homebrew-core/Formula/detekt.rb

class Detekt < Formula
  desc "Static code analysis for Kotlin"
  homepage "https://github.com/detekt/detekt"
  url "https://jcenter.bintray.com/io/gitlab/arturbosch/detekt/detekt-cli/1.14.2/detekt-cli-1.14.2-all.jar"
  sha256 "04d3e959061c546af3cea9e08794621c03a6caf157f6847a31b4d13d55df961a"
  license "Apache-2.0"

  livecheck do
    url :homepage
    regex(/^v?(\d+(?:\.\d+)+)$/i)
  end

  bottle :unneeded

  depends_on "openjdk"

  def install
    libexec.install "detekt-cli-#{version}-all.jar"
    bin.write_jar_script libexec/"detekt-cli-#{version}-all.jar", "detekt"
  end

  test do
    # generate default config for testing
    system bin/"detekt", "--generate-config"
    assert_match "empty-blocks:", File.read(testpath/"detekt.yml")

    (testpath/"input.kt").write <<~EOS
      fun main() {

      }
    EOS
    shell_output("#{bin}/detekt --input input.kt --report txt:output.txt --config #{testpath}/detekt.yml", 2)
    assert_equal "EmptyFunctionBlock", shell_output("cat output.txt").slice(/\w+/)
  end
end