#N/A Add gulp_not_task rule

README.md

@@ -158,6 +158,7 @@ using the matched rule and runs it. Rules enabled by default are as follows:
 * `git_stash` – stashes you local modifications before rebasing or switching branch;
 * `go_run` – appends `.go` extension when compiling/running Go programs
 * `grep_recursive` – adds `-r` when you trying to `grep` directory;
+* `gulp_not_task` – fixes misspelled gulp tasks;
 * `has_exists_script` – prepends `./` when script/binary exists;
 * `heroku_no_command` – fixes wrong `heroku` commands like `heroku log`;
 * `history` – tries to replace command with most similar command from history;

tests/rules/test_gulp_not_task.py

@@ -0,0 +1,28 @@
+import pytest
+from tests.utils import Command
+from thefuck.rules.gulp_not_task import match, get_new_command
+
+
+def stdout(task):
+    return '''[00:41:11] Using gulpfile gulpfile.js
+[00:41:11] Task '{}' is not in your gulpfile
+[00:41:11] Please check the documentation for proper gulpfile formatting
+'''.format(task)
+
+
+def test_match():
+    assert match(Command('gulp srve', stdout('srve')), None)
+
+
+@pytest.mark.parametrize('script, stdout', [
+    ('gulp serve', ''),
+    ('cat srve', stdout('srve'))])
+def test_not_march(script, stdout):
+    assert not match(Command(script, stdout), None)
+
+
+def test_get_new_command(mocker):
+    mocker.patch('thefuck.rules.gulp_not_task.get_gulp_tasks', return_value=[
+        'serve', 'build', 'default'])
+    command = Command('gulp srve', stdout('srve'))
+    assert get_new_command(command, None) == 'gulp serve'

thefuck/rules/gulp_not_task.py

@@ -0,0 +1,22 @@
+import re
+import subprocess
+from thefuck.utils import get_closest, replace_argument
+
+
+def match(command, script):
+    return command.script.startswith('gulp')\
+        and 'is not in your gulpfile' in command.stdout
+
+
+def get_gulp_tasks():
+    proc = subprocess.Popen(['gulp', '--tasks-simple'],
+                            stdout=subprocess.PIPE)
+    return [line.decode('utf-8')[:-1]
+            for line in proc.stdout.readlines()]
+
+
+def get_new_command(command, script):
+    wrong_task = re.findall(r"Task '(\w+)' is not in your gulpfile",
+                            command.stdout)[0]
+    fixed_task = get_closest(wrong_task, get_gulp_tasks())
+    return replace_argument(command.script, wrong_task, fixed_task)