALSE(tile.isRenderable());
+}
+
+TEST(VectorTile, onError) {
+    VectorTileTest test;
+    VectorTile tile(OverscaledTileID(0, 0, 0), "source", test.updateParameters, test.tileset);
+    tile.onError(std::make_exception_ptr(std::runtime_error("test")));
+    EXPECT_TRUE(tile.isRenderable());
+}