brew-test-bot: uninstall formula if already installed.

1 files changed, 1 insertions, 0 deletions

diff --git a/Library/Contributions/cmd/brew-test-bot.rb b/Library/Contributions/cmd/brew-test-bot.rb
index 2b9fada1c..baf0e9c93 100755
--- a/Library/Contributions/cmd/brew-test-bot.rb
+++ b/Library/Contributions/cmd/brew-test-bot.rb
@@ -250,6 +250,7 @@ class Test
     test "brew audit #{formula}"
     test "brew fetch #{dependencies}" unless dependencies.empty?
     test "brew fetch --build-bottle #{formula}"
+    test "brew uninstall #{formula}" if formula_object.installed?
     test "brew install --verbose #{dependencies}" unless dependencies.empty?
     test "brew install --verbose --build-bottle #{formula}"
     return unless steps.last.passed?