// Copyright (c) 2017-2022 Cloudflare, Inc.
// Licensed under the Apache 2.0 license found in the LICENSE file or at:
//     https://opensource.org/licenses/Apache-2.0

#include "jsg-test.h"

#include <workerd/jsg/resource-test.capnp.h>

namespace workerd::jsg::test {
namespace {

V8System v8System;
class ContextGlobalObject: public Object, public ContextGlobal {};

struct BoxContext: public ContextGlobalObject {
  JSG_RESOURCE_TYPE(BoxContext) {
    JSG_NESTED_TYPE(NumberBox);
    JSG_NESTED_TYPE(BoxBox);
  }
};
JSG_DECLARE_ISOLATE_TYPE(BoxIsolate, BoxContext, NumberBox, BoxBox);

KJ_TEST("constructors and properties") {
  Evaluator<BoxContext, BoxIsolate> e(v8System);
  e.expectEval("new NumberBox(123).value", "number", "123");
  e.expectEval("new NumberBox(123).boxed.value", "number", "123");
  e.expectEval("new BoxBox(new NumberBox(123), 321).inner.value", "number", "444");
  e.expectEval("var n = new NumberBox(123);\n"
               "n.value = 321;\n"
               "n.getValue()",
      "number", "321");
  e.expectEval("var n = new NumberBox(123);\n"
               "n.boxed = new NumberBox(321);\n"
               "n.getValue()",
      "number", "321");
  e.expectEval("new NumberBox(123) instanceof NumberBox", "boolean", "true");
  e.expectEval("new NumberBox(123) instanceof BoxBox", "boolean", "false");
}

KJ_TEST("methods") {
  Evaluator<BoxContext, BoxIsolate> e(v8System);
  e.expectEval("var n = new NumberBox(123);\n"
               "n.increment();\n"
               "n.getValue()",
      "number", "124");

  e.expectEval("var n = new NumberBox(123);\n"
               "n.incrementBy(321);\n"
               "n.getValue()",
      "number", "444");

  e.expectEval("var n = new NumberBox(123);\n"
               "n.incrementByBox(new NumberBox(321));\n"
               "n.getValue()",
      "number", "444");

  e.expectEval("var n = new NumberBox(123);\n"
               "n.add(321)",
      "number", "444");

  e.expectEval("var n = new NumberBox(123);\n"
               "n.addBox(new NumberBox(321))",
      "number", "444");

  e.expectEval("var n = new NumberBox(123);\n"
               "n.addReturnBox(321).value",
      "number", "444");

  e.expectEval("var n = new NumberBox(123);\n"
               "n.addMultiple(new NumberBox(321), 111, new NumberBox(2222))",
      "number", "2777");

  e.expectEval("var n = new NumberBox(123);\n"
               "new n.increment();",
      "throws", "TypeError: n.increment is not a constructor");
}

// ========================================================================================

struct Mixin {
  int getValue() {
    return i;
  }
  Mixin(int i): i(i) {}
  int i;
};
struct InheritsMixin: public Object, public Mixin {
  InheritsMixin(int i): Mixin(i) {}

  JSG_RESOURCE_TYPE(InheritsMixin) {
    JSG_METHOD(getValue);
  }
};
struct InheritsMixinContext: public ContextGlobalObject {
  Ref<InheritsMixin> makeInheritsMixin(jsg::Lock& js, int i) {
    return js.alloc<InheritsMixin>(i);
  }

  JSG_RESOURCE_TYPE(InheritsMixinContext) {
    JSG_METHOD(makeInheritsMixin);
  }
};
JSG_DECLARE_ISOLATE_TYPE(InheritsMixinIsolate, InheritsMixinContext, InheritsMixin);

KJ_TEST("JSG_METHODs can be implemented by mixins") {
  Evaluator<InheritsMixinContext, InheritsMixinIsolate> e(v8System);
  e.expectEval("makeInheritsMixin(12345).getValue()", "number", "12345");
}

// ========================================================================================

struct PrototypePropertyObject: public Object {
  double value;

