- The generated index name also is based on

a "max index name length" attribute which is
separate from the "max identifier length" -
this to appease MySQL who has a max length
of 64 for index names, separate from their
overall max length of 255.  [ticket:1412]

2 files changed, 39 insertions, 16 deletions

diff --git a/test/dialect/test_mysql.py b/test/dialect/test_mysql.py
index 791a93c6e..7c4cc2309 100644
--- a/test/dialect/test_mysql.py
+++ b/test/dialect/test_mysql.py
@@ -1212,7 +1212,24 @@ class SQLTest(TestBase, AssertsCompiledSQL):
         self.assert_compile(
             select([extract('milliseconds', t.c.col1)]),
             "SELECT EXTRACT(millisecond FROM t.col1) AS anon_1 FROM t")
-
+    
+    def test_too_long_index(self):
+        exp = 'ix_zyrenian_zyme_zyzzogeton_zyzzogeton_zyrenian_zyme_zyz_5cd2'
+        tname = 'zyrenian_zyme_zyzzogeton_zyzzogeton'
+        cname = 'zyrenian_zyme_zyzzogeton_zo'
+        
+        t1 = Table(tname, MetaData(), 
+                    Column(cname, Integer, index=True),
+                )
+        ix1 = list(t1.indexes)[0]
+        
+        self.assert_compile(
+            schema.CreateIndex(ix1),
+            "CREATE INDEX %s "
+            "ON %s (%s)" % (exp, tname, cname),
+            dialect=mysql.dialect()
+        )
+        
     def test_innodb_autoincrement(self):
         t1 = Table('sometable', MetaData(), Column('assigned_id',
                    Integer(), primary_key=True, autoincrement=False),
diff --git a/test/sql/test_constraints.py b/test/sql/test_constraints.py
index 5624c0ec6..69f29a9bd 100644
--- a/test/sql/test_constraints.py
+++ b/test/sql/test_constraints.py
@@ -183,24 +183,30 @@ class ConstraintTest(TestBase, AssertsExecutionResults, AssertsCompiledSQL):
 
     def test_too_long_idx_name(self):
         dialect = testing.db.dialect.__class__()
-        dialect.max_identifier_length = 22
 
-        for tname, cname, exp in [
-            ('sometable', 'this_name_is_too_long', 'ix_sometable_t_09aa'),
-            ('sometable', 'this_name_alsois_long', 'ix_sometable_t_3cf1'),
-        ]:
+        for max_ident, max_index in [(22, None), (256, 22)]:
+            dialect.max_identifier_length = max_ident
+            dialect.max_index_name_length = max_index
+
+            for tname, cname, exp in [
+                ('sometable', 'this_name_is_too_long', 'ix_sometable_t_09aa'),
+                ('sometable', 'this_name_alsois_long', 'ix_sometable_t_3cf1'),
+            ]:
         
-            t1 = Table(tname, MetaData(), 
-                        Column(cname, Integer, index=True),
-                    )
-            ix1 = list(t1.indexes)[0]
+                t1 = Table(tname, MetaData(), 
+                            Column(cname, Integer, index=True),
+                        )
+                ix1 = list(t1.indexes)[0]
         
-            self.assert_compile(
-                schema.CreateIndex(ix1),
-                "CREATE INDEX %s "
-                "ON %s (%s)" % (exp, tname, cname),
-                dialect=dialect
-            )
+                self.assert_compile(
+                    schema.CreateIndex(ix1),
+                    "CREATE INDEX %s "
+                    "ON %s (%s)" % (exp, tname, cname),
+                    dialect=dialect
+                )
+        
+        dialect.max_identifier_length = 22
+        dialect.max_index_name_length = None
         
         t1 = Table('t', MetaData(), Column('c', Integer))
         assert_raises(