1 files changed, 104 insertions, 0 deletions
diff --git a/editor/libeditor/tests/test_nsIEditorMailSupport_insertTextWithQuotations.html b/editor/libeditor/tests/test_nsIEditorMailSupport_insertTextWithQuotations.html
new file mode 100644
index 0000000000..921e137fa8
--- /dev/null
+++ b/editor/libeditor/tests/test_nsIEditorMailSupport_insertTextWithQuotations.html
@@ -0,0 +1,104 @@
+<!DOCTYPE>
+<html>
+<head>
+  <title>Test for nsIEditorMailSupport.insertTextWithQuotations()</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" href="/tests/SimpleTest/test.css">
+</head>
+<body>
+<div contenteditable></div>
+<iframe srcdoc="<body contenteditable></body>"></iframe>
+<script>
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.waitForFocus(async () => {
+  const iframe = document.querySelector("iframe");
+  await new Promise(resolve => {
+    if (iframe.contentDocument?.readyState == "complete") {
+      resolve();
+      return;
+    }
+    iframe.addEventListener("load", resolve, {once: true});
+  });
+
+  function testInDiv() {
+    const inPlaintextMode = getEditor(window).flags & SpecialPowers.Ci.nsIEditor.eEditorPlaintextMask;
+    const inReadonlyMode = getEditor(window).flags & SpecialPowers.Ci.nsIEditor.eEditorReadonlyMask;
+    const editorDescription = `(readonly=${!!inReadonlyMode}, plaintext=${!!inPlaintextMode})`;
+    const editor = document.querySelector("div[contenteditable]");
+    editor.innerHTML = "";
+    editor.focus();
+    getEditorMailSupport(window).insertTextWithQuotations(
+      "This is Text\n\n> This is a quote."
+    );
+    is(
+      editor.innerHTML,
+      'This is Text<br><br><span style="white-space: pre-wrap;">&gt; This is a quote.</span><br>',
+      `The <div contenteditable> should have the expected innerHTML ${editorDescription}`
+    );
+    is(
+      editor.querySelector("span")?.getAttribute("_moz_quote"),
+      "true",
+      `The <span> element in the <div contenteditable> should have _moz_quote="true" ${editorDescription}`
+    );
+  }
+
+  function testInBody() {
+    const inPlaintextMode = getEditor(iframe.contentWindow).flags & SpecialPowers.Ci.nsIEditor.eEditorPlaintextMask;
+    const inReadonlyMode = getEditor(iframe.contentWindow).flags & SpecialPowers.Ci.nsIEditor.eEditorReadonlyMask;
+    const editorDescription = `(readonly=${!!inReadonlyMode}, plaintext=${!!inPlaintextMode})`;
+    const editor = iframe.contentDocument.body;
+    editor.innerHTML = "";
+    iframe.contentWindow.getSelection().collapse(document.body, 0);
+    getEditorMailSupport(iframe.contentWindow).insertTextWithQuotations(
+      "This is Text\n\n> This is a quote."
+    );
+    is(
+      editor.innerHTML,
+      'This is Text<br><br><span style="white-space: pre-wrap; display: block; width: 98vw;">&gt; This is a quote.</span><br>',
+      `The <body> should have the expected innerHTML ${editorDescription}`
+    );
+    is(
+      editor.querySelector("span")?.getAttribute("_moz_quote"),
+      "true",
+      `The <span> element in the <body> should have _moz_quote="true" ${editorDescription}`
+    );
+  }
+
+  for (const testReadOnly of [false, true]) {
+    // Even if the HTMLEditor is readonly, XPCOM API should keep working.
+    if (testReadOnly) {
+      getEditor(window).flags |= SpecialPowers.Ci.nsIEditor.eEditorReadonlyMask;
+      getEditor(iframe.contentWindow).flags |= SpecialPowers.Ci.nsIEditor.eEditorReadonlyMask;
+    } else {
+      getEditor(window).flags &= ~SpecialPowers.Ci.nsIEditor.eEditorReadonlyMask;
+      getEditor(iframe.contentWindow).flags &= ~SpecialPowers.Ci.nsIEditor.eEditorReadonlyMask;
+    }
+
+    getEditor(window).flags &= ~SpecialPowers.Ci.nsIEditor.eEditorPlaintextMask;
+    getEditor(iframe.contentWindow).flags &= ~SpecialPowers.Ci.nsIEditor.eEditorPlaintextMask;
+    testInDiv();
+    testInBody();
+
+    getEditor(window).flags |= SpecialPowers.Ci.nsIEditor.eEditorPlaintextMask;
+    getEditor(iframe.contentWindow).flags |= SpecialPowers.Ci.nsIEditor.eEditorPlaintextMask;
+    testInDiv();
+    testInBody();
+  }
+
+  SimpleTest.finish();
+});
+
+function getEditor(aWindow) {
+  const editingSession = SpecialPowers.wrap(aWindow).docShell.editingSession;
+  return editingSession.getEditorForWindow(aWindow);
+}
+
+function getEditorMailSupport(aWindow) {
+  return getEditor(aWindow).QueryInterface(SpecialPowers.Ci.nsIEditorMailSupport);
+}
+</script>
+</body>
+
+</html>