From e1085191f9cd192be20069e7a9da69a3423f5755 Mon Sep 17 00:00:00 2001
From: Dmitry Kokorin <dmitry@kokorin.org>
Date: Sun, 6 Mar 2016 19:41:39 +0300
Subject: [PATCH] leap: initial commit

---
 cpp/leap/CMakeLists.txt | 52 +++++++++++++++++++++++++++++++++++
 cpp/leap/README.md      | 60 +++++++++++++++++++++++++++++++++++++++++
 cpp/leap/leap_test.cpp  | 30 +++++++++++++++++++++
 3 files changed, 142 insertions(+)
 create mode 100644 cpp/leap/CMakeLists.txt
 create mode 100644 cpp/leap/README.md
 create mode 100644 cpp/leap/leap_test.cpp

diff --git a/cpp/leap/CMakeLists.txt b/cpp/leap/CMakeLists.txt
new file mode 100644
index 0000000..95c7011
--- /dev/null
+++ b/cpp/leap/CMakeLists.txt
@@ -0,0 +1,52 @@
+# 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 ${file}.cpp)
+else()
+    set(exercise_cpp "")
+endif()
+
+# Build executable from sources and headers
+add_executable(${exercise} ${file}_test.cpp ${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/leap/README.md b/cpp/leap/README.md
new file mode 100644
index 0000000..83130c7
--- /dev/null
+++ b/cpp/leap/README.md
@@ -0,0 +1,60 @@
+# Leap
+
+Write a program that will take a year and report if it is a leap year.
+
+The tricky thing here is that a leap year in the Gregorian calendar occurs:
+
+```plain
+on every year that is evenly divisible by 4
+  except every year that is evenly divisible by 100
+    unless the year is also evenly divisible by 400
+```
+
+For example, 1997 is not a leap year, but 1996 is.  1900 is not a leap
+year, but 2000 is.
+
+If your language provides a method in the standard library that does
+this look-up, pretend it doesn't exist and implement it yourself.
+
+## Notes
+
+For a delightful, four minute explanation of the whole leap year
+phenomenon, go watch [this youtube video][video].
+
+[video]: http://www.youtube.com/watch?v=xX96xng7sAE
+
+## 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
+
+JavaRanch Cattle Drive, exercise 3 [view source](http://www.javaranch.com/leap.jsp)
diff --git a/cpp/leap/leap_test.cpp b/cpp/leap/leap_test.cpp
new file mode 100644
index 0000000..f83eac5
--- /dev/null
+++ b/cpp/leap/leap_test.cpp
@@ -0,0 +1,30 @@
+#include "leap.h"
+#define BOOST_TEST_MAIN
+#include <boost/test/unit_test.hpp>
+
+BOOST_AUTO_TEST_CASE(a_known_leap_year)
+{
+    BOOST_REQUIRE(leap::is_leap_year(1996));
+}
+
+#if defined(EXERCISM_RUN_ALL_TESTS)
+BOOST_AUTO_TEST_CASE(any_old_year)
+{
+    BOOST_REQUIRE(!leap::is_leap_year(1997));
+}
+
+BOOST_AUTO_TEST_CASE(turn_of_the_20th_century)
+{
+    BOOST_REQUIRE(!leap::is_leap_year(1900));
+}
+
+BOOST_AUTO_TEST_CASE(turn_of_the_21st_century)
+{
+    BOOST_REQUIRE(leap::is_leap_year(2000));
+}
+
+BOOST_AUTO_TEST_CASE(turn_of_the_25th_century)
+{
+    BOOST_REQUIRE(leap::is_leap_year(2400));;
+}
+#endif