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# Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import os
from subprocess import CalledProcessError, PIPE, Popen
import sys
import time
from util import build_path, executable_suffix, green_ok
class Repl(object):
def __init__(self, deno_exe):
self.deno_exe = deno_exe
self._warm_up()
def _warm_up(self):
# This may output an error message about the history file (ignore it).
self.input("")
def input(self, *lines, **kwargs):
exit_ = kwargs.pop("exit", True)
sleep_ = kwargs.pop("sleep", 0)
p = Popen([self.deno_exe, "-A"], stdout=PIPE, stderr=PIPE, stdin=PIPE)
try:
# Note: The repl takes a >100ms until it's ready.
time.sleep(sleep_)
for line in lines:
p.stdin.write(line.encode("utf-8") + b'\n')
p.stdin.flush()
time.sleep(sleep_)
if exit_:
p.stdin.write(b'Deno.exit(0)\n')
else:
time.sleep(1) # wait to be killed by js
out, err = p.communicate()
except CalledProcessError as e:
p.kill()
p.wait()
raise e
retcode = p.poll()
# Ignore Windows CRLF (\r\n).
return out.replace('\r\n', '\n'), err.replace('\r\n', '\n'), retcode
def run(self):
print('repl_test.py')
test_names = [name for name in dir(self) if name.startswith("test_")]
for t in test_names:
self.__getattribute__(t)()
sys.stdout.write(".")
sys.stdout.flush()
print(' {}\n'.format(green_ok()))
def test_console_log(self):
out, err, code = self.input("console.log('hello')", "'world'")
assertEqual(out, 'hello\nundefined\nworld\n')
assertEqual(err, '')
assertEqual(code, 0)
def test_exit_command(self):
out, err, code = self.input("exit", "'ignored'", exit=False)
assertEqual(out, '')
assertEqual(err, '')
assertEqual(code, 0)
def test_help_command(self):
out, err, code = self.input("help")
expectedOut = '\n'.join([
"exit Exit the REPL",
"help Print this help message",
"",
])
assertEqual(out, expectedOut)
assertEqual(err, '')
assertEqual(code, 0)
def test_function(self):
out, err, code = self.input("Deno.writeFileSync")
assertEqual(out, '[Function: writeFileSync]\n')
assertEqual(err, '')
assertEqual(code, 0)
def test_multiline(self):
out, err, code = self.input("(\n1 + 2\n)")
assertEqual(out, '3\n')
assertEqual(err, '')
assertEqual(code, 0)
# This should print error instead of wait for input
def test_eval_unterminated(self):
out, err, code = self.input("eval('{')")
assertEqual(out, '')
assert "Unexpected end of input" in err
assertEqual(code, 0)
def test_reference_error(self):
out, err, code = self.input("not_a_variable")
assertEqual(out, '')
assert "not_a_variable is not defined" in err
assertEqual(code, 0)
# def test_set_timeout(self):
# out, err, code = self.input(
# "setTimeout(() => { console.log('b'); Deno.exit(0); }, 1)",
# "'a'",
# exit=False)
# assertEqual(out, '1\na\nb\n')
# assertEqual(err, '')
# assertEqual(code, 0)
# def test_set_timeout_interlaced(self):
# out, err, code = self.input(
# "setTimeout(() => console.log('a'), 1)",
# "setTimeout(() => console.log('b'), 6)",
# sleep=0.8)
# assertEqual(out, '1\n2\na\nb\n')
# assertEqual(err, '')
# assertEqual(code, 0)
# def test_async_op(self):
# out, err, code = self.input(
# "fetch('http://localhost:4545/tests/001_hello.js')" +
# ".then(res => res.text()).then(console.log)",
# sleep=1)
# assertEqual(out, 'Promise {}\nconsole.log("Hello World");\n\n')
# assertEqual(err, '')
# assertEqual(code, 0)
def test_syntax_error(self):
out, err, code = self.input("syntax error")
assertEqual(out, '')
assert "Unexpected identifier" in err
assertEqual(code, 0)
def test_type_error(self):
out, err, code = self.input("console()")
assertEqual(out, '')
assert "console is not a function" in err
assertEqual(code, 0)
def test_variable(self):
out, err, code = self.input("var a = 123;", "a")
assertEqual(out, 'undefined\n123\n')
assertEqual(err, '')
assertEqual(code, 0)
def test_lexical_scoped_variable(self):
out, err, code = self.input("let a = 123;", "a")
assertEqual(out, 'undefined\n123\n')
assertEqual(err, '')
assertEqual(code, 0)
def assertEqual(left, right):
if left != right:
raise AssertionError("{} != {}".format(repr(left), repr(right)))
def repl_tests(deno_exe):
Repl(deno_exe).run()
def main():
deno_exe = os.path.join(build_path(), "deno" + executable_suffix)
repl_tests(deno_exe)
if __name__ == "__main__":
main()
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