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eglot-tests.el
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eglot-tests.el
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;;; eglot-tests.el --- Tests for eglot.el -*- lexical-binding: t; -*-
;; Copyright (C) 2018-2022 Free Software Foundation, Inc.
;; Author: João Távora <joaotavora@gmail.com>
;; Keywords: tests
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Tests for eglot.el
;;; Code:
(require 'eglot)
(require 'cl-lib)
(require 'ert)
(require 'ert-x) ; ert-simulate-command
(require 'edebug)
(require 'python) ; python-mode-hook
(require 'company nil t)
(require 'subr-x)
(require 'flymake) ; project-diagnostics
;;; Helpers
(defmacro eglot--with-fixture (fixture &rest body)
"Setup FIXTURE, call BODY, teardown FIXTURE.
FIXTURE is a list. Its elements are of the form (FILE . CONTENT)
to create a readable FILE with CONTENT. FILE may be a directory
name and CONTENT another (FILE . CONTENT) list to specify a
directory hierarchy. FIXTURE's elements can also be (SYMBOL
VALUE) meaning SYMBOL should be bound to VALUE during BODY and
then restored."
(declare (indent 1) (debug t))
`(eglot--call-with-fixture
,fixture #'(lambda () ,@body)))
(defun eglot--make-file-or-dir (ass)
(let ((file-or-dir-name (car ass))
(content (cdr ass)))
(cond ((listp content)
(make-directory file-or-dir-name 'parents)
(let ((default-directory (concat default-directory "/" file-or-dir-name)))
(mapcan #'eglot--make-file-or-dir content)))
((stringp content)
(with-temp-buffer
(insert content)
(write-region nil nil file-or-dir-name nil 'nomessage))
(list (expand-file-name file-or-dir-name)))
(t
(eglot--error "Expected a string or a directory spec")))))
(defun eglot--call-with-fixture (fixture fn)
"Helper for `eglot--with-fixture'. Run FN under FIXTURE."
(let* ((fixture-directory (make-temp-file "eglot--fixture" t))
(default-directory fixture-directory)
file-specs created-files
syms-to-restore
new-servers
test-body-successful-p)
(dolist (spec fixture)
(cond ((symbolp spec)
(push (cons spec (symbol-value spec)) syms-to-restore)
(set spec nil))
((symbolp (car spec))
(push (cons (car spec) (symbol-value (car spec))) syms-to-restore)
(set (car spec) (cadr spec)))
((stringp (car spec)) (push spec file-specs))))
(unwind-protect
(let ((process-environment
;; Prevent user-configuration to have an influence on
;; language servers. (See github#441)
(cons "XDG_CONFIG_HOME=/dev/null" process-environment))
;; Prevent "Can't guess python-indent-offset ..." messages.
(python-indent-guess-indent-offset-verbose . nil)
(eglot-server-initialized-hook
(lambda (server) (push server new-servers))))
(setq created-files (mapcan #'eglot--make-file-or-dir file-specs))
(prog1 (funcall fn)
(setq test-body-successful-p t)))
(eglot--message
"Test body was %s" (if test-body-successful-p "OK" "A FAILURE"))
(unwind-protect
(let ((eglot-autoreconnect nil))
(dolist (server new-servers)
(when (jsonrpc-running-p server)
(condition-case oops
(eglot-shutdown
server nil 3 (not test-body-successful-p))
(error
(eglot--message "Non-critical shutdown error after test: %S"
oops))))
(when (not test-body-successful-p)
;; We want to do this after the sockets have
;; shut down such that any pending data has been
;; consumed and is available in the process
;; buffers.
(let ((buffers (delq nil (list
;; FIXME: Accessing "internal" symbol here.
(process-buffer (jsonrpc--process server))
(jsonrpc-stderr-buffer server)
(jsonrpc-events-buffer server)))))
(cond (noninteractive
(dolist (buffer buffers)
(eglot--message "%s:" (buffer-name buffer))
(princ (with-current-buffer buffer (buffer-string))
'external-debugging-output)))
(t
(eglot--message "Preserved for inspection: %s"
(mapconcat #'buffer-name buffers ", "))))))))
(eglot--cleanup-after-test fixture-directory created-files syms-to-restore)))))
(defun eglot--cleanup-after-test (fixture-directory created-files syms-to-restore)
(let ((buffers-to-delete
(delete nil (mapcar #'find-buffer-visiting created-files))))
(eglot--message "Killing %s, wiping %s, restoring %s"
buffers-to-delete
fixture-directory
(mapcar #'car syms-to-restore))
(cl-loop for (sym . val) in syms-to-restore
do (set sym val))
(dolist (buf buffers-to-delete) ;; have to save otherwise will get prompted
(with-current-buffer buf (save-buffer) (kill-buffer)))
(delete-directory fixture-directory 'recursive)))
(cl-defmacro eglot--with-timeout (timeout &body body)
(declare (indent 1) (debug t))
`(eglot--call-with-timeout ,timeout (lambda () ,@body)))
(defun eglot--call-with-timeout (timeout fn)
(let* ((tag (gensym "eglot-test-timeout"))
(timed-out (make-symbol "timeout"))
(timeout-and-message
(if (listp timeout) timeout
(list timeout "waiting for test to finish")))
(timeout (car timeout-and-message))
(message (cadr timeout-and-message))
(timer)
(retval))
(unwind-protect
(setq retval
(catch tag
(setq timer
(run-with-timer timeout nil
(lambda ()
(unless edebug-active
(throw tag timed-out)))))
(funcall fn)))
(cancel-timer timer)
(when (eq retval timed-out)
(error "%s" (concat "Timed out " message))))))
(defun eglot--find-file-noselect (file &optional noerror)
(unless (or noerror
(file-readable-p file)) (error "%s does not exist" file))
(find-file-noselect file))
(cl-defmacro eglot--sniffing ((&key server-requests
server-notifications
server-replies
client-requests
client-notifications
client-replies)
&rest body)
"Run BODY saving LSP JSON messages in variables, most recent first."
