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feat(template-strategy): diff between tbody and tr
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| import { VirtualRepeat } from '../src/virtual-repeat'; | ||
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| export type Queue = (func: (...args: any[]) => any) => void; | ||
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| export function createAssertionQueue(): Queue { | ||
| let queue: Array<() => any> = []; | ||
| let next = () => { | ||
| if (queue.length) { | ||
| setTimeout(() => { | ||
| let func = queue.shift(); | ||
| func(); | ||
| next(); | ||
| }); | ||
| } | ||
| }; | ||
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| return (func: () => any) => { | ||
| queue.push(func); | ||
| if (queue.length === 1) { | ||
| next(); | ||
| } | ||
| }; | ||
| } | ||
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| export function validateState(virtualRepeat: VirtualRepeat, viewModel: any, itemHeight: number) { | ||
| let views = virtualRepeat.viewSlot.children; | ||
| let expectedHeight = viewModel.items.length * itemHeight; | ||
| let topBufferHeight = virtualRepeat.topBuffer.getBoundingClientRect().height; | ||
| let bottomBufferHeight = virtualRepeat.bottomBuffer.getBoundingClientRect().height; | ||
| let renderedItemsHeight = views.length * itemHeight; | ||
| expect(topBufferHeight + renderedItemsHeight + bottomBufferHeight).toBe(expectedHeight); | ||
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| if (viewModel.items.length > views.length) { | ||
| expect(topBufferHeight + bottomBufferHeight).toBeGreaterThan(0); | ||
| } | ||
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| // validate contextual data | ||
| for (let i = 0; i < views.length; i++) { | ||
| expect(views[i].bindingContext.item).toBe(viewModel.items[i]); | ||
| let overrideContext = views[i].overrideContext; | ||
| expect(overrideContext.parentOverrideContext.bindingContext).toBe(viewModel); | ||
| expect(overrideContext.bindingContext).toBe(views[i].bindingContext); | ||
| let first = i === 0; | ||
| let last = i === viewModel.items.length - 1; | ||
| let even = i % 2 === 0; | ||
| expect(overrideContext.$index).toBe(i); | ||
| expect(overrideContext.$first).toBe(first); | ||
| expect(overrideContext.$last).toBe(last); | ||
| expect(overrideContext.$middle).toBe(!first && !last); | ||
| expect(overrideContext.$odd).toBe(!even); | ||
| expect(overrideContext.$even).toBe(even); | ||
| } | ||
| } | ||
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| export function validateScrolledState(virtualRepeat: VirtualRepeat, viewModel: any, itemHeight: number) { | ||
| let views = virtualRepeat.viewSlot.children; | ||
| let expectedHeight = viewModel.items.length * itemHeight; | ||
| let topBufferHeight = virtualRepeat.topBuffer.getBoundingClientRect().height; | ||
| let bottomBufferHeight = virtualRepeat.bottomBuffer.getBoundingClientRect().height; | ||
| let renderedItemsHeight = views.length * itemHeight; | ||
| expect(topBufferHeight + renderedItemsHeight + bottomBufferHeight).toBe(expectedHeight); | ||
|
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| if (viewModel.items.length > views.length) { | ||
| expect(topBufferHeight + bottomBufferHeight).toBeGreaterThan(0); | ||
| } | ||
|
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| // validate contextual data | ||
| let startingLoc = viewModel.items.indexOf(views[0].bindingContext.item); | ||
| for (let i = startingLoc; i < views.length; i++) { | ||
| expect(views[i].bindingContext.item).toBe(viewModel.items[i]); | ||
| let overrideContext = views[i].overrideContext; | ||
| expect(overrideContext.parentOverrideContext.bindingContext).toBe(viewModel); | ||
| expect(overrideContext.bindingContext).toBe(views[i].bindingContext); | ||
| let first = i === 0; | ||
| let last = i === viewModel.items.length - 1; | ||
| let even = i % 2 === 0; | ||
| expect(overrideContext.$index).toBe(i); | ||
| expect(overrideContext.$first).toBe(first); | ||
| expect(overrideContext.$last).toBe(last); | ||
| expect(overrideContext.$middle).toBe(!first && !last); | ||
| expect(overrideContext.$odd).toBe(!even); | ||
| expect(overrideContext.$even).toBe(even); | ||
| } | ||
| } |
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