test: Add terminal tests

- Modify tty-test to allow easier control over the terminal
- Add a new directory with various terminal tests/specifications
- Remove a pending job/pty test.
- Flush stdout in Screen:snapshot_util() (avoid waiting for the test to finish)
- Replace libuv sigwinch watcher by a sigaction handler. libuv randomly fails to
  deliver signals on OSX. Might be related to the problem fixed by
  @bbcddc55ee1e5605657592644be0102ed3a5f104 (under the hoods, libuv uses a pipe
  to deliver signals to the main thread, which might be blocking in some
  situations)

1 files changed, 138 insertions, 0 deletions

diff --git a/test/functional/terminal/window_split_tab_spec.lua b/test/functional/terminal/window_split_tab_spec.lua
new file mode 100644
index 0000000000..c102b1f133
--- /dev/null
+++ b/test/functional/terminal/window_split_tab_spec.lua
@@ -0,0 +1,138 @@
+local helpers = require('test.functional.helpers')
+local thelpers = require('test.functional.terminal.helpers')
+local clear, eq, curbuf = helpers.clear, helpers.eq, helpers.curbuf
+local feed, nvim = helpers.feed, helpers.nvim
+local feed_data = thelpers.feed_data
+
+describe('terminal', function()
+  local screen
+
+  before_each(function()
+    clear()
+    -- set the statusline to a constant value because of variables like pid
+    -- and current directory and to improve visibility of splits
+    nvim('set_option', 'statusline', '==========')
+    nvim('command', 'highlight StatusLine cterm=NONE')
+    nvim('command', 'highlight StatusLineNC cterm=NONE')
+    nvim('command', 'highlight VertSplit cterm=NONE')
+    screen = thelpers.screen_setup(3)
+  end)
+
+  after_each(function()
+    screen:detach()
+  end)
+
+  describe('when the screen is resized', function()
+    it('will forward a resize request to the program', function()
+      screen:try_resize(screen._width + 3, screen._height + 5)
+      screen:expect([[
+        tty ready                                            |
+        rows: 14, cols: 53                                   |
+        {1: }                                                    |
+                                                             |
+                                                             |
+                                                             |
+                                                             |
+                                                             |
+                                                             |
+                                                             |
+                                                             |
+                                                             |
+                                                             |
+                                                             |
+        -- TERMINAL --                                       |
+      ]])
+      screen:try_resize(screen._width - 6, screen._height - 10)
+      screen:expect([[
+        tty ready                                      |
+        rows: 14, cols: 53                             |
+        rows: 4, cols: 47                              |
+        {1: }                                              |
+        -- TERMINAL --                                 |
+      ]])
+    end)
+  end)
+
+  describe('split horizontally', function()
+    before_each(function()
+      nvim('command', 'sp')
+    end)
+
+    local function reduce_height()
+      screen:expect([[
+        tty ready                                         |
+        rows: 3, cols: 50                                 |
+        {1: }                                                 |
+        ~                                                 |
+        ==========                                        |
+        tty ready                                         |
+        rows: 3, cols: 50                                 |
+        {2: }                                                 |
+        ==========                                        |
+        -- TERMINAL --                                    |
+      ]])
+    end
+
+    it('uses the minimum height of all window displaying it', reduce_height)
+
+    describe('and then vertically', function()
+      before_each(function()
+        reduce_height()
+        nvim('command', 'vsp')
+      end)
+
+      local function reduce_width()
+        screen:expect([[
+          rows: 3, cols: 50        |rows: 3, cols: 50       |
+          rows: 3, cols: 24        |rows: 3, cols: 24       |
+          {1: }                        |{2: }                       |
+          ~                        |~                       |
+          ==========                ==========              |
+          rows: 3, cols: 50                                 |
+          rows: 3, cols: 24                                 |
+          {2: }                                                 |
+          ==========                                        |
+          -- TERMINAL --                                    |
+        ]])
+        feed('<c-\\><c-n>gg')
+        screen:expect([[
+          ^tty ready                |rows: 3, cols: 50       |
+          rows: 3, cols: 50        |rows: 3, cols: 24       |
+          rows: 3, cols: 24        |{2: }                       |
+          {2: }                        |~                       |
+          ==========                ==========              |
+          rows: 3, cols: 50                                 |
+          rows: 3, cols: 24                                 |
+          {2: }                                                 |
+          ==========                                        |
+                                                            |
+        ]])
+      end
+
+      it('uses the minimum width of all window displaying it', reduce_width)
+
+      describe('and then closes one of the vertical splits with q:', function()
+        before_each(function()
+          reduce_width()
+          nvim('command', 'q')
+          feed('<c-w>ja')
+        end)
+
+        it('will restore the width', function()
+          screen:expect([[
+            rows: 3, cols: 24                                 |
+            rows: 3, cols: 50                                 |
+            {2: }                                                 |
+            ~                                                 |
+            ==========                                        |
+            rows: 3, cols: 24                                 |
+            rows: 3, cols: 50                                 |
+            {1: }                                                 |
+            ==========                                        |
+            -- TERMINAL --                                    |
+          ]])
+        end)
+      end)
+    end)
+  end)
+end)