mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
b9fe5948f3
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55109 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
408 lines
10 KiB
Ruby
408 lines
10 KiB
Ruby
# frozen_string_literal: false
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require 'test/unit'
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require 'objspace'
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class TestRubyOptimization < Test::Unit::TestCase
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def assert_redefine_method(klass, method, code, msg = nil)
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assert_separately([], <<-"end;")# do
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class #{klass}
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undef #{method}
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def #{method}(*args)
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args[0]
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end
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end
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#{code}
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end;
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end
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def disasm(name)
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RubyVM::InstructionSequence.of(method(name)).disasm
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end
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def test_fixnum_plus
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assert_equal 21, 10 + 11
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assert_redefine_method('Integer', '+', 'assert_equal 11, 10 + 11')
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end
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def test_fixnum_minus
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assert_equal 5, 8 - 3
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assert_redefine_method('Integer', '-', 'assert_equal 3, 8 - 3')
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end
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def test_fixnum_mul
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assert_equal 15, 3 * 5
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assert_redefine_method('Integer', '*', 'assert_equal 5, 3 * 5')
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end
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def test_fixnum_div
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assert_equal 3, 15 / 5
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assert_redefine_method('Integer', '/', 'assert_equal 5, 15 / 5')
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end
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def test_fixnum_mod
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assert_equal 1, 8 % 7
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assert_redefine_method('Integer', '%', 'assert_equal 7, 8 % 7')
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end
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def test_float_plus
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assert_equal 4.0, 2.0 + 2.0
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assert_redefine_method('Float', '+', 'assert_equal 2.0, 2.0 + 2.0')
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end
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def test_float_minus
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assert_equal 4.0, 2.0 + 2.0
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assert_redefine_method('Float', '+', 'assert_equal 2.0, 2.0 + 2.0')
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end
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def test_float_mul
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assert_equal 29.25, 4.5 * 6.5
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assert_redefine_method('Float', '*', 'assert_equal 6.5, 4.5 * 6.5')
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end
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def test_float_div
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assert_in_delta 0.63063063063063063, 4.2 / 6.66
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assert_redefine_method('Float', '/', 'assert_equal 6.66, 4.2 / 6.66', "[Bug #9238]")
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end
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def test_string_length
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assert_equal 6, "string".length
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assert_redefine_method('String', 'length', 'assert_nil "string".length')
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end
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def test_string_size
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assert_equal 6, "string".size
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assert_redefine_method('String', 'size', 'assert_nil "string".size')
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end
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def test_string_empty?
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assert_equal true, "".empty?
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assert_equal false, "string".empty?
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assert_redefine_method('String', 'empty?', 'assert_nil "string".empty?')
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end
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def test_string_plus
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assert_equal "", "" + ""
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assert_equal "x", "x" + ""
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assert_equal "x", "" + "x"
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assert_equal "ab", "a" + "b"
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assert_redefine_method('String', '+', 'assert_equal "b", "a" + "b"')
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end
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def test_string_succ
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assert_equal 'b', 'a'.succ
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assert_equal 'B', 'A'.succ
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end
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def test_string_format
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assert_equal '2', '%d' % 2
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assert_redefine_method('String', '%', 'assert_equal 2, "%d" % 2')
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end
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def test_string_freeze
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assert_equal "foo", "foo".freeze
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assert_equal "foo".freeze.object_id, "foo".freeze.object_id
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assert_redefine_method('String', 'freeze', 'assert_nil "foo".freeze')
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end
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def test_string_freeze_saves_memory
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n = 16384
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data = '.'.freeze
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r, w = IO.pipe
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w.write data
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s = r.readpartial(n, '')
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assert_operator ObjectSpace.memsize_of(s), :>=, n,
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'IO buffer NOT resized prematurely because will likely be reused'
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s.freeze
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assert_equal ObjectSpace.memsize_of(data), ObjectSpace.memsize_of(s),
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'buffer resized on freeze since it cannot be written to again'
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ensure
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r.close if r
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w.close if w
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end
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def test_string_eq_neq
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%w(== !=).each do |m|
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assert_redefine_method('String', m, <<-end)
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assert_equal :b, ("a" #{m} "b").to_sym
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b = 'b'
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assert_equal :b, ("a" #{m} b).to_sym
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assert_equal :b, (b #{m} "b").to_sym
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end
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end
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end
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def test_string_ltlt
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assert_equal "", "" << ""
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assert_equal "x", "x" << ""
