From 7a525a85ceef93bdec54b05ee072e2bbe790a502 Mon Sep 17 00:00:00 2001
From: Gulliver <gulliver@traumkristalle.net>
Date: Mon, 21 Nov 2022 22:44:07 +0100
Subject: [PATCH] added catch2 for unit tests and first test in test/test.cpp

---
 .gitignore     |  3 +++
 CMakeLists.txt | 37 ++++++++++++++++++++++++++++++++-----
 test/test.cpp  | 14 ++++++++++++++
 3 files changed, 49 insertions(+), 5 deletions(-)
 create mode 100644 test/test.cpp

diff --git a/.gitignore b/.gitignore
index c7f3b7d..c0be386 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
+.idea
+cmake-build-debug
+
 # ---> C++
 # Prerequisites
 *.d
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4738a99..9316382 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,6 +17,7 @@ endif()
 project(oc-mint VERSION 0.0.1 LANGUAGES CXX)
 
 include(FetchContent)
+
 #
 # crow project Configuration variables
 #
@@ -45,6 +46,20 @@ if(NOT expected_POPULATED)
   FetchContent_Populate(expected)
 endif(NOT expected_POPULATED)
 
+include(CTest)
+enable_testing()
+
+set(CATCH_INSTALL_DOCS Off)
+set(CATCH_INSTALL_EXTRAS Off)
+FetchContent_Declare(
+  Catch2
+  GIT_REPOSITORY https://github.com/catchorg/Catch2.git
+  GIT_TAG        v3.2.0
+)
+
+FetchContent_MakeAvailable(Catch2)
+
+#add doxygen documentation
 find_package(Doxygen
              REQUIRED dot
              OPTIONAL_COMPONENTS mscgen dia)
@@ -52,9 +67,21 @@ set(DOXYGEN_HAVE_DOT YES)
 doxygen_add_docs(
     doc
     src
-    COMMENT "Generate dcoumentation"
+    COMMENT "Generate documentation"
 )
-set(API_SOURCES src/main.cpp src/model.cpp src/model.hpp)
-add_executable(oc-mint ${API_SOURCES})
-target_link_libraries(oc-mint PRIVATE Crow::Crow INTERFACE tl::expected::expected)
-target_include_directories(oc-mint PRIVATE ${expected_SOURCE_DIR}/include) 
+
+# build common library
+set(LIB_SOURCES src/model.cpp src/model.hpp)
+add_library(oc-mint-lib ${LIB_SOURCES})
+target_link_libraries(oc-mint-lib PUBLIC Crow::Crow)
+target_include_directories(oc-mint-lib PUBLIC ${expected_SOURCE_DIR}/include src) 
+
+add_executable(oc-mint src/main.cpp)
+target_link_libraries(oc-mint PRIVATE oc-mint-lib INTERFACE tl::expected::expected)
+
+## these are unittests that can be run on any platform
+add_executable(tests test/test.cpp)
+target_link_libraries(tests
+                      oc-mint-lib
+		      Catch2::Catch2WithMain)
+add_test(tests tests)
diff --git a/test/test.cpp b/test/test.cpp
new file mode 100644
index 0000000..601f7f2
--- /dev/null
+++ b/test/test.cpp
@@ -0,0 +1,14 @@
+#include <catch2/catch_test_macros.hpp>
+#include "model.hpp"
+
+TEST_CASE( "PublicKey::to_json", "[to_json]" ) {
+  PublicKey k {"daaa63ddda38c189b8c49020c8276adbe0a695685a...",
+	       "65537" };
+
+  auto json = k.to_json();
+
+  REQUIRE( json["modulus"].dump() == "\"" + k.modulus + "\""  );
+  REQUIRE( json["public_exponent"].dump() == "\"" + k.public_exponent+"\"" );
+  REQUIRE( json["type"].dump() == "\"rsa public key\"" );
+  REQUIRE( json.keys().size() == 3 );
+}