[core] Add unit test for global settings object

next/test/CMakeLists.txt

@@ -22,6 +22,7 @@ add_library(
     ${MBGL_ROOT}/test/math/clamp.test.cpp
     ${MBGL_ROOT}/test/math/minmax.test.cpp
     ${MBGL_ROOT}/test/math/wrap.test.cpp
+    ${MBGL_ROOT}/test/platform/settings.test.cpp
     ${MBGL_ROOT}/test/programs/symbol_program.test.cpp
     ${MBGL_ROOT}/test/renderer/backend_scope.test.cpp
     ${MBGL_ROOT}/test/renderer/image_manager.test.cpp

test/platform/settings.test.cpp

@@ -0,0 +1,48 @@
+#include <gtest/gtest.h>
+#include <mbgl/platform/settings.hpp>
+
+using namespace mbgl;
+using namespace mbgl::platform;
+
+TEST(Settings, SetAndGet) {
+    using Value = mapbox::base::Value;
+    using Object = mapbox::base::ValueObject;
+
+    auto& settings = Settings::getInstance();
+    auto value = settings.get(EXPERIMENTAL_THREAD_PRIORITY_WORKER);
+    EXPECT_TRUE(value.is<mapbox::base::NullValue>());
+
+    Value lowPrioValue{19.0};
+    settings.set(EXPERIMENTAL_THREAD_PRIORITY_WORKER, lowPrioValue);
+    auto threadPriority = settings.get(EXPERIMENTAL_THREAD_PRIORITY_WORKER);
+    EXPECT_EQ(lowPrioValue, threadPriority);
+    EXPECT_EQ(lowPrioValue, settings.get("mapbox_thread_priority_worker"));
+
+    Value networkPrioValue{-20.0};
+    Value databasePrioValue{-10.0};
+    Object multipleValues{{EXPERIMENTAL_THREAD_PRIORITY_DATABASE, databasePrioValue},
+                          {EXPERIMENTAL_THREAD_PRIORITY_NETWORK, networkPrioValue}};
+    settings.set(std::move(multipleValues));
+
+    std::vector<std::string> keys{EXPERIMENTAL_THREAD_PRIORITY_WORKER,
+                                  EXPERIMENTAL_THREAD_PRIORITY_DATABASE,
+                                  EXPERIMENTAL_THREAD_PRIORITY_NETWORK,
+                                  EXPERIMENTAL_THREAD_PRIORITY_FILE};
+
+    auto object = settings.get(keys);
+
+    Object values{{EXPERIMENTAL_THREAD_PRIORITY_WORKER, lowPrioValue},
+                  {EXPERIMENTAL_THREAD_PRIORITY_DATABASE, databasePrioValue},
+                  {EXPERIMENTAL_THREAD_PRIORITY_NETWORK, networkPrioValue},
+                  {EXPERIMENTAL_THREAD_PRIORITY_FILE, Value{}}};
+
+    EXPECT_EQ(values, object);
+
+    values = Object{{EXPERIMENTAL_THREAD_PRIORITY_WORKER, Value{}},
+                    {EXPERIMENTAL_THREAD_PRIORITY_DATABASE, Value{}},
+                    {EXPERIMENTAL_THREAD_PRIORITY_NETWORK, Value{}},
+                    {EXPERIMENTAL_THREAD_PRIORITY_FILE, Value{}}};
+
+    settings.set(values);
+    EXPECT_EQ(values, settings.get(keys));
+}

test/test-files.json

@@ -23,6 +23,7 @@
         "test/math/clamp.test.cpp",
         "test/math/minmax.test.cpp",
         "test/math/wrap.test.cpp",
+        "test/platform/settings.test.cpp",
         "test/programs/symbol_program.test.cpp",
         "test/renderer/backend_scope.test.cpp",
         "test/renderer/image_manager.test.cpp",