run-tests: Use PTY when running REPL tests.

tests/cmdline/repl_cont.py.exp

 Micro Python \.\+ linux version
 >>> # check REPL allows to continue input
->>> 1 \
+>>> 1 \\\\
 ... + 2
 3
 >>> 'abc'
@@ -9,10 +9,10 @@ Micro Python \.\+ linux version
 'abc'
 >>> '''abc
 ... def'''
-'abc\ndef'
+'abc\\\\ndef'
 >>> """ABC
 ... DEF"""
-'ABC\nDEF'
+'ABC\\\\nDEF'
 >>> print(
 ... 1 + 2)
 3

tests/run-tests

@@ -42,9 +42,33 @@ def run_micropython(pyb, args, test_file):
             # run the test, possibly with redirected input
             try:
                 if test_file.startswith('cmdline/repl_'):
-                    f = open(test_file, 'rb')
-                    output_mupy = subprocess.check_output(args, stdin=f)
-                    f.close()
+                    # Need to use a PTY to test command line editing
+                    import pty
+                    import select
+
+                    def get():
+                        rv = b''
+                        while True:
+                            ready = select.select([master], [], [], 0.02)
+                            if ready[0] == [master]:
+                                rv += os.read(master, 1024)
+                            else:
+                                return rv
+
+                    def send_get(what):
+                        os.write(master, what)
+                        return get()
+
+                    with open(test_file, 'rb') as f:
+                        # instead of: output_mupy = subprocess.check_output(args, stdin=f)
+                        master, slave = pty.openpty()
+                        p = subprocess.Popen(args, stdin=slave, stdout=slave,
+                                             stderr=subprocess.STDOUT, bufsize=0)
+                        banner = get()
+                        output_mupy = banner + b''.join(send_get(line) for line in f)
+                        p.kill()
+                        os.close(master)
+                        os.close(slave)
                 else:
                     output_mupy = subprocess.check_output(args + [test_file])
             except subprocess.CalledProcessError:
@@ -64,6 +88,9 @@ def run_micropython(pyb, args, test_file):
                         cs.append('\\' + c)
                     else:
                         cs.append(c)
+                # accept carriage-return(s) before final newline
+                if cs[-1] == '\n':
+                    cs[-1] = '\r*\n'
                 return bytes(''.join(cs), 'utf8')
 
             # convert parts of the output that are not stable across runs
@@ -96,6 +123,9 @@ def run_micropython(pyb, args, test_file):
                     # a regex
                     if lines_exp[i][1].match(lines_mupy[i_mupy]):
                         lines_mupy[i_mupy] = lines_exp[i][0]
+                    else:
+                        #print("don't match: %r %s" % (lines_exp[i][1], lines_mupy[i_mupy])) # DEBUG
+                        pass
                     i_mupy += 1
                 if i_mupy >= len(lines_mupy):
                     break
@@ -133,10 +163,6 @@ def run_tests(pyb, tests, args):
     if native == b'CRASH':
         skip_native = True
 
-    # These tests no longer work; TODO change them or remove them
-    skip_tests.add('cmdline/repl_basic.py')
-    skip_tests.add('cmdline/repl_cont.py')
-
     # Some tests shouldn't be run under Travis CI
     if os.getenv('TRAVIS') == 'true':
         skip_tests.add('basics/memoryerror.py')