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-rw-r--r--testing/xpcshell/example/unit/test_add_setup.js23
1 files changed, 23 insertions, 0 deletions
diff --git a/testing/xpcshell/example/unit/test_add_setup.js b/testing/xpcshell/example/unit/test_add_setup.js
new file mode 100644
index 0000000000..a647f108ee
--- /dev/null
+++ b/testing/xpcshell/example/unit/test_add_setup.js
@@ -0,0 +1,23 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+let someVar = 1;
+
+add_task(() => {
+ Assert.ok(false, "I should not be called!");
+});
+
+/* eslint-disable mozilla/reject-addtask-only */
+add_task(() => {
+ Assert.equal(
+ someVar,
+ 2,
+ "Setup should have run, even though this is the only test."
+ );
+}).only();
+
+add_setup(() => {
+ someVar = 2;
+});