(declare (indent 1) (debug (sexp &rest form)))
(let ((log-event-ad-sym (make-symbol "eglot--event-sniff")))
`(unwind-protect
(let ,(delq nil (list server-requests
server-notifications
server-replies
client-requests
client-notifications
client-replies))
(advice-add
#'jsonrpc--log-event :before
(lambda (_proc message &optional type)
(cl-destructuring-bind (&key method id _error &allow-other-keys)
message
(let ((req-p (and method id))
(notif-p method)
(reply-p id))
(cond
((eq type 'server)
(cond (req-p ,(when server-requests
`(push message ,server-requests)))
(notif-p ,(when server-notifications
`(push message ,server-notifications)))
(reply-p ,(when server-replies
`(push message ,server-replies)))))
((eq type 'client)
(cond (req-p ,(when client-requests
`(push message ,client-requests)))
(notif-p ,(when client-notifications
`(push message ,client-notifications)))
(reply-p ,(when client-replies
`(push message ,client-replies)))))))))
'((name . ,log-event-ad-sym)))
,@body)
(advice-remove #'jsonrpc--log-event ',log-event-ad-sym))))
(cl-defmacro eglot--wait-for ((events-sym &optional (timeout 1) message) args &body body)
"Spin until FN match in EVENTS-SYM, flush events after it.
Pass TIMEOUT to `eglot--with-timeout'."
(declare (indent 2) (debug (sexp sexp sexp &rest form)))
`(eglot--with-timeout '(,timeout ,(or message
(format "waiting for:\n%s" (pp-to-string body))))
(let ((event
(cl-loop thereis (cl-loop for json in ,events-sym
for method = (plist-get json :method)
when (keywordp method)
do (plist-put json :method
(substring
(symbol-name method)
1))
when (funcall
(jsonrpc-lambda ,args ,@body) json)
return (cons json before)
collect json into before)
for i from 0
when (zerop (mod i 5))
;; do (eglot--message "still struggling to find in %s"
;; ,events-sym)
do
;; `read-event' is essential to have the file
;; watchers come through.
(read-event "[eglot] Waiting a bit..." nil 0.1)
(accept-process-output nil 0.1))))
(setq ,events-sym (cdr event))
(eglot--message "Event detected:\n%s"
(pp-to-string (car event))))))
;; `rust-mode' is not a part of Emacs, so we define these two shims
;; which should be more than enough for testing.
(unless (functionp 'rust-mode)
(define-derived-mode rust-mode prog-mode "Rust")
(add-to-list 'auto-mode-alist '("\\.rs\\'" . rust-mode)))
;; `typescript-mode' is not a part of Emacs, so we define these two
;; shims which should be more than enough for testing.
(unless (functionp 'typescript-mode)
(define-derived-mode typescript-mode prog-mode "TypeScript")
(add-to-list 'auto-mode-alist '("\\.ts\\'" . typescript-mode)))
(defun eglot--tests-connect (&optional timeout)
(let* ((timeout (or timeout 10))
(eglot-sync-connect t)
(eglot-connect-timeout timeout))
(apply #'eglot--connect (eglot--guess-contact))))
(defun eglot--simulate-key-event (char)
"Like (execute-kbd-macro (vector char)), but with `call-interactively'."
;; Also, this is a bit similar to what electric-tests.el does.
(setq last-input-event char)
(setq last-command-event char)
(call-interactively (key-binding (vector char))))
;;; Unit tests
(ert-deftest eclipse-connect ()
"Connect to eclipse.jdt.ls server."
