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require 'test/unit'
require 'tempfile'
class TestISeq < Test::Unit::TestCase
ISeq = RubyVM::InstructionSequence
def test_no_linenum
bug5894 = '[ruby-dev:45130]'
assert_normal_exit('p RubyVM::InstructionSequence.compile("1", "mac", "", 0).to_a', bug5894)
end
def compile(src, line = nil, opt = nil)
EnvUtil.suppress_warning do
ISeq.new(src, __FILE__, __FILE__, line, opt)
end
end
def lines src
body = compile(src).to_a[13]
body.find_all{|e| e.kind_of? Integer}
end
def test_allocate
assert_raise(TypeError) {ISeq.allocate}
end
def test_to_a_lines
src = <<-EOS
p __LINE__ # 1
p __LINE__ # 2
# 3
p __LINE__ # 4
EOS
assert_equal [1, 2, 4], lines(src)
src = <<-EOS
# 1
p __LINE__ # 2
# 3
p __LINE__ # 4
# 5
EOS
assert_equal [2, 4], lines(src)
src = <<-EOS
1 # should be optimized out
2 # should be optimized out
p __LINE__ # 3
p __LINE__ # 4
5 # should be optimized out
6 # should be optimized out
p __LINE__ # 7
8 # should be optimized out
9
EOS
assert_equal [3, 4, 7, 9], lines(src)
end
def test_unsupport_type
ary = compile("p").to_a
ary[9] = :foobar
assert_raise_with_message(TypeError, /:foobar/) {ISeq.load(ary)}
end if defined?(RubyVM::InstructionSequence.load)
def test_loaded_cdhash_mark
iseq = compile(<<-'end;', __LINE__+1)
def bug(kw)
case kw
when "false" then false
when "true" then true
when "nil" then nil
else raise("unhandled argument: #{kw.inspect}")
end
end
end;
assert_separately([], <<-"end;")
iseq = #{iseq.to_a.inspect}
RubyVM::InstructionSequence.load(iseq).eval
assert_equal(false, bug("false"))
GC.start
assert_equal(false, bug("false"))
end;
end if defined?(RubyVM::InstructionSequence.load)
def test_disasm_encoding
src = "\u{3042} = 1; \u{3042}; \u{3043}"
asm = compile(src).disasm
assert_equal(src.encoding, asm.encoding)
assert_predicate(asm, :valid_encoding?)
src.encode!(Encoding::Shift_JIS)
asm = compile(src).disasm
assert_equal(src.encoding, asm.encoding)
assert_predicate(asm, :valid_encoding?)
end
LINE_BEFORE_METHOD = __LINE__
def method_test_line_trace
_a = 1
_b = 2
end
def test_line_trace
iseq = compile \
%q{ a = 1
b = 2
c = 3
# d = 4
e = 5
# f = 6
g = 7
}
assert_equal([1, 2, 3, 5, 7], iseq.line_trace_all)
iseq.line_trace_specify(1, true) # line 2
iseq.line_trace_specify(3, true) # line 5
result = []
TracePoint.new(:specified_line){|tp|
result << tp.lineno
}.enable{
iseq.eval
}
assert_equal([2, 5], result)
iseq = ISeq.of(self.class.instance_method(:method_test_line_trace))
assert_equal([LINE_BEFORE_METHOD + 3, LINE_BEFORE_METHOD + 5], iseq.line_trace_all)
end if false # TODO: now, it is only for C APIs.
LINE_OF_HERE = __LINE__
def test_location
iseq = ISeq.of(method(:test_location))
assert_equal(__FILE__, iseq.path)
assert_match(/#{__FILE__}/, iseq.absolute_path)
assert_equal("test_location", iseq.label)
assert_equal("test_location", iseq.base_label)
assert_equal(LINE_OF_HERE+1, iseq.first_lineno)
line = __LINE__
iseq = ISeq.of(Proc.new{})
assert_equal(__FILE__, iseq.path)
assert_match(/#{__FILE__}/, iseq.absolute_path)
assert_equal("test_location", iseq.base_label)
assert_equal("block in test_location", iseq.label)
assert_equal(line+1, iseq.first_lineno)
end
def test_label_fstring
c = Class.new{ def foobar() end }
a, b = eval("# encoding: us-ascii\n'foobar'.freeze"),
ISeq.of(c.instance_method(:foobar)).label
assert_same a, b
end
def test_disable_opt
src = "a['foo'] = a['bar']; 'a'.freeze"
body= compile(src, __LINE__, false).to_a[13]
body.each{|insn|
next unless Array === insn
op = insn.first
assert(!op.to_s.match(/^opt_/), "#{op}")
}
end
def test_invalid_source
bug11159 = '[ruby-core:69219] [Bug #11159]'
assert_raise(TypeError, bug11159) {compile(nil)}
assert_raise(TypeError, bug11159) {compile(:foo)}
assert_raise(TypeError, bug11159) {compile(1)}
end
def test_frozen_string_literal_compile_option
$f = 'f'
line = __LINE__ + 2
code = <<-'EOS'
['foo', 'foo', "#{$f}foo", "#{'foo'}"]
EOS
s1, s2, s3, s4 = compile(code, line, {frozen_string_literal: true}).eval
assert_predicate(s1, :frozen?)
assert_predicate(s2, :frozen?)
assert_predicate(s3, :frozen?)
