rearrange tests and add storage tests

test/storage/cache_response.cpp

@@ -0,0 +1,39 @@
+#include "../util.hpp"
+
+#include <uv.h>
+
+#include <mbgl/storage/default/default_file_source.hpp>
+#include <mbgl/storage/default/sqlite_cache.hpp>
+
+TEST(Storage, CacheResponse) {
+    SCOPED_TEST(CacheResponse);
+
+    using namespace mbgl;
+
+    SQLiteCache cache(":memory:");
+    DefaultFileSource fs(&cache, uv_default_loop());
+
+    const Resource resource { Resource::Unknown, "http://127.0.0.1:3000/cache" };
+
+    fs.request(resource, uv_default_loop(), [&](const Response &res) {
+        EXPECT_EQ(res.status, Response::Successful);
+        EXPECT_EQ(res.data, "Response 1");
+        EXPECT_GT(res.expires, 0);
+        EXPECT_EQ(res.modified, 0);
+        EXPECT_EQ(res.etag, "");
+        EXPECT_EQ(res.message, "");
+
+        fs.request(resource, uv_default_loop(), [&, res](const Response &res2) {
+            EXPECT_EQ(res2.status, res.status);
+            EXPECT_EQ(res2.data, res.data);
+            EXPECT_EQ(res2.expires, res.expires);
+            EXPECT_EQ(res2.modified, res.modified);
+            EXPECT_EQ(res2.etag, res.etag);
+            EXPECT_EQ(res2.message, res.message);
+
+            CacheResponse.finish();
+        });
+    });
+
+    uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+}