require "exceptions"

describe MultipleVersionsInstalledError do
  subject { described_class.new("foo") }
  its(:to_s) { is_expected.to eq("foo has multiple installed versions") }
end

describe NoSuchKegError do
  subject { described_class.new("foo") }
  its(:to_s) { is_expected.to eq("No such keg: #{HOMEBREW_CELLAR}/foo") }
end

describe FormulaValidationError do
  subject { described_class.new("foo", "sha257", "magic") }
  its(:to_s) {
    is_expected.to eq(%q(invalid attribute for formula 'foo': sha257 ("magic")))
  }
end

describe FormulaUnavailableError do
  subject { described_class.new("foo") }

  describe "#dependent_s" do
    it "returns nil if there is no dependent" do
      expect(subject.dependent_s).to be nil
    end

    it "returns nil if it depended on by itself" do
      subject.dependent = "foo"
      expect(subject.dependent_s).to be nil
    end

    it "returns a string if there is a dependent" do
      subject.dependent = "foobar"
      expect(subject.dependent_s).to eq("(dependency of foobar)")
    end
  end

  context "without a dependent" do
    its(:to_s) { is_expected.to eq('No available formula with the name "foo" ') }
  end

  context "with a dependent" do
    before(:each) do
      subject.dependent = "foobar"
    end

    its(:to_s) {
      is_expected.to eq('No available formula with the name "foo" (dependency of foobar)')
    }
  end
end

describe TapFormulaUnavailableError do
  subject { described_class.new(tap, "foo") }
  let(:tap) { double(Tap, user: "u", repo: "r", to_s: "u/r", installed?: false) }
  its(:to_s) { is_expected.to match(%r{Please tap it and then try again: brew tap u/r}) }
end

describe FormulaClassUnavailableError do
  subject { described_class.new("foo", "foo.rb", "Foo", list) }
  let(:mod) do
    Module.new do
      class Bar < Requirement; end
      class Baz < Formula; end
    end
  end

  context "no classes" do
    let(:list) { [] }
    its(:to_s) {
      is_expected.to match(/Expected to find class Foo, but found no classes\./)
    }
  end

  context "class not derived from Formula" do
    let(:list) { [mod.const_get(:Bar)] }
    its(:to_s) {
      is_expected.to match(/Expected to find class Foo, but only found: Bar \(not derived from Formula!\)\./)
    }
  end

  context "class derived from Formula" do
    let(:list) { [mod.const_get(:Baz)] }
    its(:to_s) { is_expected.to match(/Expected to find class Foo, but only found: Baz\./) }
  end
end

describe FormulaUnreadableError do
  subject { described_class.new("foo", formula_error) }
  let(:formula_error) { LoadError.new("bar") }
  its(:to_s) { is_expected.to eq("foo: bar") }
end

describe TapUnavailableError do
  subject { described_class.new("foo") }
  its(:to_s) { is_expected.to eq("No available tap foo.\n") }
end

describe TapAlreadyTappedError do
  subject { described_class.new("foo") }
  its(:to_s) { is_expected.to eq("Tap foo already tapped.\n") }
end

describe TapPinStatusError do
  context "pinned" do
    subject { described_class.new("foo", true) }
    its(:to_s) { is_expected.to eq("foo is already pinned.") }
  end

  context "unpinned" do
    subject { described_class.new("foo", false) }
    its(:to_s) { is_expected.to eq("foo is already unpinned.") }
  end
end

describe BuildError do
  subject { described_class.new(formula, "badprg", %w[arg1 arg2], {}) }
  let(:formula) { double(Formula, name: "foo") }
  its(:to_s) { is_expected.to eq("Failed executing: badprg arg1 arg2") }
end

describe OperationInProgressError do
  subject { described_class.new("foo") }
  its(:to_s) { is_expected.to match(/Operation already in progress for foo/) }
end

describe FormulaInstallationAlreadyAttemptedError do
  subject { described_class.new(formula) }
  let(:formula) { double(Formula, full_name: "foo/bar") }
  its(:to_s) { is_expected.to eq("Formula installation already attempted: foo/bar") }
end

describe FormulaConflictError do
  subject { described_class.new(formula, [conflict]) }
  let(:formula) { double(Formula, full_name: "foo/qux") }
  let(:conflict) { double(name: "bar", reason: "I decided to") }
  its(:to_s) { is_expected.to match(/Please `brew unlink bar` before continuing\./) }
end

describe CompilerSelectionError do
  subject { described_class.new(formula) }
  let(:formula) { double(Formula, full_name: "foo") }
  its(:to_s) { is_expected.to match(/foo cannot be built with any available compilers\./) }
end

describe CurlDownloadStrategyError do
  context "file does not exist" do
    subject { described_class.new("file:///tmp/foo") }
    its(:to_s) { is_expected.to eq("File does not exist: /tmp/foo") }
  end

  context "download failed" do
    subject { described_class.new("http://brew.sh") }
    its(:to_s) { is_expected.to eq("Download failed: http://brew.sh") }
  end
end

describe ErrorDuringExecution do
  subject { described_class.new("badprg", %w[arg1 arg2]) }
  its(:to_s) { is_expected.to eq("Failure while executing: badprg arg1 arg2") }
end

describe ChecksumMismatchError do
  subject { described_class.new("/file.tar.gz", hash1, hash2) }
  let(:hash1) { double(hash_type: "sha256", to_s: "deadbeef") }
  let(:hash2) { double(hash_type: "sha256", to_s: "deadcafe") }
  its(:to_s) { is_expected.to match(/SHA256 mismatch/) }
end

describe ResourceMissingError do
  subject { described_class.new(formula, resource) }
  let(:formula) { double(Formula, full_name: "bar") }
  let(:resource) { double(inspect: "<resource foo>") }
  its(:to_s) { is_expected.to eq("bar does not define resource <resource foo>") }
end

describe DuplicateResourceError do
  subject { described_class.new(resource) }
  let(:resource) { double(inspect: "<resource foo>") }
  its(:to_s) { is_expected.to eq("Resource <resource foo> is defined more than once") }
end

describe BottleFormulaUnavailableError do
  subject { described_class.new("/foo.bottle.tar.gz", "foo/1.0/.brew/foo.rb") }
  let(:formula) { double(Formula, full_name: "foo") }
  its(:to_s) { is_expected.to match(/This bottle does not contain the formula file/) }
end