robot_name: initial commit

cpp/robot-name/robot_name_test.cpp

@@ -0,0 +1,57 @@
+#include "robot_name.h"
+#define BOOST_TEST_MAIN
+#include <boost/test/unit_test.hpp>
+#include <boost/regex.hpp>
+
+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