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|
# typed: true
# frozen_string_literal: true
require "test_helper"
module RubyLsp
class TypeInferrerTest < Minitest::Test
def setup
@index = RubyIndexer::Index.new
@type_inferrer = TypeInferrer.new(@index)
end
def test_infer_receiver_type_self_inside_method
node_context = index_and_locate(<<~RUBY, { line: 2, character: 4 })
class Foo
def bar
baz
end
end
RUBY
assert_equal("Foo", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_self_inside_class_body
node_context = index_and_locate(<<~RUBY, { line: 1, character: 2 })
class Foo
baz
end
RUBY
assert_equal("Foo::<Class:Foo>", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_self_inside_singleton_method
node_context = index_and_locate(<<~RUBY, { line: 2, character: 4 })
class Foo
def self.bar
baz
end
end
RUBY
assert_equal("Foo::<Class:Foo>", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_self_inside_singleton_block_body
node_context = index_and_locate(<<~RUBY, { line: 2, character: 4 })
class Foo
class << self
baz
end
end
RUBY
assert_equal("Foo::<Class:Foo>::<Class:<Class:Foo>>", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_self_inside_singleton_block_method
node_context = index_and_locate(<<~RUBY, { line: 3, character: 6 })
class Foo
class << self
def bar
baz
end
end
end
RUBY
assert_equal("Foo::<Class:Foo>", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_constant
node_context = index_and_locate(<<~RUBY, { line: 4, character: 4 })
class Foo
def bar; end
end
Foo.bar
RUBY
assert_equal("Foo::<Class:Foo>", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_constant_path
node_context = index_and_locate(<<~RUBY, { line: 6, character: 9 })
module Foo
class Bar
def baz; end
end
end
Foo::Bar.baz
RUBY
assert_equal("Foo::Bar::<Class:Bar>", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_top_level_receiver
node_context = index_and_locate(<<~RUBY, { line: 0, character: 0 })
foo
RUBY
assert_equal("Object", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_instance_variables_in_class_body
node_context = index_and_locate(<<~RUBY, { line: 1, character: 2 })
class Foo
@hello1
end
RUBY
assert_equal("Foo::<Class:Foo>", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_instance_variables_in_singleton_method
node_context = index_and_locate(<<~RUBY, { line: 2, character: 4 })
class Foo
def self.bar
@hello1
end
end
RUBY
assert_equal("Foo::<Class:Foo>", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_instance_variables_in_singleton_block_body
node_context = index_and_locate(<<~RUBY, { line: 2, character: 4 })
class Foo
class << self
@hello1
end
end
RUBY
assert_equal("Foo::<Class:Foo>::<Class:<Class:Foo>>", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_in_namespaced_singleton_method
node_context = index_and_locate(<<~RUBY, { line: 2, character: 4 })
class Foo::Bar
def self.foo
bar
end
end
RUBY
result = @type_inferrer.infer_receiver_type(node_context).name
assert_equal("Foo::Bar::<Class:Bar>", result)
end
def test_infer_receiver_type_instance_variables_in_singleton_block_method
node_context = index_and_locate(<<~RUBY, { line: 3, character: 6 })
class Foo
class << self
def bar
@hello1
end
end
end
RUBY
assert_equal("Foo::<Class:Foo>", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_instance_variables_in_instance_method
node_context = index_and_locate(<<~RUBY, { line: 2, character: 4 })
class Foo
def bar
@hello1
end
end
RUBY
assert_equal("Foo", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_top_level_instance_variables
node_context = index_and_locate(<<~RUBY, { line: 0, character: 0 })
@foo
RUBY
assert_equal("Object", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_guessed_types_for_local_variable_receiver
node_context = index_and_locate(<<~RUBY, { line: 4, character: 5 })
class User
end
user = something
user.name
RUBY
assert_equal("User", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_guessed_types_for_chained_method_calls
node_context = index_and_locate(<<~RUBY, { line: 3, character: 15 })
class User
end
something.user.name
RUBY
assert_equal("User", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_guessed_types_for_instance_variable_receiver
node_context = index_and_locate(<<~RUBY, { line: 4, character: 6 })
class User
end
@user = something
@user.name
RUBY
assert_equal("User", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_guessed_types_for_method_call_receiver
node_context = index_and_locate(<<~RUBY, { line: 3, character: 5 })
class User
end
user.name
RUBY
assert_equal("User", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_guessed_types_inside_nesting
node_context = index_and_locate(<<~RUBY, { line: 9, character: 9 })
module Blog
class User
end
end
module Admin
class User
end
user.name
end
RUBY
assert_equal("Admin::User", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_forwarding_super_receiver
node_context = index_and_locate(<<~RUBY, { line: 2, character: 4 })
class Foo < Bar
def initialize
super
end
end
RUBY
assert_equal("Foo", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_super_receiver
node_context = index_and_locate(<<~RUBY, { line: 2, character: 4 })
