Convert Bash test to spec.

1 files changed, 52 insertions, 0 deletions

diff --git a/Library/Homebrew/test/bash_spec.rb b/Library/Homebrew/test/bash_spec.rb
new file mode 100644
index 000000000..1b0f15066
--- /dev/null
+++ b/Library/Homebrew/test/bash_spec.rb
@@ -0,0 +1,52 @@
+require "open3"
+
+RSpec::Matchers.define :have_valid_bash_syntax do
+  match do |file|
+    stdout, stderr, status = Open3.capture3("/bin/bash", "-n", file)
+
+    @actual = [file, stderr]
+
+    stdout.empty? && status.success?
+  end
+
+  failure_message do |(file, stderr)|
+    "expected that #{file} is a valid Bash file:\n#{stderr}"
+  end
+end
+
+describe "Bash" do
+  context "brew" do
+    subject { HOMEBREW_LIBRARY_PATH.parent.parent/"bin/brew" }
+    it { is_expected.to have_valid_bash_syntax }
+  end
+
+  context "every `.sh` file" do
+    it "has valid bash syntax" do
+      Pathname.glob("#{HOMEBREW_LIBRARY_PATH}/**/*.sh").each do |path|
+        relative_path = path.relative_path_from(HOMEBREW_LIBRARY_PATH)
+        next if relative_path.to_s.start_with?("shims/", "test/", "vendor/")
+
+        expect(path).to have_valid_bash_syntax
+      end
+    end
+  end
+
+  context "Bash completion" do
+    subject { HOMEBREW_LIBRARY_PATH.parent.parent/"completions/bash/brew" }
+    it { is_expected.to have_valid_bash_syntax }
+  end
+
+  context "every shim script" do
+    it "has valid bash syntax" do
+      # These have no file extension, but can be identified by their shebang.
+      (HOMEBREW_LIBRARY_PATH/"shims").find do |path|
+        next if path.directory?
+        next if path.symlink?
+        next unless path.executable?
+        next unless path.read(12) == "#!/bin/bash\n"
+
+        expect(path).to have_valid_bash_syntax
+      end
+    end
+  end
+end