Add test for capture_state and inject_state

test/js/samples/capture-inject-dev-only/_config.js

@@ -0,0 +1,5 @@
+export default {
+	options: {
+		dev: false
+	}
+};

test/js/samples/capture-inject-dev-only/expected.js

@@ -0,0 +1,79 @@
+/* generated by Svelte vX.Y.Z */
+import {
+	SvelteComponent,
+	append,
+	detach,
+	element,
+	init,
+	insert,
+	listen,
+	noop,
+	safe_not_equal,
+	set_data,
+	space,
+	text
+} from "svelte/internal";
+
+function create_fragment(ctx) {
+	var p, t0, t1, input, dispose;
+
+	return {
+		c() {
+			p = element("p");
+			t0 = text(ctx.foo);
+			t1 = space();
+			input = element("input");
+			dispose = listen(input, "input", ctx.input_input_handler);
+		},
+
+		m(target, anchor) {
+			insert(target, p, anchor);
+			append(p, t0);
+			insert(target, t1, anchor);
+			insert(target, input, anchor);
+
+			input.value = ctx.foo;
+		},
+
+		p(changed, ctx) {
+			if (changed.foo) {
+				set_data(t0, ctx.foo);
+			}
+
+			if (changed.foo && (input.value !== ctx.foo)) input.value = ctx.foo;
+		},
+
+		i: noop,
+		o: noop,
+
+		d(detaching) {
+			if (detaching) {
+				detach(p);
+				detach(t1);
+				detach(input);
+			}
+
+			dispose();
+		}
+	};
+}
+
+function instance($$self, $$props, $$invalidate) {
+	let foo = "bar";
+
+	function input_input_handler() {
+		foo = this.value;
+		$$invalidate('foo', foo);
+	}
+
+	return { foo, input_input_handler };
+}
+
+class Component extends SvelteComponent {
+	constructor(options) {
+		super();
+		init(this, options, instance, create_fragment, safe_not_equal, []);
+	}
+}
+
+export default Component;

test/js/samples/capture-inject-dev-only/input.svelte

@@ -0,0 +1,5 @@
+<script>
+    let foo = "bar";
+</script>
+<p>{foo}</p>
+<input bind:value={foo}>