test: tty-test.c: restore win32 SIGWINCH handler

test/functional/fixtures/tty-test.c

@@ -49,6 +49,7 @@ static void walk_cb(uv_handle_t *handle, void *arg)
   }
 }
 
+#ifndef WIN32
 static void sig_handler(int signum)
 {
   switch (signum) {
@@ -65,6 +66,17 @@ static void sig_handler(int signum)
     return;
   }
 }
+#else
+static void sigwinch_cb(uv_signal_t *handle, int signum)
+{
+  int width, height;
+  uv_tty_t out;
+  uv_tty_init(uv_default_loop(), &out, fileno(stdout), 0);
+  uv_tty_get_winsize(&out, &width, &height);
+  fprintf(stderr, "rows: %d, cols: %d\n", height, width);
+  uv_close((uv_handle_t *)&out, NULL);
+}
+#endif
 
 static void alloc_cb(uv_handle_t *handle, size_t suggested, uv_buf_t *buf)
 {
@@ -101,26 +113,26 @@ static void read_cb(uv_stream_t *stream, ssize_t cnt, const uv_buf_t *buf)
   uv_tty_t out;
   uv_tty_init(&write_loop, &out, fileno(stdout), 0);
 
-#ifdef _WIN32
-  if (invoke_sigwinch_handler) {
-    int width, height;
-    uv_tty_get_winsize(&out, &width, &height);
-    if (screen_rect.width != width || screen_rect.height != height) {
-      screen_rect.width = width;
-      screen_rect.height = height;
-      // HACK: Invoke directly. See note at Screen:try_resize().
-      sig_handler(SIGWINCH);
-      uv_run(&write_loop, UV_RUN_NOWAIT);
-    }
-  } else {
-#endif
+// #ifdef _WIN32
+//   if (invoke_sigwinch_handler) {
+//     int width, height;
+//     uv_tty_get_winsize(&out, &width, &height);
+//     if (screen_rect.width != width || screen_rect.height != height) {
+//       screen_rect.width = width;
+//       screen_rect.height = height;
+//       // HACK: Invoke directly. See note at Screen:try_resize().
+//       sig_handler(SIGWINCH);
+//       uv_run(&write_loop, UV_RUN_NOWAIT);
+//     }
+//   } else {
+// #endif
     uv_write_t req;
     uv_buf_t b = {.base = buf->base, .len = (size_t)cnt};
     uv_write(&req, STRUCT_CAST(uv_stream_t, &out), &b, 1, NULL);
     uv_run(&write_loop, UV_RUN_DEFAULT);
-#ifdef _WIN32
-  }
-#endif
+// #ifdef _WIN32
+//   }
+// #endif
 
   uv_close(STRUCT_CAST(uv_handle_t, &out), NULL);
   uv_run(&write_loop, UV_RUN_DEFAULT);
@@ -202,9 +214,9 @@ int main(int argc, char **argv)
   sigaction(SIGHUP, &sa, NULL);
   sigaction(SIGWINCH, &sa, NULL);
 #else
-  // uv_signal_t sigwinch_watcher;
-  // uv_signal_init(uv_default_loop(), &sigwinch_watcher);
-  // uv_signal_start(&sigwinch_watcher, sigwinch_cb, SIGWINCH);
+  uv_signal_t sigwinch_watcher;
+  uv_signal_init(uv_default_loop(), &sigwinch_watcher);
+  uv_signal_start(&sigwinch_watcher, sigwinch_cb, SIGWINCH);
 #endif
   uv_run(uv_default_loop(), UV_RUN_DEFAULT);
 

test/functional/terminal/scrollback_spec.lua

@@ -141,7 +141,6 @@ describe('terminal scrollback', function()
     describe('and the height is decreased by 1', function()
       local function will_hide_top_line()
         screen:try_resize(screen._width, screen._height - 1)
-        retry(nil, 100000, function()
         screen:expect([[
           line2                         |
           line3                         |
@@ -150,7 +149,6 @@ describe('terminal scrollback', function()
           {1: }                             |
           {3:-- TERMINAL --}                |
         ]])
-        end)
       end
 
       it('will hide top line', will_hide_top_line)
@@ -162,7 +160,6 @@ describe('terminal scrollback', function()
         end)
 
         it('will hide the top 3 lines', function()
-          retry(nil, 100000, function()
           screen:expect([[
             rows: 5, cols: 30             |
             rows: 3, cols: 30             |
@@ -177,13 +174,15 @@ describe('terminal scrollback', function()
             rows: 3, cols: 30             |
                                           |
           ]])
-          end)
         end)
       end)
     end)
   end)
 
   describe('with empty lines after the cursor', function()
+    -- XXX: Can't test this reliably on Windows unless the cursor is _moved_
+    --      by the resize. http://docs.libuv.org/en/v1.x/signal.html
+    --      See also: https://github.com/rprichard/winpty/issues/110
     if helpers.pending_win32(pending) then return end
 
     describe('and the height is decreased by 2', function()
@@ -250,7 +249,6 @@ describe('terminal scrollback', function()
         {3:-- TERMINAL --}                |
       ]])
       screen:try_resize(screen._width, screen._height - 3)
-      retry(nil, 100000, function()
       screen:expect([[
         line4                         |
         rows: 3, cols: 30             |
@@ -258,10 +256,13 @@ describe('terminal scrollback', function()
         {3:-- TERMINAL --}                |
       ]])
       eq(7, curbuf('line_count'))
-      end)
     end)
 
     describe('and the height is increased by 1', function()
+      -- XXX: Can't test this reliably on Windows unless the cursor is _moved_
+      --      by the resize. http://docs.libuv.org/en/v1.x/signal.html
+      --      See also: https://github.com/rprichard/winpty/issues/110
+      if helpers.pending_win32(pending) then return end
       local function pop_then_push()
         screen:try_resize(screen._width, screen._height + 1)
         screen:expect([[
@@ -310,7 +311,6 @@ describe('terminal scrollback', function()
         it('will pop 3 lines and then push one back', pop3_then_push1)
 
         describe('and then by 4', function()
-          if helpers.pending_win32(pending) then return end
           before_each(function()
             pop3_then_push1()
             feed('Gi')

test/functional/ui/screen.lua

@@ -73,8 +73,6 @@
 
 local helpers = require('test.functional.helpers')(nil)
 local request, run, uimeths = helpers.request, helpers.run, helpers.uimeths
-local iswin, nvim, retry = helpers.iswin, helpers.nvim, helpers.retry
-
 local dedent = helpers.dedent
 
 local Screen = {}
@@ -176,16 +174,6 @@ function Screen:try_resize(columns, rows)
   -- Give ourselves a chance to _handle_resize, which requires using
   -- self.sleep() (for the resize notification) rather than run()
   self:sleep(0.1)
-
-  -- XXX: On Windows we don't bother to handle SIGWINCH.
-  --      CTRL-Q invokes the handler in tty-test.c directly.
-  --      uv_tty_update_virtual_window() _does_ emit SIGWINCH, but:
-  --      "SIGWINCH may not always be delivered in a timely manner; libuv
-  --      will only detect size changes when the cursor is being moved."
-  --      http://docs.libuv.org/en/v1.x/signal.html
-  if iswin() and 0 ~= nvim('eval', "exists('b:terminal_job_id')") then
-    nvim('command', [[call jobsend(b:terminal_job_id, "\<C-Q>")]])
-  end
 end
 
 -- Asserts that `expected` eventually matches the screen state.