(skip-unless (executable-find "jdtls"))
(eglot--with-fixture
'(("project/src/main/java/foo" . (("Main.java" . "")))
("project/.git/" . nil))
(with-current-buffer
(eglot--find-file-noselect "project/src/main/java/foo/Main.java")
(eglot--sniffing (:server-notifications s-notifs)
(should (eglot--tests-connect 20))
(eglot--wait-for (s-notifs 10)
(&key _id method &allow-other-keys)
(string= method "language/status"))))))
(defun eglot-tests--auto-detect-running-server-1 ()
(let (server)
(eglot--with-fixture
`(("project" . (("coiso.py" . "bla")
("merdix.py" . "bla")))
("anotherproject" . (("cena.py" . "bla"))))
(with-current-buffer
(eglot--find-file-noselect "project/coiso.py")
(should (setq server (eglot--tests-connect)))
(should (eglot-current-server)))
(with-current-buffer
(eglot--find-file-noselect "project/merdix.py")
(should (eglot-current-server))
(should (eq (eglot-current-server) server)))
(with-current-buffer
(eglot--find-file-noselect "anotherproject/cena.py")
(should-error (eglot--current-server-or-lose))))))
(ert-deftest auto-detect-running-server ()
"Visit a file and \\[eglot], then visit a neighbour."
(skip-unless (executable-find "pyls"))
(eglot-tests--auto-detect-running-server-1))
(ert-deftest auto-shutdown ()
"Visit a file and \\[eglot], then kill buffer."
(skip-unless (executable-find "pyls"))
(let (server
buffer)
(eglot--with-fixture
`(("project" . (("coiso.py" . "def coiso: pass"))))
(with-current-buffer
(setq buffer (eglot--find-file-noselect "project/coiso.py"))
(should (setq server (eglot--tests-connect)))
(should (eglot-current-server))
(let ((eglot-autoshutdown nil)) (kill-buffer buffer))
(should (jsonrpc-running-p server))
;; re-find file...
(setq buffer (eglot--find-file-noselect (buffer-file-name buffer)))
;; ;; but now kill it with `eglot-autoshutdown' set to t
(let ((eglot-autoshutdown t)) (kill-buffer buffer))
(should (not (jsonrpc-running-p server)))))))
(ert-deftest auto-reconnect ()
"Start a server. Kill it. Watch it reconnect."
(skip-unless (executable-find "pyls"))
(let (server (eglot-autoreconnect 1))
(eglot--with-fixture
`(("project" . (("coiso.py" . "bla")
("merdix.py" . "bla"))))
(with-current-buffer
(eglot--find-file-noselect "project/coiso.py")
(should (setq server (eglot--tests-connect)))
;; In 1.2 seconds > `eglot-autoreconnect' kill servers. We
;; should have a automatic reconnection.
(run-with-timer 1.2 nil (lambda () (delete-process
(jsonrpc--process server))))
(while (jsonrpc-running-p server) (accept-process-output nil 0.5))
(should (eglot-current-server))
;; Now try again too quickly
(setq server (eglot-current-server))
(let ((proc (jsonrpc--process server)))
(run-with-timer 0.5 nil (lambda () (delete-process proc)))
(while (process-live-p proc) (accept-process-output nil 0.5)))
(should (not (eglot-current-server)))))))
(ert-deftest rust-analyzer-watches-files ()
"Start rust-analyzer. Notify it when a critical file changes."
(skip-unless (executable-find "rust-analyzer"))
(skip-unless (executable-find "cargo"))
(let ((eglot-autoreconnect 1))
(eglot--with-fixture
'(("watch-project" . (("coiso.rs" . "bla")
("merdix.rs" . "bla"))))
(with-current-buffer
(eglot--find-file-noselect "watch-project/coiso.rs")
(should (zerop (shell-command "cargo init")))
(eglot--sniffing (
:server-requests s-requests
:client-notifications c-notifs
:client-replies c-replies
)
(should (eglot--tests-connect))
(let (register-id)
(eglot--wait-for (s-requests 1)
(&key id method &allow-other-keys)
(setq register-id id)
(string= method "client/registerCapability"))
(eglot--wait-for (c-replies 1)
(&key id error &allow-other-keys)
(and (eq id register-id) (null error))))
(delete-file "Cargo.toml")
(eglot--wait-for
(c-notifs 3 "waiting for didChangeWatchedFiles notification")
(&key method params &allow-other-keys)
(and (string= method "workspace/didChangeWatchedFiles")
(cl-destructuring-bind (&key uri type)
(elt (plist-get params :changes) 0)
(and (string= (eglot--path-to-uri "Cargo.toml") uri)
(= type 3))))))))))
(ert-deftest basic-diagnostics ()
"Test basic diagnostics."
(skip-unless (executable-find "pyls"))
(eglot--with-fixture
`(("diag-project" .
; colon missing after True
(("main.py" . "def foo(): if True pass"))))
(with-current-buffer
(eglot--find-file-noselect "diag-project/main.py")
(eglot--sniffing (:server-notifications s-notifs)
(eglot--tests-connect)
(eglot--wait-for (s-notifs 2)
(&key _id method &allow-other-keys)
(string= method "textDocument/publishDiagnostics"))
(flymake-start)
(goto-char (point-min))
(flymake-goto-next-error 1 '() t)
(should (eq 'flymake-error (face-at-point)))))))
(ert-deftest diagnostic-tags-unnecessary-code ()
"Test rendering of diagnostics tagged \"unnecessary\"."
