Issue #10914: Add a minimal embedding test to test_capi.

1 files changed, 32 insertions, 3 deletions

diff --git a/Lib/test/test_capi.py b/Lib/test/test_capi.py
index f913347..327ac66 100644
--- a/Lib/test/test_capi.py
+++ b/Lib/test/test_capi.py
@@ -2,6 +2,7 @@
 # these are all functions _testcapi exports whose name begins with 'test_'.
 
 from __future__ import with_statement
+import os
 import random
 import subprocess
 import sys
@@ -141,8 +142,38 @@ class Test6012(unittest.TestCase):
     def test(self):
         self.assertEqual(_testcapi.argparsing("Hello", "World"), 1)
 
+
+class EmbeddingTest(unittest.TestCase):
+
+    def test_subinterps(self):
+        # XXX only tested under Unix checkouts
+        basepath = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
+        oldcwd = os.getcwd()
+        # This is needed otherwise we get a fatal error:
+        # "Py_Initialize: Unable to get the locale encoding
+        # LookupError: no codec search functions registered: can't find encoding"
+        os.chdir(basepath)
+        try:
+            exe = os.path.join(basepath, "Modules", "_testembed")
+            if not os.path.exists(exe):
+                self.skipTest("%r doesn't exist" % exe)
+            p = subprocess.Popen([exe],
+                                 stdout=subprocess.PIPE,
+                                 stderr=subprocess.PIPE)
+            (out, err) = p.communicate()
+            self.assertEqual(p.returncode, 0,
+                             "bad returncode %d, stderr is %r" %
+                             (p.returncode, err))
+            if support.verbose:
+                print()
+                print(out.decode('latin1'))
+                print(err.decode('latin1'))
+        finally:
+            os.chdir(oldcwd)
+
+
 def test_main():
-    support.run_unittest(CAPITest)
+    support.run_unittest(CAPITest, TestPendingCalls, Test6012, EmbeddingTest)
 
     for name in dir(_testcapi):
         if name.startswith('test_'):
@@ -177,8 +208,6 @@ def test_main():
         t.start()
         t.join()
 
-    support.run_unittest(TestPendingCalls, Test6012)
-
 
 if __name__ == "__main__":
     test_main()