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require 'test/unit'
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)
RubyVM::InstructionSequence.new(src, __FILE__, __FILE__, line, opt)
end
def lines src
body = compile(src).to_a[13]
body.find_all{|e| e.kind_of? Fixnum}
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 = RubyVM::InstructionSequence.compile("p").to_a
ary[9] = :foobar
assert_raise_with_message(TypeError, /:foobar/) {RubyVM::InstructionSequence.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 = 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) {ISeq.compile(nil)}
assert_raise(TypeError, bug11159) {ISeq.compile(:foo)}
assert_raise(TypeError, bug11159) {ISeq.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
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
end
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