(skip-unless (executable-find "rust-analyzer"))
(eglot--with-fixture
'(("diagnostic-tag-project" .
(("main.rs" .
"fn main() -> () { let test=3; }"))))
(with-current-buffer
(eglot--find-file-noselect "diagnostic-tag-project/main.rs")
(let ((eglot-server-programs '((rust-mode . ("rust-analyzer")))))
(should (zerop (shell-command "cargo init")))
(eglot--sniffing (:server-notifications s-notifs)
(eglot--tests-connect)
(eglot--wait-for (s-notifs 10)
(&key _id method &allow-other-keys)
(string= method "textDocument/publishDiagnostics"))
(flymake-start)
(goto-char (point-min))
(flymake-goto-next-error 1 '() t)
(should (eq 'eglot-diagnostic-tag-unnecessary-face (face-at-point))))))))
(defun eglot--eldoc-on-demand ()
;; Trick Eldoc 1.1.0 into accepting on-demand calls.
(eldoc t))
(defun eglot--tests-force-full-eldoc ()
;; FIXME: This uses some Eldoc implementation defatils.
(when (buffer-live-p eldoc--doc-buffer)
(with-current-buffer eldoc--doc-buffer
(let ((inhibit-read-only t))
(erase-buffer))))
(eglot--eldoc-on-demand)
(cl-loop
repeat 10
for retval = (and (buffer-live-p eldoc--doc-buffer)
(with-current-buffer eldoc--doc-buffer
(let ((bs (buffer-string)))
(unless (zerop (length bs)) bs))))
when retval return retval
do (sit-for 0.5)
finally (error "eglot--tests-force-full-eldoc didn't deliver")))
(ert-deftest rust-analyzer-hover-after-edit ()
"Hover and highlightChanges."
(skip-unless (executable-find "rust-analyzer"))
(skip-unless (executable-find "cargo"))
(eglot--with-fixture
'(("hover-project" .
(("main.rs" .
"fn test() -> i32 { let test=3; return te; }"))))
(with-current-buffer
(eglot--find-file-noselect "hover-project/main.rs")
(should (zerop (shell-command "cargo init")))
(eglot--sniffing (
:server-replies s-replies
:client-requests c-reqs
)
(eglot--tests-connect)
(goto-char (point-min))
(search-forward "return te")
(insert "st")
(progn
;; simulate these two which don't happen when buffer isn't
;; visible in a window.
(eglot--signal-textDocument/didChange)
(eglot--eldoc-on-demand))
(let (pending-id)
(eglot--wait-for (c-reqs 2)
(&key id method &allow-other-keys)
(setq pending-id id)
(string= method "textDocument/documentHighlight"))
(eglot--wait-for (s-replies 2)
(&key id &allow-other-keys)
(eq id pending-id)))))))
(ert-deftest rename-a-symbol ()
"Test basic symbol renaming."
(skip-unless (executable-find "pyls"))
(eglot--with-fixture
`(("rename-project"
. (("main.py" .
"def foo (bar) : 1 + bar\n\ndef bar() : pass"))))
(with-current-buffer
(eglot--find-file-noselect "rename-project/main.py")
(eglot--tests-connect)
(goto-char (point-min)) (search-forward "bar")
(eglot-rename "bla")
(should (equal (buffer-string)
"def foo (bla) : 1 + bla\n\ndef bar() : pass")))))
(ert-deftest basic-completions ()
"Test basic autocompletion in a python LSP."
(skip-unless (executable-find "pyls"))
(eglot--with-fixture
`(("project" . (("something.py" . "import sys\nsys.exi"))))
(with-current-buffer
(eglot--find-file-noselect "project/something.py")
(should (eglot--tests-connect))
(goto-char (point-max))
(completion-at-point)
(should (looking-back "sys.exit")))))
(ert-deftest non-unique-completions ()
"Test completion resulting in 'Complete, but not unique'."
(skip-unless (executable-find "pyls"))
;; FIXME: Doesn't work in Github CI.
(skip-unless (not (getenv "CI")))
(eglot--with-fixture
'(("project" . (("something.py" . "foo=1\nfoobar=2\nfoo"))))
(with-current-buffer
(eglot--find-file-noselect "project/something.py")
(should (eglot--tests-connect))
(goto-char (point-max))
(completion-at-point))
;; FIXME: `current-message' doesn't work here :-(
(with-current-buffer (messages-buffer)
(save-excursion
(goto-char (point-max))
(forward-line -1)
(should (looking-at "Complete, but not unique"))))))
(ert-deftest basic-xref ()
"Test basic xref functionality in a python LSP."
