Merge pull request #249 from mcarton/cargo

Add two cargo related rules

README.md

@@ -146,6 +146,8 @@ sudo pip install thefuck --upgrade
 The Fuck tries to match a rule for the previous command, creates a new command
 using the matched rule and runs it. Rules enabled by default are as follows:
 
+* `cargo` – runs `cargo build` instead of `cargo`;
+* `cargo_no_command` – fixes wrongs commands like `cargo buid`;
 * `cd_correction` – spellchecks and correct failed cd commands;
 * `cd_mkdir` – creates directories before cd'ing into them;
 * `cd_parent` – changes `cd..` to `cd ..`;

tests/rules/test_cargo_no_command.py

@@ -0,0 +1,21 @@
+import pytest
+from thefuck.rules.cargo_no_command import match, get_new_command
+from tests.utils import Command
+
+
+no_such_subcommand = """No such subcommand
+
+        Did you mean `build`?
+"""
+
+
+@pytest.mark.parametrize('command', [
+    Command(script='cargo buid', stderr=no_such_subcommand)])
+def test_match(command):
+    assert match(command, None)
+
+
+@pytest.mark.parametrize('command, new_command', [
+    (Command('cargo buid', stderr=no_such_subcommand), 'cargo build')])
+def test_get_new_command(command, new_command):
+    assert get_new_command(command, None) == new_command

thefuck/rules/cargo.py

@@ -0,0 +1,6 @@
+def match(command, settings):
+    return command.script == 'cargo'
+
+
+def get_new_command(command, settings):
+    return 'cargo build'

thefuck/rules/cargo_no_command.py

@@ -0,0 +1,14 @@
+import re
+
+
+def match(command, settings):
+    return ('cargo' in command.script
+            and 'No such subcommand' in command.stderr
+            and 'Did you mean' in command.stderr)
+
+
+def get_new_command(command, settings):
+    broken = command.script.split()[1]
+    fix = re.findall(r'Did you mean `([^`]*)`', command.stderr)[0]
+
+    return command.script.replace(broken, fix, 1)