  PrototypePropertyObject(double value): value(value) {}

  static Ref<PrototypePropertyObject> constructor(jsg::Lock& js, double value) {
    return js.alloc<PrototypePropertyObject>(value);
  }

  double getValue() {
    return value;
  }
  void setValue(double v) {
    value = v;
  }

  JSG_RESOURCE_TYPE(PrototypePropertyObject) {
    JSG_PROTOTYPE_PROPERTY(value, getValue, setValue);
  }
};

struct PropContext: public ContextGlobalObject {
  PropContext(): contextProperty(kj::str("default-context-property-value")) {}

  kj::StringPtr getContextProperty() {
    return contextProperty;
  }
  void setContextProperty(kj::String s) {
    contextProperty = kj::mv(s);
  }

  JSG_RESOURCE_TYPE(PropContext) {
    JSG_METHOD(getContextProperty);
    JSG_METHOD(setContextProperty);
    JSG_INSTANCE_PROPERTY(contextProperty, getContextProperty, setContextProperty);

    JSG_NESTED_TYPE(PrototypePropertyObject);
  }

 private:
  kj::String contextProperty;
};
JSG_DECLARE_ISOLATE_TYPE(PropIsolate, PropContext, PrototypePropertyObject);

const auto kIllegalInvocation =
    "TypeError: Illegal invocation: function called with incorrect `this` reference. "
    "See https://developers.cloudflare.com/workers/observability/errors/#illegal-invocation-errors for details."_kj;

KJ_TEST("context methods and properties") {
  Evaluator<PropContext, PropIsolate> e(v8System);
  e.expectEval("getContextProperty()", "string", "default-context-property-value");
  e.expectEval("setContextProperty('foo');\n"
               "getContextProperty()",
      "string", "foo");

  e.expectEval("contextProperty", "string", "default-context-property-value");
  e.expectEval("contextProperty = 'foo'; getContextProperty()", "string", "foo");

  e.expectEval("this.getContextProperty()", "string", "default-context-property-value");
  e.expectEval("this.setContextProperty('foo');\n"
               "getContextProperty()",
      "string", "foo");

  e.expectEval("this.contextProperty", "string", "default-context-property-value");
  e.expectEval("this.contextProperty = 'foo'; getContextProperty()", "string", "foo");

  e.expectEval("let p = new PrototypePropertyObject(123);\n"
               "let o = {};\n"
               "o.__proto__ = p.__proto__;\n"
               "o.value",
      "throws", kIllegalInvocation);
  e.expectEval("let p = new PrototypePropertyObject(123);\n"
               "let o = {};\n"
               "o.__proto__ = p.__proto__;\n"
               "o.value = 123",
      "throws", kIllegalInvocation);

  e.expectEval("class P2 extends PrototypePropertyObject {\n"
               "  constructor(v) { super(v); }\n"
               "}\n"
               "let p = new P2(123);\n"
               "p.value",
      "number", "123");
}

// ========================================================================================

struct NonConstructibleContext: public ContextGlobalObject {
  struct NonConstructible: public Object {
    NonConstructible(double x): x(x) {}

    double x;

    double method() {
      return x;
    }

    JSG_RESOURCE_TYPE(NonConstructible) {
      JSG_METHOD(method);
    }
  };

  Ref<NonConstructible> getNonConstructible(jsg::Lock& js, double x) {
    return js.alloc<NonConstructible>(x);
  }

  JSG_RESOURCE_TYPE(NonConstructibleContext) {
    JSG_NESTED_TYPE(NonConstructible);
    JSG_METHOD(getNonConstructible);
  }
};
JSG_DECLARE_ISOLATE_TYPE(
    NonConstructibleIsolate, NonConstructibleContext, NonConstructibleContext::NonConstructible);

KJ_TEST("non-constructible types can't be constructed") {
  Evaluator<NonConstructibleContext, NonConstructibleIsolate> e(v8System);
  e.expectEval("new NonConstructible().method()", "throws", "TypeError: Illegal constructor");

  e.expectEval("getNonConstructible(12321).method()", "number", "12321");

  e.expectEval("getNonConstructible(12321) instanceof NonConstructible", "boolean", "true");
}

