feat(runners): add ability to pass in function as args

lua/neotest-golang/lib/cmd.lua

@@ -37,7 +37,11 @@ end
 
 function M.golist_command()
   local cmd = { "go", "list", "-json" }
-  vim.list_extend(cmd, options.get().go_list_args or {})
+  local go_list_args = options.get().go_list_args
+  if type(go_list_args) == "function" then
+    go_list_args = go_list_args()
+  end
+  vim.list_extend(cmd, go_list_args or {})
   vim.list_extend(cmd, { "./..." })
   return cmd
 end
@@ -81,16 +85,28 @@ end
 
 function M.go_test(go_test_required_args)
   local cmd = { "go", "test", "-json" }
-  cmd = vim.list_extend(vim.deepcopy(cmd), options.get().go_test_args)
+  local args = options.get().go_test_args
+  if type(args) == "function" then
+    args = args()
+  end
+  cmd = vim.list_extend(vim.deepcopy(cmd), args)
   cmd = vim.list_extend(vim.deepcopy(cmd), go_test_required_args)
   return cmd
 end
 
 function M.gotestsum(go_test_required_args, json_filepath)
   local cmd = { "gotestsum", "--jsonfile=" .. json_filepath }
-  cmd = vim.list_extend(vim.deepcopy(cmd), options.get().gotestsum_args)
+  local gotestsum_args = options.get().gotestsum_args
+  if type(gotestsum_args) == "function" then
+    gotestsum_args = gotestsum_args()
+  end
+  local go_test_args = options.get().go_test_args
+  if type(go_test_args) == "function" then
+    go_test_args = go_test_args()
+  end
+  cmd = vim.list_extend(vim.deepcopy(cmd), gotestsum_args)
   cmd = vim.list_extend(vim.deepcopy(cmd), { "--" })
-  cmd = vim.list_extend(vim.deepcopy(cmd), options.get().go_test_args)
+  cmd = vim.list_extend(vim.deepcopy(cmd), go_test_args)
   cmd = vim.list_extend(vim.deepcopy(cmd), go_test_required_args)
   return cmd
 end

lua/neotest-golang/options.lua

@@ -7,16 +7,16 @@ local logger = require("neotest-golang.logging")
 local M = {}
 
 local opts = {
-  go_test_args = { "-v", "-race", "-count=1" },
-  go_list_args = {},
+  go_test_args = { "-v", "-race", "-count=1" }, -- NOTE: can also be a function
+  go_list_args = {}, -- NOTE: can also be a function
   dap_go_opts = {},
   testify_enabled = false,
   warn_test_name_dupes = true,
   warn_test_not_executed = true,
 
   -- experimental, for now undocumented, options
   runner = "go", -- or "gotestsum"
-  gotestsum_args = { "--format=standard-verbose" },
+  gotestsum_args = { "--format=standard-verbose" }, -- NOTE: can also be a function
   dev_notifications = false,
 }
 

tests/unit/options_spec.lua

@@ -46,4 +46,33 @@ describe("Options are set up", function()
     options.setup(expected_options)
     assert.are_same(expected_options, options.get())
   end)
+
+  it("With args as functions", function()
+    local expected_options = {
+      go_test_args = function()
+        return {
+          "-v",
+          "-race",
+          "-count=1",
+          "-parallel=1",
+        }
+      end,
+      go_list_args = function()
+        return {}
+      end,
+      dap_go_opts = {},
+      testify_enabled = false,
+      warn_test_name_dupes = true,
+      warn_test_not_executed = true,
+
+      -- experimental
+      runner = "go",
+      gotestsum_args = function()
+        return { "--format=standard-verbose" }
+      end,
+      dev_notifications = false,
+    }
+    options.setup(expected_options)
+    assert.are_same(expected_options, options.get())
+  end)
 end)