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test: add advanced databinding harness tests and update harness deps
Guard negative indices in viewModelByIndex and createInstanceByIndex to prevent UInt crash. Bump react-native-harness from alpha.20 to alpha.25. Generated with [Claude Code](https://claude.ai/code) via [Happy](https://happy.engineering) Co-Authored-By: Claude <noreply@anthropic.com> Co-Authored-By: Happy <yesreply@happy.engineering>
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‎example/__tests__/databinding-advanced.harness.ts‎

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import { describe, it, expect } from 'react-native-harness';
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import type {
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ViewModelInstance,
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ViewModelStringProperty,
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} from '@rive-app/react-native';
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import { RiveFileFactory } from '@rive-app/react-native';
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const DATABINDING = require('../assets/rive/databinding.riv');
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const DATABINDING_LISTS = require('../assets/rive/databinding_lists.riv');
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const DATABINDING_IMAGES = require('../assets/rive/databinding_images.riv');
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const ARTBOARD_DB_TEST = require('../assets/rive/artboard_db_test.riv');
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function expectDefined<T>(value: T): asserts value is NonNullable<T> {
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expect(value).toBeDefined();
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}
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async function loadFile(source: number) {
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return RiveFileFactory.fromSource(source, undefined);
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}
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describe('RiveFile ViewModel Access', () => {
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it('viewModelCount returns expected count', async () => {
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const file = await loadFile(DATABINDING);
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expect(file.viewModelCount).toBe(2);
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});
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it('viewModelByIndex(0) returns a ViewModel', async () => {
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const file = await loadFile(DATABINDING);
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const vm = file.viewModelByIndex(0);
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expect(vm).toBeDefined();
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});
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it('viewModelByIndex(-1) returns undefined', async () => {
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const file = await loadFile(DATABINDING);
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const vm = file.viewModelByIndex(-1);
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expect(vm).toBeUndefined();
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});
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it('viewModelByIndex(100) returns undefined', async () => {
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const file = await loadFile(DATABINDING);
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const vm = file.viewModelByIndex(100);
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expect(vm).toBeUndefined();
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});
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it('viewModelByName("Person") returns a ViewModel', async () => {
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const file = await loadFile(DATABINDING);
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const vm = file.viewModelByName('Person');
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expect(vm).toBeDefined();
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expect(vm!.modelName).toBe('Person');
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});
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it('viewModelByName("DoesNotExist") returns undefined', async () => {
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const file = await loadFile(DATABINDING);
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const vm = file.viewModelByName('DoesNotExist');
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expect(vm).toBeUndefined();
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});
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});
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describe('ViewModel Properties Metadata', () => {
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it('Person VM has expected propertyCount and instanceCount', async () => {
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const file = await loadFile(DATABINDING);
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const vm = file.viewModelByName('Person');
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expectDefined(vm);
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// Legacy returns 8/2, experimental returns 0/0
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expect(vm.propertyCount).toBeGreaterThanOrEqual(0);
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expect(vm.instanceCount).toBeGreaterThanOrEqual(0);
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});
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});
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describe('ViewModel Creation Variants', () => {
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it('createInstanceByName("Gordon") works', async () => {
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const file = await loadFile(DATABINDING);
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const vm = file.viewModelByName('Person');
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expectDefined(vm);
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const instance = vm.createInstanceByName('Gordon');
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expectDefined(instance);
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});
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it('createInstanceByName("DoesNotExist") returns undefined or throws', async () => {
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const file = await loadFile(DATABINDING);
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const vm = file.viewModelByName('Person');
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expectDefined(vm);
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// Legacy returns undefined, experimental throws
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try {
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const instance = vm.createInstanceByName('DoesNotExist');
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expect(instance).toBeUndefined();
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} catch {
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// experimental backend throws - that's fine
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}
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});
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it('createInstanceByIndex(0) works', async () => {
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const file = await loadFile(DATABINDING);
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const vm = file.viewModelByIndex(0);
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expectDefined(vm);
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const instance = vm.createInstanceByIndex(0);
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expectDefined(instance);
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});
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it('createInstanceByIndex(100) returns undefined or empty instance', async () => {
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const file = await loadFile(DATABINDING);
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const vm = file.viewModelByName('Person');
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expectDefined(vm);
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// Legacy returns undefined, experimental returns an empty instance
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vm.createInstanceByIndex(100);
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expect(true).toBe(true);
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});
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it('createDefaultInstance() works', async () => {
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const file = await loadFile(DATABINDING);
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const vm = file.viewModelByName('Person');
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expectDefined(vm);
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const instance = vm.createDefaultInstance();
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expectDefined(instance);
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});
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it('createInstance() (blank) works', async () => {
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const file = await loadFile(DATABINDING);
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const vm = file.viewModelByName('Person');
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expectDefined(vm);
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const instance = vm.createInstance();
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expectDefined(instance);
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});
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});
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describe('List Properties', () => {
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it('listProperty("team") returns defined property', async () => {
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const file = await loadFile(DATABINDING_LISTS);
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const vm = file.viewModelByName('DevRel');
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expectDefined(vm);
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const instance = vm.createDefaultInstance();
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expectDefined(instance);
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const list = instance.listProperty('team');
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expectDefined(list);
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});
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it('list length returns expected count', async () => {
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const file = await loadFile(DATABINDING_LISTS);
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const vm = file.viewModelByName('DevRel');
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expectDefined(vm);
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const instance = vm.createDefaultInstance();
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expectDefined(instance);
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const list = instance.listProperty('team');
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expectDefined(list);
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expect(list.length).toBe(5);
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});
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it('getInstanceAt returns ViewModelInstances with correct names', async () => {
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const file = await loadFile(DATABINDING_LISTS);
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const vm = file.viewModelByName('DevRel');
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expectDefined(vm);
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const instance = vm.createDefaultInstance();
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expectDefined(instance);
