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#include <iostream>
#include <mbgl/test/util.hpp>
#include <mbgl/style/property_evaluator.hpp>
#include <mbgl/style/property_evaluation_parameters.hpp>
using namespace mbgl;
using namespace mbgl::style;
float evaluate(PropertyValue<float> value, float zoom) {
return value.evaluate(PropertyEvaluator<float>(PropertyEvaluationParameters(zoom), 0));
}
std::string evaluate(PropertyValue<std::string> value, float zoom) {
return value.evaluate(PropertyEvaluator<std::string>(PropertyEvaluationParameters(zoom), ""));
}
TEST(Function, Constant) {
EXPECT_EQ(2.0f, evaluate(2, 0));
EXPECT_EQ(3.8f, evaluate(3.8, 0));
EXPECT_EQ(22.0f, evaluate(22, 0));
EXPECT_EQ(2.0f, evaluate(2, 4));
EXPECT_EQ(3.8f, evaluate(3.8, 4));
EXPECT_EQ(22.0f, evaluate(22, 4));
EXPECT_EQ(2.0f, evaluate(2, 22));
EXPECT_EQ(3.8f, evaluate(3.8, 22));
EXPECT_EQ(22.0f, evaluate(22, 22));
}
TEST(Function, Stops) {
// Explicit constant slope in fringe regions.
Function<float> slope_1({ { 0, 1.5 }, { 6, 1.5 }, { 8, 3 }, { 22, 3 } }, 1.75);
EXPECT_EQ(1.5, evaluate(slope_1, 0));
EXPECT_EQ(1.5, evaluate(slope_1, 4));
EXPECT_EQ(1.5, evaluate(slope_1, 6));
ASSERT_FLOAT_EQ(2.0454545454545454, evaluate(slope_1, 7));
EXPECT_EQ(3.0, evaluate(slope_1, 8));
EXPECT_EQ(3.0, evaluate(slope_1, 9));
EXPECT_EQ(3.0, evaluate(slope_1, 15));
EXPECT_EQ(3.0, evaluate(slope_1, 22));
// Test constant values in fringe regions.
Function<float> slope_2({ { 6, 1.5 }, { 8, 3 } }, 1.75);
EXPECT_EQ(1.5, evaluate(slope_2, 0));
EXPECT_EQ(1.5, evaluate(slope_2, 4));
EXPECT_EQ(1.5, evaluate(slope_2, 6));
ASSERT_FLOAT_EQ(2.0454545454545454, evaluate(slope_2, 7));
EXPECT_EQ(3.0, evaluate(slope_2, 8));
EXPECT_EQ(3.0, evaluate(slope_2, 9));
EXPECT_EQ(3.0, evaluate(slope_2, 15));
EXPECT_EQ(3.0, evaluate(slope_2, 22));
// Explicit constant slope in fringe regions.
Function<float> slope_4({ { 0, 2 }, { 8, 10 } }, 1);
EXPECT_EQ(2, evaluate(slope_4, 0));
EXPECT_EQ(3, evaluate(slope_4, 1));
EXPECT_EQ(4, evaluate(slope_4, 2));
EXPECT_EQ(4.75, evaluate(slope_4, 2.75));
EXPECT_EQ(10, evaluate(slope_4, 8));
// discrete values
Function<std::string> discrete_0({{ 3, "string0"}, {6, "string1"}, {9, "string2"}}, 1);
EXPECT_EQ("string0", evaluate(discrete_0, 2));
EXPECT_EQ("string0", evaluate(discrete_0, 4));
EXPECT_EQ("string1", evaluate(discrete_0, 7));
EXPECT_EQ("string2", evaluate(discrete_0, 9));
EXPECT_EQ("string2", evaluate(discrete_0, 10));
}
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