fix: failing markdown live preview focus integ tests

Author: abose

src/extensionsIntegrated/Phoenix-live-preview/main.js

@@ -95,6 +95,7 @@ define(function (require, exports, module) {
         if($iframe && $iframe[0]) {
             const iframeDom = $iframe[0];
             iframeDom.contentWindow.postMessage({
+                type: "WHO_AM_I_RESPONSE",
                 isTauri: Phoenix.browser.isTauri
             }, "*"); // this is not sensitive info, and is only dispatched if requested by the iframe
         }

src/extensionsIntegrated/Phoenix-live-preview/markdown.html

@@ -25,9 +25,13 @@
                 return; // Ignore messages from unexpected origins
             }
 
-            window.__PHOENIX_EMBED_INFO = {
-                isTauri: event.data.isTauri
-            };
+            if(event.data.type === "WHO_AM_I_RESPONSE") {
+                window.__PHOENIX_EMBED_INFO = {
+                    isTauri: event.data.isTauri
+                };
+            } else if(event.data.type === "_TEST_FOCUS_CLICK") { // for integ tests
+                document.body.click();
+            }
         });
         if(window.self !== window.parent){
             // in an iframe

test/spec/LiveDevelopmentMultiBrowser-test.js

@@ -618,11 +618,17 @@ define(function (require, exports, module) {
             await awaitsForDone(SpecRunnerUtils.openProjectFiles(["readme.md"]),
                 "readme.md");
 
+            // now make the active editor loose focus and click on the markdown md for it to
+            // trigger focus.
             await awaits(300);
             let outerIFrame = testWindow.document.getElementById("panel-live-preview-frame");
             expect(outerIFrame.src.endsWith("readme.md")).toBeTrue();
             outerIFrame.focus();
             expect(testWindow.document.activeElement).toEqual(outerIFrame);
+            outerIFrame.contentWindow.postMessage({
+                type: "_TEST_FOCUS_CLICK",
+                isTauri: Phoenix.browser.isTauri
+            }, "*"); // this is not sensitive info, and is only dispatched if requested by the iframe
 
             // Editor lost focus, it will gain back as the editor detects it lost focus to live preview pane in 100 ms
             await awaits(500);