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assert_equal "x", "" << "x"
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assert_equal "ab", "a" << "b"
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assert_redefine_method('String', '<<', 'assert_equal "b", "a" << "b"')
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end
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def test_array_plus
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assert_equal [1,2], [1]+[2]
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assert_redefine_method('Array', '+', 'assert_equal [2], [1]+[2]')
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end
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def test_array_minus
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assert_equal [2], [1,2] - [1]
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assert_redefine_method('Array', '-', 'assert_equal [1], [1,2]-[1]')
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end
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def test_array_length
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assert_equal 0, [].length
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assert_equal 3, [1,2,3].length
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assert_redefine_method('Array', 'length', 'assert_nil([].length); assert_nil([1,2,3].length)')
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end
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def test_array_empty?
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assert_equal true, [].empty?
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assert_equal false, [1,2,3].empty?
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assert_redefine_method('Array', 'empty?', 'assert_nil([].empty?); assert_nil([1,2,3].empty?)')
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end
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def test_hash_length
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assert_equal 0, {}.length
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assert_equal 1, {1=>1}.length
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assert_redefine_method('Hash', 'length', 'assert_nil({}.length); assert_nil({1=>1}.length)')
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end
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def test_hash_empty?
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assert_equal true, {}.empty?
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assert_equal false, {1=>1}.empty?
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assert_redefine_method('Hash', 'empty?', 'assert_nil({}.empty?); assert_nil({1=>1}.empty?)')
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end
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def test_hash_aref_with
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h = { "foo" => 1 }
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assert_equal 1, h["foo"]
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assert_redefine_method('Hash', '[]', <<-end)
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h = { "foo" => 1 }
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assert_equal "foo", h["foo"]
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end
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end
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def test_hash_aset_with
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h = {}
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assert_equal 1, h["foo"] = 1
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assert_redefine_method('Hash', '[]=', <<-end)
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h = {}
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assert_equal 1, h["foo"] = 1, "assignment always returns value set"
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assert_nil h["foo"]
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end
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end
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class MyObj
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def ==(other)
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true
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end
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end
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def test_eq
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assert_equal true, nil == nil
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assert_equal true, 1 == 1
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assert_equal true, 'string' == 'string'
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assert_equal true, 1 == MyObj.new
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assert_equal false, nil == MyObj.new
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assert_equal true, MyObj.new == 1
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assert_equal true, MyObj.new == nil
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end
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def self.tailcall(klass, src, file = nil, path = nil, line = nil)
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unless file
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loc, = caller_locations(1, 1)
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file = loc.path
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line ||= loc.lineno
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end
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RubyVM::InstructionSequence.new("proc {|_|_.class_eval {#{src}}}",
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file, (path || file), line,
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tailcall_optimization: true,
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trace_instruction: false)
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.eval[klass]
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end
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def tailcall(*args)
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self.class.tailcall(singleton_class, *args)
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end
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def test_tailcall
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bug4082 = '[ruby-core:33289]'
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tailcall(<<-EOF)
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def fact_helper(n, res)
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if n == 1
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res
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else
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fact_helper(n - 1, n * res)
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end
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end
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def fact(n)
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fact_helper(n, 1)
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end
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EOF
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assert_equal(9131, fact(3000).to_s.size, message(bug4082) {disasm(:fact_helper)})
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end
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def test_tailcall_with_block
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bug6901 = '[ruby-dev:46065]'
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tailcall(<<-EOF)
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def identity(val)
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val
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end
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def delay
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-> {
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identity(yield)
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}
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end
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EOF
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assert_equal(123, delay { 123 }.call, message(bug6901) {disasm(:delay)})
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end
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def just_yield
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yield
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end
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def test_tailcall_inhibited_by_block
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tailcall(<<-EOF)
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def yield_result
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just_yield {:ok}
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end
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EOF
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assert_equal(:ok, yield_result, message {disasm(:yield_result)})
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end
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def do_raise
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raise "should be rescued"
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end
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def errinfo
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$!
