#699 - DB Migration not generating sql to alter check constraints

src/test/java/com/avaje/ebean/dbmigration/ddlgeneration/platform/BaseTableDdlTest.java

@@ -5,10 +5,12 @@ import com.avaje.ebean.config.ServerConfig;
 import com.avaje.ebean.config.dbplatform.H2Platform;
 import com.avaje.ebean.dbmigration.ddlgeneration.DdlWrite;
 import com.avaje.ebean.dbmigration.ddlgeneration.Helper;
+import com.avaje.ebean.dbmigration.migration.AlterColumn;
 import com.avaje.ebean.dbmigration.migration.Column;
 import com.avaje.ebean.dbmigration.migration.CreateTable;
 import org.junit.Test;
 
+import java.io.IOException;
 import java.util.List;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -18,6 +20,25 @@ public class BaseTableDdlTest {
 
   ServerConfig serverConfig = new ServerConfig();
 
+  @Test
+  public void testAlterColumn() throws IOException {
+
+    BaseTableDdl ddlGen = new BaseTableDdl(serverConfig, new H2Platform().getPlatformDdl());
+
+    DdlWrite write = new DdlWrite();
+
+    AlterColumn alterColumn = new AlterColumn();
+    alterColumn.setTableName("mytab");
+    alterColumn.setCheckConstraint("check (acol in ('A','B'))");
+    alterColumn.setCheckConstraintName("ck_mytab_acol");
+
+    ddlGen.generate(write, alterColumn);
+
+    String ddl = write.apply().getBuffer();
+    assertThat(ddl).contains("alter table mytab drop constraint ck_mytab_acol");
+    assertThat(ddl).contains("alter table mytab add constraint ck_mytab_acol check (acol in ('A','B'))");
+  }
+
   @Test
   public void testGenerate() throws Exception {
 

src/test/java/com/avaje/ebean/dbmigration/model/MColumnTest.java

@@ -99,7 +99,7 @@ public class MColumnTest {
 
     assertChanges(diff);
     assertThat(getAlterColumn(diff).getCheckConstraint()).isEqualTo("abc");
-    assertThat(getAlterColumn(diff).getDropCheckConstraint()).isEqualTo("d");
+    assertThat(getAlterColumn(diff).getDropCheckConstraint()).isNull();
   }
 
   @Test