1 files changed, 88 insertions, 0 deletions
diff --git a/test/functional/legacy/packadd_spec.lua b/test/functional/legacy/packadd_spec.lua
new file mode 100644
index 0000000000..94b5336b9f
--- /dev/null
+++ b/test/functional/legacy/packadd_spec.lua
@@ -0,0 +1,88 @@
+-- Tests for 'packpath' and :packadd
+
+local helpers = require('test.functional.helpers')(after_each)
+local clear, source = helpers.clear, helpers.source
+local call, eq, nvim = helpers.call, helpers.eq, helpers.meths
+
+local function expected_empty()
+  eq({}, nvim.get_vvar('errors'))
+end
+
+describe('packadd', function()
+  before_each(function()
+    clear()
+
+    source([=[
+      func SetUp()
+        let s:topdir = expand('%:p:h') . '/Xdir'
+        exe 'set packpath=' . s:topdir
+        let s:plugdir = s:topdir . '/pack/mine/opt/mytest'
+      endfunc
+
+      func TearDown()
+        call delete(s:topdir, 'rf')
+      endfunc
+
+      func Test_packadd()
+        call mkdir(s:plugdir . '/plugin', 'p')
+        call mkdir(s:plugdir . '/ftdetect', 'p')
+        set rtp&
+        let rtp = &rtp
+        filetype on
+
+        exe 'split ' . s:plugdir . '/plugin/test.vim'
+        call setline(1, 'let g:plugin_works = 42')
+        wq
+
+        exe 'split ' . s:plugdir . '/ftdetect/test.vim'
+        call setline(1, 'let g:ftdetect_works = 17')
+        wq
+
+        packadd mytest
+
+        call assert_true(42, g:plugin_works)
+        call assert_true(17, g:ftdetect_works)
+        call assert_true(len(&rtp) > len(rtp))
+        call assert_true(&rtp =~ (s:plugdir . '\($\|,\)'))
+      endfunc
+
+      func Test_packadd_noload()
+        call mkdir(s:plugdir . '/plugin', 'p')
+        call mkdir(s:plugdir . '/syntax', 'p')
+        set rtp&
+        let rtp = &rtp
+
+        exe 'split ' . s:plugdir . '/plugin/test.vim'
+        call setline(1, 'let g:plugin_works = 42')
+        wq
+        let g:plugin_works = 0
+
+        packadd! mytest
+
+        call assert_true(len(&rtp) > len(rtp))
+        call assert_true(&rtp =~ (s:plugdir . '\($\|,\)'))
+        call assert_equal(0, g:plugin_works)
+
+        " check the path is not added twice
+        let new_rtp = &rtp
+        packadd! mytest
+        call assert_equal(new_rtp, &rtp)
+      endfunc
+    ]=])
+    call('SetUp')
+  end)
+
+  after_each(function()
+    call('TearDown')
+  end)
+
+  it('is working', function()
+    call('Test_packadd')
+    expected_empty()
+  end)
+
+  it('works with packadd!', function()
+    call('Test_packadd_noload')
+    expected_empty()
+  end)
+end)