1 files changed, 73 insertions, 0 deletions
diff --git a/docshell/test/browser/browser_bug1691153.js b/docshell/test/browser/browser_bug1691153.js
new file mode 100644
index 0000000000..b6d465393f
--- /dev/null
+++ b/docshell/test/browser/browser_bug1691153.js
@@ -0,0 +1,73 @@
+"use strict";
+
+add_task(async () => {
+  const TEST_PATH = getRootDirectory(gTestPath).replace(
+    "chrome://mochitests/content",
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    "http://example.com"
+  );
+
+  const HTML_URI = TEST_PATH + "file_bug1691153.html";
+
+  // Opening the page that contains the iframe
+  let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser);
+  let browser = tab.linkedBrowser;
+  let browserLoaded = BrowserTestUtils.browserLoaded(
+    browser,
+    true,
+    HTML_URI,
+    true
+  );
+  info("new tab loaded");
+
+  BrowserTestUtils.loadURI(browser, HTML_URI);
+  await browserLoaded;
+  info("The test page has loaded!");
+
+  let first_message_promise = SpecialPowers.spawn(
+    browser,
+    [],
+    async function() {
+      let blobPromise = new Promise((resolve, reject) => {
+        content.addEventListener("message", event => {
+          if (event.data.bloburl) {
+            info("Sanity check: recvd blob URL as " + event.data.bloburl);
+            resolve(event.data.bloburl);
+          }
+        });
+      });
+      content.postMessage("getblob", "*");
+      return blobPromise;
+    }
+  );
+  info("The test page has loaded!");
+  let blob_url = await first_message_promise;
+
+  Assert.ok(blob_url.startsWith("blob:"), "Sanity check: recvd blob");
+  info(`Received blob URL message from content: ${blob_url}`);
+  // try to open the blob in a new tab, manually created by the user
+  let tab2 = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    blob_url,
+    true,
+    false,
+    true
+  );
+
+  let principal = gBrowser.selectedTab.linkedBrowser._contentPrincipal;
+  Assert.ok(
+    !principal.isSystemPrincipal,
+    "Newly opened blob shouldn't be Systemprincipal"
+  );
+  Assert.ok(
+    !principal.isExpandedPrincipal,
+    "Newly opened blob shouldn't be ExpandedPrincipal"
+  );
+  Assert.ok(
+    principal.isContentPrincipal,
+    "Newly opened blob tab should be ContentPrincipal"
+  );
+
+  BrowserTestUtils.removeTab(tab);
+  BrowserTestUtils.removeTab(tab2);
+});