// ========================================================================================

struct IterableContext: public ContextGlobalObject {
  class Iterable: public Object {
   public:
    static Ref<Iterable> constructor(jsg::Lock& js) {
      return js.alloc<Iterable>();
    }

    class Iterator: public Object {
     public:
      struct NextValue {
        bool done;
        Optional<int> value;
        JSG_STRUCT(done, value);
      };

      explicit Iterator(Ref<Iterable> parentParam)
          : parent(kj::mv(parentParam)),
            cursor(parent->values) {}

      NextValue next() {
        if (cursor == parent->values + sizeof(parent->values) / sizeof(*parent->values)) {
          return {.done = true, .value = kj::none};
        }
        return {.done = false, .value = *cursor++};
      }

      v8::Local<v8::Object> self(const v8::FunctionCallbackInfo<v8::Value>& info) {
        // Helper to make this iterator itself iterable. This allows code like
        // `for (let k of iterable.entries())` to work.
        return info.This();
      }

      JSG_RESOURCE_TYPE(Iterator) {
        JSG_INHERIT_INTRINSIC(v8::kIteratorPrototype);
        JSG_METHOD(next);
        JSG_ITERABLE(self);
      }

     private:
      Ref<Iterable> parent;
      int* cursor;
    };

    Ref<Iterator> entries(const v8::FunctionCallbackInfo<v8::Value>& info) {
      auto& js = jsg::Lock::from(info.GetIsolate());
      return js.alloc<Iterator>(JSG_THIS);
    }

    JSG_RESOURCE_TYPE(Iterable) {
      JSG_METHOD(entries);
      JSG_ITERABLE(entries);
    }

   private:
    int values[10] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
    // In real code, this data structure could be more complex, and we would need to think about
    // iterator invalidation, which might require storing back-references from the parent iterable
    // to all of its live iterators to make sure they can be nulled out if necessary. But then we
    // need to worry about circular references ...
  };

  JSG_RESOURCE_TYPE(IterableContext) {
    JSG_NESTED_TYPE(Iterable);
  }
};
JSG_DECLARE_ISOLATE_TYPE(IterableIsolate,
    IterableContext,
    IterableContext::Iterable,
    IterableContext::Iterable::Iterator,
    IterableContext::Iterable::Iterator::NextValue);

KJ_TEST("Iterables can be iterated") {
  Evaluator<IterableContext, IterableIsolate> e(v8System);
  e.expectEval("let results = [];"
               "for (let n of new Iterable()) { results.push(n); };"
               "'' + results.join('')",
      "string", "0123456789");
  e.expectEval("let results = [];"
               "for (let n of new Iterable().entries()) { results.push(n); };"
               "'' + results.join('')",
      "string", "0123456789");
  e.expectEval(
      "let arrayIterator = [][Symbol.iterator]();"
      "let arrayIteratorPrototype = Object.getPrototypeOf(Object.getPrototypeOf(arrayIterator));"
      "let iterator = new Iterable().entries();"
      "let iteratorPrototype = Object.getPrototypeOf(Object.getPrototypeOf(iterator));"
      "iteratorPrototype === arrayIteratorPrototype",
      "boolean", "true");
}

// ========================================================================================

struct StaticContext: public ContextGlobalObject {
  struct StaticConstants: public Object {
    static Ref<StaticConstants> constructor(jsg::Lock& js) {
      return js.alloc<StaticConstants>();
    }

    static constexpr double DOUBLE = 1.5;
    static constexpr int INT = 123;
    static constexpr bool BOOL = true;
    static constexpr kj::StringPtr STRING = "a static constant string"_kj;

