[pypy-commit] pypy py3.6: Check that the 'e' format works in the struct module.

[amauryfa]

Author: Amaury Forgeot d'Arc <amauryfa at gmail.com>
Branch: py3.6
Changeset: r93377:abab5c6e2946
Date: 2017-12-11 20:29 +0100
http://bitbucket.org/pypy/pypy/changeset/abab5c6e2946/

Log:	Check that the 'e' format works in the struct module.

diff --git a/pypy/module/struct/test/test_struct.py b/pypy/module/struct/test/test_struct.py
--- a/pypy/module/struct/test/test_struct.py
+++ b/pypy/module/struct/test/test_struct.py
@@ -49,6 +49,7 @@
         assert calcsize('=Q') == 8
         assert calcsize('<f') == 4
         assert calcsize('>d') == 8
+        assert calcsize('<d') == 2
         assert calcsize('!13s') == 13
         assert calcsize('=500p') == 500
         # test with some repetitions and multiple format characters
@@ -256,6 +257,14 @@
         assert unpack("<f", b'\x00\x00H\xc1') == (-12.5,)
         raises(OverflowError, pack, "<f", 10e100)
 
+    def test_half_floats(self):
+        pack = self.struct.pack
+        unpack = self.struct.unpack
+        assert pack("<e", 65504.0) == b'\xff\x7b'
+        assert pack(">e", 65504.0) == b'\x7b\xff'
+        assert unpack(">e", b'\x7b\xff') == (65504.0,)
+        raises(OverflowError, pack, "<e", 1e6)
+
     def test_bool(self):
         pack = self.struct.pack
         assert pack("!?", True) == b'\x01'