Bug 1326225 - Fix un-imported fetch use in NormandyApi.jsm r=Gijs

See https://developer.mozilla.org/en-US/docs/Mozilla/Projects/Mochitest#How_do_I_test_issues_which_only_show_up_when_tests_are_run_across_domains.3F
for info on how the test server was set up for testing that fetch was
used correctly.

r=Gijs

MozReview-Commit-ID: CNH6SQ6gEGU

--HG--
extra : rebase_source : a492de75e4189f10371427a4f6c342a672ea57cd

browser/extensions/shield-recipe-client/lib/NormandyApi.jsm

@@ -10,6 +10,7 @@ Cu.import("resource://gre/modules/Services.jsm");
 Cu.import("resource://gre/modules/Task.jsm");
 Cu.import("resource://gre/modules/CanonicalJSON.jsm");
 Cu.import("resource://gre/modules/Log.jsm");
+Cu.importGlobalProperties(["fetch"]); /* globals fetch */
 
 this.EXPORTED_SYMBOLS = ["NormandyApi"];
 

browser/extensions/shield-recipe-client/test/.eslintrc.js

@@ -8,6 +8,7 @@ module.exports = {
     is: false,
     isnot: false,
     ok: false,
+    SpecialPowers: false,
   },
   rules: {
     "spaced-comment": 2,

browser/extensions/shield-recipe-client/test/browser.ini

@@ -4,3 +4,6 @@
 [browser_Storage.js]
 [browser_Heartbeat.js]
 skip-if = true # bug 1325409
+[browser_NormandyApi.js]
+  support-files =
+    test_server.sjs

browser/extensions/shield-recipe-client/test/browser_NormandyApi.js

@@ -0,0 +1,21 @@
+"use strict";
+
+const {utils: Cu} = Components;
+Cu.import("resource://shield-recipe-client/lib/NormandyApi.jsm", this);
+
+add_task(function* () {
+  // Point the add-on to the test server.
+  yield SpecialPowers.pushPrefEnv({
+    set: [
+      [
+        "extensions.shield-recipe-client.api_url",
+        "http://mochi.test:8888/browser/browser/extensions/shield-recipe-client/test",
+      ]
+    ]
+  })
+
+  // Test that NormandyApi can fetch from the test server.
+  const response = yield NormandyApi.get("test_server.sjs");
+  const data = yield response.json();
+  Assert.deepEqual(data, {test: "data"}, "NormandyApi returned incorrect server data.");
+});

browser/extensions/shield-recipe-client/test/test_server.sjs

@@ -0,0 +1,8 @@
+function handleRequest(request, response) {
+  // Allow cross-origin, so you can XHR to it!
+  response.setHeader("Access-Control-Allow-Origin", "*", false);
+  // Avoid confusing cache behaviors
+  response.setHeader("Cache-Control", "no-cache", false);
+  response.setHeader("Content-Type", "application/json", false);
+  response.write(JSON.stringify({test: "data"}))
+}

testing/profiles/prefs_general.js

@@ -306,8 +306,8 @@ user_pref("browser.search.countryCode", "US");
 user_pref("browser.search.geoSpecificDefaults", false);
 
 // Make sure self support doesn't hit the network.
-user_pref("browser.selfsupport.url", "https://%(server)s/selfsupport-dummy/");
-user_pref("extensions.shield-recipe-client.api_url", "https://%(server)s/selfsupport-dummy/");
+user_pref("browser.selfsupport.url", "https://example.com/selfsupport-dummy/");
+user_pref("extensions.shield-recipe-client.api_url", "https://example.com/selfsupport-dummy/");
 
 user_pref("media.eme.enabled", true);