    JSG_RESOURCE_TYPE(StaticConstants) {
      JSG_STATIC_CONSTANT(DOUBLE);
      JSG_STATIC_CONSTANT(INT);
      JSG_STATIC_CONSTANT(BOOL);
      JSG_STATIC_CONSTANT(STRING);
    }
  };

  struct StaticMethods: public Object {
    static Ref<StaticMethods> constructor(jsg::Lock& js) {
      return js.alloc<StaticMethods>();
    }

    static v8::Local<v8::Value> passThrough(v8::Local<v8::Value> arg) {
      return arg;
    }
    static v8::Local<v8::Value> passThroughWithInfo(
        const v8::FunctionCallbackInfo<v8::Value>& info, v8::Local<v8::Value> arg) {
      return arg;
    }

    static void voidCall() {}
    static void voidCallWithInfo(const v8::FunctionCallbackInfo<v8::Value>& info) {}

    static Unimplemented unimplementedStaticMethod() {
      return {};
    }

    static void delete_() {}

    JSG_RESOURCE_TYPE(StaticMethods) {
      JSG_STATIC_METHOD(passThrough);
      JSG_STATIC_METHOD(passThroughWithInfo);
      JSG_STATIC_METHOD(voidCall);
      JSG_STATIC_METHOD(voidCallWithInfo);
      JSG_STATIC_METHOD_NAMED(delete, delete_);
      JSG_STATIC_METHOD(unimplementedStaticMethod);
    }
  };

  struct StaticProperties: public Object {
    static Ref<StaticProperties> constructor(jsg::Lock& js) {
      return js.alloc<StaticProperties>();
    }

    // Static property returning a simple value
    static int simpleValue() {
      return 42;
    }

    // Static property returning a string
    static kj::String stringValue() {
      return kj::str("static property string");
    }

    // Static property returning an array
    static kj::Array<int> arrayValue() {
      auto array = kj::heapArray<int>(3);
      array[0] = 1;
      array[1] = 2;
      array[2] = 3;
      return kj::mv(array);
    }

    // Static property returning void (edge case)
    static void voidProperty() {
      // This should be handled gracefully even though it's unusual for a property
    }

    // A getter function to be used with JSG_STATIC_READONLY_PROPERTY_NAMED
    static double getComputedValue() {
      return 3.14159;
    }

    // Another named property getter
    static kj::String getDescription() {
      return kj::str("This is a static property");
    }

    // Static property that takes Lock& as first parameter
    static int withLockValue(jsg::Lock& js) {
      // We can use the lock here if needed, but for testing just return a value
      return 99;
    }

    // Static property with Lock& that returns an allocated object
    static kj::String withLockString(jsg::Lock& js) {
      return kj::str("property with lock");
    }

    JSG_RESOURCE_TYPE(StaticProperties) {
      JSG_STATIC_READONLY_PROPERTY(simpleValue);
      JSG_STATIC_READONLY_PROPERTY(stringValue);
      JSG_STATIC_READONLY_PROPERTY(arrayValue);
      JSG_STATIC_READONLY_PROPERTY(voidProperty);
      JSG_STATIC_READONLY_PROPERTY_NAMED(computedValue, getComputedValue);
      JSG_STATIC_READONLY_PROPERTY_NAMED(description, getDescription);
      JSG_STATIC_READONLY_PROPERTY(withLockValue);
      JSG_STATIC_READONLY_PROPERTY(withLockString);
    }
  };

  JSG_RESOURCE_TYPE(StaticContext) {
    JSG_NESTED_TYPE(StaticConstants);
    JSG_NESTED_TYPE(StaticMethods);
    JSG_NESTED_TYPE(StaticProperties);
  }
};
JSG_DECLARE_ISOLATE_TYPE(StaticIsolate,
    StaticContext,
    StaticContext::StaticConstants,
    StaticContext::StaticMethods,
    StaticContext::StaticProperties);

