1 files changed, 395 insertions, 0 deletions
diff --git a/remote/cdp/test/browser/runtime/browser_callFunctionOn_returnByValue.js b/remote/cdp/test/browser/runtime/browser_callFunctionOn_returnByValue.js
new file mode 100644
index 0000000000..8ad34e9a56
--- /dev/null
+++ b/remote/cdp/test/browser/runtime/browser_callFunctionOn_returnByValue.js
@@ -0,0 +1,395 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+add_task(async function returnAsObjectTypes({ client }) {
+  const { Runtime } = client;
+
+  const { id: executionContextId } = await enableRuntime(client);
+
+  const expressions = [
+    { expression: "({foo:true})", type: "object", subtype: undefined },
+    { expression: "Symbol('foo')", type: "symbol", subtype: undefined },
+    { expression: "new Promise(()=>{})", type: "object", subtype: "promise" },
+    { expression: "new Int8Array(8)", type: "object", subtype: "typedarray" },
+    { expression: "new WeakMap()", type: "object", subtype: "weakmap" },
+    { expression: "new WeakSet()", type: "object", subtype: "weakset" },
+    { expression: "new Map()", type: "object", subtype: "map" },
+    { expression: "new Set()", type: "object", subtype: "set" },
+    { expression: "/foo/", type: "object", subtype: "regexp" },
+    { expression: "[1, 2]", type: "object", subtype: "array" },
+    { expression: "new Proxy({}, {})", type: "object", subtype: "proxy" },
+    { expression: "new Date()", type: "object", subtype: "date" },
+    {
+      expression: "document",
+      type: "object",
+      subtype: "node",
+      className: "HTMLDocument",
+      description: "#document",
+    },
+    {
+      expression: `{{
+        const div = document.createElement('div');
+        div.id = "foo";
+        return div;
+      }}`,
+      type: "object",
+      subtype: "node",
+      className: "HTMLDivElement",
+      description: "div#foo",
+    },
+  ];
+
+  for (const entry of expressions) {
+    const { expression, type, subtype, className, description } = entry;
+
+    const { result } = await Runtime.callFunctionOn({
+      functionDeclaration: `() => ${expression}`,
+      executionContextId,
+    });
+
+    is(result.type, type, "The type is correct");
+    is(result.subtype, subtype, "The subtype is correct");
+    ok(!!result.objectId, "Got an object id");
+    if (className) {
+      is(result.className, className, "The className is correct");
+    }
+    if (description) {
+      is(result.description, description, "The description is correct");
+    }
+  }
+});
+
+add_task(async function returnAsObjectDifferentObjectIds({ client }) {
+  const { Runtime } = client;
+
+  const { id: executionContextId } = await enableRuntime(client);
+
+  const expressions = [{}, "document"];
+  for (const expression of expressions) {
+    const { result: result1 } = await Runtime.callFunctionOn({
+      functionDeclaration: `() => ${JSON.stringify(expression)}`,
+      executionContextId,
+    });
+    const { result: result2 } = await Runtime.callFunctionOn({
+      functionDeclaration: `() => ${JSON.stringify(expression)}`,
+      executionContextId,
+    });
+    is(
+      result1.objectId,
+      result2.objectId,
+      `Different object ids returned for ${expression}`
+    );
+  }
+});
+
+add_task(async function returnAsObjectPrimitiveTypes({ client }) {
+  const { Runtime } = client;
+
+  const { id: executionContextId } = await enableRuntime(client);
+
+  const expressions = [42, "42", true, 4.2];
+  for (const expression of expressions) {
+    const { result } = await Runtime.callFunctionOn({
+      functionDeclaration: `() => ${JSON.stringify(expression)}`,
+      executionContextId,
+    });
+    is(result.value, expression, `Evaluating primitive '${expression}' works`);
+    is(result.type, typeof expression, `${expression} type is correct`);