(skip-unless (executable-find "pyls"))
(eglot--with-fixture
`(("project" . (("something.py" . "def foo(): pass\ndef bar(): foo()"))))
(with-current-buffer
(eglot--find-file-noselect "project/something.py")
(should (eglot--tests-connect))
(search-forward "bar(): f")
(call-interactively 'xref-find-definitions)
(should (looking-at "foo(): pass")))))
(defvar eglot--test-python-buffer
"\
def foobarquux(a, b, c=True): pass
def foobazquuz(d, e, f): pass
")
(ert-deftest snippet-completions ()
"Test simple snippet completion in a python LSP."
(skip-unless (and (executable-find "pyls")
(functionp 'yas-minor-mode)))
(eglot--with-fixture
`(("project" . (("something.py" . ,eglot--test-python-buffer))))
(with-current-buffer
(eglot--find-file-noselect "project/something.py")
(yas-minor-mode 1)
(let ((eglot-workspace-configuration
`((:pyls . (:plugins (:jedi_completion (:include_params t)))))))
(should (eglot--tests-connect)))
(goto-char (point-max))
(insert "foobar")
(completion-at-point)
(should (looking-back "foobarquux("))
(should (looking-at "a, b)")))))
(defvar company-candidates)
(ert-deftest snippet-completions-with-company ()
"Test simple snippet completion in a python LSP."
(skip-unless (and (executable-find "pyls")
(functionp 'yas-minor-mode)
(functionp 'company-complete)))
(eglot--with-fixture
`(("project" . (("something.py" . ,eglot--test-python-buffer))))
(with-current-buffer
(eglot--find-file-noselect "project/something.py")
(yas-minor-mode 1)
(let ((eglot-workspace-configuration
`((:pyls . (:plugins (:jedi_completion (:include_params t)))))))
(should (eglot--tests-connect)))
(goto-char (point-max))
(insert "foo")
(company-mode)
(company-complete)
(should (looking-back "fooba"))
(should (= 2 (length company-candidates)))
;; this last one is brittle, since there it is possible that
;; pyls will change the representation of this candidate
(should (member "foobazquuz(d, e, f)" company-candidates)))))
(ert-deftest eglot-eldoc-after-completions ()
"Test documentation echo in a python LSP."
(skip-unless (executable-find "pyls"))
(eglot--with-fixture
`(("project" . (("something.py" . "import sys\nsys.exi"))))
(with-current-buffer
(eglot--find-file-noselect "project/something.py")
(should (eglot--tests-connect))
(goto-char (point-max))
(completion-at-point)
(should (looking-back "sys.exit"))
(should (string-match "^exit" (eglot--tests-force-full-eldoc))))))
(ert-deftest eglot-multiline-eldoc ()
"Test if suitable amount of lines of hover info are shown."
(skip-unless (executable-find "pyls"))
(eglot--with-fixture
`(("project" . (("hover-first.py" . "from datetime import datetime"))))
(with-current-buffer
(eglot--find-file-noselect "project/hover-first.py")
(should (eglot--tests-connect))
(goto-char (point-max))
;; one-line
(let* ((eldoc-echo-area-use-multiline-p t)
(captured-message (eglot--tests-force-full-eldoc)))
(should (string-match "datetim" captured-message))
(should (cl-find ?\n captured-message))))))
(ert-deftest eglot-single-line-eldoc ()
"Test if suitable amount of lines of hover info are shown."
(skip-unless (executable-find "pyls"))
(eglot--with-fixture
`(("project" . (("hover-first.py" . "from datetime import datetime"))))
(with-current-buffer
(eglot--find-file-noselect "project/hover-first.py")
(should (eglot--tests-connect))
(goto-char (point-max))
;; one-line
(let* ((eldoc-echo-area-use-multiline-p nil)
(captured-message (eglot--tests-force-full-eldoc)))
(should (string-match "datetim" captured-message))
(should (not (cl-find ?\n eldoc-last-message)))))))
(ert-deftest python-autopep-formatting ()
"Test formatting in the pyls python LSP.
pyls prefers autopep over yafp, despite its README stating the contrary."
;; Beware, default autopep rules can change over time, which may
;; affect this test.
(skip-unless (and (executable-find "pyls")
(executable-find "autopep8")
;; FIXME: Doesn't work in Github CI.
(not (getenv "CI"))))
(eglot--with-fixture
`(("project" . (("something.py" . "def a():pass\n\ndef b():pass"))))
(with-current-buffer
(eglot--find-file-noselect "project/something.py")
(should (eglot--tests-connect))
;; Try to format just the second line
(search-forward "b():pa")
(eglot-format (point-at-bol) (point-at-eol))
(should (looking-at "ss"))
(should
(string= (buffer-string) "def a():pass\n\n\ndef b(): pass\n"))
;; now format the whole buffer
(eglot-format-buffer)
(should
(string= (buffer-string) "def a(): pass\n\n\ndef b(): pass\n")))))
(ert-deftest python-yapf-formatting ()
"Test formatting in the pyls python LSP."
