diff --git a/cpp/robot-name/CMakeLists.txt b/cpp/robot-name/CMakeLists.txt new file mode 100644 index 0000000..95c7011 --- /dev/null +++ b/cpp/robot-name/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/robot-name/README.md b/cpp/robot-name/README.md new file mode 100644 index 0000000..f7afae9 --- /dev/null +++ b/cpp/robot-name/README.md @@ -0,0 +1,53 @@ +# Robot Name + +Write a program that manages robot factory settings. + +When robots come off the factory floor, they have no name. + +The first time you boot them up, a random name is generated, such as +RX837 or BC811. + +Every once in a while we need to reset a robot to its factory settings, +which means that their name gets wiped. The next time you ask, it will +respond with a new random name. + +The names must be random: they should not follow a predictable sequence. +Random names means a risk of collisions. Your solution should not allow +the use of the same name twice when avoidable. In some exercism language +tracks there are tests to ensure that the same name is never used twice. + +## 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 + +A debugging session with Paul Blackwell at gSchool. [view source](http://gschool.it) diff --git a/cpp/robot-name/robot_name_test.cpp b/cpp/robot-name/robot_name_test.cpp new file mode 100644 index 0000000..cb20eaf --- /dev/null +++ b/cpp/robot-name/robot_name_test.cpp @@ -0,0 +1,57 @@ +#include "robot_name.h" +#define BOOST_TEST_MAIN +#include +#include + +using namespace std; + +namespace +{ +const boost::regex name_pattern{R"name(^[[:alpha:]]{2}\d{3}$)name"}; +} + +BOOST_AUTO_TEST_CASE(has_a_name) +{ + const robot_name::robot robot; + + BOOST_REQUIRE(boost::regex_match(robot.name(), name_pattern)); +} + +#if defined(EXERCISM_RUN_ALL_TESTS) +BOOST_AUTO_TEST_CASE(name_is_the_same_each_time) +{ + const robot_name::robot robot; + + BOOST_REQUIRE_EQUAL(robot.name(), robot.name()); +} + +BOOST_AUTO_TEST_CASE(different_robots_have_different_names) +{ + const robot_name::robot robot_one; + const robot_name::robot robot_two; + + BOOST_REQUIRE_NE(robot_one.name(), robot_two.name()); +} + +BOOST_AUTO_TEST_CASE(is_able_to_reset_name) +{ + robot_name::robot robot; + const auto original_name = robot.name(); + + robot.reset(); + + BOOST_REQUIRE_NE(original_name, robot.name()); +} + +BOOST_AUTO_TEST_CASE(exhausting_digits_yields_different_names) +{ + robot_name::robot robot; + auto last_name = robot.name(); + + for (int i = 0; i < 1000; ++i) { + robot.reset(); + BOOST_REQUIRE_NE(last_name, robot.name()); + BOOST_REQUIRE(boost::regex_match(robot.name(), name_pattern)); + } +} +#endif