Merge pull request #551 from scorphus/git-bisect-usage

#N/A: Add `git_bisect_usage` rule

README.md

@@ -164,6 +164,7 @@ using the matched rule and runs it. Rules enabled by default are as follows:
 * `fix_alt_space` – replaces Alt+Space with Space character;
 * `fix_file` – opens a file with an error in your `$EDITOR`;
 * `git_add` – fixes *"pathspec 'foo' did not match any file(s) known to git."*;
+* `git_bisect_usage` – fixes `git bisect strt`, `git bisect goood`, `git bisect rset`, etc. when bisecting;
 * `git_branch_delete` – changes `git branch -d` to `git branch -D`;
 * `git_branch_exists` – offers `git branch -d foo`, `git branch -D foo` or `git checkout foo` when creating a branch that already exists;
 * `git_branch_list` – catches `git branch list` in place of `git branch` and removes created branch;

tests/rules/test_git_bisect_usage.py

@@ -0,0 +1,30 @@
+import pytest
+from tests.utils import Command
+from thefuck.rules.git_bisect_usage import match, get_new_command
+
+
+@pytest.fixture
+def stderr():
+    return ("usage: git bisect [help|start|bad|good|new|old"
+            "|terms|skip|next|reset|visualize|replay|log|run]")
+
+
+@pytest.mark.parametrize('script', [
+    'git bisect strt', 'git bisect rset', 'git bisect goood'])
+def test_match(stderr, script):
+    assert match(Command(script=script, stderr=stderr))
+
+
+@pytest.mark.parametrize('script', [
+    'git bisect', 'git bisect start', 'git bisect good'])
+def test_not_match(script):
+    assert not match(Command(script=script, stderr=''))
+
+
+@pytest.mark.parametrize('script, new_cmd, ', [
+    ('git bisect goood', ['good', 'old', 'log']),
+    ('git bisect strt', ['start', 'terms', 'reset']),
+    ('git bisect rset', ['reset', 'next', 'start'])])
+def test_get_new_command(stderr, script, new_cmd):
+    new_cmd = ['git bisect %s' % cmd for cmd in new_cmd]
+    assert get_new_command(Command(script=script, stderr=stderr)) == new_cmd

thefuck/rules/git_bisect_usage.py

@@ -0,0 +1,16 @@
+import re
+from thefuck.utils import replace_command
+from thefuck.specific.git import git_support
+
+
+@git_support
+def match(command):
+    return ('bisect' in command.script_parts and
+            'usage: git bisect' in command.stderr)
+
+
+@git_support
+def get_new_command(command):
+    broken = re.findall(r'git bisect ([^ $]*).*', command.script)[0]
+    usage = re.findall(r'usage: git bisect \[([^\]]+)\]', command.stderr)[0]
+    return replace_command(command, broken, usage.split('|'))