(defun go-func-name-at-point ()

(interactive)

(save-excursion

(end-of-line)

(beginning-of-defun)

(when (re-search-forward “^func[[:space:]]+\\([[:alnum:]_]+\\)” nil t)

(match-string 1))))

​

(setq treesit-go-tests-query

(treesit-query-compile

'go

'((function_declaration

name: (identifier) u/testname

parameters: (parameter_list :anchor (parameter_declaration type: (pointer_type) u/type :anchor))

(:match “*testing.\\(T\\|M\\)” u/type) (:match “^Test.+$” u/testname)) u/parent)))

(defun vmacs-query-go-test-nodes ()

(when (treesit-ready-p 'go)

(treesit-query-capture (treesit-buffer-root-node) treesit-go-tests-query)))

(defvar vmacs-go-tests-hist nil)

(defun vmacs-completing-read-go-tests ()

(let* ((test-matches (vmacs-query-go-test-nodes))

(test-name-matches (cl-remove-if-not (lambda (match) (eq (car match) 'testname)) test-matches))

(test-names (mapcar (lambda (match) (treesit-node-text (cdr match))) test-name-matches)))

(completing-read “Test:” test-names nil t nil vmacs-go-tests-hist (go-func-name-at-point))))

​

​

(defun vmacs-dape–select-go-args ()

(if (string-suffix-p “_test.go” (buffer-name))

(when-let* ((test-name (vmacs-completing-read-go-tests))

(test-regexp (concat “^” test-name “$”)))

(if test-name

`[“-test.run” ,test-regexp]

(error “No test selected”)))

(if current-prefix-arg

(vconcat (split-string (read-shell-command "args: " nil

(if (equal (car compile-history) “”)

'(compile-history . 1)

'compile-history))))

[])))

​

;; https://github.com/go-delve/delve/blob/master/Documentation/usage/dlv_dap.md

(defun vmacs-dape-test-p ()

(if (string-suffix-p “_test.go” (buffer-name))

“test” “debug”))

​

(defun vmacs-dape-relative-dir ()

“Return the file directory relative to dape’s cwd. This is used by Delve debugger.”

(if (string-suffix-p “_test.go” (buffer-name))

(concat “./” (file-relative-name

default-directory (funcall dape-cwd-fn)))

(funcall dape-cwd-fn)))

​

;; inside your dape-config

(add-to-list 'dape-configs

`(delve

modes (go-mode go-ts-mode)

command “dlv”

command-cwd dape-cwd-fn

command-args (“dap” “–listen” “127.0.0.1:55878”)

host “127.0.0.1”

port 55878

:type “go”

:name “go-debug”

:request “launch”

:mode vmacs-dape-test-p

:cwd dape-cwd-fn

:program vmacs-dape-relative-dir

:args vmacs-dape–select-go-args))