BUG: Fix issue with cython compiler error messages.

compyle/ext_module.py

@@ -3,6 +3,7 @@
 from distutils.sysconfig import get_config_vars
 from distutils.util import get_platform
 from distutils.errors import CompileError, LinkError
+from Cython.Compiler.Errors import PyrexError
 import hashlib
 import importlib
 import io
@@ -282,7 +283,7 @@ def build(self, force=False):
                     _out = stream.get_output()
                     print(_out[0])
                     print(_out[1])
-            except (CompileError, LinkError):
+            except (PyrexError, CompileError, LinkError):
                 hline = "*"*80
                 print(hline + "\nERROR")
                 s_out = stream.get_output()

compyle/tests/test_ext_module.py

@@ -7,6 +7,7 @@
 import tempfile
 from textwrap import dedent
 from multiprocessing import Pool
+import pytest
 from unittest import TestCase, main, SkipTest
 
 try:
@@ -107,6 +108,11 @@ def test_md5(self):
         self.assertNotEqual(get_md5(data), get_md5(data + ' '))
 
 
+@pytest.fixture(scope="function")
+def use_capsys(request, capsys):
+    request.instance.capsys = capsys
+
+
 class TestExtModule(TestCase):
     def setUp(self):
         self.root = tempfile.mkdtemp()
@@ -162,6 +168,26 @@ def test_load_module(self):
         self.assertEqual(mod.f(), "hello world")
         self.assertTrue(exists(s.ext_path))
 
+    @pytest.mark.usefixtures("use_capsys")
+    def test_compiler_errors_are_captured(self):
+        # Given
+        src = dedent('''\
+        # cython: language_level=3
+        def f():
+            print(bug)
+        ''')
+        s = ExtModule(src, root=self.root)
+
+        # When
+        self.assertRaises(SystemExit, s.write_and_build)
+
+        # Then
+        captured = self.capsys.readouterr()
+        err = captured.out + captured.err
+        print(err)
+        self.assertTrue('Error compiling Cython file' in err)
+        self.assertTrue('def f()' in err)
+
     def _create_dummy_module(self):
         code = "# cython: language_level=3\ndef hello(): return 'hello'"
         modname = 'test_rebuild.py'