KJ_TEST("Static constants are exposed as constructor properties") {
  Evaluator<StaticContext, StaticIsolate> e(v8System);
  e.expectEval("StaticConstants.DOUBLE === 1.5", "boolean", "true");
  e.expectEval("StaticConstants.INT === 123", "boolean", "true");
  e.expectEval("StaticConstants.BOOL === true", "boolean", "true");
  e.expectEval("StaticConstants.STRING === 'a static constant string'", "boolean", "true");
}
KJ_TEST("Static constants are exposed as constructor prototype properties") {
  Evaluator<StaticContext, StaticIsolate> e(v8System);
  e.expectEval("StaticConstants.prototype.DOUBLE === 1.5", "boolean", "true");
  e.expectEval("StaticConstants.prototype.INT === 123", "boolean", "true");
  e.expectEval("StaticConstants.prototype.BOOL === true", "boolean", "true");
  e.expectEval(
      "StaticConstants.prototype.STRING === 'a static constant string'", "boolean", "true");
}
KJ_TEST("Static constants are exposed as object instance properties") {
  Evaluator<StaticContext, StaticIsolate> e(v8System);
  e.expectEval("new StaticConstants().DOUBLE === 1.5", "boolean", "true");
  e.expectEval("new StaticConstants().INT === 123", "boolean", "true");
  e.expectEval("new StaticConstants().BOOL === true", "boolean", "true");
  e.expectEval("new StaticConstants().STRING === 'a static constant string'", "boolean", "true");
}
KJ_TEST("Static constants are exposed as object instance prototype properties") {
  Evaluator<StaticContext, StaticIsolate> e(v8System);
  e.expectEval("Object.getPrototypeOf(new StaticConstants()).DOUBLE === 1.5", "boolean", "true");
  e.expectEval("Object.getPrototypeOf(new StaticConstants()).INT === 123", "boolean", "true");
  e.expectEval("Object.getPrototypeOf(new StaticConstants()).BOOL === true", "boolean", "true");
  e.expectEval("Object.getPrototypeOf(new StaticConstants()).STRING === 'a static constant string'",
      "boolean", "true");
}
KJ_TEST("Static methods are exposed as constructor properties") {
  Evaluator<StaticContext, StaticIsolate> e(v8System);
  e.expectEval("StaticMethods.passThrough(true)", "boolean", "true");
  e.expectEval("StaticMethods.passThroughWithInfo(true)", "boolean", "true");
  e.expectEval("StaticMethods.voidCall(); true;", "boolean", "true");
  e.expectEval("StaticMethods.voidCallWithInfo(); true;", "boolean", "true");
  e.expectEval("StaticMethods.delete(); true;", "boolean", "true");
  e.expectEval("StaticMethods.unimplementedStaticMethod()", "throws",
      "Error: Failed to execute 'unimplementedStaticMethod' on 'StaticMethods': "
      "the method is not implemented.");
  e.expectEval("new StaticMethods.passThrough(true);", "throws",
      "TypeError: StaticMethods.passThrough is not a constructor");
}
KJ_TEST("Static methods are not exposed as constructor prototype properties") {
  Evaluator<StaticContext, StaticIsolate> e(v8System);
  e.expectEval("typeof StaticMethods.prototype.passThrough === 'undefined'\n"
               "&& typeof StaticMethods.prototype.passThroughWithInfo === 'undefined'\n"
               "&& typeof StaticMethods.prototype.voidCall === 'undefined'\n"
               "&& typeof StaticMethods.prototype.voidCallWithInfo === 'undefined'\n"
               "&& typeof StaticMethods.prototype.delete === 'undefined'\n"
               "&& typeof StaticMethods.prototype.unimplementedStaticMethod === 'undefined'",
      "boolean", "true");
}
KJ_TEST("Static methods are not exposed as object instance properties") {
  Evaluator<StaticContext, StaticIsolate> e(v8System);
  e.expectEval("let obj = new StaticMethods();\n"
               "typeof obj.passThrough === 'undefined'\n"
               "&& typeof obj.passThroughWithInfo === 'undefined'\n"
               "&& typeof obj.voidCall === 'undefined'\n"
               "&& typeof obj.voidCallWithInfo === 'undefined'\n"
               "&& typeof obj.delete === 'undefined'\n"
               "&& typeof obj.unimplementedStaticMethod === 'undefined'",
      "boolean", "true");
}

KJ_TEST("Static properties are exposed as constructor properties") {
  Evaluator<StaticContext, StaticIsolate> e(v8System);
  // Test simple value property
  e.expectEval("StaticProperties.simpleValue", "number", "42");
  e.expectEval("StaticProperties.simpleValue === 42", "boolean", "true");