class Foo < Bar
def initialize(a, b, c)
super()
end
end
RUBY
assert_equal("Foo", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_string_literal
node_context = index_and_locate(<<~RUBY, { line: 0, character: 3 })
"".upcase
RUBY
assert_equal("String", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_symbol_literal
node_context = index_and_locate(<<~RUBY, { line: 0, character: 5 })
:foo.to_s
RUBY
assert_equal("Symbol", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_array_literal
node_context = index_and_locate(<<~RUBY, { line: 0, character: 3 })
[].first
RUBY
assert_equal("Array", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_hash_literal
node_context = index_and_locate(<<~RUBY, { line: 0, character: 3 })
{}.keys
RUBY
assert_equal("Hash", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_integer_literal
node_context = index_and_locate(<<~RUBY, { line: 0, character: 3 })
10.to_s
RUBY
assert_equal("Integer", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_float_literal
node_context = index_and_locate(<<~RUBY, { line: 0, character: 4 })
1.5.to_s
RUBY
assert_equal("Float", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_regexp_literal
node_context = index_and_locate(<<~RUBY, { line: 0, character: 5 })
/abc/.match("abc")
RUBY
assert_equal("Regexp", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_nil_literal
node_context = index_and_locate(<<~RUBY, { line: 0, character: 4 })
nil.to_s
RUBY
assert_equal("NilClass", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_true_literal
node_context = index_and_locate(<<~RUBY, { line: 0, character: 5 })
true.to_s
RUBY
assert_equal("TrueClass", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_false_literal
node_context = index_and_locate(<<~RUBY, { line: 0, character: 6 })
false.to_s
RUBY
assert_equal("FalseClass", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_range_literal
node_context = index_and_locate(<<~RUBY, { line: 0, character: 8 })
(5..10).to_a
RUBY
assert_equal("Range", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_lambda_literal
node_context = index_and_locate(<<~RUBY, { line: 0, character: 5 })
->{}.call
RUBY
assert_equal("Proc", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_self_type_for_compact_namespace
node_context = index_and_locate(<<~RUBY, { line: 1, character: 3 })
class Admin::User
validates
end
RUBY
assert_equal("Admin::User::<Class:User>", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_self_type_for_compact_namespace_inside_method
node_context = index_and_locate(<<~RUBY, { line: 2, character: 4 })
class Admin::User
def foo
hello
end
end
RUBY
assert_equal("Admin::User", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_self_type_for_compact_namespace_inside_singleton_method
node_context = index_and_locate(<<~RUBY, { line: 2, character: 4 })
class Admin::User
def self.foo
hello
end
end
RUBY
assert_equal("Admin::User::<Class:User>", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_class_variables_in_class_body
node_context = index_and_locate(<<~RUBY, { line: 1, character: 2 })
class Foo
@@hello1
end
RUBY
assert_equal("Foo", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_class_variables_in_singleton_method
node_context = index_and_locate(<<~RUBY, { line: 2, character: 4 })
class Foo
def self.bar
@@hello1
end
end
RUBY
assert_equal("Foo", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_class_variables_in_singleton_block_body
node_context = index_and_locate(<<~RUBY, { line: 2, character: 4 })
class Foo
class << self
@@hello1
end
end
RUBY
assert_equal("Foo", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_class_variables_in_singleton_block_method
node_context = index_and_locate(<<~RUBY, { line: 3, character: 6 })
class Foo
class << self
def bar
@@hello1
end
end
end
RUBY
assert_equal("Foo", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_receiver_type_class_variables_in_instance_method
node_context = index_and_locate(<<~RUBY, { line: 2, character: 4 })
class Foo
def bar
@@hello1
end
end
RUBY
assert_equal("Foo", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_top_level_class_variables
node_context = index_and_locate(<<~RUBY, { line: 0, character: 0 })
@@foo
RUBY
assert_equal("Object", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_object_instantiation_receiver
node_context = index_and_locate(<<~RUBY, { line: 1, character: 8 })
class Foo; end
Foo.new.bar
RUBY
assert_equal("Foo", @type_inferrer.infer_receiver_type(node_context).name)
end
def test_infer_object_instantiation_receiver_is_ignored_if_new_is_overridden
node_context = index_and_locate(<<~RUBY, { line: 8, character: 8 })
module Bar
def new; end
end
class Foo
extend Bar
end
Foo.new.bar
RUBY
assert_nil(@type_inferrer.infer_receiver_type(node_context))
end
private
def index_and_locate(source, position)
@index.index_single(URI::Generic.from_path(path: "/fake/path/foo.rb"), source)
document = RubyLsp::RubyDocument.new(
source: source,
version: 1,
uri: URI::Generic.build(scheme: "file", path: "/fake/path/foo.rb"),
global_state: RubyLsp::GlobalState.new,
)
document.locate_node(position)
end
end
end
|
