eval: add v:event, which will contain data events want to propagate to their receivers.

Add helper functions dict_clear and dict_set_keys_readonly.

1 files changed, 15 insertions, 0 deletions

diff --git a/test/functional/eval/vvar_event_spec.lua b/test/functional/eval/vvar_event_spec.lua
new file mode 100644
index 0000000000..bbac86524f
--- /dev/null
+++ b/test/functional/eval/vvar_event_spec.lua
@@ -0,0 +1,15 @@
+local helpers = require('test.functional.helpers')
+local clear, eval, eq = helpers.clear, helpers.eval, helpers.eq
+local command = helpers.command
+describe('v:event', function()
+  before_each(clear)
+  it('is empty before any autocommand', function()
+    eq({}, eval('v:event'))
+  end)
+
+  it('is immutable', function()
+    eq(false, pcall(command, 'let v:event = {}'))
+    eq(false, pcall(command, 'let v:event.mykey = {}'))
+  end)
+end)
+