vim-patch:8.2.2778: problem restoring 'packpath' in session

Problem:    Problem restoring 'packpath' in session.
Solution:   Let "skiprtp" also apply to 'packpath'.
https://github.com/vim/vim/commit/d23b714d8b9ed8e16ef553098acc6da0979e94fc

Port Test_mksession_skiprtp() to lua functional test.

1 files changed, 42 insertions, 0 deletions

diff --git a/test/functional/legacy/mksession_spec.lua b/test/functional/legacy/mksession_spec.lua
new file mode 100644
index 0000000000..a2af891107
--- /dev/null
+++ b/test/functional/legacy/mksession_spec.lua
@@ -0,0 +1,42 @@
+local helpers = require('test.functional.helpers')(after_each)
+local clear = helpers.clear
+local command = helpers.command
+local funcs = helpers.funcs
+local eq = helpers.eq
+
+describe('mksession', function()
+  before_each(clear)
+
+  after_each(function()
+    os.remove('Xtest_mks.out')
+  end)
+
+  it('supports "skiprtp" value', function()
+    command('set sessionoptions&vi')
+    command('set rtp+=$HOME')
+    command('set pp+=$HOME')
+    command('mksession! Xtest_mks.out')
+    local found_rtp = 0
+    local found_pp = 0
+    for _, line in pairs(funcs.readfile('Xtest_mks.out', 'b')) do
+      if line:find('set runtimepath') then
+        found_rtp = found_rtp + 1
+      end
+      if line:find('set packpath') then
+        found_pp = found_pp + 1
+      end
+    end
+    eq(1, found_rtp)
+    eq(1, found_pp)
+
+    command('set sessionoptions+=skiprtp')
+    command('mksession! Xtest_mks.out')
+    local found_rtp_or_pp = 0
+    for _, line in pairs(funcs.readfile('Xtest_mks.out', 'b')) do
+      if line:find('set runtimepath') or line:find('set packpath') then
+        found_rtp_or_pp = found_rtp_or_pp + 1
+      end
+    end
+    eq(0, found_rtp_or_pp)
+  end)
+end)