  // Test string property
  e.expectEval("StaticProperties.stringValue", "string", "static property string");
  e.expectEval("StaticProperties.stringValue === 'static property string'", "boolean", "true");

  // Test array property
  e.expectEval("Array.isArray(StaticProperties.arrayValue)", "boolean", "true");
  e.expectEval("StaticProperties.arrayValue.length", "number", "3");
  e.expectEval("StaticProperties.arrayValue[0]", "number", "1");
  e.expectEval("StaticProperties.arrayValue[1]", "number", "2");
  e.expectEval("StaticProperties.arrayValue[2]", "number", "3");

  // Test void property (should be undefined)
  e.expectEval("StaticProperties.voidProperty", "undefined", "undefined");

  // Test named properties
  e.expectEval("StaticProperties.computedValue", "number", "3.14159");
  e.expectEval("StaticProperties.description", "string", "This is a static property");

  // Test properties that take Lock& as first parameter
  e.expectEval("StaticProperties.withLockValue", "number", "99");
  e.expectEval("StaticProperties.withLockString", "string", "property with lock");
}

KJ_TEST("Static properties are read-only") {
  Evaluator<StaticContext, StaticIsolate> e(v8System);
  // Attempting to write to static properties should have no effect
  e.expectEval("StaticProperties.simpleValue = 100; StaticProperties.simpleValue", "number", "42");
  e.expectEval("StaticProperties.stringValue = 'new'; StaticProperties.stringValue", "string",
      "static property string");
  e.expectEval(
      "StaticProperties.computedValue = 0; StaticProperties.computedValue", "number", "3.14159");
  e.expectEval(
      "StaticProperties.withLockValue = 200; StaticProperties.withLockValue", "number", "99");
}

KJ_TEST("Static properties are not functions") {
  Evaluator<StaticContext, StaticIsolate> e(v8System);
  // Static properties should not be callable as functions
  e.expectEval("typeof StaticProperties.simpleValue", "string", "number");
  e.expectEval("StaticProperties.simpleValue()", "throws",
      "TypeError: StaticProperties.simpleValue is not a function");
  e.expectEval("new StaticProperties.simpleValue()", "throws",
      "TypeError: StaticProperties.simpleValue is not a constructor");
}

KJ_TEST("Static properties are not exposed as instance properties") {
  Evaluator<StaticContext, StaticIsolate> e(v8System);
  e.expectEval("let obj = new StaticProperties();\n"
               "typeof obj.simpleValue === 'undefined'\n"
               "&& typeof obj.stringValue === 'undefined'\n"
               "&& typeof obj.arrayValue === 'undefined'\n"
               "&& typeof obj.voidProperty === 'undefined'\n"
               "&& typeof obj.computedValue === 'undefined'\n"
               "&& typeof obj.description === 'undefined'\n"
               "&& typeof obj.withLockValue === 'undefined'\n"
               "&& typeof obj.withLockString === 'undefined'",
      "boolean", "true");
}

KJ_TEST("Static properties are not exposed on prototype") {
  Evaluator<StaticContext, StaticIsolate> e(v8System);
  e.expectEval("typeof StaticProperties.prototype.simpleValue === 'undefined'\n"
               "&& typeof StaticProperties.prototype.stringValue === 'undefined'\n"
               "&& typeof StaticProperties.prototype.arrayValue === 'undefined'\n"
               "&& typeof StaticProperties.prototype.voidProperty === 'undefined'\n"
               "&& typeof StaticProperties.prototype.computedValue === 'undefined'\n"
               "&& typeof StaticProperties.prototype.description === 'undefined'\n"
               "&& typeof StaticProperties.prototype.withLockValue === 'undefined'\n"
               "&& typeof StaticProperties.prototype.withLockString === 'undefined'",
      "boolean", "true");
}
KJ_TEST("Static methods are not exposed as object instance prototype properties") {
  Evaluator<StaticContext, StaticIsolate> e(v8System);
  e.expectEval("let objProto = Object.getPrototypeOf(new StaticMethods());\n"
               "typeof objProto.passThrough === 'undefined'\n"
               "&& typeof objProto.passThroughWithInfo === 'undefined'\n"
               "&& typeof objProto.voidCall === 'undefined'\n"
               "&& typeof objProto.voidCallWithInfo === 'undefined'\n"
               "&& typeof objProto.delete === 'undefined'\n"
               "&& typeof objProto.unimplementedStaticMethod === 'undefined'",
      "boolean", "true");
}
KJ_TEST("Static methods can be monkey-patched") {
  Evaluator<StaticContext, StaticIsolate> e(v8System);
  e.expectEval("StaticMethods.passThrough = function(a) { return false; };\n"
               "StaticMethods.passThrough(true)",
      "boolean", "false");
}

