brew/Library/Homebrew/test/test_exceptions.rb

require "testing_env"
require "exceptions"

class ExceptionsTest < Homebrew::TestCase
  def test_multiple_versions_installed_error
    assert_equal "foo has multiple installed versions",
      MultipleVersionsInstalledError.new("foo").to_s
  end

  def test_no_such_keg_error
    assert_equal "No such keg: #{HOMEBREW_CELLAR}/foo",
      NoSuchKegError.new("foo").to_s
  end

  def test_formula_validation_error
    assert_equal %(invalid attribute for formula 'foo': sha257 ("magic")),
      FormulaValidationError.new("foo", "sha257", "magic").to_s
  end

  def test_formula_unavailable_error
    e = FormulaUnavailableError.new "foo"
    assert_nil e.dependent_s

    e.dependent = "foo"
    assert_nil e.dependent_s

    e.dependent = "foobar"
    assert_equal "(dependency of foobar)", e.dependent_s

    assert_equal "No available formula with the name \"foo\" (dependency of foobar)",
      e.to_s
  end

  def test_tap_formula_unavailable_error
    t = stub(user: "u", repo: "r", to_s: "u/r", installed?: false)
    assert_match "Please tap it and then try again: brew tap u/r",
      TapFormulaUnavailableError.new(t, "foo").to_s
  end

  def test_formula_class_unavailable_error
    mod = Module.new
    mod.module_eval <<-EOS.undent
      class Bar < Requirement; end
      class Baz < Formula; end
    EOS

    assert_match "Expected to find class Foo, but found no classes.",
      FormulaClassUnavailableError.new("foo", "foo.rb", "Foo", []).to_s

    list = [mod.const_get(:Bar)]
    assert_match "Expected to find class Foo, but only found: Bar (not derived from Formula!).",
      FormulaClassUnavailableError.new("foo", "foo.rb", "Foo", list).to_s

    list = [mod.const_get(:Baz)]
    assert_match "Expected to find class Foo, but only found: Baz.",
      FormulaClassUnavailableError.new("foo", "foo.rb", "Foo", list).to_s
  end

  def test_tap_unavailable_error
    assert_equal "No available tap foo.\n", TapUnavailableError.new("foo").to_s
  end

  def test_tap_already_tapped_error
    assert_equal "Tap foo already tapped.\n",
      TapAlreadyTappedError.new("foo").to_s
  end

  def test_pin_status_error
    assert_equal "foo is already pinned.",
      TapPinStatusError.new("foo", true).to_s
    assert_equal "foo is already unpinned.",
      TapPinStatusError.new("foo", false).to_s
  end

  def test_build_error
    f = stub(name: "foo")
    assert_equal "Failed executing: badprg arg1 arg2",
      BuildError.new(f, "badprg", %w[arg1 arg2], {}).to_s
  end

  def test_operation_in_progress_error
    assert_match "Operation already in progress for bar",
      OperationInProgressError.new("bar").to_s
  end

  def test_formula_installation_already_attempted_error
    f = stub(full_name: "foo/bar")
    assert_equal "Formula installation already attempted: foo/bar",
      FormulaInstallationAlreadyAttemptedError.new(f).to_s
  end

  def test_formula_conflict_error
    f = stub(full_name: "foo/qux")
    c = stub(name: "bar", reason: "I decided to")
    assert_match "Please `brew unlink bar` before continuing.",
      FormulaConflictError.new(f, [c]).to_s
  end

  def test_compiler_selection_error
    f = stub(full_name: "foo")
    assert_match "foo cannot be built with any available compilers.",
      CompilerSelectionError.new(f).to_s
  end

  def test_curl_download_strategy_error
    assert_equal "File does not exist: /tmp/foo",
      CurlDownloadStrategyError.new("file:///tmp/foo").to_s
    assert_equal "Download failed: http://brew.sh",
      CurlDownloadStrategyError.new("http://brew.sh").to_s
  end

  def test_error_during_execution
    assert_equal "Failure while executing: badprg arg1 arg2",
      ErrorDuringExecution.new("badprg", %w[arg1 arg2]).to_s
  end

  def test_checksum_mismatch_error
    h1 = stub(hash_type: "sha256", to_s: "deadbeef")
    h2 = stub(hash_type: "sha256", to_s: "deadcafe")
    assert_match "SHA256 mismatch",
      ChecksumMismatchError.new("/file.tar.gz", h1, h2).to_s
  end

  def test_resource_missing_error
    f = stub(full_name: "bar")
    r = stub(inspect: "<resource foo>")
    assert_match "bar does not define resource <resource foo>",
      ResourceMissingError.new(f, r).to_s
  end

  def test_duplicate_resource_error
    r = stub(inspect: "<resource foo>")
    assert_equal "Resource <resource foo> is defined more than once",
      DuplicateResourceError.new(r).to_s
  end

  def test_bottle_version_mismatch_error
    f = stub(full_name: "foo")
    assert_match "Bottle version mismatch",
      BottleVersionMismatchError.new("/foo.bottle.tar.gz", "1.0", f, "1.1").to_s
  end
end