Imoproved

Author: snandasena

app/configs/include/configs/StartupConfig.h

@@ -5,4 +5,19 @@
 #ifndef DESIGN_PATTERNS_STARTUPCONFIG_H
 #define DESIGN_PATTERNS_STARTUPCONFIG_H
 
+
+#include <cstdint>
+#include <optional>
+
+#include "types/ReportFormat.h"
+
+struct StartupConfig
+{
+    const std::uint16_t port;
+    const types::ReportFormat format;
+};
+
+std::optional<const StartupConfig> optionsToStartupConfig(int arg, char *argv[]);
+
+
 #endif //DESIGN_PATTERNS_STARTUPCONFIG_H

app/configs/src/StartupConfig.cpp

@@ -2,3 +2,31 @@
 // Created by sajith on 6/23/22.
 //
 
+#include "configs/StartupConfig.h"
+
+#include <iostream>
+
+#include <boost/program_options.hpp>
+
+
+namespace po = boost::program_options;
+
+std::optional<const StartupConfig> optionsToStartupConfig(int argc, char *argv[])
+{
+    po::options_description desc{"Allowed options"};
+    desc.add_options()
+            ("help", "Produce help message")
+            ("port", po::value<std::uint16_t>(), "Set server port")
+            ("format", po::value<types::ReportFormat>(), "Set tax report format (json or xml)");
+
+    po::variables_map vm;
+    po::store(po::parse_command_line(argc, argv, desc), vm);
+    po::notify(vm);
+
+    if (vm.count("help"))
+    {
+        std::cout << desc << '\n';
+        return std::nullopt;
+    }
+    return StartupConfig{vm["port"].as<std::uint16_t>(), vm["format"].as<types::ReportFormat>()};
+}

app/configs/test/CMakeLists.txt

@@ -0,0 +1,18 @@
+project(ConfigsTests)
+
+find_package(GTest REQUIRED)
+
+include_directories(${GTEST_INCLUDE_DIRS})
+
+set(SOURCES StartupConfig_tests.cpp)
+
+add_executable(${PROJECT_NAME} ${SOURCES})
+
+target_link_libraries(${PROJECT_NAME} PRIVATE
+        GTest::GTest
+        GTest::Main
+        Configs
+        Common
+        )
+
+add_test(${PROJECT_NAME} ${PROJECT_NAME})

app/configs/test/StartupConfig_tests.cpp

@@ -0,0 +1,39 @@
+//
+// Created by sajith on 6/23/22.
+//
+
+#include "configs/StartupConfig.h"
+
+#include <gtest/gtest.h>
+#include <string>
+
+#include "types/ReportFormat.h"
+
+char arg0[] = "Program name";
+char arg1[] = "--port";
+char arg2[] = "8000";
+char arg3[] = "--format";
+char arg4[] = "xml";
+
+TEST(StartupConfigTests, validOptions_returnsStartupConfig)
+{
+    char *argv[] = {&arg0[0], &arg1[0], &arg2[0], &arg3[0], &arg4[0], nullptr};
+    const auto config = optionsToStartupConfig(5, argv);
+    ASSERT_TRUE(config);
+    ASSERT_EQ(config->port, 8000);
+    ASSERT_EQ(config->format, types::ReportFormat::Xml);
+}
+
+TEST(StartupConfigTests, helpOption_returnsEmptyStartupConfig)
+{
+    char help[] = "--help";
+    char *argv[] = {&arg0[0], &help[0], NULL};
+    const auto config = optionsToStartupConfig(2, argv);
+    ASSERT_FALSE(config);
+}
+
+TEST(StartupConfigTests, notAllOptions_throws)
+{
+    char* argv[] = { &arg0[0], &arg1[0], &arg2[0], NULL };
+    ASSERT_ANY_THROW(optionsToStartupConfig(3, argv));
+}