Add test

Author: prichodko

test.js

@@ -0,0 +1,21 @@
+'use strict'
+let test = require('ava')
+let { createElement: h } = require('react')
+let ReactTestRenderer = require('react-test-renderer')
+let useWindowScrollPosition = require('./')
+
+function render(val) {
+  return ReactTestRenderer.create(val)
+}
+
+test(t => {
+  function Component() {
+    let position = useWindowScrollPosition()
+    return h('div', position)
+  }
+
+  let input = render(h(Component))
+
+  t.is(input.toJSON().props.x, 0)
+  t.is(input.toJSON().props.y, 0)
+})