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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| import { createDynamicSelector } from '../src'; | ||
| import DebugInfoCheckUtil from './util/debugInfoCheckUtil'; | ||
|
|
||
| describe('exceptions', () => { | ||
| test('throws exceptions when uncaught', () => { | ||
| const childSelector = createDynamicSelector((getState) => { | ||
| return getState('a'); | ||
| }); | ||
| const parentSelector = createDynamicSelector( | ||
| (_getState, { multiplier }: { multiplier: number }) => { | ||
| const result = childSelector() * multiplier; | ||
| if (result % 2) { | ||
| throw new Error('Odd number!'); | ||
| } | ||
| return result; | ||
| }, | ||
| ); | ||
|
|
||
| const childSelectorCheck = new DebugInfoCheckUtil(childSelector); | ||
| const parentSelectorCheck10 = new DebugInfoCheckUtil(parentSelector, { multiplier: 10 }); | ||
| const parentSelectorCheck11 = new DebugInfoCheckUtil(parentSelector, { multiplier: 11 }); | ||
|
|
||
| let state = { a: 1 }; | ||
|
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||
| expect(parentSelector(state, { multiplier: 10 })).toEqual(10); | ||
| parentSelectorCheck10.expectInvoked('run'); | ||
| childSelectorCheck.expectInvoked('run'); | ||
|
|
||
| expect(() => parentSelector(state, { multiplier: 11 })).toThrowError('Odd number!'); | ||
| parentSelectorCheck11.expectInvoked('aborted'); | ||
| childSelectorCheck.expectInvoked('skipped'); | ||
|
|
||
| // '10' and child are still cached, '11' is not | ||
| expect(parentSelector.hasCachedResult(state, { multiplier: 10 })).toEqual(true); | ||
| expect(parentSelector.getCachedResult(state, { multiplier: 10 })).toEqual(10); | ||
| expect(childSelector.hasCachedResult(state)).toEqual(true); | ||
| }); | ||
|
|
||
| test('catch exception thrown by child', () => { | ||
| const childSelector = createDynamicSelector((getState) => { | ||
| const result = getState('a'); | ||
| if (result % 2) { | ||
| throw new Error('Odd number!'); | ||
| } | ||
| return result; | ||
| }); | ||
| const parentSelector = createDynamicSelector( | ||
| (_getState, { multiplier }: { multiplier: number }) => { | ||
| let result = 0; | ||
| try { | ||
| result = childSelector() * multiplier; | ||
| } catch (e) {} | ||
|
|
||
| return result; | ||
| }, | ||
| ); | ||
|
|
||
| let state = { a: 2 }; | ||
|
|
||
| expect(parentSelector(state, { multiplier: 10 })).toEqual(20); | ||
|
|
||
| state = { a: 3 }; | ||
|
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| expect(parentSelector(state, { multiplier: 10 })).toEqual(0); | ||
| // Parent is cached, child is not | ||
| expect(parentSelector.hasCachedResult(state, { multiplier: 10 })).toEqual(true); | ||
| expect(parentSelector.getCachedResult(state, { multiplier: 10 })).toEqual(0); | ||
| expect(childSelector.hasCachedResult(state)).toEqual(false); | ||
| }); | ||
|
|
||
| test('parent overrides exceptions with onError', () => { | ||
| const childSelector = createDynamicSelector((getState) => { | ||
| return getState('a'); | ||
| }); | ||
| const parentSelector = createDynamicSelector( | ||
| (_getState, { multiplier }: { multiplier: number }) => { | ||
| const result = childSelector() * multiplier; | ||
| if (result % 2) { | ||
| throw new Error('Odd number!'); | ||
| } | ||
| return result; | ||
| }, | ||
| { | ||
| onError: (_error, [_state, { multiplier }]) => { | ||
| // Silly recovery: use the multiplier as the return value | ||
| return multiplier; | ||
| }, | ||
| }, | ||
| ); | ||
|
|
||
| const childSelectorCheck = new DebugInfoCheckUtil(childSelector); | ||
| const parentSelectorCheck10 = new DebugInfoCheckUtil(parentSelector, { multiplier: 10 }); | ||
| const parentSelectorCheck11 = new DebugInfoCheckUtil(parentSelector, { multiplier: 11 }); | ||
|
|
||
| let state = { a: 3 }; | ||
|
|
||
| expect(parentSelector(state, { multiplier: 10 })).toEqual(30); | ||
| parentSelectorCheck10.expectInvoked('run'); | ||
| childSelectorCheck.expectInvoked('run'); | ||
|
|
||
| expect(parentSelector(state, { multiplier: 11 })).toEqual(11); | ||
| parentSelectorCheck11.expectInvoked('aborted'); | ||
| childSelectorCheck.expectInvoked('skipped'); | ||
|
|
||
| // Since we overrode the value, everything is cached | ||
| expect(parentSelector.hasCachedResult(state, { multiplier: 10 })).toEqual(true); | ||
| expect(parentSelector.getCachedResult(state, { multiplier: 10 })).toEqual(30); | ||
| expect(parentSelector.hasCachedResult(state, { multiplier: 11 })).toEqual(true); | ||
| expect(parentSelector.getCachedResult(state, { multiplier: 11 })).toEqual(11); | ||
| expect(childSelector.hasCachedResult(state)).toEqual(true); | ||
| }); | ||
| }); |