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end
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def test_tailcall_inhibited_by_rescue
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bug12082 = '[ruby-core:73871] [Bug #12082]'
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tailcall(<<-'end;')
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def to_be_rescued
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return do_raise
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1 + 2
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rescue
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errinfo
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end
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end;
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result = assert_nothing_raised(RuntimeError, message(bug12082) {disasm(:to_be_rescued)}) {
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to_be_rescued
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}
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assert_instance_of(RuntimeError, result, bug12082)
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assert_equal("should be rescued", result.message, bug12082)
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end
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class Bug10557
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def [](_)
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block_given?
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end
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def []=(_, _)
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block_given?
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end
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end
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def test_block_given_aset_aref
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bug10557 = '[ruby-core:66595]'
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assert_equal(true, Bug10557.new.[](nil){}, bug10557)
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assert_equal(true, Bug10557.new.[](0){}, bug10557)
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assert_equal(true, Bug10557.new.[](false){}, bug10557)
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assert_equal(true, Bug10557.new.[](''){}, bug10557)
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assert_equal(true, Bug10557.new.[]=(nil, 1){}, bug10557)
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assert_equal(true, Bug10557.new.[]=(0, 1){}, bug10557)
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assert_equal(true, Bug10557.new.[]=(false, 1){}, bug10557)
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assert_equal(true, Bug10557.new.[]=('', 1){}, bug10557)
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end
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def test_string_freeze_block
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assert_separately([], <<-"end;")# do
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class String
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undef freeze
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def freeze
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block_given?
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end
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end
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assert_equal(true, "block".freeze {})
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assert_equal(false, "block".freeze)
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end;
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end
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def test_opt_case_dispatch
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code = <<-EOF
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case foo
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when "foo" then :foo
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when true then true
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when false then false
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when :sym then :sym
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when 6 then :fix
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when nil then nil
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when 0.1 then :float
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when 0xffffffffffffffff then :big
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else
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:nomatch
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end
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EOF
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check = {
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'foo' => :foo,
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true => true,
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false => false,
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:sym => :sym,
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6 => :fix,
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nil => nil,
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0.1 => :float,
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0xffffffffffffffff => :big,
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}
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iseq = RubyVM::InstructionSequence.compile(code)
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assert_match %r{\bopt_case_dispatch\b}, iseq.disasm
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check.each do |foo, expect|
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assert_equal expect, eval("foo = #{foo.inspect}\n#{code}")
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end
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assert_equal :nomatch, eval("foo = :blah\n#{code}")
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check.each do |foo, _|
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klass = foo.class.to_s
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assert_separately([], <<-"end;") # do
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class #{klass}
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undef ===
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def ===(*args)
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false
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end
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end
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foo = #{foo.inspect}
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ret = #{code}
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assert_equal :nomatch, ret, foo.inspect
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end;
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end
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end
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def test_eqq
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[ nil, true, false, 0.1, :sym, 'str', 0xffffffffffffffff ].each do |v|
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k = v.class.to_s
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assert_redefine_method(k, '===', "assert_equal(#{v.inspect} === 0, 0)")
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end
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end
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def test_opt_case_dispatch_inf
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inf = 1.0/0.0
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result = case inf
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when 1 then 1
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when 0 then 0
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else
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inf.to_i rescue nil
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end
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assert_nil result, '[ruby-dev:49423] [Bug #11804]'
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end
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def test_nil_safe_conditional_assign
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bug11816 = '[ruby-core:74993] [Bug #11816]'
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assert_ruby_status([], 'nil&.foo &&= false', bug11816)
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end
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end
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