feat: First version with working triggers to track tables
This commit is contained in:
Marcelo Soares
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commit
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1 changed files with 2082 additions and 0 deletions
180
test/triggers/trigger_generation_test.dart
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180
test/triggers/trigger_generation_test.dart
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import 'package:drift_offline_first/src/migrator.dart';
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import 'package:drift_offline_first/src/triggers.dart';
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import 'package:test/test.dart';
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import '../utils/database.dart';
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void main() {
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group('Given a SQLite3 database with a table', () {
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late OfflineSyncMigrator migrator;
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setUp(() async {
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migrator = database.createMigrator();
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});
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group('when generating trigger statements', () {
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late List<String> triggers;
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setUp(() async {
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final generator = Sqlite3OfflineSyncTriggers(migrator);
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triggers = generator.generateCreateTriggerStatements(database.todosTable);
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});
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test('then one trigger is created for each operation.', () {
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expect(triggers, hasLength(3));
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expect(triggers, anyElement(contains('AFTER INSERT ON "todos"')));
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expect(triggers, anyElement(contains('AFTER UPDATE ON "todos"')));
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expect(triggers, anyElement(contains('AFTER DELETE ON "todos"')));
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});
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test('then the insert trigger statement is correct.', () {
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final insertStatement = triggers
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.firstWhere((trigger) => trigger.contains('AFTER INSERT ON "todos"'));
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expect(
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insertStatement,
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'''\
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CREATE TRIGGER IF NOT EXISTS __crdt__todos__insert
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AFTER INSERT ON "todos"
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BEGIN
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INSERT OR REPLACE INTO __crdt_data (
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"table_name", "column_name", "row_id", "hlc_timestamp", "raw_value", "value_changed"
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)
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SELECT
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'todos' AS "table_name",
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column_name,
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NEW."id" AS "row_id",
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"hlc_timestamp",
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raw_value,
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value_changed
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FROM (
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SELECT $nextHlcFunction('${migrator.nodeId}') AS "hlc_timestamp"
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), (
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SELECT
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'id' AS "column_name",
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NEW."id" AS "raw_value",
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TRUE AS "value_changed"
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UNION ALL
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SELECT
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'title' AS "column_name",
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NEW."title" AS "raw_value",
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TRUE AS "value_changed"
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UNION ALL
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SELECT
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'content' AS "column_name",
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NEW."content" AS "raw_value",
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TRUE AS "value_changed"
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UNION ALL
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SELECT
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'target_date' AS "column_name",
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NEW."target_date" AS "raw_value",
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TRUE AS "value_changed"
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UNION ALL
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SELECT
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'category' AS "column_name",
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NEW."category" AS "raw_value",
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TRUE AS "value_changed"
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UNION ALL
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SELECT
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'status' AS "column_name",
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NEW."status" AS "raw_value",
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TRUE AS "value_changed"
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);
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END;''',
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);
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});
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test('then the update trigger statement is correct.', () {
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final updateStatement = triggers
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.firstWhere((trigger) => trigger.contains('AFTER UPDATE ON "todos"'));
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expect(
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updateStatement,
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'''\
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CREATE TRIGGER IF NOT EXISTS __crdt__todos__update
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AFTER UPDATE ON "todos"
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BEGIN
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INSERT OR REPLACE INTO __crdt_data (
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"table_name", "column_name", "row_id", "hlc_timestamp", "raw_value", "value_changed"
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)
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SELECT
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'todos' AS "table_name",
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column_name,
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OLD."id" AS "row_id",
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"hlc_timestamp",
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raw_value,
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value_changed
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FROM (
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SELECT $nextHlcFunction('${migrator.nodeId}') AS "hlc_timestamp"
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), (
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SELECT
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'id' AS "column_name",
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NEW."id" AS "raw_value",
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NEW."id" IS NOT OLD."id" AS "value_changed"
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UNION ALL
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SELECT
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'title' AS "column_name",
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NEW."title" AS "raw_value",
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NEW."title" IS NOT OLD."title" AS "value_changed"
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UNION ALL
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SELECT
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'content' AS "column_name",
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NEW."content" AS "raw_value",
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NEW."content" IS NOT OLD."content" AS "value_changed"
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UNION ALL
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SELECT
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'target_date' AS "column_name",
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NEW."target_date" AS "raw_value",
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NEW."target_date" IS NOT OLD."target_date" AS "value_changed"
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UNION ALL
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SELECT
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'category' AS "column_name",
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NEW."category" AS "raw_value",
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NEW."category" IS NOT OLD."category" AS "value_changed"
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UNION ALL
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SELECT
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'status' AS "column_name",
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NEW."status" AS "raw_value",
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NEW."status" IS NOT OLD."status" AS "value_changed"
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)
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WHERE (value_changed = TRUE);
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END;''',
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);
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});
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test('then the delete trigger statement is correct.', () {
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final deleteStatement = triggers
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.firstWhere((trigger) => trigger.contains('AFTER DELETE ON "todos"'));
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expect(
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deleteStatement,
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'''\
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CREATE TRIGGER IF NOT EXISTS __crdt__todos__delete
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AFTER DELETE ON "todos"
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BEGIN
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INSERT OR REPLACE INTO __crdt_data (
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"table_name", "column_name", "row_id", "hlc_timestamp", "raw_value", "value_changed"
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)
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SELECT
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'todos' AS "table_name",
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column_name,
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OLD."id" AS "row_id",
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"hlc_timestamp",
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raw_value,
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value_changed
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FROM (
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SELECT $nextHlcFunction('${migrator.nodeId}') AS "hlc_timestamp"
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), (
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SELECT
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'__crdt_is_deleted' AS "column_name",
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TRUE AS "raw_value",
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TRUE AS "value_changed"
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);
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END;''',
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);
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});
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});
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});
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// TODO: Add a test for the case where a table has multiple primary key columns.
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}
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