67 lines
1.6 KiB
Dart
67 lines
1.6 KiB
Dart
import 'package:graphql_schema/graphql_schema.dart';
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import 'package:test/test.dart';
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void main() {
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group('interface', () {
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var a = objectType(
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'A',
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isInterface: true,
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fields: [
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field('text', graphQLString.nonNullable()),
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],
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);
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var b = objectType(
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'B',
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isInterface: true,
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interfaces: [a],
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fields: [
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field('text', graphQLString.nonNullable()),
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],
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);
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var c = objectType(
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'C',
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isInterface: true,
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interfaces: [b],
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fields: [
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field('text', graphQLString.nonNullable()),
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],
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);
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test('child implements parent', () {
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expect(b.isImplementationOf(a), true);
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expect(c.isImplementationOf(b), true);
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});
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test('parent does not implement child', () {
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expect(a.isImplementationOf(b), false);
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});
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test('child interfaces contains parent', () {
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expect(b.interfaces, contains(a));
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expect(c.interfaces, contains(b));
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});
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test('parent possibleTypes contains child', () {
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expect(a.possibleTypes, contains(b));
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expect(b.possibleTypes, contains(c));
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});
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test('grandchild implements grandparent', () {
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expect(c.isImplementationOf(a), true);
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});
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test('grandparent does not implement grandchild', () {
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expect(a.isImplementationOf(c), false);
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});
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test('grandchild interfaces contains grandparent', () {
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expect(c.interfaces, contains(a));
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});
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test('grandparent possibleTypes contains grandchild', () {
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expect(a.possibleTypes, contains(c));
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});
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});
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}
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