ColumnFixture: Failing test case for NH-3899 (overly long alias names).

Author: oskarb

src/NHibernate.Test/MappingTest/ColumnFixture.cs

@@ -39,5 +39,53 @@ public void StringSqlType()
 			column.Length = 100;
 			Assert.AreEqual("NVARCHAR(100)", column.GetSqlType(_dialect, null));
 		}
+
+
+		[TestCase("xxxxyyyyz")]
+		[TestCase("xxxxyyyyzz")]
+		[TestCase("xxxxyyyyzzz")]
+		[TestCase("xxxxyyy4z", Description = "Non-letter digit character would be cut, make sure we don't skip length check.")]
+		[TestCase("xxxxyyyz4z", Description = "Non-letter digit character would be cut, make sure we don't skip length check.")]
+		[TestCase("xxxxyyyzz4z", Description = "Non-letter digit character would be cut, make sure we don't skip length check.")]
+		[TestCase("xxxxyyyy4", Description = "Non-letter digit character would be cut, make sure we don't skip length check.")]
+		[TestCase("xxxxyyyyz4", Description = "Non-letter digit character would be cut, make sure we don't skip length check.")]
+		[TestCase("xxxxyyyyzz4", Description = "Non-letter digit character would be cut, make sure we don't skip length check.")]
+		public void GetAliasRespectsMaxAliasLength(string columnName)
+		{
+			var dialect = new GenericDialect();
+
+			// Verify test case assumption.
+			Assert.That(dialect.MaxAliasLength, Is.EqualTo(10));
+
+			var column = new Column(columnName);
+			string generatedAlias = column.GetAlias(dialect);
+
+			Assert.That(generatedAlias, Has.Length.LessThanOrEqualTo(dialect.MaxAliasLength));
+		}
+
+
+		[TestCase("xxxxyyyyz")]
+		[TestCase("xxxxyyyyzz")]
+		[TestCase("xxxxyyyyzzz")]
+		[TestCase("xxxxyyy4z")]
+		[TestCase("xxxxyyyz4z")]
+		[TestCase("xxxxyyyzz4z")]
+		[TestCase("xxxxyyyy4")]
+		[TestCase("xxxxyyyyz4")]
+		[TestCase("xxxxyyyyzz4")]
+		public void GetAliasWithTableSuffixRespectsMaxAliasLength(string columnName)
+		{
+			var dialect = new GenericDialect();
+
+			// Verify test case assumption.
+			Assert.That(dialect.MaxAliasLength, Is.EqualTo(10));
+
+			var table = new Table();
+			var column = new Column(columnName);
+
+			string generatedAlias = column.GetAlias(dialect, table);
+
+			Assert.That(generatedAlias, Has.Length.LessThanOrEqualTo(dialect.MaxAliasLength));
+		}
 	}
-}
+}