[tests] Refactor and make MockFileSource more general

Now it works more like StubStyleObserver: you can assign std::functions to specific slots based on resource type.

Rewrite resource loading tests in that style, making them less like integration tests of Style and more like unit tests of Source, GlyphStore, and SpriteStore.

1 files changed, 45 insertions, 0 deletions

diff --git a/test/style/style.cpp b/test/style/style.cpp
new file mode 100644
index 0000000000..59366ea7dd
--- /dev/null
+++ b/test/style/style.cpp
@@ -0,0 +1,45 @@
+#include "../fixtures/util.hpp"
+
+#include <mbgl/map/map_data.hpp>
+#include <mbgl/style/style.hpp>
+#include <mbgl/util/io.hpp>
+
+using namespace mbgl;
+
+TEST(Style, UnusedSource) {
+    util::ThreadContext context { "Map", util::ThreadType::Map, util::ThreadPriority::Regular };
+    util::ThreadContext::Set(&context);
+
+    MapData data { MapMode::Still, GLContextMode::Unique, 1.0 };
+    Style style { data };
+
+    style.setJSON(util::read_file("test/fixtures/resources/style-unused-sources.json"), "");
+    style.cascade();
+    style.recalculate(0);
+
+    Source *usedSource = style.getSource("usedsource");
+    EXPECT_TRUE(usedSource);
+    EXPECT_TRUE(usedSource->isLoaded());
+
+    Source *unusedSource = style.getSource("unusedsource");
+    EXPECT_TRUE(unusedSource);
+    EXPECT_FALSE(unusedSource->isLoaded());
+}
+
+TEST(Style, UnusedSourceActiveViaClassUpdate) {
+    util::ThreadContext context { "Map", util::ThreadType::Map, util::ThreadPriority::Regular };
+    util::ThreadContext::Set(&context);
+
+    MapData data { MapMode::Still, GLContextMode::Unique, 1.0 };
+    Style style { data };
+
+    data.addClass("visible");
+
+    style.setJSON(util::read_file("test/fixtures/resources/style-unused-sources.json"), "");
+    style.cascade();
+    style.recalculate(0);
+
+    Source *unusedSource = style.getSource("unusedsource");
+    EXPECT_TRUE(unusedSource);
+    EXPECT_TRUE(unusedSource->isLoaded());
+}