1 files changed, 150 insertions, 0 deletions
diff --git a/e2e/scroll.test.js b/e2e/scroll.test.js
new file mode 100644
index 0000000..7b13a72
--- /dev/null
+++ b/e2e/scroll.test.js
@@ -0,0 +1,150 @@
+const express = require('express');
+const lanthan = require('lanthan');
+const path = require('path');
+const assert = require('power-assert');
+
+const Key = lanthan.Key;
+
+const newApp = () => {
+  let app = express();
+  app.get('/', (req, res) => {
+    res.send(`<!DOCTYPEhtml>
+<html lang="en">
+  <body style="width:10000px; height:10000px"></body>
+</html">`);
+  });
+  return app;
+};
+
+describe("scroll test", () => {
+
+  const port = 12321;
+  let http;
+  let firefox;
+  let session;
+  let body;
+
+  before(async() => {
+    http = newApp().listen(port);
+
+    firefox = await lanthan.firefox();
+    await firefox.session.installAddon(path.join(__dirname, '..'));
+    session = firefox.session;
+  });
+
+  after(async() => {
+    if (firefox) {
+      await firefox.close();
+    }
+    http.close();
+  });
+
+  beforeEach(async() => {
+    await session.navigateTo(`http://127.0.0.1:${port}`);
+    body = await session.findElementByCSS('body');
+  });
+
+
+  it('scrolls up by k', async () => {
+    await body.sendKeys('j');
+
+    let pageYOffset = await session.executeScript(() => window.pageYOffset);
+    assert.equal(pageYOffset, 64);
+  });
+
+  it('scrolls down by j', async () => {
+    await session.executeScript(() => window.scrollTo(0, 200));
+    await body.sendKeys('k');
+
+    let pageYOffset = await session.executeScript(() => window.pageYOffset);
+    assert.equal(pageYOffset, 136);
+  });
+
+  it('scrolls left by h', async () => {
+    await session.executeScript(() => window.scrollTo(100, 100));
+    await body.sendKeys('h');
+
+    let pageXOffset = await session.executeScript(() => window.pageXOffset);
+    assert.equal(pageXOffset, 36);
+  });
+
+  it('scrolls left by l', async () => {
+    await session.executeScript(() => window.scrollTo(100, 100));
+    await body.sendKeys('l');
+
+    let pageXOffset = await session.executeScript(() => window.pageXOffset);
+    assert.equal(pageXOffset, 164);
+  });
+
+  it('scrolls top by gg', async () => {
+    await session.executeScript(() => window.scrollTo(0, 100));
+    await body.sendKeys('g', 'g');
+
+    let pageYOffset = await session.executeScript(() => window.pageYOffset);
+    assert.equal(pageYOffset, 0);
+  });
+
+  it('scrolls bottom by G', async () => {
+    await session.executeScript(() => window.scrollTo(0, 100));
+    await body.sendKeys(Key.Shift, 'g');
+
+    let pageYOffset = await session.executeScript(() => window.pageYOffset);
+    assert(pageYOffset > 5000);
+  });
+
+  it('scrolls bottom by 0', async () => {
+    await session.executeScript(() => window.scrollTo(0, 100));
+    await body.sendKeys(Key.Shift, '0');
+
+    let pageXOffset = await session.executeScript(() => window.pageXOffset);
+    assert(pageXOffset === 0);
+  });
+
+  it('scrolls bottom by $', async () => {
+    await session.executeScript(() => window.scrollTo(0, 100));
+    await body.sendKeys(Key.Shift, '$');
+
+    let pageXOffset = await session.executeScript(() => window.pageXOffset);
+    assert(pageXOffset > 5000);
+  });
+
+  it('scrolls bottom by <C-U>', async () => {
+    await session.executeScript(() => window.scrollTo(0, 1000));
+    await body.sendKeys(Key.Control, 'u');
+
+    let pageHeight = 
+      await session.executeScript(() => window.document.documentElement.clientHeight);
+    let pageYOffset = await session.executeScript(() => window.pageYOffset);
+    assert(Math.abs(pageYOffset - (1000 - Math.floor(pageHeight / 2))) < 5);
+  });
+
+  it('scrolls bottom by <C-D>', async () => {
+    await session.executeScript(() => window.scrollTo(0, 1000));
+    await body.sendKeys(Key.Control, 'd');
+
+    let pageHeight = 
+      await session.executeScript(() => window.document.documentElement.clientHeight);
+    let pageYOffset = await session.executeScript(() => window.pageYOffset);
+    assert(Math.abs(pageYOffset - (1000 + Math.floor(pageHeight / 2))) < 5);
+  });
+
+  it('scrolls bottom by <C-B>', async () => {
+    await session.executeScript(() => window.scrollTo(0, 1000));
+    await body.sendKeys(Key.Control, 'b');
+
+    let pageHeight = 
+      await session.executeScript(() => window.document.documentElement.clientHeight);
+    let pageYOffset = await session.executeScript(() => window.pageYOffset);
+    assert(Math.abs(pageYOffset - (1000 - pageHeight)) < 5);
+  });
+
+  it('scrolls bottom by <C-F>', async () => {
+    await session.executeScript(() => window.scrollTo(0, 1000));
+    await body.sendKeys(Key.Control, 'f');
+
+    let pageHeight = 
+      await session.executeScript(() => window.document.documentElement.clientHeight);
+    let pageYOffset = await session.executeScript(() => window.pageYOffset);
+    assert(Math.abs(pageYOffset - (1000 + pageHeight)) < 5);
+  });
+});