+  }
+});
+
+add_task(async function returnAsObjectNotSerializable({ client }) {
+  const { Runtime } = client;
+
+  const { id: executionContextId } = await enableRuntime(client);
+
+  const notSerializableNumbers = {
+    number: ["-0", "NaN", "Infinity", "-Infinity"],
+    bigint: ["42n"],
+  };
+
+  for (const type in notSerializableNumbers) {
+    for (const expression of notSerializableNumbers[type]) {
+      const { result } = await Runtime.callFunctionOn({
+        functionDeclaration: `() => ${expression}`,
+        executionContextId,
+      });
+      Assert.deepEqual(
+        result,
+        {
+          type,
+          unserializableValue: expression,
+          description: expression,
+        },
+        `Evaluating unserializable '${expression}' works`
+      );
+    }
+  }
+});
+
+// `null` is special as it has its own subtype, is of type 'object'
+// but is returned as a value, without an `objectId` attribute
+add_task(async function returnAsObjectNull({ client }) {
+  const { Runtime } = client;
+
+  const { id: executionContextId } = await enableRuntime(client);
+
+  const { result } = await Runtime.callFunctionOn({
+    functionDeclaration: "() => null",
+    executionContextId,
+  });
+  Assert.deepEqual(
+    result,
+    {
+      type: "object",
+      subtype: "null",
+      value: null,
+    },
+    "Null type is correct"
+  );
+});
+
+// undefined doesn't work with JSON.stringify, so test it independently
+add_task(async function returnAsObjectUndefined({ client }) {
+  const { Runtime } = client;
+
+  const { id: executionContextId } = await enableRuntime(client);
+
+  const { result } = await Runtime.callFunctionOn({
+    functionDeclaration: "() => undefined",
+    executionContextId,
+  });
+  Assert.deepEqual(
+    result,
+    {
+      type: "undefined",
+    },
+    "Undefined type is correct"
+  );
+});
+
+add_task(async function returnByValueInvalidTypes({ client }) {
+  const { Runtime } = client;
+
+  const { id: executionContextId } = await enableRuntime(client);
+
+  for (const returnByValue of [null, 1, "foo", [], {}]) {
+    await Assert.rejects(
+      Runtime.callFunctionOn({
+        functionDeclaration: "",
+        executionContextId,
+        returnByValue,
+      }),
+      err => err.message.includes("returnByValue: boolean value expected"),
+      "returnByValue: boolean value expected"
+    );
+  }
+});
+
+add_task(async function returnByValueCyclicValue({ client }) {
+  const { Runtime } = client;
+
+  const { id: executionContextId } = await enableRuntime(client);
+
+  const functionDeclarations = [
+    "() => { const b = { a: 1}; b.b = b; return b; }",
+    "() => window",
+  ];
+
+  for (const functionDeclaration of functionDeclarations) {
+    await Assert.rejects(
+      Runtime.callFunctionOn({
+        functionDeclaration,
+        executionContextId,
+        returnByValue: true,
+      }),
+      err => err.message.includes("Object reference chain is too long"),
+      "Object reference chain is too long"
+    );
+  }
+});
+
+add_task(async function returnByValueNotPossible({ client }) {
+  const { Runtime } = client;
+
+  const { id: executionContextId } = await enableRuntime(client);
+
+  const functionDeclarations = [
+    "() => Symbol('foo')",
+    "() => [Symbol('foo')]",
+    "() => { return {a: Symbol('foo')}; }",
+  ];
+
+  for (const functionDeclaration of functionDeclarations) {
+    await Assert.rejects(
+      Runtime.callFunctionOn({
+        functionDeclaration,
+        executionContextId,
+        returnByValue: true,
+      }),
+      err => err.message.includes("Object couldn't be returned by value"),
+      "Object couldn't be returned by value"
+    );
+  }
+});
+
+add_task(async function returnByValue({ client }) {
+  const { Runtime } = client;
+