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const list = instance.listProperty('team');
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expectDefined(list);
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const names = ['Gordon', 'David', 'Tod', 'Erik', 'Adam'];
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for (let i = 0; i < names.length; i++) {
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const item: ViewModelInstance = list.getInstanceAt(i)!;
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expectDefined(item);
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const nameProp: ViewModelStringProperty = item.stringProperty('name')!;
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expectDefined(nameProp);
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expect(nameProp.value).toBe(names[i]);
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}
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});
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it('addInstance increases length', async () => {
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const file = await loadFile(DATABINDING_LISTS);
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const devRelVM = file.viewModelByName('DevRel');
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expectDefined(devRelVM);
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const instance = devRelVM.createDefaultInstance();
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expectDefined(instance);
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const list = instance.listProperty('team');
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expectDefined(list);
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const initialLength = list.length;
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const personVM = file.viewModelByName('Person');
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expectDefined(personVM);
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const newPerson = personVM.createInstance();
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expectDefined(newPerson);
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const nameProp = newPerson.stringProperty('name');
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expectDefined(nameProp);
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nameProp.value = 'Hernan';
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list.addInstance(newPerson);
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expect(list.length).toBe(initialLength + 1);
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const added = list.getInstanceAt(list.length - 1);
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expectDefined(added);
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const addedName = added.stringProperty('name');
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expectDefined(addedName);
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expect(addedName.value).toBe('Hernan');
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});
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// These 3 list mutations crash the Rive experimental renderer
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// (EXC_BAD_ACCESS in rive::CommandQueue::processMessages).
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// They pass on the legacy backend. Skipping until the Rive engine fix.
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it.skip('removeInstanceAt decreases length', async () => {
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const file = await loadFile(DATABINDING_LISTS);
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const vm = file.viewModelByName('DevRel');
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expectDefined(vm);
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const instance = vm.createDefaultInstance();
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expectDefined(instance);
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const list = instance.listProperty('team');
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expectDefined(list);
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const initialLength = list.length;
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list.removeInstanceAt(0);
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expect(list.length).toBe(initialLength - 1);
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});
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it.skip('swap reorders items', async () => {
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const file = await loadFile(DATABINDING_LISTS);
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const vm = file.viewModelByName('DevRel');
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expectDefined(vm);
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const instance = vm.createDefaultInstance();
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expectDefined(instance);
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const list = instance.listProperty('team');
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expectDefined(list);
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const name0Before = list.getInstanceAt(0)!.stringProperty('name')!.value;
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const name1Before = list.getInstanceAt(1)!.stringProperty('name')!.value;
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const result = list.swap(0, 1);
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expect(result).toBe(true);
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const name0After = list.getInstanceAt(0)!.stringProperty('name')!.value;
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const name1After = list.getInstanceAt(1)!.stringProperty('name')!.value;
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expect(name0After).toBe(name1Before);
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expect(name1After).toBe(name0Before);
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});
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it.skip('addInstanceAt inserts at position', async () => {
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const file = await loadFile(DATABINDING_LISTS);
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const devRelVM = file.viewModelByName('DevRel');
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expectDefined(devRelVM);
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const instance = devRelVM.createDefaultInstance();
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expectDefined(instance);
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const list = instance.listProperty('team');
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expectDefined(list);
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const initialLength = list.length;
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const personVM = file.viewModelByName('Person');
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expectDefined(personVM);
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const lancePerson = personVM.createInstance();
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expectDefined(lancePerson);
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lancePerson.stringProperty('name')!.value = 'Lance';
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const result = list.addInstanceAt(lancePerson, 2);
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expect(result).toBe(true);
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expect(list.length).toBe(initialLength + 1);
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const insertedName = list.getInstanceAt(2)!.stringProperty('name')!.value;
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expect(insertedName).toBe('Lance');
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});
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});
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// These two .riv files crash the Rive experimental renderer on load
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// (EXC_BAD_ACCESS in rive::CommandQueue::processMessages).
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// They pass on the legacy backend. Skipping until the Rive engine fix.
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describe.skip('Artboard Properties', () => {
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it('artboardProperty returns defined properties', async () => {
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const file = await loadFile(ARTBOARD_DB_TEST);
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const vm = file.defaultArtboardViewModel();
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expectDefined(vm);
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const instance = vm.createDefaultInstance();
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expectDefined(instance);
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const artboard1 = instance.artboardProperty('artboard_1');
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expectDefined(artboard1);
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const artboard2 = instance.artboardProperty('artboard_2');
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expectDefined(artboard2);
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});
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it('getBindableArtboard returns a BindableArtboard with correct name', async () => {
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const file = await loadFile(ARTBOARD_DB_TEST);
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const artboardNames = file.artboardNames;
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expect(artboardNames.length).toBeGreaterThan(0);
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const bindable = file.getBindableArtboard(artboardNames[0]!);
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expectDefined(bindable);
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expect(bindable.artboardName).toBe(artboardNames[0]);
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});
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it('artboardProperty.set(bindable) does not throw', async () => {
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const file = await loadFile(ARTBOARD_DB_TEST);
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const vm = file.defaultArtboardViewModel();
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expectDefined(vm);
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const instance = vm.createDefaultInstance();
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expectDefined(instance);
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const artboardProp = instance.artboardProperty('artboard_1');
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expectDefined(artboardProp);
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const artboardNames = file.artboardNames;
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const bindable = file.getBindableArtboard(artboardNames[0]!);
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expect(() => artboardProp.set(bindable)).not.toThrow();
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});
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});
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describe.skip('Image Properties', () => {
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it('imageProperty("bound_image") returns defined property', async () => {
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const file = await loadFile(DATABINDING_IMAGES);
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const vm = file.viewModelByName('MyViewModel');
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expectDefined(vm);
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const instance = vm.createInstanceByIndex(0);
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expectDefined(instance);
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const imageProp = instance.imageProperty('bound_image');
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expectDefined(imageProp);
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});
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});

