[core][tests] Add StyleConversion.GetLayerGenericPropertyDefaultValues unit test

1 files changed, 31 insertions, 2 deletions

diff --git a/test/style/conversion/layer.test.cpp b/test/style/conversion/layer.test.cpp
index 9d04c48d28..4016307373 100644
--- a/test/style/conversion/layer.test.cpp
+++ b/test/style/conversion/layer.test.cpp
@@ -1,11 +1,11 @@
 #include <mbgl/test/util.hpp>
 
+#include <rapidjson/prettywriter.h>
 #include <mbgl/style/conversion/filter.hpp>
 #include <mbgl/style/conversion/json.hpp>
 #include <mbgl/style/conversion/layer.hpp>
 #include <mbgl/style/layers/background_layer_impl.hpp>
-
-#include <rapidjson/prettywriter.h>
+#include <mbgl/style/layers/symbol_layer_properties.hpp>
 
 using namespace mbgl;
 using namespace mbgl::style;
@@ -164,4 +164,33 @@ TEST(StyleConversion, SetLayerGenericProperties) {
     const JSValue newMaxZoom(22.0f);
     layer->setProperty("maxzoom", Convertible(&newMaxZoom));
     EXPECT_EQ(22.0f, layer->getMaxZoom());
+}
+
+TEST(StyleConversion, GetLayerGenericPropertyDefaultValues) {
+    auto layer = parseLayer(R"JSON({
+        "type": "symbol",
+        "id": "symbol",
+        "source": "composite"
+    })JSON");
+
+    ASSERT_NE(nullptr, layer);
+    StyleProperty maxzoom = layer->getPropertyDefaultValue("maxzoom");
+    EXPECT_EQ(StyleProperty::Kind::Constant, maxzoom.getKind());
+    EXPECT_EQ(Value(std::numeric_limits<double>::infinity()), maxzoom.getValue());
+
+    StyleProperty minzoom = layer->getPropertyDefaultValue("minzoom");
+    EXPECT_EQ(StyleProperty::Kind::Constant, minzoom.getKind());
+    EXPECT_EQ(Value(-std::numeric_limits<double>::infinity()), minzoom.getValue());
+
+    StyleProperty visibility = layer->getPropertyDefaultValue("visibility");
+    EXPECT_EQ(StyleProperty::Kind::Constant, visibility.getKind());
+    EXPECT_EQ(Value("visible"), visibility.getValue());
+
+    StyleProperty symbolSpacing = layer->getPropertyDefaultValue("symbol-spacing");
+    EXPECT_EQ(StyleProperty::Kind::Constant, symbolSpacing.getKind());
+    EXPECT_EQ(Value(SymbolSpacing::defaultValue()), symbolSpacing.getValue());
+
+    StyleProperty nonexistent = layer->getPropertyDefaultValue("nonexistent");
+    EXPECT_EQ(StyleProperty::Kind::Undefined, nonexistent.getKind());
+    EXPECT_EQ(Value(), nonexistent.getValue());
 }
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