reinstate tests

Author: Rich-Harris

packages/svelte/tests/runtime-runes/samples/non-local-mutation-inherited-owner-6/_config.js

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+import { tick } from 'svelte';
+import { test } from '../../test';
+
+/** @type {typeof console.warn} */
+let warn;
+
+/** @type {any[]} */
+let warnings = [];
+
+export default test({
+	compileOptions: {
+		dev: true
+	},
+
+	before_test: () => {
+		warn = console.warn;
+
+		console.warn = (...args) => {
+			warnings.push(...args);
+		};
+	},
+
+	after_test: () => {
+		console.warn = warn;
+		warnings = [];
+	},
+
+	async test({ assert, target }) {
+		const btn = target.querySelector('button');
+
+		await btn?.click();
+		await tick();
+		assert.deepEqual(warnings.length, 0);
+	}
+});

packages/svelte/tests/runtime-runes/samples/non-local-mutation-inherited-owner-6/main.svelte

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+<script lang="ts">
+	import { setContext } from 'svelte';
+	import Sub from './sub.svelte';
+
+	class Person1 {
+		value = $state({ person: 'John', age: 33 })
+	}
+	const class_nested_state = $state(new Person1());
+
+	class Person2 {
+		person = $state('John');
+		age = $state(33);
+	}
+	const state_nested_class = $state({ value: new Person2() });
+
+	const nested_state = $state({ person: 'John', age: 33 });
+
+	setContext('foo', {
+		nested_state,
+		get class_nested_state() { return class_nested_state },
+		get state_nested_class() { return state_nested_class }
+	})
+</script>
+
+<Sub {class_nested_state} {state_nested_class} {nested_state} />

packages/svelte/tests/runtime-runes/samples/non-local-mutation-inherited-owner-6/sub.svelte

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+<script>
+	import { getContext } from "svelte";
+
+	const foo = getContext('foo')
+</script>
+
+<button onclick={() => {
+	foo.class_nested_state.value.age++;
+	foo.state_nested_class.value.age++;
+	foo.nested_state.age++;
+}}>mutate</button>