144 lines
4.1 KiB
Dart
144 lines
4.1 KiB
Dart
import 'package:symbol_table/symbol_table.dart';
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import 'package:test/test.dart';
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main() {
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late SymbolTable<int> scope;
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setUp(() {
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scope = SymbolTable<int>(values: {'one': 1});
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});
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test('starter values', () {
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expect(scope['one']?.value, 1);
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});
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test('add', () {
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var two = scope.create('two', value: 2);
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expect(two.value, 2);
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expect(two.isImmutable, isFalse);
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});
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test('put', () {
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var one = scope.resolve('one');
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var child = scope.createChild();
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var three = child.assign('one', 3);
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expect(three.value, 3);
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expect(three, one);
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});
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test('private', () {
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var three = scope.create('three', value: 3)
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..visibility = Visibility.private;
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expect(scope.allVariables, contains(three));
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expect(
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scope.allVariablesWithVisibility(Visibility.private), contains(three));
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expect(scope.allPublicVariables, isNot(contains(three)));
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});
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test('protected', () {
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var three = scope.create('three', value: 3)
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..visibility = Visibility.protected;
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expect(scope.allVariables, contains(three));
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expect(scope.allVariablesWithVisibility(Visibility.protected),
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contains(three));
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expect(scope.allPublicVariables, isNot(contains(three)));
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});
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test('constants', () {
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var two = scope.create('two', value: 2, constant: true);
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expect(two.value, 2);
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expect(two.isImmutable, isTrue);
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expect(() => scope['two'] = 3, throwsStateError);
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});
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test('lock', () {
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expect(scope['one']?.isImmutable, isFalse);
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scope['one']!.lock();
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expect(scope['one']?.isImmutable, isTrue);
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expect(() => scope['one'] = 2, throwsStateError);
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});
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test('child', () {
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expect(scope.createChild().createChild().resolve('one')!.value, 1);
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});
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test('clone', () {
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var child = scope.createChild();
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var clone = child.clone();
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expect(clone.resolve('one'), child.resolve('one'));
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expect(clone.parent, child.parent);
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});
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test('fork', () {
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var fork = scope.fork();
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scope.assign('three', 3);
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expect(scope.resolve('three'), isNotNull);
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expect(fork.resolve('three'), isNull);
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});
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test('remove', () {
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var one = scope.remove('one')!;
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expect(one.value, 1);
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expect(scope.resolve('one'), isNull);
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});
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test('root', () {
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expect(scope.isRoot, isTrue);
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expect(scope.root, scope);
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var child = scope
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.createChild()
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.createChild()
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.createChild()
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.createChild()
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.createChild()
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.createChild()
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.createChild();
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expect(child.isRoot, false);
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expect(child.root, scope);
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});
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test('visibility comparisons', () {
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expect([Visibility.private, Visibility.protected],
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everyElement(lessThan(Visibility.public)));
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expect(Visibility.private, lessThan(Visibility.protected));
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expect(Visibility.protected, greaterThan(Visibility.private));
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expect(Visibility.public, greaterThan(Visibility.private));
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expect(Visibility.public, greaterThan(Visibility.protected));
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});
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test('depth', () {
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expect(scope.depth, 0);
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expect(scope.clone().depth, 0);
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expect(scope.fork().depth, 0);
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expect(scope.createChild().depth, 1);
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expect(scope.createChild().createChild().depth, 2);
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expect(scope.createChild().createChild().createChild().depth, 3);
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});
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test('unique name', () {
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expect(scope.uniqueName('foo'), 'foo0');
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expect(scope.uniqueName('foo'), 'foo1');
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expect(scope.createChild().uniqueName('foo'), 'foo2');
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expect(scope.createChild().uniqueName('foo'), 'foo2');
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var child = scope.createChild();
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expect(child.uniqueName('foo'), 'foo2');
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expect(child.uniqueName('foo'), 'foo3');
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expect(child.createChild().uniqueName('foo'), 'foo4');
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});
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test('context', () {
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scope.context = 24;
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expect(scope.context, 24);
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expect(scope.createChild().context, 24);
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expect(scope.createChild().createChild().context, 24);
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var child = scope.createChild().createChild()..context = 35;
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expect(child.context, 35);
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expect(child.createChild().context, 35);
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expect(child.createChild().createChild().context, 35);
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expect(scope.context, 24);
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});
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}
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