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-rw-r--r--devtools/shared/tests/xpcshell/test_isSet.js27
1 files changed, 27 insertions, 0 deletions
diff --git a/devtools/shared/tests/xpcshell/test_isSet.js b/devtools/shared/tests/xpcshell/test_isSet.js
new file mode 100644
index 0000000000..11cbb3bba6
--- /dev/null
+++ b/devtools/shared/tests/xpcshell/test_isSet.js
@@ -0,0 +1,27 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test ThreadSafeDevToolsUtils.isSet
+
+function run_test() {
+ const { isSet } = DevToolsUtils;
+
+ equal(isSet(new Set()), true);
+ equal(isSet(new Map()), false);
+ equal(isSet({}), false);
+ equal(isSet("I swear I'm a Set"), false);
+ equal(isSet(5), false);
+
+ const systemPrincipal = Cc["@mozilla.org/systemprincipal;1"].createInstance(
+ Ci.nsIPrincipal
+ );
+ const sandbox = new Cu.Sandbox(systemPrincipal);
+
+ equal(isSet(Cu.evalInSandbox("new Set()", sandbox)), true);
+ equal(isSet(Cu.evalInSandbox("new Map()", sandbox)), false);
+ equal(isSet(Cu.evalInSandbox("({})", sandbox)), false);
+ equal(isSet(Cu.evalInSandbox("'I swear I\\'m a Set'", sandbox)), false);
+ equal(isSet(Cu.evalInSandbox("5", sandbox)), false);
+}