+  const { id: executionContextId } = await enableRuntime(client);
+
+  const values = [
+    null,
+    42,
+    42.0,
+    "42",
+    true,
+    false,
+    { foo: true },
+    { foo: { bar: 42, str: "str", array: [1, 2, 3] } },
+    [42, "42", true],
+    [{ foo: true }],
+  ];
+
+  for (const value of values) {
+    const { result } = await Runtime.callFunctionOn({
+      functionDeclaration: `() => (${JSON.stringify(value)})`,
+      executionContextId,
+      returnByValue: true,
+    });
+
+    Assert.deepEqual(
+      result,
+      {
+        type: typeof value,
+        value,
+        description: value != null ? value.toString() : value,
+      },
+      "The returned value is the same than the input value"
+    );
+  }
+});
+
+add_task(async function returnByValueNotSerializable({ client }) {
+  const { Runtime } = client;
+
+  const { id: executionContextId } = await enableRuntime(client);
+
+  const notSerializableNumbers = {
+    number: ["-0", "NaN", "Infinity", "-Infinity"],
+    bigint: ["42n"],
+  };
+
+  for (const type in notSerializableNumbers) {
+    for (const unserializableValue of notSerializableNumbers[type]) {
+      const { result } = await Runtime.callFunctionOn({
+        functionDeclaration: `() => (${unserializableValue})`,
+        executionContextId,
+        returnByValue: true,
+      });
+
+      Assert.deepEqual(
+        result,
+        {
+          type,
+          unserializableValue,
+          description: unserializableValue,
+        },
+        "The returned value is the same than the input value"
+      );
+    }
+  }
+});
+
+// Test undefined individually as JSON.stringify doesn't return a string
+add_task(async function returnByValueUndefined({ client }) {
+  const { Runtime } = client;
+
+  const { id: executionContextId } = await enableRuntime(client);
+
+  const { result } = await Runtime.callFunctionOn({
+    functionDeclaration: "() => {}",
+    executionContextId,
+    returnByValue: true,
+  });
+
+  Assert.deepEqual(
+    result,
+    {
+      type: "undefined",
+    },
+    "Undefined type is correct"
+  );
+});
+
+add_task(async function returnByValueArguments({ client }) {
+  const { Runtime } = client;
+
+  const { id: executionContextId } = await enableRuntime(client);
+
+  const values = [
+    42,
+    42.0,
+    "42",
+    true,
+    false,
+    null,
+    { foo: true },
+    { foo: { bar: 42, str: "str", array: [1, 2, 3] } },
+    [42, "42", true],
+    [{ foo: true }],
+  ];
+
+  for (const value of values) {
+    const { result } = await Runtime.callFunctionOn({
+      functionDeclaration: "a => a",
+      arguments: [{ value }],
+      executionContextId,
+      returnByValue: true,
+    });
+
+    Assert.deepEqual(
+      result,
+      {
+        type: typeof value,
+        value,
+        description: value != null ? value.toString() : value,
+      },
+      "The returned value is the same than the input value"
+    );
+  }
+});
+
+add_task(async function returnByValueArgumentsNotSerializable({ client }) {
+  const { Runtime } = client;
+
+  const { id: executionContextId } = await enableRuntime(client);
+
+  const notSerializableNumbers = {
+    number: ["-0", "NaN", "Infinity", "-Infinity"],
+    bigint: ["42n"],
+  };
+
+  for (const type in notSerializableNumbers) {
+    for (const unserializableValue of notSerializableNumbers[type]) {
+      const { result } = await Runtime.callFunctionOn({
+        functionDeclaration: "a => a",
+        arguments: [{ unserializableValue }],
+        executionContextId,
+        returnByValue: true,
+      });
+
+      Assert.deepEqual(
+        result,
+        {
+          type,
+          unserializableValue,
+          description: unserializableValue,
+        },
+        "The returned value is the same than the input value"
+      );
+    }
+  }
+});