Finish up edit field accessibility.

tests/notepad_fixture.c

@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+// Drive Wine's actual Notepad; the standard-control fixture covers edge cases.
+#include <windows.h>
+
+static DWORD notepad_pid;
+static HWND notepad;
+
+static BOOL CALLBACK find_notepad(HWND window, LPARAM unused) {
+  (void)unused;
+  DWORD pid;
+  GetWindowThreadProcessId(window, &pid);
+  if (pid == notepad_pid && IsWindowVisible(window) &&
+      FindWindowExW(window, NULL, L"Edit", NULL)) {
+    notepad = window;
+    return FALSE;
+  }
+  return TRUE;
+}
+
+static void key(WORD vk, BOOL control, BOOL shift) {
+  INPUT input[6] = {0};
+  UINT count = 0;
+  if (control) { input[count].ki.wVk = VK_CONTROL; ++count; }
+  if (shift) { input[count].ki.wVk = VK_SHIFT; ++count; }
+  input[count].ki.wVk = vk; ++count;
+  input[count].ki.wVk = vk; input[count].ki.dwFlags = KEYEVENTF_KEYUP; ++count;
+  if (shift) { input[count].ki.wVk = VK_SHIFT; input[count].ki.dwFlags = KEYEVENTF_KEYUP; ++count; }
+  if (control) { input[count].ki.wVk = VK_CONTROL; input[count].ki.dwFlags = KEYEVENTF_KEYUP; ++count; }
+  for (UINT i = 0; i < count; ++i) input[i].type = INPUT_KEYBOARD;
+  if (SendInput(count, input, sizeof(INPUT)) != count) ExitProcess(3);
+  Sleep(200);
+}
+
+int WINAPI WinMain(HINSTANCE instance, HINSTANCE previous, LPSTR args, int show) {
+  (void)instance; (void)previous; (void)args; (void)show;
+  STARTUPINFOW startup = {0};
+  PROCESS_INFORMATION process = {0};
+  startup.cb = sizeof(startup);
+  WCHAR command[] = L"notepad.exe";
+  if (!CreateProcessW(NULL, command, NULL, NULL, FALSE, 0, NULL, NULL, &startup, &process)) return 2;
+  notepad_pid = process.dwProcessId;
+  for (int i = 0; i < 100 && !notepad; ++i) {
+    EnumWindows(find_notepad, 0);
+    Sleep(50);
+  }
+  int result = 2;
+  if (notepad) {
+    HWND edit = FindWindowExW(notepad, NULL, L"Edit", NULL);
+    SetForegroundWindow(notepad);
+    SendMessageW(edit, WM_SETTEXT, 0, (LPARAM)L"hello beta\r\nNotepad second line");
+    SendMessageW(edit, EM_SETSEL, 0, 0);
+    Sleep(400);
+    key(VK_RIGHT, FALSE, FALSE); // e
+    key(VK_RIGHT, FALSE, FALSE); // l
+    key(VK_RIGHT, FALSE, FALSE); // l
+    key(VK_RIGHT, TRUE, FALSE);  // beta
+    key(VK_DOWN, FALSE, FALSE);  // second line
+    key(VK_HOME, FALSE, FALSE);
+    key(VK_RIGHT, FALSE, TRUE);  // N selected
+    key(VK_LEFT, FALSE, TRUE);   // N unselected
+    key(VK_DELETE, FALSE, FALSE);// N deleted
+    key(VK_MENU, FALSE, FALSE);
+    key(VK_ESCAPE, FALSE, FALSE);
+    key(VK_ESCAPE, FALSE, FALSE);
+    WCHAR text[80] = {0};
+    SendMessageW(edit, WM_GETTEXT, 80, (LPARAM)text);
+    if (!lstrcmpW(text, L"hello beta\r\notepad second line")) result = 0;
+    // Suppress the save prompt only in this test-owned, unsaved document.
+    SendMessageW(edit, EM_SETMODIFY, FALSE, 0);
+    PostMessageW(notepad, WM_CLOSE, 0, 0);
+    if (WaitForSingleObject(process.hProcess, 3000) != WAIT_OBJECT_0) result = 2;
+  }
+  CloseHandle(process.hThread);
+  CloseHandle(process.hProcess);
+  return result;
+}