homebrew-core/Formula/shadowenv.rb

class Shadowenv < Formula
  desc "Reversible directory-local environment variable manipulations"
  homepage "https://shopify.github.io/shadowenv/"
  url "https://github.com/Shopify/shadowenv/archive/1.1.0.tar.gz"
  sha256 "7b5b70c8395a2af1c2e6561f35fbeeedf2f356b868e3647950ee0de73694a112"

  bottle do
    cellar :any_skip_relocation
    sha256 "3fcca1d9cc12db3fd1551da2ebce5091e0dcb98c1b41ecb43d170361bfb4adb3" => :mojave
    sha256 "620d22d89c8e2867b0e5ea4c0ea0c1ad1645383908869d60e277cf59db79ad62" => :high_sierra
    sha256 "34b338e0f8fe27ed55fe97d5ea38df4c42323c00eadac9e6c2b0f30edd18c30f" => :sierra
  end

  depends_on "rust" => :build

  def install
    system "cargo", "install", "--root", prefix, "--path", "."
    man1.install "#{buildpath}/man/man1/shadowenv.1"
    man5.install "#{buildpath}/man/man5/shadowlisp.5"
  end

  test do
    expected_output = <<~EOM
      EXAMPLE:
      EXAMPLE2:b
      EXAMPLE3:b
      EXAMPLE_PATH:a:b:d
      ---
      EXAMPLE:a
      EXAMPLE2:
      EXAMPLE3:a
      EXAMPLE_PATH:c:d
    EOM
    environment = "export EXAMPLE2=b EXAMPLE3=b EXAMPLE_PATH=a:b:d;"
    hash = "1256a7c3de15e864"
    data = {
      "scalars" => [
        { "name" => "EXAMPLE2", "original" => nil, "current" => "b" },
        { "name" => "EXAMPLE", "original" => "a", "current" => nil },
        { "name" => "EXAMPLE3", "original" => "a", "current" => "b" },
      ],
      "lists"   => [
        { "name" => "EXAMPLE_PATH", "additions" => ["b", "a"], "deletions" => ["c"] },
      ],
    }
    # Read ...'\"'\"'... on the next line as a ruby `...' + "'" + '...` but for bash
    shadowenv_command = "#{bin}/shadowenv hook '\"'\"'#{hash}:#{data.to_json}'\"'\"' 2> /dev/null"
    print_vars = "echo EXAMPLE:$EXAMPLE; echo EXAMPLE2:$EXAMPLE2; echo EXAMPLE3:$EXAMPLE3; echo EXAMPLE_PATH:$EXAMPLE_PATH;"
    actual_output = shell_output("bash -c '#{environment} #{print_vars} echo ---; eval \"$(#{shadowenv_command})\"; #{print_vars}'")

    assert_equal expected_output, actual_output
  end
end