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JL_ActionTree_Tests.cpp
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JL_ActionTree_Tests.cpp
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// Copyright (C) 2021 Kobe Vrijsen <kobevrijsen@posteo.be>
//
// ActionTree - Tree based decision/action stucture helper. An alternative to branches.
//
// This file is free software and distributed under the terms of the European Union
// Public Lincense as published by the European Commision; either version 1.2 of the
// License, or, at your option, any later version.
#pragma once
#include "JL_ActionTree.h"
using namespace JL::action_tree;
#include "JL_Visitor.h"
#define CATCH_CONFIG_MAIN
#include "../catch2/catch.hpp"
#pragma region test_utilities
struct Value
{
int value = int(0xEEEEEEEE); // If uninitialized
};
struct Addable : Value
{
Addable operator + (Addable const& o) { return { value + o.value }; };
};
struct NonDefault : Value
{
NonDefault() = delete;
NonDefault(int i) : Value{ i } {}
};
Action makeNothing { [](auto){} };
Action makeValue { [](int i) -> Value { return {1 * i}; } };
Action makeAddable { [](int i) -> Addable { return {2 * i}; } };
Action makeValueAlt { [](int i) -> Value { return {3 * i}; } };
Action makeAddableAlt{ [](int i) -> Addable { return {5 * i}; } };
Action makeNonDefault{ [](int i) -> NonDefault { return {7 * i}; } };
Decision alwaysTrue { [](auto) { return true; } };
Decision isNotZero { [](int i) { return i != 0; } };
Decision isEven { [](int i) { return (i & 1) == 0; } };
Decision isGreaterEqualTwo{ [](int i) { return i >= 2; } };
#pragma endregion
#define REQUIRE_TYPE(type, expr) static_assert(std::is_same_v<type, decltype(expr)>)
TEST_CASE("Test Action")
{
REQUIRE_TYPE(void , makeNothing(0));
REQUIRE_TYPE(Value , makeValue (0));
REQUIRE_TYPE(Addable, makeAddable(0));
{
// Test Action
REQUIRE(makeValue (7).value == 7 );
REQUIRE(makeAddable(7).value == 14);
REQUIRE_TYPE(void , (makeNothing | makeNothing)(0));
}
{
// Test combined action (only one value)
auto onlyA = makeValue | makeNothing;
auto onlyB = makeNothing | makeValue ;
REQUIRE_TYPE(Value , onlyA(0));
REQUIRE_TYPE(Value , onlyB(0));
REQUIRE(onlyA(7).value == 7);
REQUIRE(onlyB(7).value == 7);
}
{
// Test combined action (two values)
auto values = makeValue | makeValueAlt;
auto added = makeAddable | makeAddableAlt;
using Paired = std::pair<Value, Value>;
REQUIRE_TYPE(Paired , values(0));
REQUIRE_TYPE(Addable, added (0));
auto [v1, v2] = values(7);
auto va = added (7);
REQUIRE(v1.value == 7);
REQUIRE(v2.value == 7 * 3);
REQUIRE(va.value == (7 * 2) + (7 * 5) );
}
{
// Test visitor
using JL::Visitor;
Visitor visitor{ [](int i) { return float(i * 10); } };
Action action { [](int i) { return i * 5; } };
auto sequence = action | visitor;
REQUIRE_TYPE(float, sequence(0));
REQUIRE(sequence(1) == 50);
}
}
TEST_CASE("Test Decision")
{
REQUIRE_TYPE(bool, alwaysTrue(0));
REQUIRE(alwaysTrue(0) == true);
{
// Test combined and not
auto combinedAND = isGreaterEqualTwo && isEven;
auto combinedOR = isGreaterEqualTwo || isEven;
auto combinedNot = !isGreaterEqualTwo;
REQUIRE_TYPE(bool, combinedAND(0));
constexpr bool results_A[] { false, false, true, true , true, true };
constexpr bool results_B[] { true , false, true, false, true, false };
bool test{ true };
for (int i{}; i < std::size(results_A); ++i)
{
bool test{ true };
test &= (combinedAND(i) == (results_A[i] && results_B[i]));
test &= (combinedOR (i) == (results_A[i] || results_B[i]));
test &= (combinedNot(i) == !results_A[i]);
REQUIRE(test);
}
}
}
TEST_CASE("Test conditional Action")
{
{
