add and enable some tests

from_cpython/Lib/test/test_fractions.py

-# expected: fail
 """Tests for Lib/fractions.py."""
 
 from decimal import Decimal

from_cpython/Lib/test/test_long.py

-# expected: fail
 import unittest
 import sys
 
@@ -17,7 +16,10 @@ class Frm(object):
         return self.format % self.args
 
 # SHIFT should match the value in longintrepr.h for best testing.
-SHIFT = sys.long_info.bits_per_digit
+SHIFT = 64
+# Pyston changes: Pyston long implementation not based on digits.
+# disable it for now.
+# SHIFT = sys.long_info.bits_per_digit
 BASE = 2 ** SHIFT
 MASK = BASE - 1
 KARATSUBA_CUTOFF = 70   # from longobject.c

from_cpython/Modules/mathmodule.c

@@ -1281,7 +1281,9 @@ loghelper(PyObject* arg, double (*func)(double), char *funcname)
         Py_ssize_t e;
 
         /* Negative or zero inputs give a ValueError. */
-        if (Py_SIZE(arg) <= 0) {
+        // Pyston change: use _PyLong_Sign instead of Py_SIZE to check
+        // the sign of long object.
+        if (_PyLong_Sign(arg) <= 0) {
             PyErr_SetString(PyExc_ValueError,
                             "math domain error");
             return NULL;

test/CPYTHON_TEST_NOTES.md

@@ -101,7 +101,6 @@ test_file_eintr         not sure
 test_fileio             [unknown]
 test_file               wontfix: we don't destruct file objects when the test wants
 test_fork1              [unknown]
-test_fractions          [unknown]
 test_frozen             [unknown]
 test_ftplib             [unknown]
 test_funcattrs          we don't allow changing numing of function defaults
@@ -141,7 +140,6 @@ test__locale            No module named _locale
 test_locale             [unknown]
 test_longexp            [unknown]
 test_long_future        [unknown]
-test_long               sys.long_info
 test_macos              Not really a failure, but it tries to skip itself and we don't support that
 test_macostools         Not really a failure, but it tries to skip itself and we don't support that
 test_mailbox            [unknown]
@@ -187,7 +185,6 @@ test_runpy              [unknown]
 test_sax                [unknown]
 test_scope              eval of code object from existing function (not currently supported)
 test_scriptpackages     [unknown]
-test_set                lots of set issues
 test_shelve             [unknown]
 test_shlex              [unknown]
 test_signal             [unknown]

test/tests/exec_directory.py

+import sys
+import os
+import subprocess
+
+me = sys.executable
+file_path = os.path.dirname(__file__)
+
+with open('/dev/null')as ignore:
+    def run(args):
+        process = subprocess.Popen([me] + args,
+                                   stdout=subprocess.PIPE,
+                                   stderr=ignore)
+        out, err = process.communicate()
+        sys.stdout.flush()
+        print(out)
+        sys.stdout.flush()
+
+    run(["".join([file_path, "/no_main_directory"])])
+    run(["".join([file_path, "/no_main_directory/sub_dir"])])

test/tests/long.py

@@ -146,3 +146,19 @@ print(long(unicode("-3")))
 
 print(long(x=10))
 print(long(x="10", base=10))
+
+try:
+    print(long('hek2mgl', 22))
+except Exception as e:
+    print(e.message)
+
+print(long('hek2mgl', 23))
+print(long('hek2mgl', 24))
+
+for i in range(-10, 10):
+    print(hash((-1 << 63) + i))
+    print(hash((1 << 63) + i))
+
+for i in xrange(100):
+    for j in xrange(100):
+        print i, j, hash((1 << i) - (1 << j))

test/tests/no_main_directory/sub_dir/__main__.py

+print("echo from __main__")