Move tools tests into a general.shard directory in preparation to changing how we shard tools tests (#36108)

diff --git a/packages/flutter_tools/test/general.shard/intellij/intellij_test.dart b/packages/flutter_tools/test/general.shard/intellij/intellij_test.dart
new file mode 100644
index 0000000..181141c
--- /dev/null
+++ b/packages/flutter_tools/test/general.shard/intellij/intellij_test.dart
@@ -0,0 +1,106 @@
+// Copyright 2018 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+import 'dart:convert';
+
+import 'package:archive/archive.dart';
+import 'package:file/file.dart';
+import 'package:file/memory.dart';
+import 'package:flutter_tools/src/base/file_system.dart';
+import 'package:flutter_tools/src/doctor.dart';
+import 'package:flutter_tools/src/intellij/intellij.dart';
+
+import '../../src/common.dart';
+import '../../src/context.dart';
+
+void main() {
+  FileSystem fs;
+
+  void writeFileCreatingDirectories(String path, List<int> bytes) {
+    final File file = fs.file(path);
+    file.parent.createSync(recursive: true);
+    file.writeAsBytesSync(bytes);
+  }
+
+  setUp(() {
+    fs = MemoryFileSystem();
+  });
+
+  group('IntelliJ', () {
+    group('plugins', () {
+      testUsingContext('found', () async {
+        final IntelliJPlugins plugins = IntelliJPlugins(_kPluginsPath);
+
+        final Archive dartJarArchive =
+            buildSingleFileArchive('META-INF/plugin.xml', r'''
+<idea-plugin version="2">
+  <name>Dart</name>
+  <version>162.2485</version>
+</idea-plugin>
+''');
+        writeFileCreatingDirectories(
+            fs.path.join(_kPluginsPath, 'Dart', 'lib', 'Dart.jar'),
+            ZipEncoder().encode(dartJarArchive));
+
+        final Archive flutterJarArchive =
+            buildSingleFileArchive('META-INF/plugin.xml', r'''
+<idea-plugin version="2">
+  <name>Flutter</name>
+  <version>0.1.3</version>
+</idea-plugin>
+''');
+        writeFileCreatingDirectories(
+            fs.path.join(_kPluginsPath, 'flutter-intellij.jar'),
+            ZipEncoder().encode(flutterJarArchive));
+
+        final List<ValidationMessage> messages = <ValidationMessage>[];
+        plugins.validatePackage(messages, <String>['Dart'], 'Dart');
+        plugins.validatePackage(messages,
+            <String>['flutter-intellij', 'flutter-intellij.jar'], 'Flutter',
+            minVersion: IntelliJPlugins.kMinFlutterPluginVersion);
+
+        ValidationMessage message = messages
+            .firstWhere((ValidationMessage m) => m.message.startsWith('Dart '));
+        expect(message.message, 'Dart plugin version 162.2485');
+
+        message = messages.firstWhere(
+            (ValidationMessage m) => m.message.startsWith('Flutter '));
+        expect(message.message, contains('Flutter plugin version 0.1.3'));
+        expect(message.message, contains('recommended minimum version'));
+      }, overrides: <Type, Generator>{
+        FileSystem: () => fs,
+      });
+
+      testUsingContext('not found', () async {
+        final IntelliJPlugins plugins = IntelliJPlugins(_kPluginsPath);
+
+        final List<ValidationMessage> messages = <ValidationMessage>[];
+        plugins.validatePackage(messages, <String>['Dart'], 'Dart');
+        plugins.validatePackage(messages,
+            <String>['flutter-intellij', 'flutter-intellij.jar'], 'Flutter',
+            minVersion: IntelliJPlugins.kMinFlutterPluginVersion);
+
+        ValidationMessage message = messages
+            .firstWhere((ValidationMessage m) => m.message.startsWith('Dart '));
+        expect(message.message, contains('Dart plugin not installed'));
+
+        message = messages.firstWhere(
+            (ValidationMessage m) => m.message.startsWith('Flutter '));
+        expect(message.message, contains('Flutter plugin not installed'));
+      }, overrides: <Type, Generator>{
+        FileSystem: () => fs,
+      });
+    });
+  });
+}
+
+const String _kPluginsPath = '/data/intellij/plugins';
+
+Archive buildSingleFileArchive(String path, String content) {
+  final Archive archive = Archive();
+
+  final List<int> bytes = utf8.encode(content);
+  archive.addFile(ArchiveFile(path, bytes.length, bytes));
+
+  return archive;
+}