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a6b7aad954
[Bug #20322] Fix rb_enc_interned_str_cstr null encoding The documentation for `rb_enc_interned_str_cstr` notes that `enc` can be a null pointer, but this currently causes a segmentation fault when trying to autoload the encoding. This commit fixes the issue by checking for NULL before calling `rb_enc_autoload`.
69 lines
1.7 KiB
Ruby
69 lines
1.7 KiB
Ruby
# frozen_string_literal: false
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require 'test/unit'
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require '-test-/string'
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require_relative '../symbol/noninterned_name'
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class Test_String_Fstring < Test::Unit::TestCase
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include Test_Symbol::NonInterned
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def assert_fstring(str)
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fstr = Bug::String.fstring(str)
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yield str
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yield fstr
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end
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def test_rb_enc_interned_str_autoloaded_encoding
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assert_separately([], <<~RUBY)
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require '-test-/string'
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assert_include(Encoding::Windows_31J.inspect, 'autoload')
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Bug::String.rb_enc_interned_str(Encoding::Windows_31J)
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RUBY
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end
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def test_rb_enc_interned_str_null_encoding
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assert_equal Encoding::ASCII_8BIT, Bug::String.rb_enc_interned_str(nil).encoding
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end
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def test_rb_enc_str_new_autoloaded_encoding
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assert_separately([], <<~RUBY)
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require '-test-/string'
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assert_include(Encoding::Windows_31J.inspect, 'autoload')
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Bug::String.rb_enc_str_new(Encoding::Windows_31J)
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RUBY
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end
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def test_rb_enc_str_new_null_encoding
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assert_equal Encoding::ASCII_8BIT, Bug::String.rb_enc_str_new(nil).encoding
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end
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def test_instance_variable
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str = __method__.to_s * 3
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str.instance_variable_set(:@test, 42)
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str.freeze
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assert_fstring(str) {|s| assert_send([s, :instance_variable_defined?, :@test])}
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end
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def test_singleton_method
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str = __method__.to_s * 3
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def str.foo
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end
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str.freeze
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assert_fstring(str) {|s| assert_send([s, :respond_to?, :foo])}
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end
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def test_singleton_class
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str = noninterned_name
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fstr = Bug::String.fstring(str)
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assert_raise(TypeError) {fstr.singleton_class}
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end
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class S < String
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end
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def test_subclass
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str = S.new(__method__.to_s * 3)
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str.freeze
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assert_fstring(str) {|s| assert_instance_of(S, s)}
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end
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end
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