(skip-unless (and (executable-find "pyls")
(not (executable-find "autopep8"))
(or (executable-find "yapf")
(executable-find "yapf3"))))
(eglot--with-fixture
`(("project" . (("something.py" . "def a():pass\ndef b():pass"))))
(with-current-buffer
(eglot--find-file-noselect "project/something.py")
(should (eglot--tests-connect))
;; Try to format just the second line
(search-forward "b():pa")
(eglot-format (point-at-bol) (point-at-eol))
(should (looking-at "ss"))
(should
(string= (buffer-string) "def a():pass\n\n\ndef b():\n pass\n"))
;; now format the whole buffer
(eglot-format-buffer)
(should
(string= (buffer-string) "def a():\n pass\n\n\ndef b():\n pass\n")))))
(ert-deftest rust-on-type-formatting ()
"Test textDocument/onTypeFormatting agains rust-analyzer."
(skip-unless (executable-find "rust-analyzer"))
(skip-unless (executable-find "cargo"))
(eglot--with-fixture
'(("on-type-formatting-project" .
(("main.rs" .
"fn main() -> () {\n foo\n .bar()\n "))))
(with-current-buffer
(eglot--find-file-noselect "on-type-formatting-project/main.rs")
(let ((eglot-server-programs '((rust-mode . ("rust-analyzer")))))
(should (zerop (shell-command "cargo init")))
(eglot--sniffing (:server-notifications s-notifs)
(should (eglot--tests-connect))
(eglot--wait-for (s-notifs 10) (&key method &allow-other-keys)
(string= method "textDocument/publishDiagnostics")))
(goto-char (point-max))
(eglot--simulate-key-event ?.)
(should (looking-back "^ \\."))))))
(ert-deftest javascript-basic ()
"Test basic autocompletion in a JavaScript LSP."
(skip-unless (executable-find "typescript-language-server"))
(eglot--with-fixture
'(("project" . (("hello.js" . "console.log('Hello world!');"))))
(with-current-buffer
(eglot--find-file-noselect "project/hello.js")
(let ((eglot-server-programs
'((js-mode . ("typescript-language-server" "--stdio")))))
(goto-char (point-max))
(eglot--sniffing (:server-notifications
s-notifs
:client-notifications
c-notifs)
(should (eglot--tests-connect))
(eglot--wait-for (s-notifs 2) (&key method &allow-other-keys)
(string= method "textDocument/publishDiagnostics"))
(should (not (eq 'flymake-error (face-at-point))))
(insert "{")
(eglot--signal-textDocument/didChange)
(eglot--wait-for (c-notifs 1) (&key method &allow-other-keys)
(string= method "textDocument/didChange"))
(eglot--wait-for (s-notifs 2) (&key params method &allow-other-keys)
(and (string= method "textDocument/publishDiagnostics")
(cl-destructuring-bind (&key _uri diagnostics) params
(cl-find-if (jsonrpc-lambda (&key severity &allow-other-keys)
(= severity 1))
diagnostics)))))))))
(ert-deftest project-wide-diagnostics-typescript ()
"Test diagnostics through multiple files in a TypeScript LSP."
(skip-unless (executable-find "typescript-language-server"))
(eglot--with-fixture
'(("project" . (("hello.ts" . "const thing = 5;\nexport { thin }")
("hello2.ts" . "import { thing } from './hello'"))))
(eglot--make-file-or-dir '(".git"))
(let ((eglot-server-programs
'((typescript-mode . ("typescript-language-server" "--stdio")))))
;; Check both files because typescript-language-server doesn't
;; report all errors on startup, at least not with such a simple
;; setup.
(with-current-buffer (eglot--find-file-noselect "project/hello2.ts")
(eglot--sniffing (:server-notifications s-notifs)
(eglot--tests-connect)
(flymake-start)
(eglot--wait-for (s-notifs 10)
(&key _id method &allow-other-keys)
(string= method "textDocument/publishDiagnostics"))
(should (= 2 (length (flymake--project-diagnostics)))))
(with-current-buffer (eglot--find-file-noselect "hello.ts")
(eglot--sniffing (:server-notifications s-notifs)
(flymake-start)
(eglot--wait-for (s-notifs 10)
(&key _id method &allow-other-keys)
(string= method "textDocument/publishDiagnostics"))
(should (= 4 (length (flymake--project-diagnostics))))))))))
(ert-deftest project-wide-diagnostics-rust-analyzer ()
"Test diagnostics through multiple files in a TypeScript LSP."
(skip-unless (executable-find "rust-analyzer"))
(eglot--with-fixture
'(("project" .
(("main.rs" .
"fn main() -> () { let test=3; }")
("other-file.rs" .
