1 files changed, 40 insertions, 0 deletions
diff --git a/dom/base/test/unit/test_chromeutils_getXPCOMErrorName.js b/dom/base/test/unit/test_chromeutils_getXPCOMErrorName.js
new file mode 100644
index 0000000000..f7d6a89e71
--- /dev/null
+++ b/dom/base/test/unit/test_chromeutils_getXPCOMErrorName.js
@@ -0,0 +1,40 @@
+"use strict";
+
+// Test ChromeUtils.getXPCOMErrorName
+
+add_task(function test_getXPCOMErrorName() {
+  info("Force the initialization of NSS to get the error names right");
+  Cc["@mozilla.org/psm;1"].getService(Ci.nsISupports);
+
+  Assert.equal(
+    ChromeUtils.getXPCOMErrorName(Cr.NS_OK),
+    "NS_OK",
+    "getXPCOMErrorName works for NS_OK"
+  );
+
+  Assert.equal(
+    ChromeUtils.getXPCOMErrorName(Cr.NS_ERROR_FAILURE),
+    "NS_ERROR_FAILURE",
+    "getXPCOMErrorName works for NS_ERROR_FAILURE"
+  );
+
+  const nssErrors = Cc["@mozilla.org/nss_errors_service;1"].getService(
+    Ci.nsINSSErrorsService
+  );
+  Assert.equal(
+    ChromeUtils.getXPCOMErrorName(
+      nssErrors.getXPCOMFromNSSError(Ci.nsINSSErrorsService.NSS_SEC_ERROR_BASE)
+    ),
+    "NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_SECURITY, SEC_ERROR_IO)",
+    "getXPCOMErrorName works for NSS_SEC_ERROR_BASE"
+  );
+  // See https://searchfox.org/mozilla-central/rev/a48e21143960b383004afa9ff9411c5cf6d5a958/security/nss/lib/util/secerr.h#20
+  const SEC_ERROR_BAD_DATA = Ci.nsINSSErrorsService.NSS_SEC_ERROR_BASE + 2;
+  Assert.equal(
+    ChromeUtils.getXPCOMErrorName(
+      nssErrors.getXPCOMFromNSSError(SEC_ERROR_BAD_DATA)
+    ),
+    "NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_SECURITY, SEC_ERROR_BAD_DATA)",
+    "getXPCOMErrorName works for NSS's SEC_ERROR_BAD_DATA"
+  );
+});