1 files changed, 46 insertions, 0 deletions
diff --git a/toolkit/components/viewsource/test/browser/browser_partialsource.js b/toolkit/components/viewsource/test/browser/browser_partialsource.js
new file mode 100644
index 0000000000..5efdc1c1cc
--- /dev/null
+++ b/toolkit/components/viewsource/test/browser/browser_partialsource.js
@@ -0,0 +1,46 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+const frameSource =
+  "<a href='about:mozilla'>some text</a><a id='other' href='about:about'>other text</a>";
+const sources = [
+  `<html><iframe id="f" srcdoc="${frameSource}"></iframe></html>`,
+  `<html><iframe id="f" src="https://example.com/document-builder.sjs?html=${frameSource}"></iframe></html>`,
+];
+
+add_task(async function partial_source() {
+  for (let source of sources) {
+    let tab = await BrowserTestUtils.openNewForegroundTab(
+      gBrowser,
+      "data:text/html," + source
+    );
+
+    let frameBC = gBrowser.selectedBrowser.browsingContext.children[0];
+
+    await SpecialPowers.spawn(frameBC, [], () => {
+      let element = content.document.getElementById("other");
+      content.focus();
+      content.getSelection().selectAllChildren(element);
+    });
+
+    let sourceTab = await openViewPartialSource("#other", frameBC);
+
+    let browser = gBrowser.selectedBrowser;
+    let textContent = await SpecialPowers.spawn(browser, [], async function() {
+      return content.document.body.textContent;
+    });
+    is(
+      textContent,
+      '<a id="other" href="about:about">other text</a>',
+      "Correct content loaded"
+    );
+    let selection = await SpecialPowers.spawn(browser, [], async function() {
+      return String(content.getSelection());
+    });
+    is(selection, "other text", "Correct text selected");
+
+    gBrowser.removeTab(sourceTab);
+    gBrowser.removeTab(tab);
+  }
+});