"fn foo() -> () { let hi=3; }"))))
(eglot--make-file-or-dir '(".git"))
(let ((eglot-server-programs '((rust-mode . ("rust-analyzer")))))
;; Open other-file, and see diagnostics arrive for main.rs
(with-current-buffer (eglot--find-file-noselect "project/other-file.rs")
(should (zerop (shell-command "cargo init")))
(eglot--sniffing (:server-notifications s-notifs)
(eglot--tests-connect)
(flymake-start)
(eglot--wait-for (s-notifs 10)
(&key _id method &allow-other-keys)
(string= method "textDocument/publishDiagnostics"))
(let ((diags (flymake--project-diagnostics)))
(should (= 2 (length diags)))
;; Check that we really get a diagnostic from main.rs, and
;; not from other-file.rs
(should (string-suffix-p
"main.rs"
(flymake-diagnostic-buffer (car diags))))))))))
(ert-deftest json-basic ()
"Test basic autocompletion in vscode-json-languageserver."
(skip-unless (executable-find "vscode-json-languageserver"))
(eglot--with-fixture
'(("project" .
(("p.json" . "{\"foo.b")
("s.json" . "{\"properties\":{\"foo.bar\":{\"default\":\"fb\"}}}")
(".git" . nil))))
(with-current-buffer
(eglot--find-file-noselect "project/p.json")
(yas-minor-mode)
(goto-char 2)
(insert "\"$schema\": \"file://"
(file-name-directory buffer-file-name) "s.json\",")
(let ((eglot-server-programs
'((js-mode . ("vscode-json-languageserver" "--stdio")))))
(goto-char (point-max))
(should (eglot--tests-connect))
(completion-at-point)
(should (looking-back "\"foo.bar\": \""))
(should (looking-at "fb\"$"))))))
(defun eglot-tests--lsp-abiding-column-1 ()
(eglot--with-fixture
'(("project" .
(("foo.c" . "const char write_data[] = u8\"🚂🚃🚄🚅🚆🚈🚇🚈🚉🚊🚋🚌🚎🚝🚞🚟🚠🚡🛤🛲\";"))))
(let ((eglot-server-programs
'((c-mode . ("clangd")))))
(with-current-buffer
(eglot--find-file-noselect "project/foo.c")
(setq-local eglot-move-to-column-function #'eglot-move-to-lsp-abiding-column)
(setq-local eglot-current-column-function #'eglot-lsp-abiding-column)
(eglot--sniffing (:client-notifications c-notifs)
(eglot--tests-connect)
(end-of-line)
(insert "p ")
(eglot--signal-textDocument/didChange)
(eglot--wait-for (c-notifs 2) (&key params &allow-other-keys)
(should (equal 71 (cadddr (cadadr (aref (cadddr params) 0))))))
(beginning-of-line)
(should (eq eglot-move-to-column-function #'eglot-move-to-lsp-abiding-column))
(funcall eglot-move-to-column-function 71)
(should (looking-at "p")))))))
(ert-deftest eglot-lsp-abiding-column ()
"Test basic `eglot-lsp-abiding-column' and `eglot-move-to-lsp-abiding-column'."
(skip-unless (executable-find "clangd"))
(eglot-tests--lsp-abiding-column-1))
(ert-deftest eglot-ensure ()
"Test basic `eglot-ensure' functionality."
(skip-unless (executable-find "pyls"))
(eglot--with-fixture
`(("project" . (("foo.py" . "import sys\nsys.exi")
("bar.py" . "import sys\nsys.exi")))
(python-mode-hook
(eglot-ensure
(lambda ()
(remove-hook 'flymake-diagnostic-functions 'python-flymake)))))
(let (server)
;; need `ert-simulate-command' because `eglot-ensure'
;; relies on `post-command-hook'.
(with-current-buffer
(ert-simulate-command
'(find-file "project/foo.py"))
;; FIXME: This test fails without this sleep on my machine.
;; Figure out why and solve this more cleanly.
(sleep-for 0.1)
(should (setq server (eglot-current-server))))
(with-current-buffer
(ert-simulate-command
'(find-file "project/bar.py"))
(should (eq server (eglot-current-server)))))))
(ert-deftest slow-sync-connection-wait ()
"Connect with `eglot-sync-connect' set to t."
(skip-unless (executable-find "pyls"))
(eglot--with-fixture
`(("project" . (("something.py" . "import sys\nsys.exi"))))
(with-current-buffer
(eglot--find-file-noselect "project/something.py")
(let ((eglot-sync-connect t)
(eglot-server-programs
`((python-mode . ("sh" "-c" "sleep 1 && pyls")))))
(should (eglot--tests-connect 3))))))
(ert-deftest slow-sync-connection-intime ()
"Connect synchronously with `eglot-sync-connect' set to 2."
(skip-unless (executable-find "pyls"))
(eglot--with-fixture
`(("project" . (("something.py" . "import sys\nsys.exi"))))
(with-current-buffer
(eglot--find-file-noselect "project/something.py")
(let ((eglot-sync-connect 2)
(eglot-server-programs
`((python-mode . ("sh" "-c" "sleep 1 && pyls")))))
(should (eglot--tests-connect 3))))))
(ert-deftest slow-async-connection ()
"Connect asynchronously with `eglot-sync-connect' set to 2."
