From 55bfe49aa0faffbbdcb9df294011171ea055f9fd Mon Sep 17 00:00:00 2001
From: Jarryd Beck <jarro.2783@gmail.com>
Date: Fri, 26 Aug 2016 08:22:04 +1000
Subject: [PATCH] options test

---
 CMakeLists.txt      |  7 ++++---
 src/CMakeLists.txt  | 12 ++++++------
 test/CMakeLists.txt | 13 +++++++++++--
 test/options.cpp    | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 77 insertions(+), 11 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index fffb795..08ef64f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,9 +19,9 @@
 # THE SOFTWARE.
 
 IF(BIICODE)
-	include(biicode/cmake/tools)
-	ADD_BIICODE_TARGETS()
-	ACTIVATE_CPP11(INTERFACE ${BII_BLOCK_TARGET})
+    include(biicode/cmake/tools)
+    ADD_BIICODE_TARGETS()
+    ACTIVATE_CPP11(INTERFACE ${BII_BLOCK_TARGET})
 RETURN()
 
 ENDIF()
@@ -34,6 +34,7 @@ enable_testing()
 set(VERSION "0.0.1")
 
 option(CXXOPTS_BUILD_EXAMPLES "Set to ON to build examples" ON)
+option(CXXOPTS_BUILD_TESTS "Set to ON to build tests" OFF)
 
 set(CXXOPTS_LINKER_LIBRARIES "")
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index b750ef5..dfd768d 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -19,13 +19,13 @@
 # THE SOFTWARE.
 
 if(CXXOPTS_BUILD_EXAMPLES)
-	add_executable(example example.cpp cxxopts.hpp)
+    add_executable(example example.cpp cxxopts.hpp)
 
-	if (MSVC)
-		target_compile_options(example PUBLIC /W2)
-	elseif(CMAKE_CXX_COMPILER_ID MATCHES "[Cc]lang" OR CMAKE_CXX_COMPILER_ID MATCHES "GNU")
-		target_compile_options(example PUBLIC -std=c++11 -Wall)
-	endif()
+    if (MSVC)
+        target_compile_options(example PUBLIC /W2)
+    elseif(CMAKE_CXX_COMPILER_ID MATCHES "[Cc]lang" OR CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+        target_compile_options(example PUBLIC -std=c++11 -Wall)
+    endif()
 endif()
 
 install(FILES cxxopts.hpp DESTINATION include)
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index d2a0eff..686e1f6 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -1,3 +1,12 @@
-add_executable(options_test options.cpp)
+if (CXXOPTS_BUILD_TESTS)
+    add_executable(options_test options.cpp)
+
+    if (MSVC)
+        target_compile_options(options_test PUBLIC /W2)
+    elseif(CMAKE_CXX_COMPILER_ID MATCHES "[Cc]lang" OR CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+        target_compile_options(options_test PUBLIC -std=c++11 -Wall)
+    endif()
+
+    add_test(options options_test)
+endif()
 
-add_test(options options_test)
diff --git a/test/options.cpp b/test/options.cpp
index 35f38ff..ec9be10 100644
--- a/test/options.cpp
+++ b/test/options.cpp
@@ -1,6 +1,62 @@
 #define CATCH_CONFIG_MAIN
 #include "catch.hpp"
 
+#include "../src/cxxopts.hpp"
+
+class Argv {
+  public:
+
+  Argv(int n, const char** argv) 
+  : m_argv(new char*[n])
+  {
+    for (int i = 0; i != n; ++i) {
+      auto len = strlen(argv[i]) + 1;
+      auto ptr = std::unique_ptr<char[]>(new char[len]);
+
+      strcpy(ptr.get(), argv[i]);
+      m_args.push_back(std::move(ptr));
+      m_argv.get()[i] = m_args.back().get();
+    }
+  }
+
+  char** argv() const {
+    return m_argv.get();
+  }
+
+  private:
+
+  std::vector<std::unique_ptr<char[]>> m_args;
+  std::unique_ptr<char*[]> m_argv;
+};
+
 TEST_CASE("Basic options", "[options]")
 {
+
+  cxxopts::Options options("tester", " - test basic options");
+
+  options.add_options()
+    ("long", "a long option")
+    ("s,short", "a short option")
+    ("value", "an option with a value", cxxopts::value<std::string>())
+    ("a,av", "a short option with a value");
+
+  const char* args[] = {
+    "tester",
+    "--long",
+    "-s",
+    "--value",
+    "value",
+    "-a",
+    "b"
+  };
+
+  int argc = sizeof(args) / sizeof(args[0]);
+
+  Argv argv(argc, args);
+
+  char** actual_argv = argv.argv();
+
+  options.parse(argc, actual_argv);
+
+  CHECK(options.count("long") == 1);
 }
--
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