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require 'test/unit'
require_relative 'envutil'
class TestSyntax < Test::Unit::TestCase
def assert_valid_syntax(code, fname, mesg = fname)
code = code.dup.force_encoding("ascii-8bit")
code.sub!(/\A(?:\xef\xbb\xbf)?(\s*\#.*$)*(\n)?/n) {
"#$&#{"\n" if $1 && !$2}BEGIN{throw tag, :ok}\n"
}
code.force_encoding("us-ascii")
verbose, $VERBOSE = $VERBOSE, nil
yield if defined?(yield)
assert_nothing_raised(SyntaxError, mesg) do
assert_equal(:ok, catch {|tag| eval(code, binding, fname, 0)}, mesg)
end
ensure
$VERBOSE = verbose
end
def test_syntax
assert_nothing_raised(Exception) do
for script in Dir[File.expand_path("../../../{lib,sample,ext,test}/**/*.rb", __FILE__)].sort
assert_valid_syntax(IO::read(script), script)
end
end
end
def test_must_ascii_compatible
require 'tempfile'
f = Tempfile.new("must_ac_")
Encoding.list.each do |enc|
next unless enc.ascii_compatible?
make_tmpsrc(f, "# -*- coding: #{enc.name} -*-")
assert_nothing_raised(ArgumentError, enc.name) {load(f.path)}
end
Encoding.list.each do |enc|
next if enc.ascii_compatible?
make_tmpsrc(f, "# -*- coding: #{enc.name} -*-")
assert_raise(ArgumentError, enc.name) {load(f.path)}
end
f.close!
end
def test_script_lines
require 'tempfile'
f = Tempfile.new("bug4361_")
bug4361 = '[ruby-dev:43168]'
with_script_lines do |debug_lines|
Encoding.list.each do |enc|
next unless enc.ascii_compatible?
make_tmpsrc(f, "# -*- coding: #{enc.name} -*-\n#----------------")
load(f.path)
assert_equal([f.path], debug_lines.keys)
assert_equal([enc, enc], debug_lines[f.path].map(&:encoding), bug4361)
end
end
f.close!
end
def test_newline_in_block_parameters
bug = '[ruby-dev:45292]'
["", "a", "a, b"].product(["", ";x", [";", "x"]]) do |params|
params = ["|", *params, "|"].join("\n")
assert_valid_syntax("1.times{#{params}}", __FILE__, "#{bug} #{params.inspect}")
end
end
tap do |_,
bug6115 = '[ruby-dev:45308]',
blockcall = '["elem"].each_with_object [] do end',
methods = [['map', 'no'], ['inject([])', 'with']],
blocks = [['do end', 'do'], ['{}', 'brace']],
*|
[%w'. dot', %w':: colon'].product(methods, blocks) do |(c, n1), (m, n2), (b, n3)|
m = m.tr_s('()', ' ').strip if n2 == 'do'
name = "test_#{n3}_block_after_blockcall_#{n1}_#{n2}_arg"
code = "#{blockcall}#{c}#{m} #{b}"
define_method(name) {assert_valid_syntax(code, bug6115)}
end
end
def test_keyword_rest
bug5989 = '[ruby-core:42455]'
assert_valid_syntax("def kwrest_test(**a) a; end", __FILE__, bug5989)
assert_valid_syntax("def kwrest_test2(**a, &b) end", __FILE__, bug5989)
o = Object.new
def o.kw(**a) a end
assert_equal({}, o.kw, bug5989)
assert_equal({foo: 1}, o.kw(foo: 1), bug5989)
assert_equal({foo: 1, bar: 2}, o.kw(foo: 1, bar: 2), bug5989)
EnvUtil.under_gc_stress do
eval("def o.m(k: 0) k end")
end
assert_equal(42, o.m(k: 42), '[ruby-core:45744]')
end
def test_keyword_splat
assert_valid_syntax("foo(**h)", __FILE__)
o = Object.new
def o.kw(k1: 1, k2: 2) [k1, k2] end
h = {k1: 11, k2: 12}
assert_equal([11, 12], o.kw(**h))