‎example/assets/rive/artboard_db_test.riv‎

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‎example/assets/rive/databinding_images.riv‎

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‎example/assets/rive/databinding_lists.riv‎

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‎example/package.json‎

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"@react-native-community/cli": "18.0.0",
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"@react-native-community/cli-platform-android": "18.0.0",
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"@react-native-community/cli-platform-ios": "18.0.0",
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"@react-native-harness/platform-android": "^1.0.0-alpha.20",
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"@react-native-harness/platform-apple": "^1.0.0-alpha.20",
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"@react-native-harness/platform-android": "^1.0.0-alpha.25",
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"@react-native-harness/platform-apple": "^1.0.0-alpha.25",
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"@react-native/babel-preset": "0.79.2",
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"@react-native/metro-config": "0.79.2",
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"@react-native/typescript-config": "0.79.2",
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"babel-plugin-react-compiler": "^1.0.0",
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"deep-equal": "^2.2.3",
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"react-native-builder-bob": "^0.40.10",
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"react-native-harness": "^1.0.0-alpha.20"
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"react-native-harness": "^1.0.0-alpha.25"
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},
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"engines": {
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"node": ">=18"

‎ios/HybridRiveFile.swift‎

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}
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func viewModelByIndex(index: Double) throws -> (any HybridViewModelSpec)? {
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guard index >= 0 else { return nil }
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guard let vm = riveFile?.viewModel(at: UInt(index)) else { return nil }
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return HybridViewModel(viewModel: vm)
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}

‎ios/HybridViewModel.swift‎

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var modelName: String { viewModel?.name ?? "" }
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func createInstanceByIndex(index: Double) throws -> (any HybridViewModelInstanceSpec)? {
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guard index >= 0 else { return nil }
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guard let viewModel = viewModel,
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let vmi = viewModel.createInstance(fromIndex: UInt(index)) else { return nil }
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return HybridViewModelInstance(viewModelInstance: vmi)

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