diff --git a/cpp/gigasecond/CMakeLists.txt b/cpp/gigasecond/CMakeLists.txt new file mode 100644 index 0000000..56a3675 --- /dev/null +++ b/cpp/gigasecond/CMakeLists.txt @@ -0,0 +1,59 @@ +# Get the exercise name from the current directory +get_filename_component(exercise ${CMAKE_CURRENT_SOURCE_DIR} NAME) + +# Basic CMake project +cmake_minimum_required(VERSION 2.8.11) + +# Name the project after the exercise +project(${exercise} CXX) + +# Locate Boost libraries: unit_test_framework, date_time and regex +set(Boost_USE_STATIC_LIBS ON) +set(Boost_USE_MULTITHREADED ON) +set(Boost_USE_STATIC_RUNTIME OFF) +find_package(Boost 1.55 REQUIRED COMPONENTS unit_test_framework date_time regex) + +# Enable C++11 features on gcc/clang +if("${CMAKE_CXX_COMPILER_ID}" MATCHES "(GNU|Clang)") + set(CMAKE_CXX_FLAGS "-std=c++11") +endif() + +# Configure to run all the tests? +if(${EXERCISM_RUN_ALL_TESTS}) + add_definitions(-DEXERCISM_RUN_ALL_TESTS) +endif() + +# Get a source filename from the exercise name by replacing -'s with _'s +string(REPLACE "-" "_" file ${exercise}) + +# Implementation could be only a header +if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${file}.cpp) + set(exercise_cpp ${file}.cpp) +else() + set(exercise_cpp "") +endif() + +# Include a test helper header if it exists +if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/require_equal_containers.h) + set(test_helper require_equal_containers.h) +else() + set(test_helper "") +endif() + +# Build executable from sources and headers +add_executable(${exercise} ${file}_test.cpp ${test_helper} ${exercise_cpp} ${file}.h) + +# We need boost includes +target_include_directories(${exercise} PRIVATE ${Boost_INCLUDE_DIRS}) + +# We need boost libraries +target_link_libraries(${exercise} ${Boost_LIBRARIES}) + +# Tell MSVC not to warn us about unchecked iterators in debug builds +if(${MSVC}) + set_target_properties(${exercise} PROPERTIES + COMPILE_DEFINITIONS_DEBUG _SCL_SECURE_NO_WARNINGS) +endif() + +# Run the tests on every build +add_custom_command(TARGET ${exercise} POST_BUILD COMMAND ${exercise}) diff --git a/cpp/gigasecond/README.md b/cpp/gigasecond/README.md new file mode 100644 index 0000000..526eba4 --- /dev/null +++ b/cpp/gigasecond/README.md @@ -0,0 +1,41 @@ +# Gigasecond + +Write a program that will calculate the date that someone turned or will celebrate their 1 Gs anniversary. + +A gigasecond is one billion (10**9) seconds. + +## Getting Started + +Make sure you have read the [getting started with C++](http://help.exercism.io/getting-started-with-cpp.html) +page on the [exercism help site](http://help.exercism.io/). This covers +the basic information on setting up the development environment expected +by the exercises. + +## Passing the Tests + +Get the first test compiling, linking and passing by following the [three +rules of test-driven development](http://butunclebob.com/ArticleS.UncleBob.TheThreeRulesOfTdd). +Create just enough structure by declaring namespaces, functions, classes, +etc., to satisfy any compiler errors and get the test to fail. Then write +just enough code to get the test to pass. Once you've done that, +uncomment the next test by moving the following line past the next test. + +```C++ +#if defined(EXERCISM_RUN_ALL_TESTS) +``` + +This may result in compile errors as new constructs may be invoked that +you haven't yet declared or defined. Again, fix the compile errors minimally +to get a failing test, then change the code minimally to pass the test, +refactor your implementation for readability and expressiveness and then +go on to the next test. + +Try to use standard C++11 facilities in preference to writing your own +low-level algorithms or facilities by hand. [CppReference](http://en.cppreference.com/) +is a wiki reference to the C++ language and standard library. If you +are new to C++, but have programmed in C, beware of +[C traps and pitfalls](http://www.slideshare.net/LegalizeAdulthood/c-traps-and-pitfalls-for-c-programmers). + +## Source + +Chapter 9 in Chris Pine's online Learn to Program tutorial. [view source](http://pine.fm/LearnToProgram/?Chapter=09) diff --git a/cpp/gigasecond/gigasecond.h b/cpp/gigasecond/gigasecond.h new file mode 100644 index 0000000..48759bd --- /dev/null +++ b/cpp/gigasecond/gigasecond.h @@ -0,0 +1,18 @@ +#pragma once + +#define EXERCISM_RUN_ALL_TESTS + +#include + + +namespace gigasecond { + +typedef boost::gregorian::date date_t; +typedef boost::gregorian::date_duration date_duration_t; + +static inline date_t advance(date_t date) +{ + return date + date_duration_t(1000000000 / (60*60*24)); +} + +} diff --git a/cpp/gigasecond/gigasecond_test.cpp b/cpp/gigasecond/gigasecond_test.cpp new file mode 100644 index 0000000..79cb452 --- /dev/null +++ b/cpp/gigasecond/gigasecond_test.cpp @@ -0,0 +1,32 @@ +#include "gigasecond.h" +#define BOOST_TEST_MAIN +#include + +// See +// for documentation on boost::gregorian::date + +BOOST_AUTO_TEST_CASE(test_1) +{ + const auto actual = gigasecond::advance(boost::gregorian::date(2011, 4, 26)); + + const boost::gregorian::date expected(2043, 1, 2); + BOOST_REQUIRE_EQUAL(expected, actual); +} + +#if defined(EXERCISM_RUN_ALL_TESTS) +BOOST_AUTO_TEST_CASE(test_2) +{ + const auto actual = gigasecond::advance(boost::gregorian::date(1977, 6, 14)); + + const boost::gregorian::date expected(2009, 2, 20); + BOOST_REQUIRE_EQUAL(expected, actual); +} + +BOOST_AUTO_TEST_CASE(test_3) +{ + const auto actual = gigasecond::advance(boost::gregorian::date(1959, 7, 20)); + + const boost::gregorian::date expected(1991, 3, 28); + BOOST_REQUIRE_EQUAL(expected, actual); +} +#endif