analyzer mock SDK: Correct some interfaces and superclasses

In this CL, I just add and correct a number of interfaces and
superclasses to classes where there did not seem to be a reason to
stray from the real Dart SDK.

* In dart:typed_data, change the SizedNativeType interface on various
  types to the intermediate `_NativeInteger` and `_NativeDouble` classes
  (and of course, add those to the mock SDK).
* In dart:html, change the `Event` to `UIEvent`, and add that class to
  the mocks.
* In dart:html, the Element class extends Node, which extends
  EventTarget.
* In dart:io, IOSink implments `StreamSink<List<int>>`, so add
  `StreamSink`, `EventSink`, and `StreamConsumer` to dart:async.
* In dart:isolate, Socket implements `Stream<Uint8List>`.

Change-Id: Ib9bc0346db2b3421b2238ff3e648bc4235fc19c3
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/462360
Reviewed-by: Paul Berry <paulberry@google.com>

pkg/analyzer/lib/src/test_utilities/mock_sdk.dart

@@ -99,6 +99,13 @@ abstract interface class StreamSubscription<T> {
   void resume();
 }
 
+abstract interface class EventSink<T> implements Sink<T> {}
+
+abstract interface class StreamConsumer<S> {}
+
+abstract interface class
+    StreamSink<S> implements EventSink<S>, StreamConsumer<S> {}
+
 abstract interface class StreamTransformer<S, T> {}
 
 abstract class StreamTransformerBase<S, T> implements StreamTransformer<S, T> {}
@@ -771,45 +778,49 @@ abstract final class Handle implements NativeType {}
 
 abstract base class Opaque implements NativeType {}
 
+abstract final class _NativeInteger implements SizedNativeType {}
+
+abstract final class _NativeDouble implements SizedNativeType {}
+
 abstract final class Void implements NativeType {}
 
-final class Int8 implements SizedNativeType {
+final class Int8 implements _NativeInteger {
   const Int8();
 }
 
-final class Uint8 implements SizedNativeType {
+final class Uint8 implements _NativeInteger {
   const Uint8();
 }
 
-final class Int16 implements SizedNativeType {
+final class Int16 implements _NativeInteger {
   const Int16();
 }
 
-final class Uint16 implements SizedNativeType {
+final class Uint16 implements _NativeInteger {
   const Uint16();
 }
 
-final class Int32 implements SizedNativeType {
+final class Int32 implements _NativeInteger {
   const Int32();
 }
 
-final class Uint32 implements SizedNativeType {
+final class Uint32 implements _NativeInteger {
   const Uint32();
 }
 
-final class Int64 implements SizedNativeType {
+final class Int64 implements _NativeInteger {
   const Int64();
 }
 
-final class Uint64 implements SizedNativeType {
+final class Uint64 implements _NativeInteger {
   const Uint64();
 }
 
-final class Float implements SizedNativeType {
+final class Float implements _NativeDouble {
   const Float();
 }
 
-final class Double implements SizedNativeType {
+final class Double implements _NativeDouble {
   const Double();
 }
 
@@ -1123,17 +1134,23 @@ class ClipboardEvent extends Event {}
 
 class Event {}
 
-class MouseEvent extends Event {}
+class UIEvent extends Event {}
 
-class FocusEvent extends Event {}
+class MouseEvent extends UIEvent {}
 
-class KeyboardEvent extends Event {}
+class FocusEvent extends UIEvent {}
+
+class KeyboardEvent extends UIEvent {}
 
 class KeyEvent implements KeyboardEvent {}
 
 abstract class ElementStream<T extends Event> implements Stream<T> {}
 
-class Element {
+class EventTarget {}
+
+class Node extends EventTarget {}
+
+class Element extends Node {
   factory Element.html(
     String? html, {
     NodeValidator? validator,
@@ -1348,7 +1365,9 @@ final MockSdkLibrary _LIB_IO = MockSdkLibrary('io', [
   MockSdkLibraryUnit('io/io.dart', r'''
 library dart.io;
 
+import 'dart:async';
 import 'dart:convert';
+import 'dart:typed_data';
 
 Never exit(int code) => throw code;
 
@@ -1401,7 +1420,7 @@ abstract class FileSystemEntity {
   FileStat statSync();
 }
 
-abstract interface class IOSink implements Sink<List<int>> {
+abstract interface class IOSink implements StreamSink<List<int>>, StringSink {
   Future<dynamic> close();
   void write(Object? object);
 }
@@ -1442,7 +1461,7 @@ abstract interface class Process {
   });
 }
 
-abstract interface class Socket implements IOSink {
+abstract interface class Socket implements Stream<Uint8List>, IOSink {
   void destroy();
 
   static Future<Socket> connect(

pkg/analyzer/test/src/dart/analysis/driver_test.dart

@@ -34906,6 +34906,7 @@ export 'dart:math' show min;
 [status] working
 [operation] linkLibraryCycle SDK
 [operation] linkLibraryCycle SDK
+[operation] linkLibraryCycle SDK
 [operation] linkLibraryCycle
   package:test/a.dart
     hashForRequirements: #H2

pkg/analyzer/test/src/dart/analysis/file_state_test.dart

@@ -4771,9 +4771,9 @@ files
         libraryImports
           library_3 dart:core synthetic
         partIncludes
-          partOfUriKnown_11
-        fileKinds: library_0 partOfUriKnown_11 partOfUriKnown_2 partOfUriKnown_12
-        cycle_4
+          partOfUriKnown_12
+        fileKinds: library_0 partOfUriKnown_12 partOfUriKnown_2 partOfUriKnown_13
+        cycle_5
           dependencies: dart:core dart:io
           libraries: library_0
           apiSignature_1
@@ -4782,12 +4782,12 @@ files
     uri: package:test/b.dart
     current
       id: file_1
-      kind: partOfUriKnown_11
+      kind: partOfUriKnown_12
         uriFile: file_0
         library: library_0
         partIncludes
           partOfUriKnown_2
-          partOfUriKnown_12
+          partOfUriKnown_13
       referencingFiles: file_0
       unlinkedKey: k03
   /home/test/lib/c.dart
@@ -4804,8 +4804,8 @@ files
   /home/test/lib/d.dart
     uri: package:test/d.dart
     current
-      id: file_11
-      kind: partOfUriKnown_12
+      id: file_12
+      kind: partOfUriKnown_13
         uriFile: file_1
         library: library_0
       referencingFiles: file_1
@@ -4831,9 +4831,9 @@ files
         libraryImports
           library_3 dart:core synthetic
         partIncludes
-          partOfUriKnown_13
-        fileKinds: library_0 partOfUriKnown_13 partOfUriKnown_12
-        cycle_5
+          partOfUriKnown_14
+        fileKinds: library_0 partOfUriKnown_14 partOfUriKnown_13
+        cycle_6
           dependencies: dart:core
           libraries: library_0
           apiSignature_2
@@ -4842,11 +4842,11 @@ files
     uri: package:test/b.dart
     current
       id: file_1
-      kind: partOfUriKnown_13
+      kind: partOfUriKnown_14
         uriFile: file_0
         library: library_0
         partIncludes
-          partOfUriKnown_12
+          partOfUriKnown_13
       referencingFiles: file_0
       unlinkedKey: k05
   /home/test/lib/c.dart
@@ -4861,8 +4861,8 @@ files
   /home/test/lib/d.dart
     uri: package:test/d.dart
     current
-      id: file_11
-      kind: partOfUriKnown_12
+      id: file_12
+      kind: partOfUriKnown_13
         uriFile: file_1
         library: library_0
       referencingFiles: file_1