76 lines
2.7 KiB
C++
76 lines
2.7 KiB
C++
#include <iostream>
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#include <mbgl/test/util.hpp>
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#include <mbgl/style/property_evaluator.hpp>
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#include <mbgl/style/calculation_parameters.hpp>
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using namespace mbgl;
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using namespace mbgl::style;
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float evaluate(PropertyValue<float> value, float zoom) {
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return PropertyValue<float>::visit(value, PropertyEvaluator<float>(CalculationParameters(zoom), 0));
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}
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std::string evaluate(PropertyValue<std::string> value, float zoom) {
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return PropertyValue<std::string>::visit(value, PropertyEvaluator<std::string>(CalculationParameters(zoom), ""));
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}
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TEST(Function, Constant) {
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EXPECT_EQ(2.0f, evaluate(2, 0));
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EXPECT_EQ(3.8f, evaluate(3.8, 0));
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EXPECT_EQ(22.0f, evaluate(22, 0));
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EXPECT_EQ(2.0f, evaluate(2, 4));
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EXPECT_EQ(3.8f, evaluate(3.8, 4));
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EXPECT_EQ(22.0f, evaluate(22, 4));
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EXPECT_EQ(2.0f, evaluate(2, 22));
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EXPECT_EQ(3.8f, evaluate(3.8, 22));
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EXPECT_EQ(22.0f, evaluate(22, 22));
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}
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TEST(Function, Stops) {
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// Explicit constant slope in fringe regions.
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Function<float> slope_1({ { 0, 1.5 }, { 6, 1.5 }, { 8, 3 }, { 22, 3 } }, 1.75);
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EXPECT_EQ(1.5, evaluate(slope_1, 0));
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EXPECT_EQ(1.5, evaluate(slope_1, 4));
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EXPECT_EQ(1.5, evaluate(slope_1, 6));
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ASSERT_FLOAT_EQ(2.0454545454545454, evaluate(slope_1, 7));
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EXPECT_EQ(3.0, evaluate(slope_1, 8));
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EXPECT_EQ(3.0, evaluate(slope_1, 9));
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EXPECT_EQ(3.0, evaluate(slope_1, 15));
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EXPECT_EQ(3.0, evaluate(slope_1, 22));
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// Test constant values in fringe regions.
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Function<float> slope_2({ { 6, 1.5 }, { 8, 3 } }, 1.75);
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EXPECT_EQ(1.5, evaluate(slope_2, 0));
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EXPECT_EQ(1.5, evaluate(slope_2, 4));
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EXPECT_EQ(1.5, evaluate(slope_2, 6));
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ASSERT_FLOAT_EQ(2.0454545454545454, evaluate(slope_2, 7));
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EXPECT_EQ(3.0, evaluate(slope_2, 8));
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EXPECT_EQ(3.0, evaluate(slope_2, 9));
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EXPECT_EQ(3.0, evaluate(slope_2, 15));
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EXPECT_EQ(3.0, evaluate(slope_2, 22));
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// Test no values.
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Function<float> slope_3({}, 1.75);
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EXPECT_EQ(1, evaluate(slope_3, 2));
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EXPECT_EQ(1, evaluate(slope_3, 6));
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EXPECT_EQ(1, evaluate(slope_3, 12));
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// Explicit constant slope in fringe regions.
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Function<float> slope_4({ { 0, 2 }, { 8, 10 } }, 1);
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EXPECT_EQ(2, evaluate(slope_4, 0));
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EXPECT_EQ(3, evaluate(slope_4, 1));
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EXPECT_EQ(4, evaluate(slope_4, 2));
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EXPECT_EQ(4.75, evaluate(slope_4, 2.75));
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EXPECT_EQ(10, evaluate(slope_4, 8));
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// discrete values
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Function<std::string> discrete_0({{ 3, "string0"}, {6, "string1"}, {9, "string2"}}, 1);
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EXPECT_EQ("string0", evaluate(discrete_0, 2));
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EXPECT_EQ("string0", evaluate(discrete_0, 4));
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EXPECT_EQ("string1", evaluate(discrete_0, 7));
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EXPECT_EQ("string2", evaluate(discrete_0, 9));
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EXPECT_EQ("string2", evaluate(discrete_0, 10));
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}
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