1 files changed, 43 insertions, 0 deletions
diff --git a/devtools/shared/tests/xpcshell/test_fetch-resource.js b/devtools/shared/tests/xpcshell/test_fetch-resource.js
new file mode 100644
index 0000000000..a320d63151
--- /dev/null
+++ b/devtools/shared/tests/xpcshell/test_fetch-resource.js
@@ -0,0 +1,43 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+// Tests for DevToolsUtils.fetch on resource:// URI's.
+
+const URL_FOUND = "resource://devtools/shared/DevToolsUtils.js";
+const URL_NOT_FOUND = "resource://devtools/this/is/not/here.js";
+
+// Disable `xpc::IsInAutomation()` so we don't crash when accessing a
+// nonexistent resource URI.
+Services.prefs.setBoolPref(
+  "security.turn_off_all_security_so_that_viruses_can_take_over_this_computer",
+  false
+);
+
+/**
+ * Test that non-existent files are handled correctly.
+ */
+add_task(async function test_missing() {
+  await DevToolsUtils.fetch(URL_NOT_FOUND).then(
+    result => {
+      info(result);
+      ok(false, "fetch resolved unexpectedly for non-existent resource:// URI");
+    },
+    () => {
+      ok(true, "fetch rejected as the resource:// URI was non-existent.");
+    }
+  );
+});
+
+/**
+ * Tests that existing files are handled correctly.
+ */
+add_task(async function test_normal() {
+  await DevToolsUtils.fetch(URL_FOUND).then(result => {
+    notDeepEqual(
+      result.content,
+      "",
+      "resource:// URI seems to be read correctly."
+    );
+  });
+});