test

test/runtime/samples/each-block-keyed-component-action/Component.svelte

@@ -0,0 +1,5 @@
+<script>
+  export let action;
+</script>
+
+<div use:action />

test/runtime/samples/each-block-keyed-component-action/_config.js

@@ -0,0 +1,21 @@
+export default {
+	test({ assert, component, raf }) {
+		assert.equal(component.count, 0);
+
+		component.arr = ["2"];
+
+		assert.equal(component.count, 1);
+
+		component.arr = ["1", "2"];
+
+		assert.equal(component.count, 2);
+
+		component.arr = ["2", "1"];
+
+		assert.equal(component.count, 2);
+
+		component.arr = [];
+
+		assert.equal(component.count, 0);
+	},
+};

test/runtime/samples/each-block-keyed-component-action/main.svelte

@@ -0,0 +1,17 @@
+<script>
+  import Component from "./Component.svelte";
+  export let arr = [];
+  export let count = 0;
+  function action(node, params) {
+    count += 1;
+    return {
+      destroy() {
+        count -= 1;
+      }
+    };
+  }
+</script>
+
+{#each arr as item (item)}
+  <Component {action} />
+{/each}