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#include <mbgl/test/util.hpp>
#include <mbgl/style/conversion/json.hpp>
#include <mbgl/style/conversion/constant.hpp>
#include <mbgl/style/conversion/function.hpp>
#include <mbgl/style/conversion/data_driven_property_value.hpp>
#include <mbgl/util/rapidjson.hpp>
using namespace mbgl;
using namespace mbgl::style;
using namespace mbgl::style::conversion;
TEST(StyleConversion, Function) {
Error error;
auto parseFunction = [&](const std::string& json) {
return convertJSON<CameraFunction<float>>(json, error);
};
auto fn1 = parseFunction(R"({"stops":[]})");
ASSERT_FALSE(fn1);
ASSERT_EQ("function must have at least one stop", error.message);
auto fn2 = parseFunction(R"({"stops":[1]})");
ASSERT_FALSE(fn2);
ASSERT_EQ("function stop must be an array", error.message);
auto fn3 = parseFunction(R"({"stops":[[]]})");
ASSERT_FALSE(fn3);
ASSERT_EQ("function stop must have two elements", error.message);
auto fn4 = parseFunction(R"({"stops":[[-1,-1]]})");
ASSERT_TRUE(bool(fn4));
auto fn5 = parseFunction(R"({"stops":[[0,1,2]]})");
ASSERT_FALSE(fn5);
ASSERT_EQ("function stop must have two elements", error.message);
auto fn6 = parseFunction(R"({"stops":[[0,"x"]]})");
ASSERT_FALSE(fn6);
ASSERT_EQ("value must be a number", error.message);
auto fn7 = parseFunction("{}");
ASSERT_FALSE(fn7);
ASSERT_EQ("function value must specify stops", error.message);
auto fn8 = parseFunction("[]");
ASSERT_FALSE(fn8);
ASSERT_EQ("function must be an object", error.message);
auto fn9 = parseFunction(R"({"stops":[[0,0]],"base":false})");
ASSERT_FALSE(fn9);
ASSERT_EQ("function base must be a number", error.message);
}
TEST(StyleConversion, CompositeFunctionExpression) {
Error error;
auto parseFunction = [&](const std::string& src) {
JSDocument doc;
doc.Parse<0>(src);
return convert<DataDrivenPropertyValue<float>>(doc, error);
};
auto fn1 = parseFunction(R"(["interpolate", ["linear"], ["zoom"], 0, ["number", ["get", "x"]], 10, 10])");
ASSERT_TRUE(fn1);
auto fn2 = parseFunction(R"(["coalesce", ["interpolate", ["linear"], ["zoom"], 0, ["number", ["get", "x"]], 10, 10], 0])");
ASSERT_TRUE(fn2);
auto fn3 = parseFunction(R"(["let", "a", 0, ["interpolate", ["linear"], ["zoom"], 0, ["number", ["get", "x"]], 10, 10] ])");
ASSERT_TRUE(fn3);
auto fn4 = parseFunction(R"(["coalesce", ["let", "a", 0, ["interpolate", ["linear"], ["zoom"], 0, ["number", ["get", "x"]], 10, 10], 0 ])");
ASSERT_TRUE(fn4);
auto fn5 = parseFunction(R"(["coalesce", ["interpolate", ["linear"], ["number", ["get", "x"]], 0, ["zoom"], 10, 10], 0])");
ASSERT_FALSE(fn5);
ASSERT_EQ(R"("zoom" expression may only be used as input to a top-level "step" or "interpolate" expression.)", error.message);
}
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