Add Catch2 test framework. Add example test. Add tests build instructions.

CMakeLists.txt

@@ -0,0 +1,16 @@
+cmake_minimum_required(VERSION 3.0)
+
+project(cmake_test)
+
+# Prepare "Catch" library for other executables
+set(CATCH_INCLUDE_DIR Catch2)
+add_library(Catch INTERFACE)
+target_include_directories(Catch INTERFACE ${CATCH_INCLUDE_DIR})
+
+# Make test executable
+set(TEST_SOURCES 
+	Tests/tests.cpp
+	Tests/Example_test.cpp
+)
+add_executable(tests ${TEST_SOURCES})
+target_link_libraries(tests Catch)

README.md

@@ -51,3 +51,23 @@ or you can also save the output code to the file (in so called `HEX`-format) `"F
 `Sketch->ExportCompiledBinary`  
 and then upload it to the printer using the program `"FirmwareUpdater"`  
 _note: this file is created in the directory `"Firmware/"`_  
+
+# 3. Automated tests
+## Prerequisites
+c++11 compiler e.g. g++ 6.3.1
+cmake
+build system - ninja or gnu make
+## Building
+Create folder where you want to build tests.
+Example:
+cd ..
+mkdir Prusa-Firmware-test
+Generate build scripts in target folder.
+Example:
+cd Prusa-Firmware-test
+cmake -G "Eclipse CDT4 - Ninja" ../Prusa-Firmware
+Build it.
+Example:
+ninja
+## Runing
+./tests

Tests/Example_test.cpp

@@ -0,0 +1,12 @@
+#include "catch.hpp"
+
+unsigned int Factorial( unsigned int number ) {
+    return number <= 1 ? number : Factorial(number-1)*number;
+}
+
+TEST_CASE( "Factorials are computed", "[factorial]" ) {
+    REQUIRE( Factorial(1) == 1 );
+    REQUIRE( Factorial(2) == 2 );
+    REQUIRE( Factorial(3) == 6 );
+    REQUIRE( Factorial(10) == 3628800 );
+}

Tests/tests.cpp

@@ -0,0 +1,2 @@
+#define CATCH_CONFIG_MAIN
+#include "catch.hpp"