1 files changed, 174 insertions, 0 deletions
diff --git a/devtools/server/tests/xpcshell/test_objectgrips-18.js b/devtools/server/tests/xpcshell/test_objectgrips-18.js
new file mode 100644
index 0000000000..d5213fdd39
--- /dev/null
+++ b/devtools/server/tests/xpcshell/test_objectgrips-18.js
@@ -0,0 +1,174 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+/* eslint-disable no-shadow, max-nested-callbacks */
+
+"use strict";
+
+Services.prefs.setBoolPref("security.allow_eval_with_system_principal", true);
+registerCleanupFunction(() => {
+  Services.prefs.clearUserPref("security.allow_eval_with_system_principal");
+});
+
+add_task(
+  threadFrontTest(async ({ threadFront, debuggee }) => {
+    const packet = await executeOnNextTickAndWaitForPause(
+      eval_code,
+      threadFront
+    );
+
+    const [grip] = packet.frame.arguments;
+
+    const objectFront = threadFront.pauseGrip(grip);
+
+    // Checks the result of enumProperties.
+    let response = await objectFront.enumProperties({});
+    await check_enum_properties(response);
+
+    // Checks the result of enumSymbols.
+    response = await objectFront.enumSymbols();
+    await check_enum_symbols(response);
+
+    await threadFront.resume();
+
+    function eval_code() {
+      debuggee.eval(
+        function stopMe(arg1) {
+          debugger;
+        }.toString()
+      );
+
+      debuggee.eval(`
+        var obj = Array.from({length: 10})
+          .reduce((res, _, i) => {
+            res["property_" + i + "_key"] = "property_" + i + "_value";
+            res[Symbol("symbol_" + i)] = "symbol_" + i + "_value";
+            return res;
+          }, {});
+
+        obj[Symbol()] = "first unnamed symbol";
+        obj[Symbol()] = "second unnamed symbol";
+        obj[Symbol.iterator] = function* () {
+          yield 1;
+          yield 2;
+        };
+
+        stopMe(obj);
+      `);
+    }
+
+    async function check_enum_properties(iterator) {
+      equal(iterator.count, 10, "iterator.count has the expected value");
+
+      info("Check iterator.slice response for all properties");
+      let sliceResponse = await iterator.slice(0, iterator.count);
+      ok(
+        sliceResponse &&
+          Object.getOwnPropertyNames(sliceResponse).includes("ownProperties"),
+        "The response object has an ownProperties property"
+      );
+
+      let { ownProperties } = sliceResponse;
+      let names = Object.keys(ownProperties);
+      equal(
+        names.length,
+        iterator.count,
+        "The response has the expected number of properties"
+      );
+      for (let i = 0; i < names.length; i++) {
+        const name = names[i];
+        equal(name, `property_${i}_key`);
+        equal(ownProperties[name].value, `property_${i}_value`);
+      }
+
+      info("Check iterator.all response");
+      const allResponse = await iterator.all();
+      deepEqual(
+        allResponse,
+        sliceResponse,
+        "iterator.all response has the expected data"
+      );
+
+      info("Check iterator response for 2 properties only");
+      sliceResponse = await iterator.slice(2, 2);
+      ok(
+        sliceResponse &&
+          Object.getOwnPropertyNames(sliceResponse).includes("ownProperties"),
+        "The response object has an ownProperties property"
+      );
+
+      ownProperties = sliceResponse.ownProperties;
+      names = Object.keys(ownProperties);
+      equal(
+        names.length,
+        2,
+        "The response has the expected number of properties"
+      );
+      equal(names[0], `property_2_key`);
+      equal(names[1], `property_3_key`);
+      equal(ownProperties[names[0]].value, `property_2_value`);
+      equal(ownProperties[names[1]].value, `property_3_value`);
+    }
+
+    async function check_enum_symbols(iterator) {
+      equal(iterator.count, 13, "iterator.count has the expected value");
+
+      info("Check iterator.slice response for all symbols");
+      let sliceResponse = await iterator.slice(0, iterator.count);
+      ok(
+        sliceResponse &&
+          Object.getOwnPropertyNames(sliceResponse).includes("ownSymbols"),
+        "The response object has an ownSymbols property"
+      );
+
+      let { ownSymbols } = sliceResponse;
+      equal(
+        ownSymbols.length,
+        iterator.count,
+        "The response has the expected number of symbols"
+      );
+      for (let i = 0; i < 10; i++) {
+        const symbol = ownSymbols[i];
+        equal(symbol.name, `Symbol(symbol_${i})`);
+        equal(symbol.descriptor.value, `symbol_${i}_value`);
+      }
+      const firstUnnamedSymbol = ownSymbols[10];
+      equal(firstUnnamedSymbol.name, "Symbol()");
+      equal(firstUnnamedSymbol.descriptor.value, "first unnamed symbol");
+
+      const secondUnnamedSymbol = ownSymbols[11];
+      equal(secondUnnamedSymbol.name, "Symbol()");
+      equal(secondUnnamedSymbol.descriptor.value, "second unnamed symbol");
+
+      const iteratorSymbol = ownSymbols[12];
+      equal(iteratorSymbol.name, "Symbol(Symbol.iterator)");
+      equal(iteratorSymbol.descriptor.value.getGrip().class, "Function");
+
+      info("Check iterator.all response");
+      const allResponse = await iterator.all();
+      deepEqual(
+        allResponse,
+        sliceResponse,
+        "iterator.all response has the expected data"
+      );
+
+      info("Check iterator response for 2 symbols only");
+      sliceResponse = await iterator.slice(9, 2);
+      ok(
+        sliceResponse &&
+          Object.getOwnPropertyNames(sliceResponse).includes("ownSymbols"),
+        "The response object has an ownSymbols property"
+      );
+
+      ownSymbols = sliceResponse.ownSymbols;
+      equal(
+        ownSymbols.length,
+        2,
+        "The response has the expected number of symbols"
+      );
+      equal(ownSymbols[0].name, "Symbol(symbol_9)");
+      equal(ownSymbols[0].descriptor.value, "symbol_9_value");
+      equal(ownSymbols[1].name, "Symbol()");
+      equal(ownSymbols[1].descriptor.value, "first unnamed symbol");
+    }
+  })
+);