1 files changed, 70 insertions, 0 deletions
diff --git a/devtools/client/webconsole/test/browser/browser_webconsole_string.js b/devtools/client/webconsole/test/browser/browser_webconsole_string.js
new file mode 100644
index 0000000000..341f2bac10
--- /dev/null
+++ b/devtools/client/webconsole/test/browser/browser_webconsole_string.js
@@ -0,0 +1,70 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_URI =
+  "http://example.com/browser/devtools/client/webconsole/test/browser/test-console.html";
+
+add_task(async function () {
+  const hud = await openNewTabAndConsole(TEST_URI);
+
+  info("Test that console.log with a string argument does not include quotes");
+  let receivedMessages = waitForMessageByType(hud, "stringLog", ".console-api");
+
+  await SpecialPowers.spawn(gBrowser.selectedBrowser, [], function () {
+    content.wrappedJSObject.stringLog();
+  });
+  await receivedMessages;
+  ok(true, "console.log result does not have quotes");
+
+  info(
+    "Test that console.log with empty string argument render <empty string>"
+  );
+  receivedMessages = waitForMessageByType(
+    hud,
+    "hello <empty string>",
+    ".console-api"
+  );
+
+  await ContentTask.spawn(gBrowser.selectedBrowser, {}, function () {
+    const name = "";
+    content.wrappedJSObject.console.log("hello", name);
+  });
+  await receivedMessages;
+  ok(true, "console.log empty string argument renders as expected");
+
+  info(
+    "Test that log with object containing an empty string property renders as expected"
+  );
+  receivedMessages = waitForMessageByType(
+    hud,
+    `Object { a: "" }`,
+    ".console-api"
+  );
+
+  await ContentTask.spawn(gBrowser.selectedBrowser, {}, function () {
+    content.wrappedJSObject.console.log({ a: "" });
+  });
+  await receivedMessages;
+  ok(true, "object with empty string property renders as expected");
+
+  info("evaluating a string constant");
+  let msg = await executeAndWaitForResultMessage(
+    hud,
+    '"string\\nconstant"',
+    "constant"
+  );
+  let body = msg.node.querySelector(".message-body");
+  // On the other hand, a string constant result should be quoted, but
+  // newlines should be let through.
+  ok(
+    body.textContent.includes('"string\nconstant"'),
+    `found expected text - "${body.textContent}"`
+  );
+
+  info("evaluating an empty string constant");
+  msg = await executeAndWaitForResultMessage(hud, '""', '""');
+  body = msg.node.querySelector(".message-body");
+  ok(body.textContent.includes('""'), `found expected text`);
+});