failing test for #910

test/runtime/samples/binding-input-checkbox-indeterminate/_config.js

@@ -0,0 +1,41 @@
+export default {
+	data: {
+		indeterminate: true,
+	},
+
+	html: `
+		<input type="checkbox">
+		<p>checked? false</p>
+		<p>indeterminate? true</p>
+	`,
+
+	test(assert, component, target, window) {
+		const input = target.querySelector('input');
+		assert.equal(input.checked, true);
+
+		const event = new window.Event('change');
+
+		input.checked = true;
+		input.dispatchEvent(event);
+
+		assert.equal(component.get('indeterminate'), false);
+		assert.equal(component.get('checked'), true);
+		assert.equal(target.innerHTML, `
+			<input type="checkbox">
+			<p>checked? true</p>
+			<p>indeterminate? false</p>
+		`);
+
+		component.set({ indeterminate: true });
+		assert.equal(input.indeterminate, true);
+		assert.equal(input.checked, false);
+		assert.equal(target.innerHTML, `
+			<input type="checkbox">
+			<p>checked? false</p>
+			<p>indeterminate? true</p>
+		`);
+
+		// TODO what is the behaviour when setting both `checked`
+		// and `indeterminate` to conflicting values simultaneously?
+	},
+};

test/runtime/samples/binding-input-checkbox-indeterminate/main.html

@@ -0,0 +1,3 @@
+<input type='checkbox' bind:checked bind:indeterminate>
+<p>checked? {{checked}}</p>
+<p>indeterminate? {{indeterminate}}</p>