new cpp version with just catch2 and approvals. Builds faster than the version in the cpp folder

cpp-catch2/.gitignore

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+/build_meson/
+/subprojects/Catch2-*/
+/subprojects/packagecache/
+/cmake-build-*/

cpp-catch2/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.14..3.16)
+set(CMAKE_VERBOSE_MAKEFILE ON)
+project(GildedRoseKata VERSION 1.0
+        DESCRIPTION "The GildedRose Refactoring kata for an approval testing approach"
+        LANGUAGES CXX)
+include(FetchContent)
+
+FetchContent_Declare(
+        catch2
+        GIT_REPOSITORY https://github.com/catchorg/Catch2.git
+        GIT_TAG v2.12.2
+)
+FetchContent_MakeAvailable(catch2)
+LIST(APPEND CMAKE_MODULE_PATH
+        ${catch2_SOURCE_DIR}/contrib
+        )
+
+FetchContent_Declare(
+        approvaltests_ho
+        URL https://github.com/approvals/ApprovalTests.cpp/releases/download/v.10.0.0/ApprovalTests.v.10.0.0.hpp
+        DOWNLOAD_NO_EXTRACT TRUE
+        DOWNLOAD_DIR ${CMAKE_CURRENT_BINARY_DIR}/approvaltests
+        DOWNLOAD_NAME ApprovalTests.v.10.0.0.hpp
+)
+FetchContent_GetProperties(approvaltests_ho)
+if (NOT approvaltests_ho_POPULATED)
+    FetchContent_Populate(approvaltests_ho)
+endif ()
+add_library(approvaltests INTERFACE)
+target_include_directories(approvaltests
+        INTERFACE ${CMAKE_CURRENT_BINARY_DIR}/approvaltests
+        INTERFACE ${catch2_SOURCE_DIR}/single_include/catch2
+        )
+
+add_executable(gildedrose_catch2
+        src/GildedRose.h
+        src/GildedRose.cc
+        test/gildedrose_catch.cpp
+        test/main.cpp)
+set_target_properties(gildedrose_catch2 PROPERTIES CXX_STANDARD 11)
+target_include_directories(gildedrose_catch2
+        PUBLIC src)
+target_link_libraries(gildedrose_catch2 Catch2::Catch2 approvaltests)
+
+include(CTest)
+include(ParseAndAddCatchTests)
+ParseAndAddCatchTests(gildedrose_catch2)

cpp-catch2/README.md

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+C++ version of Gilded Rose with Catch 2 and Approvals
+======================================================
+
+This is a C++ start of the ApprovalTest version of the Gilded Rose Refactoring Kata. See
+the [top level readme](https://github.com/emilybache/GildedRose-Refactoring-Kata)
+ for a general description of the exercise.
+
+
+CMake
+-----
+
+CMake is included in CLion from JetBrains. Without CMake files
+CLion has a hard time to handle c-projects.
+
+To install CMake (if you don't use CLion) on macOS using brew
+
+    brew install cmake
+
+Tested on CMake 3.15.3 (included with CLion 2019.3) on 	macOS
+  

cpp-catch2/src/GildedRose.cc

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+#include "GildedRose.h"
+
+GildedRose::GildedRose(vector<Item> & items) : items(items)
+{}
+    
+void GildedRose::updateQuality() 
+{
+    for (int i = 0; i < items.size(); i++)
+    {
+        if (items[i].name != "Aged Brie" && items[i].name != "Backstage passes to a TAFKAL80ETC concert")
+        {
+            if (items[i].quality > 0)
+            {
+                if (items[i].name != "Sulfuras, Hand of Ragnaros")
+                {
+                    items[i].quality = items[i].quality - 1;
+                }
+            }
+        }
+        else
+        {
+            if (items[i].quality < 50)
+            {
+                items[i].quality = items[i].quality + 1;
+
+                if (items[i].name == "Backstage passes to a TAFKAL80ETC concert")
+                {
+                    if (items[i].sellIn < 11)
+                    {
+                        if (items[i].quality < 50)
+                        {
+                            items[i].quality = items[i].quality + 1;
+                        }
+                    }
+
+                    if (items[i].sellIn < 6)
+                    {
+                        if (items[i].quality < 50)
+                        {
+                            items[i].quality = items[i].quality + 1;
+                        }
+                    }
+                }
+            }
+        }
+
+        if (items[i].name != "Sulfuras, Hand of Ragnaros")
+        {
+            items[i].sellIn = items[i].sellIn - 1;
+        }
+
+        if (items[i].sellIn < 0)
+        {
+            if (items[i].name != "Aged Brie")
+            {
+                if (items[i].name != "Backstage passes to a TAFKAL80ETC concert")
+                {
+                    if (items[i].quality > 0)
+                    {
+                        if (items[i].name != "Sulfuras, Hand of Ragnaros")
+                        {
+                            items[i].quality = items[i].quality - 1;
+                        }
+                    }
+                }
+                else
+                {
+                    items[i].quality = items[i].quality - items[i].quality;
+                }
+            }
+            else
+            {
+                if (items[i].quality < 50)
+                {
+                    items[i].quality = items[i].quality + 1;
+                }
+            }
+        }
+    }
+}

cpp-catch2/src/GildedRose.h

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+#include <string>
+#include <vector>
+
+using namespace std;
+
+class Item
+{
+public:
+    string name;
+    int sellIn;
+    int quality;
+    Item(string name, int sellIn, int quality) : name(name), sellIn(sellIn), quality(quality) 
+    {}
+};
+
+class GildedRose
+{
+public:
+    vector<Item> & items;
+    GildedRose(vector<Item> & items);
+    
+    void updateQuality();
+};
+

cpp-catch2/test/ApprovalTests.hpp

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+#include "ApprovalTests.v.10.0.0.hpp"

cpp-catch2/test/gildedrose_catch.cpp

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+#include "catch2/catch.hpp"
+#include "ApprovalTests.hpp"
+
+#include "GildedRose.h"
+
+TEST_CASE("Foo") {
+
+    vector<Item> items;
+    items.push_back(Item("foo", 0, 0));
+    GildedRose app(items);
+    app.updateQuality();
+    REQUIRE("fixme" == app.items[0].name);
+
+}

cpp-catch2/test/main.cpp

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+#define CATCH_CONFIG_MAIN
+#define APPROVALS_CATCH
+
+#include "catch2/catch.hpp"
+#include "ApprovalTests.hpp"