Script to run the sqlalchemy test suite

sqlalchemy uses pytest to run its test suite, which unfortunately
has been hard to get working.

.gitmodules

@@ -20,3 +20,6 @@
 	path = test/integration/gflags
 	url = https://github.com/google/python-gflags
 	ignore = untracked
+[submodule "test/integration/sqlalchemy"]
+	path = test/integration/sqlalchemy
+	url = https://github.com/zzzeek/sqlalchemy

sqlalchemy @ eb1bb84f

+Subproject commit eb1bb84fbc10c801c7269a3d38c9e0235327857e

test/integration/sqlalchemy_test.py

+# skip-if: True
+# - getting to the point of running the sqlalchemy tests is quite hard, since there is a lot
+#   of pytest code that runs beforehand.
+
+import os
+import sys
+import subprocess
+import shutil
+
+ENV_NAME = "sqlalchemy_test_env_" + os.path.basename(sys.executable)
+
+if not os.path.exists(ENV_NAME) or os.stat(sys.executable).st_mtime > os.stat(ENV_NAME + "/bin/python").st_mtime:
+    print "Creating virtualenv to install testing dependencies..."
+    VIRTUALENV_SCRIPT = os.path.dirname(__file__) + "/virtualenv/virtualenv.py"
+
+    try:
+        args = [sys.executable, VIRTUALENV_SCRIPT, "-p", sys.executable, ENV_NAME]
+        print "Running", args
+        subprocess.check_call(args)
+
+        subprocess.check_call([ENV_NAME + "/bin/pip", "install", "mock", "pytest"])
+    except:
+        print "Error occurred; trying to remove partially-created directory"
+        ei = sys.exc_info()
+        try:
+            subprocess.check_call(["rm", "-rf", ENV_NAME])
+        except Exception as e:
+            print e
+        raise ei[0], ei[1], ei[2]
+
+# subprocess.check_call([os.path.abspath("sqlalchemy_test_env/bin/python"), "-c", "import py; print type(py); print py.builtin"])
+
+SQLALCHEMY_DIR = os.path.dirname(__file__) + "/sqlalchemy"
+python_exe = os.path.abspath(ENV_NAME + "/bin/python")
+
+# Exec'ing the test suite can be nice for debugging, but let's the subprocess version
+# in case we want to do stuff afterwards:
+do_exec = True
+
+if do_exec:
+    print "About to exec"
+    os.chdir(SQLALCHEMY_DIR)
+    os.execl(python_exe, python_exe, "-m", "pytest")
+else:
+    subprocess.check_call([python_exe, "-m", "pytest"], cwd=SQLALCHEMY_DIR)
+
+
+print
+print "PASSED"