@Test
public void test_compare_addAndDropColumn() throws Exception {
MTable base = base();
MTable newTable = newTable();
ModelDiff diff = new ModelDiff();
base.compare(diff, newTable);
assertThat(diff.getApplyChanges()).hasSize(1);
assertThat(diff.getDropChanges()).hasSize(1);
}
/** Convert the model into a ChangeSet. */
private ChangeSet asChangeSet() {
// empty diff so changes will effectively all be create
ModelDiff diff = new ModelDiff();
diff.compareTo(model);
List<Object> createChanges = diff.getCreateChanges();
// put the changes into a ChangeSet
ChangeSet createChangeSet = new ChangeSet();
createChangeSet.getChangeSetChildren().addAll(createChanges);
return createChangeSet;
}
@Test
public void test_compare_addHistoryToTable() {
MTable base = base();
MTable withHistory = base();
withHistory.setWithHistory(true);
ModelDiff diff = new ModelDiff();
base.compare(diff, withHistory);
assertThat(diff.getDropChanges()).isEmpty();
assertThat(diff.getApplyChanges()).hasSize(1);
assertThat(diff.getApplyChanges().get(0)).isInstanceOf(AddHistoryTable.class);
}
@Test
public void test_compare_addTwoColumnsToSameTable() throws Exception {
ModelDiff diff = new ModelDiff();
diff.compareTables(base(), newTableAdd2Columns());
List<Object> createChanges = diff.getApplyChanges();
assertThat(createChanges).hasSize(1);
AddColumn addColumn = (AddColumn) createChanges.get(0);
assertThat(addColumn.getColumn()).extracting("name").contains("comment", "note");
assertThat(addColumn.getColumn()).extracting("type").contains("varchar(1000)", "varchar(2000)");
assertThat(diff.getDropChanges()).hasSize(0);
}
@Test
public void test_compare_removeHistoryFromTable() throws Exception {
MTable withHistory = base();
withHistory.setWithHistory(true);
MTable noHistory = base();
ModelDiff diff = new ModelDiff();
withHistory.compare(diff, noHistory);
assertThat(diff.getApplyChanges()).isEmpty();
assertThat(diff.getDropChanges()).hasSize(1);
assertThat(diff.getDropChanges().get(0)).isInstanceOf(DropHistoryTable.class);
}
@Test
public void test_compare_addColumnDropColumn() throws Exception {
ModelDiff diff = new ModelDiff();
diff.compareTables(base(), newTable());
List<Object> createChanges = diff.getApplyChanges();
assertThat(createChanges).hasSize(1);
AddColumn addColumn = (AddColumn) createChanges.get(0);
assertThat(addColumn.getColumn()).extracting("name").contains("comment");
assertThat(addColumn.getColumn()).extracting("type").contains("varchar(1000)");
List<Object> dropChanges = diff.getDropChanges();
assertThat(dropChanges).hasSize(1);
DropColumn dropColumn = (DropColumn) dropChanges.get(0);
assertThat(dropColumn.getColumnName()).isEqualTo("status");
assertThat(dropColumn.getTableName()).isEqualTo("tab");
}
@Test
public void test_compare_modifyColumn() throws Exception {
ModelDiff diff = new ModelDiff();
diff.compareTables(base(), newTableModifiedColumn());
List<Object> createChanges = diff.getApplyChanges();
assertThat(createChanges).hasSize(1);
AlterColumn alterColumn = (AlterColumn) createChanges.get(0);
assertThat(alterColumn.getColumnName()).isEqualTo("name");
assertThat(alterColumn.getType()).isEqualTo("varchar(30)");
assertThat(alterColumn.isNotnull()).isEqualTo(true);
assertThat(alterColumn.getUnique()).isNull();
assertThat(alterColumn.getCheckConstraint()).isNull();
assertThat(alterColumn.getReferences()).isNull();
assertThat(diff.getDropChanges()).hasSize(0);
}