1 files changed, 34 insertions, 0 deletions
diff --git a/Library/Homebrew/test/bash_test.rb b/Library/Homebrew/test/bash_test.rb
new file mode 100644
index 000000000..ff418c787
--- /dev/null
+++ b/Library/Homebrew/test/bash_test.rb
@@ -0,0 +1,34 @@
+require "testing_env"
+
+class BashTests < Homebrew::TestCase
+  def assert_valid_bash_syntax(file)
+    output = Utils.popen_read("/bin/bash -n #{file} 2>&1")
+    assert $?.success?, output
+  end
+
+  def test_bin_brew
+    assert_valid_bash_syntax HOMEBREW_LIBRARY_PATH.parent.parent/"bin/brew"
+  end
+
+  def test_bash_code
+    Pathname.glob("#{HOMEBREW_LIBRARY_PATH}/**/*.sh").each do |pn|
+      pn_relative = pn.relative_path_from(HOMEBREW_LIBRARY_PATH)
+      next if pn_relative.to_s.start_with?("shims/", "test/", "vendor/")
+      assert_valid_bash_syntax pn
+    end
+  end
+
+  def test_bash_completion
+    script = HOMEBREW_LIBRARY_PATH.parent.parent/"completions/bash/brew"
+    assert_valid_bash_syntax script
+  end
+
+  def test_bash_shims
+    # These have no file extension, but can be identified by their shebang.
+    (HOMEBREW_LIBRARY_PATH/"shims").find do |pn|
+      next if pn.directory? || pn.symlink?
+      next unless pn.executable? && pn.read(12) == "#!/bin/bash\n"
+      assert_valid_bash_syntax pn
+    end
+  end
+end