mirror of https://github.com/sveltejs/svelte
pull contextual deps through for member exprs in this bindings - fixes #1916
parent
88b6a26a35
commit
3a7b9adc7f
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export default {
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html: `<div>foo</div><div>bar</div><div>baz</div>
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<span>foo</span><span>bar</span><span>baz</span>
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<ul><li><p>foo</p></li><li><p>bar</p></li><li><p>baz</p></li></ul>
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<ul><li><hr /></li><li><hr /></li><li><hr /></li></ul>`,
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test({ assert, component, target }) {
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let elems = target.querySelectorAll('div');
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assert.equal(component.divs.length, 3, 'three divs are registered (unkeyed array)');
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component.divs.forEach((e, i) => {
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assert.equal(e, elems[i], `div ${i} is correct (unkeyed array)`);
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});
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elems = target.querySelectorAll('span');
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assert.equal(Object.keys(component.spans).length, 3, 'three spans are registered (unkeyed object)');
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component.items.forEach((e, i) => {
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assert.equal(component.spans[`-${e}${i}`], elems[i], `span -${e}${i} is correct (unkeyed object)`);
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});
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elems = target.querySelectorAll('p');
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assert.equal(component.ps.length, 3, 'three ps are registered (keyed array)');
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component.ps.forEach((e, i) => {
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assert.equal(e, elems[i], `p ${i} is correct (keyed array)`);
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});
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elems = target.querySelectorAll('hr');
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assert.equal(Object.keys(component.hrs).length, 3, 'three hrs are registered (keyed object)');
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component.items.forEach((e, i) => {
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assert.equal(component.hrs[e], elems[i], `hr ${e} is correct (keyed object)`);
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});
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component.items = ['foo', 'baz'];
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assert.equal(component.divs.length, 3, 'the divs array is still 3 long');
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assert.equal(component.divs[2], null, 'the last div is unregistered');
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assert.equal(component.ps[2], null, 'the last p is unregistered');
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assert.equal(component.spans['-bar1'], null, 'the bar span is unregisterd');
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assert.equal(component.hrs.bar, null, 'the bar hr is unregisterd');
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elems = target.querySelectorAll('div');
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component.divs.forEach((e, i) => {
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assert.equal(e, elems[i], `div ${i} is still correct`);
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});
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elems = target.querySelectorAll('span');
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component.items.forEach((e, i) => {
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assert.equal(component.spans[`-${e}${i}`], elems[i], `span -${e}${i} is still correct`);
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});
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elems = target.querySelectorAll('p');
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component.ps.forEach((e, i) => {
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assert.equal(e, elems[i], `p ${i} is still correct`);
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});
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elems = target.querySelectorAll('hr');
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component.items.forEach((e, i) => {
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assert.equal(component.hrs[e], elems[i], `hr ${e} is still correct`);
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});
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}
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};
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@ -0,0 +1,28 @@
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<script>
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export let items = ['foo', 'bar', 'baz'];
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export let divs = [];
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export let spans = {};
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export let ps = [];
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export let hrs = {};
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const prefix = '-';
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</script>
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{#each items as item, j}
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<div bind:this={divs[j]}>{item}</div>
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{/each}
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{#each Object.entries(items) as [ key, val ] }
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<span bind:this="{spans[prefix + val + key]}">{val}</span>
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{/each}
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<ul>
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{#each items as thing, j (thing)}
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<li><p bind:this="{ps[j]}">{thing}</p></li>
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{/each}
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</ul>
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<ul>
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{#each items as sure, j (sure)}
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<li><hr bind:this="{hrs[sure]}" /></li>
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{/each}
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</ul>
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