1 files changed, 75 insertions, 0 deletions
diff --git a/devtools/shared/commands/script/tests/browser_script_command_execute_throw.js b/devtools/shared/commands/script/tests/browser_script_command_execute_throw.js
new file mode 100644
index 0000000000..8680193ecb
--- /dev/null
+++ b/devtools/shared/commands/script/tests/browser_script_command_execute_throw.js
@@ -0,0 +1,75 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Testing evaluating thowing expressions
+const {
+  DevToolsServer,
+} = require("resource://devtools/server/devtools-server.js");
+
+add_task(async () => {
+  const tab = await addTab(`data:text/html;charset=utf-8,Test throw`);
+  const commands = await CommandsFactory.forTab(tab);
+  await commands.targetCommand.startListening();
+
+  const falsyValues = [
+    "-0",
+    "null",
+    "undefined",
+    "Infinity",
+    "-Infinity",
+    "NaN",
+  ];
+  for (const value of falsyValues) {
+    const response = await commands.scriptCommand.execute(`throw ${value};`);
+    is(
+      response.exception.type,
+      value,
+      `Got the expected value for response.exception.type when throwing "${value}"`
+    );
+  }
+
+  const identityTestValues = [false, 0];
+  for (const value of identityTestValues) {
+    const response = await commands.scriptCommand.execute(`throw ${value};`);
+    is(
+      response.exception,
+      value,
+      `Got the expected value for response.exception when throwing "${value}"`
+    );
+  }
+
+  const symbolTestValues = [
+    ["Symbol.iterator", "Symbol(Symbol.iterator)"],
+    ["Symbol('foo')", "Symbol(foo)"],
+    ["Symbol()", "Symbol()"],
+  ];
+  for (const [expr, message] of symbolTestValues) {
+    const response = await commands.scriptCommand.execute(`throw ${expr};`);
+    is(
+      response.exceptionMessage,
+      message,
+      `Got the expected value for response.exceptionMessage when throwing "${expr}"`
+    );
+  }
+
+  const longString = Array(DevToolsServer.LONG_STRING_LENGTH + 1).join("a"),
+    shortedString = longString.substring(
+      0,
+      DevToolsServer.LONG_STRING_INITIAL_LENGTH
+    );
+  const response = await commands.scriptCommand.execute(
+    "throw '" + longString + "';"
+  );
+  is(
+    response.exception.initial,
+    shortedString,
+    "Got the expected value for exception.initial when throwing a longString"
+  );
+  is(
+    response.exceptionMessage.initial,
+    shortedString,
+    "Got the expected value for exceptionMessage.initial when throwing a longString"
+  );
+});