assert_predicate(s4, :frozen?)
end
# Safe call chain is not optimized when Coverage is running.
# So we can test it only when Coverage is not running.
def test_safe_call_chain
src = "a&.a&.a&.a&.a&.a"
body = compile(src, __LINE__, {peephole_optimization: true}).to_a[13]
labels = body.select {|op, arg| op == :branchnil}.map {|op, arg| arg}
assert_equal(1, labels.uniq.size)
end if (!defined?(Coverage) || !Coverage.running?)
def test_parent_iseq_mark
assert_separately([], <<-'end;', timeout: 20)
->{
->{
->{
eval <<-EOS
class Segfault
define_method :segfault do
x = nil
GC.disable
1000.times do |n|
n.times do
x = (foo rescue $!).local_variables
end
GC.start
end
x
end
end
EOS
}.call
}.call
}.call
at_exit { assert_equal([:n, :x], Segfault.new.segfault.sort) }
end;
end
def test_syntax_error_message
feature11951 = '[Feature #11951]'
src, line = <<-'end;', __LINE__+1
def x@;end
def y@;end
end;
e1 = e2 = nil
m1 = EnvUtil.verbose_warning do
e1 = assert_raise(SyntaxError) do
eval(src, nil, __FILE__, line)
end
end
m2 = EnvUtil.verbose_warning do
e2 = assert_raise(SyntaxError) do
ISeq.new(src, __FILE__, __FILE__, line)
end
end
assert_equal([m1, e1.message], [m2, e2.message], feature11951)
e1, e2 = e1.message.lines
assert_send([e1, :start_with?, __FILE__])
assert_send([e2, :start_with?, __FILE__])
end
def test_compile_file_error
Tempfile.create(%w"test_iseq .rb") do |f|
f.puts "end"
f.close
path = f.path
assert_in_out_err(%W[- #{path}], "#{<<-"begin;"}\n#{<<-"end;"}", /keyword_end/, [], success: true)
begin;
path = ARGV[0]
begin
RubyVM::InstructionSequence.compile_file(path)
rescue SyntaxError => e
puts e.message
end
end;
end
end
def test_translate_by_object
assert_separately([], <<-"end;")
class Object
def translate
end
end
assert_equal(0, eval("0"))
end;
end
def test_inspect
%W[foo \u{30d1 30b9}].each do |name|
assert_match /@#{name}/, ISeq.compile("", name).inspect, name
m = ISeq.compile("class TestISeq::Inspect; def #{name}; end; instance_method(:#{name}); end").eval
assert_match /:#{name}@/, ISeq.of(m).inspect, name
end
end
def sample_iseq
ISeq.compile <<-EOS.gsub(/^.*?: /, "")
1: class C
2: def foo
3: begin
4: rescue
5: p :rescue
6: ensure
7: p :ensure
8: end
9: end
10: def bar
11: 1.times{
12: 2.times{
13: }
14: }
15: end
16: end
17: class D < C
18: end
EOS
end
def test_each_child
iseq = sample_iseq
collect_iseq = lambda{|iseq|
iseqs = []
iseq.each_child{|child_iseq|
iseqs << collect_iseq.call(child_iseq)
}
["#{iseq.label}@#{iseq.first_lineno}", *iseqs.sort_by{|k, *| k}]
}
expected = ["<compiled>@1",
["<class:C>@1",
["bar@10", ["block in bar@11",
["block (2 levels) in bar@12"]]],
["foo@2", ["ensure in foo@2"],
["rescue in foo@4"]]],
["<class:D>@17"]]
assert_equal expected, collect_iseq.call(iseq)
end
def test_trace_points
collect_iseq = lambda{|iseq|
iseqs = []
iseq.each_child{|child_iseq|
iseqs << collect_iseq.call(child_iseq)
}
[["#{iseq.label}@#{iseq.first_lineno}", iseq.trace_points], *iseqs.sort_by{|k, *| k}]
}
assert_equal [["<compiled>@1", [[1, :line],
[17, :line]]],
[["<class:C>@1", [[1, :class],
[2, :line],
[10, :line],
[16, :end]]],
[["bar@10", [[10, :call],
[11, :line],
[15, :return]]],
[["block in bar@11", [[11, :b_call],
[12, :line],
[14, :b_return]]],
[["block (2 levels) in bar@12", [[12, :b_call],
[13, :b_return]]]]]],
[["foo@2", [[2, :call],
[4, :line],
[7, :line],
[9, :return]]],
[["ensure in foo@2", [[7, :line]]]],
[["rescue in foo@4", [[5, :line]]]]]],
[["<class:D>@17", [[17, :class],
[18, :end]]]]], collect_iseq.call(sample_iseq)
end
def test_empty_iseq_lineno
iseq = ISeq.compile(<<-EOS)
# 1
# 2
def foo # line 3 empty method
end # line 4
1.time do # line 5 empty block
end # line 6
class C # line 7 empty class
end
EOS
iseq.each_child{|ci|
ary = ci.to_a
type = ary[9]
name = ary[5]
line = ary[13].first
case ary[9]
when :method
assert_equal "foo", name
assert_equal 3, line
when :class
assert_equal '<class:C>', name
assert_equal 7, line
when :block
assert_equal 'block in <compiled>', name
assert_equal 5, line
else
raise "unknown ary: " + ary.inspect
end
}
end
end
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