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Custom each behavior (track-array) should survive an undefined item in the array #20793

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Custom each behavior (track-array) should survive an undefined item in the array #20793

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18 changes: 18 additions & 0 deletions packages/ember-template-compiler/tests/plugins/assert-array-test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -38,5 +38,23 @@
this.assertHTML('<ul><li>2</li><li>4</li><li>6</li></ul>');
this.assertStableRerender();
}

['@test survives undefined item with key'](assert) {

Check failure on line 42 in packages/ember-template-compiler/tests/plugins/assert-array-test.js

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'assert' is defined but never used
// Intentionally double all of the values to verify that this
// version of the `array` function is used.
function array(...values) {
return values.map((value) => value * 2);
}

let Root = defineComponent(
{ array },
`<ul>{{#each (array undefined) key="anything" as |item|}}<li>{{item}}</li>{{/each}}</ul>`
);
this.registerComponent('root', { ComponentClass: Root });

this.render('<Root />');
this.assertHTML('<ul><li></li></ul>');
this.assertStableRerender();
}
}
);
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