Run tests and add diag on startup (when opening a folder with go.mod)

lua/myworkflow/autocommands.lua

@@ -15,7 +15,24 @@ vim.api.nvim_create_autocmd('BufWritePost',
         pattern = { "*.go" },
         callback = function()
             gotests.goRunTests()
-            gotests.goSetMarks()
+            gotests.goSetAllMarks()
         end
     }
 )
+
+vim.api.nvim_create_autocmd('VimEnter', {
+    pattern = { "*" },
+    group = atgroup,
+    nested = true,
+    callback = function()
+        -- we have to defer the autocommand, because otherwise treesitter
+        -- will not highlight syntax (all code is plain white)
+        vim.defer_fn(function()
+            local gomod_exists = vim.fn.filereadable("go.mod")
+            if gomod_exists ~= 0 then
+                gotests.goRunTests()
+                gotests.goSetAllMarks()
+            end
+        end, 500)
+    end
+})

lua/myworkflow/go-tests.lua

@@ -49,11 +49,11 @@ vim.api.nvim_create_user_command('GoTest', function()
 end, {})
 
 vim.api.nvim_create_user_command('GoPrintResults', function()
-    M.goPrintResults()
+    print(vim.inspect(M.results))
 end, {})
 
 vim.api.nvim_create_user_command('GoSetTestMarks', function()
-    M.goSetMarks()
+    M.goSetAllMarks()
 end, {})
 
 vim.api.nvim_create_user_command('GoClearResults', function()
@@ -97,13 +97,26 @@ function M.goRunTests()
     vim.fn.jobwait({ id })
 end
 
-function M.goPrintResults()
-    print(vim.inspect(M.results))
+function M.goSetAllMarks()
+    local files = vim.fn.system({ "find", "-type", "f", "-name", "*.go" })
+
+    local sep = "\n"
+    local filetable = {}
+    for str in string.gmatch(files, "([^" .. sep .. "]+)") do
+        table.insert(filetable, str)
     end
 
-function M.goSetMarks()
-    local currbuf = vim.api.nvim_get_current_buf()
+    for _, file in ipairs(filetable) do
+        vim.fn.bufadd(file)
+        vim.fn.bufload(file)
+        local bufno = vim.fn.bufnr(file)
+        M.goSetMarks(bufno)
+    end
+end
+
+function M.goSetMarks(currbuf)
     vim.api.nvim_buf_clear_namespace(currbuf, ns, 0, -1)
+    vim.diagnostic.set(ns, currbuf, {}, {})
     local text = {}
     local failed = {}