feat(brew): automatically update and upgrade brew (#105)

action/main.py

@@ -274,6 +274,26 @@ def audit_formula(formula: str) -> bool:
     )
 
 
+def brew_upgrade() -> bool:
+    print('Updating Homebrew')
+    result = _run_subprocess(
+        args_list=[
+            'brew',
+            'update'
+        ]
+    )
+    if not result:
+        return False
+
+    print('Upgrading Homebrew')
+    return _run_subprocess(
+        args_list=[
+            'brew',
+            'upgrade'
+        ]
+    )
+
+
 def install_formula(formula: str) -> bool:
     print(f'Installing formula {formula}')
     env = dict(
@@ -316,6 +336,11 @@ def main():
         print('Skipping audit, install, and test')
         return
 
+    upgrade_status = brew_upgrade()
+    if not upgrade_status:
+        print('::error:: Homebrew update or upgrade failed')
+        raise SystemExit(1)
+
     if not audit_formula(formula):
         print(f'::error:: Formula {formula} failed audit')
         FAILURES.append('audit')

tests/unit/test_main.py

@@ -110,6 +110,10 @@ def test_is_brew_installed(operating_system):
     assert main.is_brew_installed()
 
 
+def test_brew_upgrade():
+    assert main.brew_upgrade()
+
+
 def test_audit_formula():
     assert main.audit_formula(formula='hello_world')