Add watch mode menu to runner

CMakeLists.txt

@@ -6,6 +6,7 @@ set(RUNNER_SOURCES
   ${PROJECT_SOURCE_DIR}/runner/helpers.cpp
   ${PROJECT_SOURCE_DIR}/runner/runner.cpp
   ${PROJECT_SOURCE_DIR}/runner/cmd-args.cpp
+  ${PROJECT_SOURCE_DIR}/runner/watch-mode.cpp
 )
 
 SET(RUNNER_OS_SOURCES

runner/main.cpp

@@ -1,6 +1,7 @@
 #include "runner.h"
 #include "cmd-args.h"
 #include "directory.h"
+#include "watch-mode.h"
 #include <iostream>
 
 static void showHelp()
@@ -13,13 +14,46 @@ static void showHelp()
   exit(0);
 }
 
+static int runTestsInPath(const std::string& path)
+{
+  const auto executables = Directory::findExecutableFiles(path, "test_");
+  return Runner::runTests(executables);
+}
+
 int main(int argc, char *argv[])
 {
   CmdArgs args(argc, argv);
 
   if (args.help())
     showHelp();
 
-  const auto executables = Directory::findExecutableFiles(args.path(), "test_");
-  return Runner::runTests(executables);
+  auto status = runTestsInPath(args.path());
+
+  if (args.watch())
+  {
+    while (1)
+    {
+      auto option = WatchMode::Option::None;
+      WatchMode::showHelp();
+
+      do
+      {
+        option = WatchMode::waitForInput();
+      } while (option == WatchMode::Option::None);
+
+      switch (option)
+      {
+        case WatchMode::Option::Quit:
+          exit(0);
+          break;
+        case WatchMode::Option::Trigger:
+          runTestsInPath(args.path());
+          break;
+        default:
+          break;
+      }
+    }
+  }
+
+  return status;
 }

runner/watch-mode.cpp

@@ -0,0 +1,61 @@
+#include "watch-mode.h"
+#include <iostream>
+#include <termios.h>
+#include <unistd.h>
+
+#define ASCII_GRAY "\u001b[38;5;243m"
+#define ASCII_BLACK "\u001b[38;5;232m"
+#define ASCII_BOLD "\u001b[1m"
+#define ASCII_RESET "\033[0m"
+
+static char waitForKey()
+{
+    struct termios old_term, new_term;
+    tcgetattr(STDIN_FILENO, &old_term);
+
+    new_term = old_term;
+    new_term.c_lflag &= ~(ICANON | ECHO);
+
+    tcsetattr(STDIN_FILENO, TCSANOW, &new_term);
+    char ch = getchar();
+    tcsetattr(STDIN_FILENO, TCSANOW, &old_term);
+
+    return ch;
+}
+
+WatchMode::Option WatchMode::waitForInput()
+{
+  auto key = waitForKey();
+
+  switch (key)
+  {
+    case 'f':
+      return Option::Failed;
+      break;
+    case 'p':
+      return Option::FileName;
+      break;
+    case 't':
+      return Option::TestName;
+      break;
+    case 'q':
+      return Option::Quit;
+      break;
+    case '\n':
+      return Option::Trigger;
+      break;
+  }
+
+  return Option::None;
+}
+
+void WatchMode::showHelp()
+{
+  std::cout << std::endl;
+  std::cout << ASCII_BOLD << "Watch Usage" << ASCII_RESET << std::endl;
+  std::cout << ASCII_GRAY << " › Press " << ASCII_BLACK << "f" << ASCII_GRAY <<" to run only failed tests." << ASCII_RESET << std::endl;
+  std::cout << ASCII_GRAY << " › Press " << ASCII_BLACK << "p" << ASCII_GRAY <<" to filter by a filename regex pattern." << ASCII_RESET << std::endl;
+  std::cout << ASCII_GRAY << " › Press " << ASCII_BLACK << "t" << ASCII_GRAY <<" to filter by a test name regex pattern." << ASCII_RESET << std::endl;
+  std::cout << ASCII_GRAY << " › Press " << ASCII_BLACK << "q" << ASCII_GRAY <<" to quit watch mode." << ASCII_RESET << std::endl;
+  std::cout << ASCII_GRAY << " › Press " << ASCII_BLACK << "Enter" ASCII_GRAY << " to trigger a test run." << ASCII_RESET << std::endl;
+}

runner/watch-mode.h

@@ -0,0 +1,17 @@
+#pragma once
+
+namespace WatchMode
+{
+  enum class Option
+  {
+    Failed,
+    FileName,
+    TestName,
+    Trigger,
+    Quit,
+    None
+  };
+
+  void showHelp();
+  Option waitForInput();
+}