test(log): use tempfile for expected error logs #33017

1 files changed, 46 insertions, 43 deletions

diff --git a/test/functional/ui/decorations_spec.lua b/test/functional/ui/decorations_spec.lua
index ccc7841856..639d43b560 100644
--- a/test/functional/ui/decorations_spec.lua
+++ b/test/functional/ui/decorations_spec.lua
@@ -15,6 +15,26 @@ local eq = t.eq
 local assert_alive = n.assert_alive
 local pcall_err = t.pcall_err
 
+--- @return integer
+local function setup_provider(code)
+  return exec_lua ([[
+    local api = vim.api
+    _G.ns1 = api.nvim_create_namespace "ns1"
+  ]] .. (code or [[
+    beamtrace = {}
+    local function on_do(kind, ...)
+      table.insert(beamtrace, {kind, ...})
+    end
+  ]]) .. [[
+    api.nvim_set_decoration_provider(_G.ns1, {
+      on_start = on_do; on_buf = on_do;
+      on_win = on_do; on_line = on_do;
+      on_end = on_do; _on_spell_nav = on_do;
+    })
+    return _G.ns1
+  ]])
+end
+
 describe('decorations providers', function()
   local screen ---@type test.functional.ui.screen
   before_each(function()
@@ -52,26 +72,6 @@ describe('decorations providers', function()
     posp = getmark(mark, false);
     restore_buffer(&save_buf); ]]
 
-  --- @return integer
-  local function setup_provider(code)
-    return exec_lua ([[
-      local api = vim.api
-      _G.ns1 = api.nvim_create_namespace "ns1"
-    ]] .. (code or [[
-      beamtrace = {}
-      local function on_do(kind, ...)
-        table.insert(beamtrace, {kind, ...})
-      end
-    ]]) .. [[
-      api.nvim_set_decoration_provider(_G.ns1, {
-        on_start = on_do; on_buf = on_do;
-        on_win = on_do; on_line = on_do;
-        on_end = on_do; _on_spell_nav = on_do;
-      })
-      return _G.ns1
-    ]])
-  end
-
   local function check_trace(expected)
     local actual = exec_lua [[ local b = beamtrace beamtrace = {} return b ]]
     expect_events(expected, actual, "beam trace")
@@ -758,28 +758,6 @@ describe('decorations providers', function()
     ]])
   end)
 
-  it('errors gracefully', function()
-    screen:try_resize(65, screen._height)
-    insert(mulholland)
-
-    setup_provider [[
-    function on_do(...)
-      error "Foo"
-    end
-    ]]
-
-    screen:expect([[
-      // just to see if there was an accident                          |
-      {8:                                                                 }|
-      {2:Error in decoration provider "start" (ns=ns1):}                   |
-      {2:Error executing lua: [string "<nvim>"]:4: Foo}                    |
-      {2:stack traceback:}                                                 |
-      {2:        [C]: in function 'error'}                                 |
-      {2:        [string "<nvim>"]:4: in function <[string "<nvim>"]:3>}   |
-      {18:Press ENTER or type command to continue}^                          |
-    ]])
-  end)
-
   it('can add new providers during redraw #26652', function()
     setup_provider [[
     local ns = api.nvim_create_namespace('test_no_add')
@@ -835,6 +813,32 @@ describe('decorations providers', function()
   end)
 end)
 
+describe('decoration_providers', function()
+  it('errors and logs gracefully', function()
+    local testlog = 'Xtest_decorations_log'
+    clear({ env = { NVIM_LOG_FILE = testlog } })
+    local screen = Screen.new(65, 7)
+    setup_provider([[
+      function on_do(...)
+        error "Foo"
+      end
+    ]])
+    screen:expect([[
+      {3:                                                                 }|
+      {9:Error in decoration provider "start" (ns=ns1):}                   |
+      {9:Error executing lua: [string "<nvim>"]:4: Foo}                    |
+      {9:stack traceback:}                                                 |
+      {9:        [C]: in function 'error'}                                 |
+      {9:        [string "<nvim>"]:4: in function <[string "<nvim>"]:3>}   |
+      {6:Press ENTER or type command to continue}^                          |
+    ]])
+    t.assert_log('Error in decoration provider "start" %(ns=ns1%):', testlog, 100)
+    t.assert_log('Error executing lua: %[string "<nvim>"%]:4: Foo', testlog, 100)
+    n.check_close()
+    os.remove(testlog)
+  end)
+end)
+
 local example_text = [[
 for _,item in ipairs(items) do
     local text, hl_id_cell, count = unpack(item)
@@ -6834,4 +6838,3 @@ describe('decorations: window scoped', function()
     eq({ wins = {} }, api.nvim__ns_get(ns))
   end)
 end)
-