test: cleanup

test/functional/fixtures/tty-test.c

@@ -4,10 +4,11 @@
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
-
 #include <uv.h>
 #ifdef _WIN32
-#include <windows.h>
+# include <windows.h>
+#else
+# include <unistd.h>
 #endif
 
 // -V:STRUCT_CAST:641
@@ -15,39 +16,31 @@
 #define is_terminal(stream) (uv_guess_handle(fileno(stream)) == UV_TTY)
 #define BUF_SIZE 0xfff
 #define CTRL_C 0x03
-#ifdef _WIN32
 #define CTRL_Q 0x11
-#endif
+
+uv_tty_t tty;
 
 #ifdef _WIN32
 typedef struct screen_size {
   int width;
   int height;
 } ScreenSize;
-#endif
-
-uv_tty_t tty;
-#ifdef _WIN32
 ScreenSize screen_rect;
 #endif
 
-#ifdef _WIN32
 bool owns_tty(void)
 {
+#ifdef _WIN32
   // XXX: We need to make proper detect owns tty
   // HWND consoleWnd = GetConsoleWindow();
   // DWORD dwProcessId;
   // GetWindowThreadProcessId(consoleWnd, &dwProcessId);
   // return GetCurrentProcessId() == dwProcessId;
   return true;
-}
 #else
-#include <unistd.h>
-bool owns_tty(void)
-{
   return getsid(0) == getpid();
-}
 #endif
+}
 
 static void walk_cb(uv_handle_t *handle, void *arg)
 {
@@ -56,7 +49,6 @@ static void walk_cb(uv_handle_t *handle, void *arg)
   }
 }
 
-#ifndef WIN32
 static void sig_handler(int signum)
 {
   switch (signum) {
@@ -73,17 +65,6 @@ 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)
 {
@@ -100,9 +81,9 @@ static void read_cb(uv_stream_t *stream, ssize_t cnt, const uv_buf_t *buf)
 
   int *interrupted = stream->data;
 #ifdef _WIN32
-  bool prsz = false;
-  int width;
-  int height;
+  // HACK: Special-case to avoid relying on SIGWINCH on Windows.
+  //       See note at Screen:try_resize().
+  bool invoke_sigwinch_handler = false;
 #endif
 
   for (int i = 0; i < cnt; i++) {
@@ -110,7 +91,7 @@ static void read_cb(uv_stream_t *stream, ssize_t cnt, const uv_buf_t *buf)
       (*interrupted)++;
 #ifdef _WIN32
     } else if (buf->base[i] == CTRL_Q) {
-      prsz = true;
+      invoke_sigwinch_handler = true;
 #endif
     }
   }
@@ -121,12 +102,15 @@ static void read_cb(uv_stream_t *stream, ssize_t cnt, const uv_buf_t *buf)
   uv_tty_init(&write_loop, &out, fileno(stdout), 0);
 
 #ifdef _WIN32
-  if (prsz) {
+  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;
-      fprintf(stderr, "rows: %d, cols: %d\n", height, width);
+      // HACK: Invoke directly. See note at Screen:try_resize().
+      sig_handler(SIGWINCH);
+      uv_run(&write_loop, UV_RUN_NOWAIT);
     }
   } else {
 #endif

test/functional/terminal/scrollback_spec.lua

@@ -141,7 +141,8 @@ 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)
-        screen:expect_after_resize([[
+        retry(nil, 100000, function()
+        screen:expect([[
           line2                         |
           line3                         |
           line4                         |
@@ -149,6 +150,7 @@ describe('terminal scrollback', function()
           {1: }                             |
           {3:-- TERMINAL --}                |
         ]])
+        end)
       end
 
       it('will hide top line', will_hide_top_line)
@@ -160,7 +162,8 @@ describe('terminal scrollback', function()
         end)
 
         it('will hide the top 3 lines', function()
-          screen:expect_after_resize([[
+          retry(nil, 100000, function()
+          screen:expect([[
             rows: 5, cols: 30             |
             rows: 3, cols: 30             |
             {1: }                             |
@@ -174,19 +177,21 @@ describe('terminal scrollback', function()
             rows: 3, cols: 30             |
                                           |
           ]])
+          end)
         end)
       end)
     end)
   end)
 
   describe('with empty lines after the cursor', function()
+    if helpers.pending_win32(pending) then return end
+
     describe('and the height is decreased by 2', function()
       before_each(function()
         screen:try_resize(screen._width, screen._height - 2)
       end)
 
       local function will_delete_last_two_lines()
-        if helpers.pending_win32(pending) then return end
         screen:expect([[
           tty ready                     |
           rows: 4, cols: 30             |
@@ -200,7 +205,6 @@ describe('terminal scrollback', function()
       it('will delete the last two empty lines', will_delete_last_two_lines)
 
       describe('and then decreased by 1', function()
-        if helpers.pending_win32(pending) then return end
         before_each(function()
           will_delete_last_two_lines()
           screen:try_resize(screen._width, screen._height - 1)
@@ -246,19 +250,21 @@ describe('terminal scrollback', function()
         {3:-- TERMINAL --}                |
       ]])
       screen:try_resize(screen._width, screen._height - 3)
-      screen:expect_after_resize([[
+      retry(nil, 100000, function()
+      screen:expect([[
         line4                         |
         rows: 3, cols: 30             |
         {1: }                             |
         {3:-- TERMINAL --}                |
       ]])
       eq(7, curbuf('line_count'))
+      end)
     end)
 
     describe('and the height is increased by 1', function()
       local function pop_then_push()
         screen:try_resize(screen._width, screen._height + 1)
-        screen:expect_after_resize([[
+        screen:expect([[
           line4                         |
           rows: 3, cols: 30             |
           rows: 4, cols: 30             |
@@ -277,7 +283,7 @@ describe('terminal scrollback', function()
         end)
 
         local function pop3_then_push1()
-          screen:expect_after_resize([[
+          screen:expect([[
             line2                         |
             line3                         |
             line4                         |

test/functional/ui/screen.lua

@@ -176,6 +176,16 @@ 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.
@@ -261,17 +271,6 @@ screen:redraw_debug() to show all intermediate screen states.  ]])
   end)
 end
 
-function Screen:expect_after_resize(expected)
-  if iswin() then
-    retry(nil, nil, function()
-      nvim('command', 'call jobsend(b:terminal_job_id, "\\<C-q>")')
-      self:expect(expected)
-    end)
-  else
-    self:expect(expected)
-  end
-end
-
 function Screen:wait(check, timeout)
   local err, checked = false
   local success_seen = false