From fd6df7481a88006fd60bc8980b4db1000ddeda27 Mon Sep 17 00:00:00 2001
From: Gregory Anders <8965202+gpanders@users.noreply.github.com>
Date: Mon, 22 Nov 2021 09:22:08 -0700
Subject: fix(diagnostic): resolve buffer number in get() (#16407)

---
 test/functional/lua/diagnostic_spec.lua | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'test/functional/lua')

diff --git a/test/functional/lua/diagnostic_spec.lua b/test/functional/lua/diagnostic_spec.lua
index 05745a5099..aacb8cf3ae 100644
--- a/test/functional/lua/diagnostic_spec.lua
+++ b/test/functional/lua/diagnostic_spec.lua
@@ -128,6 +128,17 @@ describe('vim.diagnostic', function()
     eq('Diagnostic #1', result[1].message)
   end)
 
+  it('resolves buffer number 0 to the current buffer', function()
+    eq(2, exec_lua [[
+      vim.api.nvim_set_current_buf(diagnostic_bufnr)
+      vim.diagnostic.set(diagnostic_ns, diagnostic_bufnr, {
+        make_error('Diagnostic #1', 1, 1, 1, 1),
+        make_error('Diagnostic #2', 2, 1, 2, 1),
+      })
+      return #vim.diagnostic.get(0)
+    ]])
+  end)
+
   it('saves and count a single error', function()
     eq(1, exec_lua [[
       vim.diagnostic.set(diagnostic_ns, diagnostic_bufnr, {
-- 
cgit