Fix the last test.

Author: srbaker

test/examples/cypher_error_example.py

@@ -27,13 +27,10 @@ class CypherErrorExample(BaseApplication):
     def __init__(self, uri, user, password):
         super(CypherErrorExample, self).__init__(uri, user, password)
 
-    # FIXME: this doesn't work because read_transaction behaves
-    # differently than in Java, so this throws a ClientError
-
     # tag::cypher-error[]
     def get_employee_number(self, name):
-        with self._driver.session() as session:
-            return session.read_transaction(lambda tx: self.select_employee(tx, name))
+        session =  self._driver.session()
+        session.read_transaction(lambda tx: self.select_employee(tx, name))
 
     def select_employee(self, tx, name):
         try:

test/examples/test_examples.py

@@ -68,14 +68,21 @@ def test_config_unencrypted_example(self):
 
         self.assertIsInstance(example, ConfigUnencryptedExample)
 
-    def Xtest_cypher_error_example(self):
+    def test_cypher_error_example(self):
         from cypher_error_example import CypherErrorExample
 
-        example = CypherErrorExample(self.bolt_uri, self.user, self.password)
-        employee_number = example.get_employee_number('Alice')
-
-        # FIXME: also check the error output like in the Java example
-        self.assertEqual(employee_number, -1)
+        f = get_string_io()
+        with stdout_redirector(f):
+            example = CypherErrorExample(self.bolt_uri, self.user, self.password)
+            try:
+                example.get_employee_number('Alice')
+            except:
+                pass
+
+        self.assertTrue(f.getvalue().startswith(
+            """Invalid input 'L': expected 't/T' (line 1, column 3 (offset: 2))
+"SELECT * FROM Employees WHERE name = $name"
+   ^"""))
 
     def test_driver_lifecycle_example(self):
         from driver_lifecycle_example import DriverLifecycleExample