(skip-unless (executable-find "pyls"))
(eglot--with-fixture
`(("project" . (("something.py" . "import sys\nsys.exi"))))
(with-current-buffer
(eglot--find-file-noselect "project/something.py")
(let ((eglot-sync-connect 1)
(eglot-server-programs
`((python-mode . ("sh" "-c" "sleep 2 && pyls")))))
(should-not (apply #'eglot--connect (eglot--guess-contact)))
(eglot--with-timeout 3
(while (not (eglot-current-server))
(accept-process-output nil 0.2))
(should (eglot-current-server)))))))
(ert-deftest slow-sync-timeout ()
"Failed attempt at connection synchronously."
(skip-unless (executable-find "pyls"))
(eglot--with-fixture
`(("project" . (("something.py" . "import sys\nsys.exi"))))
(with-current-buffer
(eglot--find-file-noselect "project/something.py")
(let ((eglot-sync-connect t)
(eglot-connect-timeout 1)
(eglot-server-programs
`((python-mode . ("sh" "-c" "sleep 2 && pyls")))))
(should-error (apply #'eglot--connect (eglot--guess-contact)))))))
(ert-deftest eglot-capabilities ()
"Unit test for `eglot--server-capable'."
(cl-letf (((symbol-function 'eglot--capabilities)
(lambda (_dummy)
;; test data lifted from Golangserver example at
;; https://github.com/joaotavora/eglot/pull/74
(list :textDocumentSync 2 :hoverProvider t
:completionProvider '(:triggerCharacters ["."])
:signatureHelpProvider '(:triggerCharacters ["(" ","])
:definitionProvider t :typeDefinitionProvider t
:referencesProvider t :documentSymbolProvider t
:workspaceSymbolProvider t :implementationProvider t
:documentFormattingProvider t :xworkspaceReferencesProvider t
:xdefinitionProvider t :xworkspaceSymbolByProperties t)))
((symbol-function 'eglot--current-server-or-lose)
(lambda () nil)))
(should (eql 2 (eglot--server-capable :textDocumentSync)))
(should (eglot--server-capable :completionProvider :triggerCharacters))
(should (equal '(:triggerCharacters ["."]) (eglot--server-capable :completionProvider)))
(should-not (eglot--server-capable :foobarbaz))
(should-not (eglot--server-capable :textDocumentSync :foobarbaz))))
(ert-deftest eglot-strict-interfaces ()
(let ((eglot--lsp-interface-alist
`((FooObject . ((:foo :bar) (:baz))))))
(should
(equal '("foo" . "bar")
(let ((eglot-strict-mode nil))
(eglot--dbind (foo bar) `(:foo "foo" :bar "bar")
(cons foo bar)))))
(should-error
(let ((eglot-strict-mode '(disallow-non-standard-keys)))
(eglot--dbind (foo bar) `(:foo "foo" :bar "bar" :fotrix bargh)
(cons foo bar))))
(should
(equal '("foo" . "bar")
(let ((eglot-strict-mode nil))
(eglot--dbind (foo bar) `(:foo "foo" :bar "bar" :fotrix bargh)
(cons foo bar)))))
(should-error
(let ((eglot-strict-mode '(disallow-non-standard-keys)))
(eglot--dbind ((FooObject) foo bar) `(:foo "foo" :bar "bar" :fotrix bargh)
(cons foo bar))))
(should
(equal '("foo" . "bar")
(let ((eglot-strict-mode '(disallow-non-standard-keys)))
(eglot--dbind ((FooObject) foo bar) `(:foo "foo" :bar "bar" :baz bargh)
(cons foo bar)))))
(should
(equal '("foo" . nil)
(let ((eglot-strict-mode nil))
(eglot--dbind ((FooObject) foo bar) `(:foo "foo" :baz bargh)
(cons foo bar)))))
(should
(equal '("foo" . "bar")
(let ((eglot-strict-mode '(enforce-required-keys)))
(eglot--dbind ((FooObject) foo bar) `(:foo "foo" :bar "bar" :baz bargh)
(cons foo bar)))))
(should-error
(let ((eglot-strict-mode '(enforce-required-keys)))
(eglot--dbind ((FooObject) foo bar) `(:foo "foo" :baz bargh)
(cons foo bar))))))
(ert-deftest eglot-dcase ()
(let ((eglot--lsp-interface-alist
`((FooObject . ((:foo :bar) (:baz)))
(CodeAction (:title) (:kind :diagnostics :edit :command))
(Command ((:title . string) (:command . string)) (:arguments)))))
(should
(equal
"foo"
(eglot--dcase `(:foo "foo" :bar "bar")
(((FooObject) foo)
foo))))
(should
(equal
(list "foo" '(:title "hey" :command "ho") "some edit")
(eglot--dcase '(:title "foo"
:command (:title "hey" :command "ho")
:edit "some edit")
(((Command) _title _command _arguments)
(ert-fail "Shouldn't have destructured this object as a Command"))
(((CodeAction) title edit command)
(list title command edit)))))
(should
(equal
(list "foo" "some command" nil)
(eglot--dcase '(:title "foo" :command "some command")