require "testing_env"
require "dependency_collector"

class DependencyCollectorTests < Homebrew::TestCase
  def find_dependency(name)
    @d.deps.find { |dep| dep.name == name }
  end

  def find_requirement(klass)
    @d.requirements.find { |req| req.is_a? klass }
  end

  def setup
    super
    @d = DependencyCollector.new
  end

  def teardown
    DependencyCollector.clear_cache
    super
  end

  def test_dependency_creation
    @d.add "foo" => :build
    @d.add "bar" => ["--universal", :optional]
    assert_instance_of Dependency, find_dependency("foo")
    assert_equal 2, find_dependency("bar").tags.length
  end

  def test_add_returns_created_dep
    ret = @d.add "foo"
    assert_equal Dependency.new("foo"), ret
  end

  def test_dependency_tags
    assert_predicate Dependency.new("foo", [:build]), :build?
    assert_predicate Dependency.new("foo", [:build, :optional]), :optional?
    assert_includes Dependency.new("foo", ["universal"]).options, "--universal"
    assert_empty Dependency.new("foo").tags
  end

  def test_requirement_creation
    @d.add :x11
    assert_instance_of X11Requirement, find_requirement(X11Requirement)
  end

  def test_no_duplicate_requirements
    2.times { @d.add :x11 }
    assert_equal 1, @d.requirements.count
  end

  def test_requirement_tags
    @d.add x11: "2.5.1"
    @d.add xcode: :build
    assert_empty find_requirement(X11Requirement).tags
    assert_predicate find_requirement(XcodeRequirement), :build?
  end

  def test_x11_no_tag
    @d.add :x11
    assert_empty find_requirement(X11Requirement).tags
  end

  def test_x11_min_version
    @d.add x11: "2.5.1"
    assert_equal "2.5.1", find_requirement(X11Requirement).min_version.to_s
  end

  def test_x11_tag
    @d.add x11: :optional
    assert_predicate find_requirement(X11Requirement), :optional?
  end

  def test_x11_min_version_and_tag
    @d.add x11: ["2.5.1", :optional]
    dep = find_requirement(X11Requirement)
    assert_equal "2.5.1", dep.min_version.to_s
    assert_predicate dep, :optional?
  end

  def test_ant_dep
    @d.add ant: :build
    assert_equal find_dependency("ant"), Dependency.new("ant", [:build])
  end

  def test_raises_typeerror_for_unknown_classes
    assert_raises(TypeError) { @d.add(Class.new) }
  end

  def test_raises_typeerror_for_unknown_types
    assert_raises(TypeError) { @d.add(Object.new) }
  end

  def test_does_not_mutate_dependency_spec
    spec = { "foo" => :optional }
    copy = spec.dup
    @d.add(spec)
    assert_equal copy, spec
  end

  def test_resource_dep_git_url
    resource = Resource.new
    resource.url("git://example.com/foo/bar.git")
    assert_instance_of GitRequirement, @d.add(resource)
  end

  def test_resource_dep_7z_url
    resource = Resource.new
    resource.url("http://example.com/foo.7z")
    assert_equal Dependency.new("p7zip", [:build]), @d.add(resource)
  end

  def test_resource_dep_gzip_url
    resource = Resource.new
    resource.url("http://example.com/foo.tar.gz")
    assert_nil @d.add(resource)
  end

  def test_resource_dep_lz_url
    resource = Resource.new
    resource.url("http://example.com/foo.lz")
    assert_equal Dependency.new("lzip", [:build]), @d.add(resource)
  end

  def test_resource_dep_lha_url
    resource = Resource.new
    resource.url("http://example.com/foo.lha")
    assert_equal Dependency.new("lha", [:build]), @d.add(resource)
  end

  def test_resource_dep_lzh_url
    resource = Resource.new
    resource.url("http://example.com/foo.lzh")
    assert_equal Dependency.new("lha", [:build]), @d.add(resource)
  end

  def test_resource_dep_rar_url
    resource = Resource.new
    resource.url("http://example.com/foo.rar")
    assert_equal Dependency.new("unrar", [:build]), @d.add(resource)
  end

  def test_resource_dep_raises_for_unknown_classes
    resource = Resource.new
    resource.download_strategy = Class.new
    assert_raises(TypeError) { @d.add(resource) }
  end
end