feat(diagnostic): add support for tags

The LSP spec supports two tags that can be added to diagnostics:
unnecessary and deprecated. Extend vim.diagnostic to be able to handle
these.

2 files changed, 3 insertions, 3 deletions

diff --git a/test/functional/lua/diagnostic_spec.lua b/test/functional/lua/diagnostic_spec.lua
index d364986ad7..7b4d68c9cd 100644
--- a/test/functional/lua/diagnostic_spec.lua
+++ b/test/functional/lua/diagnostic_spec.lua
@@ -86,6 +86,7 @@ describe('vim.diagnostic', function()
   it('creates highlight groups', function()
     command('runtime plugin/diagnostic.vim')
     eq({
+      'DiagnosticDeprecated',
       'DiagnosticError',
       'DiagnosticFloatingError',
       'DiagnosticFloatingHint',
@@ -105,6 +106,7 @@ describe('vim.diagnostic', function()
       'DiagnosticUnderlineInfo',
       'DiagnosticUnderlineOk',
       'DiagnosticUnderlineWarn',
+      'DiagnosticUnnecessary',
       'DiagnosticVirtualTextError',
       'DiagnosticVirtualTextHint',
       'DiagnosticVirtualTextInfo',
diff --git a/test/functional/plugin/lsp/diagnostic_spec.lua b/test/functional/plugin/lsp/diagnostic_spec.lua
index f73ffc29b0..f58016bf01 100644
--- a/test/functional/plugin/lsp/diagnostic_spec.lua
+++ b/test/functional/plugin/lsp/diagnostic_spec.lua
@@ -97,7 +97,6 @@ describe('vim.lsp.diagnostic', function()
         }
 
         diagnostics[1].code = 42
-        diagnostics[1].tags = {"foo", "bar"}
         diagnostics[1].data = "Hello world"
 
         vim.lsp.diagnostic.on_publish_diagnostics(nil, {
@@ -110,10 +109,9 @@ describe('vim.lsp.diagnostic', function()
           vim.lsp.diagnostic.get_line_diagnostics(diagnostic_bufnr, 1)[1],
         }
       ]]
-      eq({code = 42, tags = {"foo", "bar"}, data = "Hello world"}, result[1].user_data.lsp)
+      eq({code = 42, data = "Hello world"}, result[1].user_data.lsp)
       eq(42, result[1].code)
       eq(42, result[2].code)
-      eq({"foo", "bar"}, result[2].tags)
       eq("Hello world", result[2].data)
     end)
   end)