1 files changed, 98 insertions, 0 deletions
diff --git a/js/src/jsapi-tests/testResult.cpp b/js/src/jsapi-tests/testResult.cpp
new file mode 100644
index 0000000000..5d8d0f88ea
--- /dev/null
+++ b/js/src/jsapi-tests/testResult.cpp
@@ -0,0 +1,98 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "jsapi.h"      // JS_NewPlainObject
+#include "js/Result.h"  // Error, Ok, Result
+#include "js/String.h"  // JS_NewStringCopyZ
+#include "jsapi-tests/tests.h"
+
+JS::Result<> SimpleSuccess(JSContext*) { return JS::Ok(); }
+
+JS::Result<> SimpleFailure(JSContext*) { return JS::Result<>{JS::Error()}; }
+
+JS::Result<int> PODSuccess(JSContext*) { return 42; }
+
+JS::Result<int> PODFailure(JSContext*) { return JS::Result<int>{JS::Error()}; }
+
+JS::Result<JSObject*> ObjectSuccess(JSContext* cx) {
+  JS::RootedObject obj{cx, JS_NewPlainObject(cx)};
+  MOZ_RELEASE_ASSERT(obj);
+  return obj.get();
+}
+
+JS::Result<JSObject*> ObjectFailure(JSContext*) {
+  return JS::Result<JSObject*>{JS::Error()};
+}
+
+JS::Result<JSString*> StringSuccess(JSContext* cx) {
+  JS::RootedString str{cx, JS_NewStringCopyZ(cx, "foo")};
+  MOZ_RELEASE_ASSERT(str);
+  return str.get();
+}
+
+JS::Result<JSString*> StringFailure(JSContext*) {
+  return JS::Result<JSString*>{JS::Error()};
+}
+
+BEGIN_TEST(testResult_SimpleSuccess) {
+  JS::Result<> result = SimpleSuccess(cx);
+  CHECK(result.isOk());
+  return true;
+}
+END_TEST(testResult_SimpleSuccess)
+
+BEGIN_TEST(testResult_SimpleFailure) {
+  JS::Result<> result = SimpleFailure(cx);
+  CHECK(result.isErr());
+  return true;
+}
+END_TEST(testResult_SimpleFailure)
+
+BEGIN_TEST(testResult_PODSuccess) {
+  JS::Result<int> result = PODSuccess(cx);
+  CHECK(result.isOk());
+  CHECK_EQUAL(result.unwrap(), 42);
+  CHECK_EQUAL(result.inspect(), 42);
+  return true;
+}
+END_TEST(testResult_PODSuccess)
+
+BEGIN_TEST(testResult_PODFailure) {
+  JS::Result<int> result = PODFailure(cx);
+  CHECK(result.isErr());
+  return true;
+}
+END_TEST(testResult_PODFailure)
+
+BEGIN_TEST(testResult_ObjectSuccess) {
+  JS::Result<JSObject*> result = ObjectSuccess(cx);
+  CHECK(result.isOk());
+  CHECK(result.inspect() != nullptr);
+  CHECK(result.unwrap() != nullptr);
+  return true;
+}
+END_TEST(testResult_ObjectSuccess)
+
+BEGIN_TEST(testResult_ObjectFailure) {
+  JS::Result<JSObject*> result = ObjectFailure(cx);
+  CHECK(result.isErr());
+  return true;
+}
+END_TEST(testResult_ObjectFailure)
+
+BEGIN_TEST(testResult_StringSuccess) {
+  JS::Result<JSString*> result = StringSuccess(cx);
+  CHECK(result.isOk());
+  CHECK(result.inspect() != nullptr);
+  CHECK(result.unwrap() != nullptr);
+  return true;
+}
+END_TEST(testResult_StringSuccess)
+
+BEGIN_TEST(testResult_StringFailure) {
+  JS::Result<JSString*> result = StringFailure(cx);
+  CHECK(result.isErr());
+  return true;
+}
+END_TEST(testResult_StringFailure)