// ========================================================================================

struct ReflectionContext: public ContextGlobalObject {
  struct Super: public Object {
    JSG_RESOURCE_TYPE(Super) {}
  };

  struct Reflector: public Super {
    static jsg::Ref<Reflector> constructor(jsg::Lock& js) {
      auto result = js.alloc<Reflector>();

      // Check reflection returns null when wrapper isn't allocated.
      KJ_EXPECT(result->intReflector.get(js.v8Isolate, "foo") == kj::none);
      KJ_EXPECT(result->stringReflector.get(js.v8Isolate, "foo") == kj::none);

      return result;
    }

    kj::Maybe<int> getIntReflection(jsg::Lock& js, kj::String name) {
      return intReflector.get(js.v8Isolate, name);
    }
    kj::Maybe<kj::String> getStringReflection(jsg::Lock& js, kj::String name) {
      return stringReflector.get(js.v8Isolate, name);
    }

    PropertyReflection<int> intReflector;
    PropertyReflection<kj::String> stringReflector;

    JSG_RESOURCE_TYPE(Reflector) {
      JSG_INHERIT(Super);
      JSG_METHOD(getIntReflection);
      JSG_METHOD(getStringReflection);
    }
    JSG_REFLECTION(intReflector, stringReflector);
  };

  jsg::Ref<Reflector> makeReflector(jsg::Lock& js) {
    return js.alloc<Reflector>();
  }

  jsg::Ref<Super> makeSuper(jsg::Lock& js) {
    return js.alloc<Reflector>();
  }

  JSG_RESOURCE_TYPE(ReflectionContext) {
    JSG_NESTED_TYPE(Reflector);
    JSG_METHOD(makeReflector);
    JSG_METHOD(makeSuper);
  }
};
JSG_DECLARE_ISOLATE_TYPE(
    ReflectionIsolate, ReflectionContext, ReflectionContext::Super, ReflectionContext::Reflector);

KJ_TEST("PropertyReflection works") {
  Evaluator<ReflectionContext, ReflectionIsolate> e(v8System);
  e.expectEval("let r = new Reflector; r.getIntReflection('foo')", "object", "null");
  e.expectEval("let r = new Reflector; r.foo = 123; r.getIntReflection('foo')", "number", "123");
  e.expectEval("let r = new Reflector; r.foo = 123; r.getStringReflection('foo')", "string", "123");

  e.expectEval("let r = makeReflector(); r.foo = 123; r.getIntReflection('foo')", "number", "123");
  e.expectEval("let r = makeSuper(); r.foo = 123; r.getIntReflection('foo')", "number", "123");
}

// ========================================================================================

struct InjectLockContext: public ContextGlobalObject {
  struct Thingy: public Object {
    Thingy(int val, v8::Isolate* v8Isolate): val(val), v8Isolate(v8Isolate) {}
    int val;
    v8::Isolate* v8Isolate;

    static Ref<Thingy> constructor(Lock& js, int val) {
      return js.alloc<Thingy>(val, js.v8Isolate);
    }

    int frob(Lock& js, int val2) {
      KJ_ASSERT(js.v8Isolate == v8Isolate);
      return val + val2;
    }

    int getVal(Lock& js) {
      KJ_ASSERT(js.v8Isolate == v8Isolate);
      return val;
    }

    void setVal(Lock& js, int val) {
      KJ_ASSERT(js.v8Isolate == v8Isolate);
      this->val = val;
    }

    static int borf(Lock& js, int val) {
      return val * 2;
    }

    JSG_RESOURCE_TYPE(Thingy) {
      JSG_METHOD(frob);
      JSG_PROTOTYPE_PROPERTY(val, getVal, setVal);
      JSG_STATIC_METHOD(borf);
    }
  };