assert_equal([11, 22], o.kw(k2: 22, **h))
assert_equal([11, 12], o.kw(**h, **{k2: 22}))
assert_equal([11, 22], o.kw(**{k2: 22}, **h))
h = {k3: 31}
assert_raise(ArgumentError) {o.kw(**h)}
h = {"k1"=>11, k2: 12}
assert_raise(TypeError) {o.kw(**h)}
end
def test_warn_grouped_expression
bug5214 = '[ruby-core:39050]'
assert_warning("", bug5214) do
assert_valid_syntax("foo \\\n(\n true)", "test") {$VERBOSE = true}
end
end
def test_warn_unreachable
assert_warning("test:3: warning: statement not reached\n") do
code = "loop do\n" "break\n" "foo\n" "end"
assert_valid_syntax(code, "test") {$VERBOSE = true}
end
end
def test_cmd_symbol_after_keyword
bug6347 = '[ruby-dev:45563]'
assert_not_label(:foo, 'if true then not_label:foo end', bug6347)
assert_not_label(:foo, 'if false; else not_label:foo end', bug6347)
assert_not_label(:foo, 'begin not_label:foo end', bug6347)
assert_not_label(:foo, 'begin ensure not_label:foo end', bug6347)
end
def test_cmd_symbol_in_string
bug6347 = '[ruby-dev:45563]'
assert_not_label(:foo, '"#{not_label:foo}"', bug6347)
end
def test_cmd_symbol_singleton_class
bug6347 = '[ruby-dev:45563]'
@not_label = self
assert_not_label(:foo, 'class << not_label:foo; end', bug6347)
end
def test_cmd_symbol_superclass
bug6347 = '[ruby-dev:45563]'
@not_label = Object
assert_not_label(:foo, 'class Foo < not_label:foo; end', bug6347)
end
def test_duplicated_when
w = 'warning: duplicated when clause is ignored'
assert_warning(/3: #{w}.+4: #{w}.+4: #{w}.+5: #{w}.+5: #{w}/m){
eval %q{
case 1
when 1, 1
when 1, 1
when 1, 1
end
}
}
assert_warning(/#{w}/){#/3: #{w}.+4: #{w}.+5: #{w}.+5: #{w}/m){
a = 1
eval %q{
case 1
when 1, 1
when 1, a
when 1, 1
end
}
}
end
def test_lambda_with_space
feature6390 = '[ruby-dev:45605]'
assert_valid_syntax("-> (x, y) {}", __FILE__, feature6390)
end
def test_do_block_in_cmdarg_begin
bug6419 = '[ruby-dev:45631]'
assert_valid_syntax("p begin 1.times do 1 end end", __FILE__, bug6419)
end
def test_reserved_method_no_args
bug6403 = '[ruby-dev:45626]'
assert_valid_syntax("def self; :foo; end", __FILE__, bug6403)
end
def test_unassignable
gvar = global_variables
%w[self nil true false __FILE__ __LINE__ __ENCODING__].each do |kwd|
assert_raise(SyntaxError) {eval("#{kwd} = nil")}
assert_equal(gvar, global_variables)
end
end
private
def not_label(x) @result = x; @not_label ||= nil end
def assert_not_label(expected, src, message = nil)
@result = nil
assert_nothing_raised(SyntaxError, message) {eval(src)}
assert_equal(expected, @result, message)
end
def make_tmpsrc(f, src)
f.open
f.truncate(0)
f.puts(src)
f.close
end
def with_script_lines
script_lines = nil
debug_lines = {}
Object.class_eval do
if defined?(SCRIPT_LINES__)
script_lines = SCRIPT_LINES__
remove_const :SCRIPT_LINES__
end
const_set(:SCRIPT_LINES__, debug_lines)
end
yield debug_lines
ensure
Object.class_eval do
remove_const :SCRIPT_LINES__
const_set(:SCRIPT_LINES__, script_lines) if script_lines
end
end
end
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