Fix test error "fatal: empty ident name (for <(null)>) not allowed"

[alzeih]

This occurs when there is no global setting for git config options user.name and user.email

An example of the error shown below:

E           pre_commit.util.CalledProcessError: Command: ('/usr/bin/git', 'commit', '-m', 'init', '--allow-empty')
E           Return code: 128
E           Expected return code: 0
E           Output: (none)
E           Errors:
E
E               *** Please tell me who you are.
E
E               Run
E
E                 git config --global user.email "you@example.com"
E                 git config --global user.name "Your Name"
E
E               to set your account's default identity.
E               Omit --global to set the identity only in this repository.
E
E               fatal: empty ident name (for <(null)>) not allowed

[asottile]

This is already handled here:

pre-commit-hooks/.travis.yml

Lines 11 to 13 in 77a7bba

	before_install:
	- git config --global user.name "Travis CI"
	- git config --global user.email "user@example.com"

(also you've got tabs)

[alzeih]

@asottile It's not handled when running the test from tox locally though

I'll fix the tabs in a rebase :/ Edit: fixed

[asottile]

Thanks for the PR!

[asottile]

I imagine pre-commit/pre-commit could benefit from the same change