1 files changed, 113 insertions, 0 deletions
diff --git a/test/functional/autocmd/dirchanged_spec.lua b/test/functional/autocmd/dirchanged_spec.lua
new file mode 100644
index 0000000000..15196dbd44
--- /dev/null
+++ b/test/functional/autocmd/dirchanged_spec.lua
@@ -0,0 +1,113 @@
+local lfs = require('lfs')
+local h = require('test.functional.helpers')(after_each)
+
+local clear = h.clear
+local command = h.command
+local eq = h.eq
+local eval = h.eval
+local request = h.request
+
+describe('autocmd DirChanged', function()
+  local curdir = string.gsub(lfs.currentdir(), '\\', '/')
+  local dirs = {
+    curdir .. '/Xtest-functional-autocmd-dirchanged.dir1',
+    curdir .. '/Xtest-functional-autocmd-dirchanged.dir2',
+    curdir .. '/Xtest-functional-autocmd-dirchanged.dir3',
+  }
+
+  setup(function()    for _, dir in pairs(dirs) do h.mkdir(dir) end end)
+  teardown(function() for _, dir in pairs(dirs) do h.rmdir(dir) end end)
+
+  before_each(function()
+    clear()
+    command('autocmd DirChanged * let [g:event, g:scope, g:cdcount] = [copy(v:event), expand("<amatch>"), 1 + get(g:, "cdcount", 0)]')
+  end)
+
+  it('sets v:event', function()
+    command('lcd '..dirs[1])
+    eq({cwd=dirs[1], scope='window'}, eval('g:event'))
+    eq(1, eval('g:cdcount'))
+
+    command('tcd '..dirs[2])
+    eq({cwd=dirs[2], scope='tab'}, eval('g:event'))
+    eq(2, eval('g:cdcount'))
+
+    command('cd '..dirs[3])
+    eq({cwd=dirs[3], scope='global'}, eval('g:event'))
+    eq(3, eval('g:cdcount'))
+  end)
+
+  it('disallows recursion', function()
+    command('set shellslash')
+    -- Set up a _nested_ handler.
+    command('autocmd DirChanged * nested lcd '..dirs[3])
+    command('lcd '..dirs[1])
+    eq({cwd=dirs[1], scope='window'}, eval('g:event'))
+    eq(1, eval('g:cdcount'))
+    -- autocmd changed to dirs[3], but did NOT trigger another DirChanged.
+    eq(dirs[3], eval('getcwd()'))
+  end)
+
+  it('sets <amatch> to CWD "scope"', function()
+    command('lcd '..dirs[1])
+    eq('window', eval('g:scope'))
+
+    command('tcd '..dirs[2])
+    eq('tab', eval('g:scope'))
+
+    command('cd '..dirs[3])
+    eq('global', eval('g:scope'))
+  end)
+
+  it('does not trigger if :cd fails', function()
+    command('let g:event = {}')
+
+    local status1, err1 = pcall(function()
+      command('lcd '..dirs[1] .. '/doesnotexist')
+    end)
+    eq({}, eval('g:event'))
+
+    local status2, err2 = pcall(function()
+      command('lcd '..dirs[2] .. '/doesnotexist')
+    end)
+    eq({}, eval('g:event'))
+
+    local status3, err3 = pcall(function()
+      command('lcd '..dirs[3] .. '/doesnotexist')
+    end)
+    eq({}, eval('g:event'))
+
+    eq(false, status1)
+    eq(false, status2)
+    eq(false, status3)
+
+    eq('E344:', string.match(err1, "E%d*:"))
+    eq('E344:', string.match(err2, "E%d*:"))
+    eq('E344:', string.match(err3, "E%d*:"))
+  end)
+
+  it("is triggered by 'autochdir'", function()
+    command('set autochdir')
+
+    command('split '..dirs[1]..'/foo')
+    eq({cwd=dirs[1], scope='window'}, eval('g:event'))
+
+    command('split '..dirs[2]..'/bar')
+    eq({cwd=dirs[2], scope='window'}, eval('g:event'))
+  end)
+
+  it('is triggered by nvim_set_current_dir()', function()
+    request('nvim_set_current_dir', dirs[1])
+    eq({cwd=dirs[1], scope='global'}, eval('g:event'))
+
+    request('nvim_set_current_dir', dirs[2])
+    eq({cwd=dirs[2], scope='global'}, eval('g:event'))
+
+    local status, err = pcall(function()
+      request('nvim_set_current_dir', '/doesnotexist')
+    end)
+    eq(false, status)
+    eq('Failed to change directory', string.match(err, ': (.*)'))
+    eq({cwd=dirs[2], scope='global'}, eval('g:event'))
+  end)
+end)