I added a new `FormulaUnreadableError` subclass of
`FormulaUnavailableError` so existing `rescue`s of
`FormulaUnavailableError` handle this as well.
The new subclass will output the name of the formula with the error
(because this isn't always obvious from the original exception message)
followed by the original error message.
Fixes#1927.
This will allow us to have global setup and teardown for tests.
For example, we can automatically clear caches after each test, to avoid
annoying intermittent failures like #1879 and #1886.
Similar to 6fc1747e0550545b4fe80f5a1854d16dd2b08afe. I hadn't seen any
test failures caused by this, but I noticed it in the process of
trackign that down and it's an accident waiting to happen.
Instead of `puts`ing when the failure occurs save it until the error
message and print a prose description of what the failure was and the
output from the command. This makes the output from failing tests
significantly easier to read.
Previously, this returned a String, but a Tap instance seems much more
sensible.
I couldn't find anywhere this method was actually used, so the change
shouldn't break anything.
This had to be added in #1750 to work around special-casing for tabs
generated with Homebrew versions < 1.1.6. Now that 1.1.6 is the current
version, we can remove this hack.
GitHubReleaseDownloadStrategy downloads tarballs from GitHub Release assets.
To use it, add ":using => GitHubReleaseDownloadStrategy" to the URL section
of your formula. This download strategy uses GitHub access tokens (in the
environment variables GITHUB_TOKEN) to sign the request.
This strategy is suitable for corporate use just like S3DownloadStrategy,
because it lets you use a private GttHub repository for internal distribution.
It works with public one, but in that case simply use CurlDownloadStrategy.
In #1497 I switched from Keg#to_formula for comparing kegs to formulae
to comparing the name and tap in the keg's tab to the name and tap of
the formula.
However, this fails to match if the name and tap of the formula have
changed since the keg was installed, so it's clearly better to use
Keg#to_formula where possible, and fall back to the information in the
tab when #to_formula can't be used.