rework Process API & tests

* Add separate classes ProcessParameters & ShellParameters for
Process::create() and Process::shell() methods.
* Add a separate "worker" executable. It's used in tests via a fairly
complicated scheme, receiving orders to execute via a shared memory
region.
* Add tests that utilize the Console API, reading console window's
screen buffer directly, making for more reliable tests & broader
coverage.

2 files changed, 57 insertions, 1 deletions

diff --git a/include/winapi/process.hpp b/include/winapi/process.hpp
index 5c9e3c9..095b50c 100644
--- a/include/winapi/process.hpp
+++ b/include/winapi/process.hpp
@@ -11,6 +11,7 @@
 #include "resource.hpp"
 
 #include <boost/config.hpp>
+#include <boost/optional.hpp>
 
 #include <windows.h>
 
@@ -19,12 +20,40 @@
 
 namespace winapi {
 
+struct ProcessParameters {
+    enum ConsoleCreationMode {
+        ConsoleNone,
+        ConsoleInherit,
+        ConsoleNew,
+    };
+
+    explicit ProcessParameters(const CommandLine& cmd_line) : cmd_line{cmd_line} {}
+
+    CommandLine cmd_line;
+    boost::optional<process::IO> io;
+    ConsoleCreationMode console_mode = ConsoleNew;
+};
+
+struct ShellParameters : ProcessParameters {
+    explicit ShellParameters(const CommandLine& cmd_line) : ProcessParameters{cmd_line} {}
+
+    static ShellParameters runas(const CommandLine& cmd_line) {
+        ShellParameters params{cmd_line};
+        params.verb = "runas";
+        return params;
+    }
+
+    boost::optional<std::string> verb;
+};
+
 class Process {
 public:
+    static Process create(ProcessParameters);
     static Process create(const CommandLine&);
     static Process create(const CommandLine&, process::IO);
 
-    static Process runas(const CommandLine&);
+    static Process shell(const ShellParameters&);
+    static Process shell(const CommandLine&);
 
     bool is_running() const;
     void wait() const;
diff --git a/include/winapi/window_style.hpp b/include/winapi/window_style.hpp
new file mode 100644
index 0000000..dd12a56
--- /dev/null
+++ b/include/winapi/window_style.hpp
@@ -0,0 +1,27 @@
+// Copyright (c) 2020 Egor Tensin <Egor.Tensin@gmail.com>
+// This file is part of the "winapi-common" project.
+// For details, see https://github.com/egor-tensin/winapi-common.
+// Distributed under the MIT License.
+
+#pragma once
+
+namespace winapi {
+
+enum class WindowStyle {
+    // https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-showwindow
+    ForceMinimize = 11,
+    Hide = 0,
+    Maximize = 3,
+    Minimize = 6,
+    Restore = 9,
+    Show = 5,
+    ShowDefault = 10,
+    ShowMaximized = 3,
+    ShowMinimized = 2,
+    ShowMinNoActive = 7,
+    ShowNA = 8,
+    ShowNoActivate = 4,
+    ShowNormal = 1,
+};
+
+} // namespace winapi