update tests

test/spa/one.txt

@@ -0,0 +1 @@
+one

test/spa/spa.js

@@ -0,0 +1,28 @@
+'use strict'
+const test = require('tape')
+const request = require('req-then')
+const LocalWebServer = require('../../')
+const c = require('../common')
+
+test('spa', function (t) {
+  t.plan(6)
+  const ws = new LocalWebServer()
+  ws.addSpa('one.txt')
+  ws.addStatic(__dirname)
+  const server = ws.getServer()
+  server.listen(8100, () => {
+    request('http://localhost:8100/asdf', { headers: { accept: 'text/html' } })
+      .then(c.checkResponse(t, 200, /one/))
+      /* html requests for missing files with extensions do not redirect to spa */
+      .then(() => request('http://localhost:8100/asdf.txt', { headers: { accept: 'text/html' } }))
+      .then(c.checkResponse(t, 404))
+      /* existing static file */
+      .then(() => request('http://localhost:8100/two.txt'))
+      .then(c.checkResponse(t, 200, /two/))
+      /* not a text/html request - does not redirect to spa */
+      .then(() => request('http://localhost:8100/asdf', { headers: { accept: 'application/json' } }))
+      .then(c.checkResponse(t, 404))
+      .then(server.close.bind(server))
+      .catch(c.fail(t))
+  })
+})

test/spa/two.txt

@@ -0,0 +1 @@
+two