Merge pull request #13117 from romgrk/add-scroll-events

Implement scroll autocommand

1 files changed, 62 insertions, 0 deletions

diff --git a/test/functional/autocmd/winscrolled_spec.lua b/test/functional/autocmd/winscrolled_spec.lua
new file mode 100644
index 0000000000..1ef5a37479
--- /dev/null
+++ b/test/functional/autocmd/winscrolled_spec.lua
@@ -0,0 +1,62 @@
+local helpers = require('test.functional.helpers')(after_each)
+
+local clear = helpers.clear
+local eq = helpers.eq
+local eval = helpers.eval
+local source = helpers.source
+
+describe('WinScrolled', function()
+  before_each(clear)
+
+  it('is triggered by scrolling vertically', function()
+    source([[
+    set nowrap
+    let width = winwidth(0)
+    let line = '123' . repeat('*', width * 2)
+    let lines = [line, line]
+    call nvim_buf_set_lines(0, 0, -1, v:true, lines)
+
+    let g:scrolled = 0
+    autocmd WinScrolled * let g:scrolled += 1
+    execute "normal! \<C-e>"
+    ]])
+    eq(1, eval('g:scrolled'))
+  end)
+
+  it('is triggered by scrolling horizontally', function()
+    source([[
+    set nowrap
+    let width = winwidth(0)
+    let line = '123' . repeat('*', width * 2)
+    let lines = [line, line]
+    call nvim_buf_set_lines(0, 0, -1, v:true, lines)
+
+    let g:scrolled = 0
+    autocmd WinScrolled * let g:scrolled += 1
+    execute "normal! zl"
+    ]])
+    eq(1, eval('g:scrolled'))
+  end)
+
+  it('is triggered when the window scrolls in insert mode', function()
+    source([[
+    let height = winheight(0)
+    let lines = map(range(height * 2), {_, i -> string(i)})
+    call nvim_buf_set_lines(0, 0, -1, v:true, lines)
+
+    let g:scrolled = 0
+    autocmd WinScrolled * let g:scrolled += 1
+    call feedkeys("LA\<CR><Esc>", "n")
+    ]])
+    eq(2, eval('g:scrolled'))
+  end)
+
+  it('is triggered when the window is resized', function()
+    source([[
+    let g:scrolled = 0
+    autocmd WinScrolled * let g:scrolled += 1
+    wincmd v
+    ]])
+    eq(1, eval('g:scrolled'))
+  end)
+end)