Add more test cases

test/runtime/samples/error-handling-action-destroy/_config.js

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+export default {
+    test({ assert, component }) {
+        assert.equal(component.error, false);
+
+        component.visible = false;
+
+        assert.equal(component.error, true);
+    }
+};

test/runtime/samples/error-handling-action-destroy/main.svelte

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+<script>
+    import { onError } from "svelte";
+
+    export var visible = true;
+    export var error = false;
+
+    onError(e => {
+        error = true;
+    });
+
+    function action(node, arg) {
+        return {
+            destroy() {
+                a.b;
+            }
+        }
+    }
+</script>
+
+{#if visible}
+    <div use:action />
+{/if}

test/runtime/samples/error-handling-action-with-arguments/_config.js

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+export default {
+    test({ assert, component }) {
+        assert.equal(component.error, true);
+    }
+};

test/runtime/samples/error-handling-action-with-arguments/main.svelte

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+<script>
+    import { onError } from "svelte";
+
+    export var error = false;
+
+    onError(e => {
+        error = true;
+    });
+
+    function action(node, arg) {
+        a.b;
+    }
+</script>
+
+<div use:action={10} />

test/runtime/samples/error-handling-action/_config.js

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+export default {
+    test({ assert, component }) {
+        assert.equal(component.error, true);
+    }
+};

test/runtime/samples/error-handling-action/main.svelte

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+<script>
+    import { onError } from "svelte";
+
+    export var error = false;
+
+    onError(e => {
+        error = true;
+    });
+
+    function action() {
+        a.b;
+    }
+</script>
+
+<div use:action />

test/runtime/samples/error-handling-anonymous-event/_config.js

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+export default {
+    async test({ assert, component, target, window }) {
+        const button = target.querySelector('button');
+        const event = new window.MouseEvent('click');
+
+        await button.dispatchEvent(event);
+
+        assert.equal(component.error, true);
+    }
+};

test/runtime/samples/error-handling-anonymous-event/main.svelte

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+<script>
+    import { onError } from "svelte";
+
+    var a = {};
+    export var error = false;
+
+    onError(e => {
+        error = true;
+    });
+</script>
+
+<button on:click={() => console.log(a.b.c)}></button>

test/runtime/samples/error-handling-attribute/_config.js

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+export default {
+    test({ assert, component }) {
+        assert.equal(component.error, true);
+    }
+};

test/runtime/samples/error-handling-attribute/main.svelte

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+<script>
+    import { onError } from "svelte";
+
+    var a = {};
+    export var error = false;
+
+    onError(e => {
+        error = true;
+    });
+</script>
+
+<a href={a.b.c}></a>

test/runtime/samples/error-handling-binding-reactive/_config.js

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+export default {
+    async test({ assert, component, target, window }) {
+        const button = target.querySelector('button');
+        const event = new window.MouseEvent('click');
+
+        await button.dispatchEvent(event);
+
+        assert.equal(component.error, true);
+    }
+};

test/runtime/samples/error-handling-binding-reactive/main.svelte

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+<script>
+    import { onError } from "svelte";
+
+    var a = {
+        b: {
+            c: "10"
+        }
+    };
+    export var error = false;
+
+    onError(e => {
+        error = true;
+    });
+
+    function clickEvent() {
+        a = {};
+    }
+</script>
+
+<input bind:value={a.b.c} />
+<button on:click={clickEvent}></button>

test/runtime/samples/error-handling-binding/_config.js

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+export default {
+    test({ assert, component }) {
+        assert.equal(component.error, true);
+    }
+};

test/runtime/samples/error-handling-binding/main.svelte

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+<script>
+    import { onError } from "svelte";
+
+    var a = {};
+    export var error = false;
+
+    onError(e => {
+        error = true;
+    });
+</script>
+
+<input bind:value={a.b.c} />