/**
* Appends the values of the given row to the result
*
* @param row The row, not null
* @param result The result to append to, not null
*/
protected void appendRow(Row row, StringBuilder result) {
for (Column column : row.getColumns()) {
result.append(objectFormatter.format(column.getValue()));
result.append(", ");
}
result.setLength(result.length() - 2);
}
/**
* Appends the column names of the given row to the result
*
* @param row The row, not null
* @param result The result to append to, not null
*/
protected void appendColumnNames(Row row, StringBuilder result) {
for (Column column : row.getColumns()) {
result.append(column.getName());
result.append(", ");
}
result.setLength(result.length() - 2);
}
/**
* Appends the missing tables of the given schema difference to the result
*
* @param schemaDifference The difference, not null
* @param result The result to append to, not null
*/
protected void appendMissingTableDifferences(
SchemaDifference schemaDifference, StringBuilder result) {
for (Table missingTable : schemaDifference.getMissingTables()) {
result.append("\nFound missing table ");
result.append(schemaDifference.getSchema().getName());
result.append(".");
result.append(missingTable.getName());
}
}
/**
* Appends the missing rows of the given table difference to the result
*
* @param tableDifference The difference, not null
* @param result The result to append to, not null
*/
protected void appendMissingRowDifferences(
TableDifference tableDifference, StringBuilder result) {
for (Row missingRow : tableDifference.getMissingRows()) {
result.append("\n Missing row:\n ");
appendColumnNames(missingRow, result);
result.append("\n ");
appendRow(missingRow, result);
result.append("\n");
}
}
/**
* Formats the assertion failed message for the given difference.
*
* @param schemaDifference The difference, not null
* @return The message, not null
*/
protected String generateErrorMessage(SchemaDifference schemaDifference) {
StringBuilder result =
new StringBuilder(
"Assertion failed. Differences found between the expected data set and actual database content.");
String schemaName = schemaDifference.getSchema().getName();
appendMissingTableDifferences(schemaDifference, result);
appendTableDifferences(schemaDifference, result);
result.append("\n\nActual database content:\n\n");
appendSchemaContent(schemaDifference.getSchema(), schemaDifference.getActualSchema(), result);
return result.toString();
}
/**
* Appends the table differences of the given schema difference to the result
*
* @param schemaDifference The difference, not null
* @param result The result to append to, not null
*/
protected void appendTableDifferences(SchemaDifference schemaDifference, StringBuilder result) {
for (TableDifference tableDifference : schemaDifference.getTableDifferences()) {
Table table = tableDifference.getTable();
if (table.isEmpty()) {
result.append("\nExpected table to be empty but found rows for table ");
appendTableName(schemaDifference.getSchema(), table, result);
result.append("\n");
continue;
}
result.append("\nFound differences for table ");
appendTableName(schemaDifference.getSchema(), table, result);
result.append(":\n");
appendMissingRowDifferences(tableDifference, result);
appendBestRowDifferences(tableDifference, result);
}
}
/**
* Appends all rows and tables of the actual schema to the result. Only tables that are in the
* expected schema will be appended.
*
* @param schema The expected schema, not null
* @param actualSchema The actual schema, not null
* @param result The result to append to, not null
*/
protected void appendSchemaContent(Schema schema, Schema actualSchema, StringBuilder result) {
for (Table table : schema.getTables()) {
Table actualTable = actualSchema.getTable(table.getName());
if (actualTable == null) {
continue;
}
appendTableName(schema, actualTable, result);
result.append("\n");
if (actualTable.getRows().isEmpty()) {
result.append(" <empty table>\n");
} else {
result.append(" ");
appendColumnNames(actualTable.getRows().get(0), result);
result.append("\n");
for (Row row : actualTable.getRows()) {
result.append(" ");
appendRow(row, result);
result.append("\n");
}
}
result.append("\n");
}
}
/**
* Appends the schema and table name to the result
*
* @param schema The schema name, not null
* @param table The table name, not null
* @param result The result to append to, not null
*/
protected void appendTableName(Schema schema, Table table, StringBuilder result) {
result.append(schema.getName());
result.append(".");
result.append(table.getName());
}
/**
* Appends the best matching row differences of the given table difference to the result
*
* @param tableDifference The difference, not null
* @param result The result to append to, not null
*/
protected void appendBestRowDifferences(TableDifference tableDifference, StringBuilder result) {
for (RowDifference rowDifference : tableDifference.getBestRowDifferences()) {
result.append("\n Different row: \n ");
appendColumnNames(rowDifference.getRow(), result);
result.append("\n ");
appendRow(rowDifference.getRow(), result);
result.append("\n\n Best matching differences: ");
for (Column column : rowDifference.getMissingColumns()) {
result.append("\n Missing column ");
result.append(column.getName());
}
for (ColumnDifference columnDifference : rowDifference.getColumnDifferences()) {
result.append("\n ");
result.append(columnDifference.getColumn().getName());
result.append(": ");
result.append(objectFormatter.format(columnDifference.getColumn().getValue()));
result.append(" <-> ");
Column actualColumn = columnDifference.getActualColumn();
result.append(
objectFormatter.format(actualColumn == null ? null : actualColumn.getValue()));
}
result.append("\n");
}
}