Merge in changes from master

test_package/CMakeLists.txt

@@ -0,0 +1,14 @@
+cmake_minimum_required(VERSION 2.8.12)
+project(PackageTest CXX)
+
+include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
+conan_basic_setup()
+
+add_executable(example example.cpp)
+target_link_libraries(example ${CONAN_LIBS})
+
+# CTest is a testing tool that can be used to test your project.
+# enable_testing()
+# add_test(NAME example
+#          WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/bin
+#          COMMAND example)

test_package/conanfile.py

@@ -0,0 +1,25 @@
+import os
+
+from conans import ConanFile, CMake, tools
+
+
+class ExpectedTestConan(ConanFile):
+    settings = "os", "compiler", "build_type", "arch"
+    generators = "cmake"
+
+    def build(self):
+        cmake = CMake(self)
+        # Current dir is "test_package/build/<build_id>" and CMakeLists.txt is
+        # in "test_package"
+        cmake.configure()
+        cmake.build()
+
+    def imports(self):
+        self.copy("*.dll", dst="bin", src="bin")
+        self.copy("*.dylib*", dst="bin", src="lib")
+        self.copy('*.so*', dst='bin', src='lib')
+
+    def test(self):
+        if not tools.cross_building(self.settings):
+            os.chdir("bin")
+            self.run(".%sexample" % os.sep)

test_package/example.cpp

@@ -0,0 +1,16 @@
+#include <tl/expected.hpp>
+
+tl::expected<int, const char*> maybe_do_something(int i) {
+  if (i < 5) {
+    return 0;
+  }
+  else {
+    return tl::make_unexpected("Uh oh");
+  }
+}
+
+int main(int argc, char** argv) {
+  (void)argv;
+
+  return maybe_do_something(0).value_or(-1);
+}