package liquibase.change.core.supplier;
import liquibase.change.Change;
import liquibase.change.ColumnConfig;
import liquibase.change.ConstraintsConfig;
import liquibase.change.core.CreateTableChange;
import liquibase.change.core.DropNotNullConstraintChange;
import liquibase.diff.DiffResult;
import liquibase.diff.ObjectDifferences;
import liquibase.sdk.supplier.change.AbstractChangeSupplier;
import liquibase.structure.core.Column;
import liquibase.structure.core.Table;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
public class DropNotNullConstraintChangeSupplier extends AbstractChangeSupplier<DropNotNullConstraintChange> {
public DropNotNullConstraintChangeSupplier() {
super(DropNotNullConstraintChange.class);
}
@Override
public Change[] prepareDatabase(DropNotNullConstraintChange change) throws Exception {
CreateTableChange createTableChange = new CreateTableChange();
createTableChange.setCatalogName(change.getCatalogName());
createTableChange.setSchemaName(change.getSchemaName());
createTableChange.setTableName(change.getTableName());
String columnType = change.getColumnDataType();
if (columnType == null) {
columnType = "int";
}
createTableChange.addColumn(new ColumnConfig().setName(change.getColumnName()).setType(columnType).setConstraints(new ConstraintsConfig().setNullable(false)));
createTableChange.addColumn(new ColumnConfig().setName("other_column").setType("int"));
return new Change[] {createTableChange };
}
@Override
public void checkDiffResult(DiffResult diffResult, DropNotNullConstraintChange change) {
ObjectDifferences diff = diffResult.getChangedObject(new Column(Table.class, change.getCatalogName(), change.getSchemaName(), change.getTableName(), change.getColumnName()));
assertFalse((Boolean) diff.getDifference("nullable").getReferenceValue());
assertTrue((Boolean) diff.getDifference("nullable").getComparedValue());
}
}