[core] query source features

test/api/query.test.cpp

@@ -8,6 +8,7 @@
 #include <mbgl/util/image.hpp>
 #include <mbgl/util/io.hpp>
 #include <mbgl/util/run_loop.hpp>
+#include <mbgl/style/source.hpp>
 
 using namespace mbgl;
 using namespace mbgl::style;
@@ -81,3 +82,43 @@ TEST(Query, QueryRenderedFeaturesFilter) {
     auto features3 = test.map.queryRenderedFeatures(zz, {{ }, { gtFilter }});
     EXPECT_EQ(features3.size(), 1u);
 }
+
+TEST(Query, QuerySourceFeatures) {
+    QueryTest test;
+
+    auto features1 = test.map.getSource("source3")->querySourceFeatures();
+    EXPECT_EQ(features1.size(), 1u);
+}
+
+TEST(Query, QuerySourceFeaturesOptionValidation) {
+    QueryTest test;
+
+    // GeoJSONSource, doesn't require a layer id
+    auto features = test.map.getSource("source3")->querySourceFeatures();
+    ASSERT_EQ(features.size(), 1u);
+
+    // VectorSource, requires a layer id
+    features = test.map.getSource("source5")->querySourceFeatures();
+    ASSERT_EQ(features.size(), 0u);
+    
+    // RasterSource, not supported
+    features = test.map.getSource("source6")->querySourceFeatures();
+    ASSERT_EQ(features.size(), 0u);
+}
+
+TEST(Query, QuerySourceFeaturesFilter) {
+    QueryTest test;
+
+    const EqualsFilter eqFilter = { "key1", std::string("value1") };
+    auto features1 = test.map.getSource("source4")->querySourceFeatures({{}, { eqFilter }});
+    EXPECT_EQ(features1.size(), 1u);
+
+    const IdentifierNotEqualsFilter idNotEqFilter = { std::string("feature1") };
+    auto features2 = test.map.getSource("source4")->querySourceFeatures({{}, { idNotEqFilter }});
+    EXPECT_EQ(features2.size(), 0u);
+
+    const GreaterThanFilter gtFilter = { "key2", 1.0 };
+    auto features3 = test.map.getSource("source4")->querySourceFeatures({{}, { gtFilter }});
+    EXPECT_EQ(features3.size(), 1u);
+}
+