// Conditions
auto conditionalNothing = isEven & makeNothing;
auto conditionalValue = isEven & makeValue;
using Maybe = impl::Maybe<Value>;
REQUIRE_TYPE(void , conditionalNothing(0));
REQUIRE_TYPE(Maybe, conditionalValue(0));
REQUIRE(conditionalValue(2).value_or(Value{-1}).value == 2);
REQUIRE(conditionalValue(1).value_or(Value{-1}).value == -1);
}
{
// Flip conditions
int state{ 0 };
Action on { [&state](auto) { state = 1; } };
Action off { [&state](auto) { state = -1; } };
Decision decision{ [&state](bool b) { state = 0; return b; } };
auto decide = decision +on -off;
decide(false); REQUIRE(state == -1);
decide(false); REQUIRE(state == 0);
decide(true ); REQUIRE(state == 1);
decide(true ); REQUIRE(state == 0);
decide(false); REQUIRE(state == -1);
decide(true ); REQUIRE(state == 1);
}
{
// Test visitor
using JL::Visitor;
Visitor visitor { [](int i) { return Value{i * 10}; } };
Visitor visitorV {
[](int i = 0) { return Value{i * 10}; }
};
Action action { [](int i) { return i * 5; } };
Decision decision{ [](int i) { return i != 0; } };
auto sequence = decision & action | visitor ;
auto sequenceV = decision & action | visitorV;
REQUIRE_TYPE(Value, sequence (0));
REQUIRE_TYPE(Value, sequenceV(0));
REQUIRE(sequence (1).value == 50);
REQUIRE(sequence (0).value == Value{}.value);
REQUIRE(sequenceV(1).value == 50);
REQUIRE(sequenceV(0).value == 0);
}
}
#include <optional>
TEST_CASE("Test Branch")
{
auto eitherValue = isNotZero && makeValue || makeValueAlt;
auto eitherType = isNotZero && makeValue || makeAddable;
auto eitherTrue = isNotZero && makeValue || makeNothing;
auto eitherFalse = isNotZero && makeNothing || makeAddable;
using Either = impl::Either<Value, Addable>;
using True = std::optional<Value>;
using False = std::optional<Addable>;
REQUIRE_TYPE(Value , eitherValue(0));
REQUIRE_TYPE(Either, eitherType (0));
REQUIRE_TYPE(True , eitherTrue (0));
REQUIRE_TYPE(False , eitherFalse(0));
REQUIRE(eitherValue(5).value == 5);
REQUIRE(eitherValue(0).value == 0);
auto five = eitherType(5);
REQUIRE(five.index() == 0);
auto zero = eitherType(0);
if (zero.index() != 1)
{
REQUIRE(zero.index() == 1); // Always false
}
else
{
REQUIRE(std::get<1>(zero).value == 0);
}
REQUIRE(eitherTrue (5).has_value() == true );
REQUIRE(eitherTrue (0).has_value() == false);
REQUIRE(eitherFalse(5).has_value() == false);
REQUIRE(eitherFalse(0).has_value() == true );
}
TEST_CASE("Test branch stack")
{
using namespace std::string_view_literals;
using sv = std::string_view;
auto select = [](int i) { return Decision{ [i](int j) { return i == j; } }; };
auto name = [](sv sv) { return Action { [sv](int) { return sv; } }; };
{
// Same return type
auto what = select(0) && name("a") || select(1) && name("b") || name("c");
REQUIRE_TYPE(sv, what(0));
REQUIRE(what(0) == "a");
REQUIRE(what(1) == "b");
REQUIRE(what(2) == "c");
}
{
// Different return types
auto stack = select(0) && makeValue || select(1) && makeAddable || makeNonDefault;
using Pair = impl::Either<Value, impl::Either<Addable, NonDefault>>;
REQUIRE_TYPE(Pair, stack(0));
REQUIRE(stack(0).index() == 0);
if (stack(1).index() != 1 || stack(2).index() != 1)
{
REQUIRE(stack(1).index() == 1); // Always false
REQUIRE(stack(2).index() == 1); // Always false
}
else
{
REQUIRE(std::get<1>(stack(1)).index() == 0);
REQUIRE(std::get<1>(stack(2)).index() == 1);
}
}
}
TEST_CASE("Test dynamic action")
{
Action half{ [](int i) { return float(i) / 2.f; } };
Action sqr { [](int i) { return float(i) * float(i); } };
ActionDynamic<float(int)> act{ half };
REQUIRE_TYPE(float, act(0));
REQUIRE(act(3) == 1.5f);
act = sqr;
REQUIRE(act(3) == 9.0f);
}