  JSG_RESOURCE_TYPE(InjectLockContext) {
    JSG_NESTED_TYPE(Thingy);
  }
};
JSG_DECLARE_ISOLATE_TYPE(InjectLockIsolate, InjectLockContext, InjectLockContext::Thingy);

KJ_TEST("Methods can take Lock& as first parameter") {
  Evaluator<InjectLockContext, InjectLockIsolate> e(v8System);
  e.expectEval("let t = new Thingy(123); t.val", "number", "123");
}

// ========================================================================================

struct JsBundleContext: public ContextGlobalObject {
  JSG_RESOURCE_TYPE(JsBundleContext) {
    JSG_CONTEXT_JS_BUNDLE(BUILTIN_BUNDLE);
  }
};
JSG_DECLARE_ISOLATE_TYPE(JsBundleIsolate, JsBundleContext);

KJ_TEST("expectEvalModule function works") {
  Evaluator<JsBundleContext, JsBundleIsolate, decltype(nullptr), JsBundleIsolate_TypeWrapper> e(
      v8System);
  e.expectEvalModule("export function run() { return 123; }", "number", "123");
}

KJ_TEST("bundle installed works") {
  Evaluator<JsBundleContext, JsBundleIsolate, decltype(nullptr), JsBundleIsolate_TypeWrapper> e(
      v8System);
  e.expectEvalModule(R"(
    import * as b from "test:resource-test-builtin";
    export function run() { return b.builtinFunction(); }
  )",
      "string", "THIS_IS_BUILTIN_FUNCTION");
}

// ========================================================================================
// Regression test for https://github.com/cloudflare/workerd/issues/4147

struct InspectableObject: public Object {
  double value;

  explicit InspectableObject(double value): value(value) {}

  static Ref<InspectableObject> constructor(jsg::Lock& js, double value) {
    return js.alloc<InspectableObject>(value);
  }

  double getValue() {
    return value;
  }

  kj::String inspectState() {
    return kj::str("active");
  }

  JSG_RESOURCE_TYPE(InspectableObject) {
    JSG_METHOD(getValue);
    JSG_READONLY_PROTOTYPE_PROPERTY(value, getValue);
    JSG_INSPECT_PROPERTY(state, inspectState);
  }
};

struct InspectContext: public ContextGlobalObject {
  JSG_RESOURCE_TYPE(InspectContext) {
    JSG_NESTED_TYPE(InspectableObject);
  }
};
JSG_DECLARE_ISOLATE_TYPE(InspectIsolate, InspectContext, InspectableObject);

KJ_TEST("Object.getOwnPropertyDescriptors does not throw on prototype with inspect properties") {
  Evaluator<InspectContext, InspectIsolate> e(v8System);

  // The core regression: getOwnPropertyDescriptors must not throw.
  e.expectEval("JSON.stringify(typeof Object.getOwnPropertyDescriptors("
               "  InspectableObject.prototype))",
      "string", "\"object\"");

  // Methods should appear as data descriptors.
  e.expectEval("typeof Object.getOwnPropertyDescriptors("
               "  InspectableObject.prototype).getValue.value",
      "string", "function");

  // The prototype property 'value' should appear as an accessor descriptor.
  e.expectEval("typeof Object.getOwnPropertyDescriptors("
               "  InspectableObject.prototype).value.get",
      "string", "function");

  // Instances should also tolerate getOwnPropertyDescriptors.
  e.expectEval("JSON.stringify(typeof Object.getOwnPropertyDescriptors("
               "  new InspectableObject(42)))",
      "string", "\"object\"");
}

// ========================================================================================

}  // namespace
}  // namespace workerd::jsg::test