CPLAT-8079: Export FormatterInputs and support following links

lib/dart_dev.dart

@@ -4,7 +4,8 @@ export 'src/dart_dev_tool.dart'
 export 'src/tools/analyze_tool.dart' show AnalyzeTool;
 export 'src/tools/compound_tool.dart'
     show ArgMapper, CompoundTool, CompoundToolMixin, takeAllArgs;
-export 'src/tools/format_tool.dart' show FormatMode, Formatter, FormatTool;
+export 'src/tools/format_tool.dart'
+    show FormatMode, Formatter, FormatterInputs, FormatTool;
 export 'src/tools/process_tool.dart' show ProcessTool;
 export 'src/tools/test_tool.dart' show TestTool;
 export 'src/tools/tuneup_check_tool.dart' show TuneupCheckTool;

lib/src/tools/format_tool.dart

@@ -120,8 +120,10 @@ class FormatTool extends DevTool {
   /// By default these globs are assumed to be relative to the current working
   /// directory, but that can be overridden via [root] for testing purposes.
   static FormatterInputs getInputs(
-      {List<Glob> exclude, bool expandCwd, String root}) {
+      {List<Glob> exclude, bool expandCwd, bool followLinks, String root}) {
     expandCwd ??= false;
+    followLinks ??= false;
+
     final includedFiles = <String>{};
     final excludedFiles = <String>{};
     final skippedLinks = <String>{};
@@ -135,7 +137,8 @@ class FormatTool extends DevTool {
 
     final dir = Directory(root ?? '.');
 
-    for (final entry in dir.listSync(recursive: true, followLinks: false)) {
+    for (final entry
+        in dir.listSync(recursive: true, followLinks: followLinks)) {
       final relative = p.relative(entry.path, from: dir.path);
 
       if (entry is Link) {
@@ -177,15 +180,15 @@ class FormatTool extends DevTool {
 
 class FormatterInputs {
   FormatterInputs(this.includedFiles,
-      {this.skippedLinks, this.excludedFiles, this.hiddenDirectories});
-
-  final Set<String> includedFiles;
-
-  final Set<String> skippedLinks;
+      {this.excludedFiles, this.hiddenDirectories, this.skippedLinks});
 
   final Set<String> excludedFiles;
 
   final Set<String> hiddenDirectories;
+
+  final Set<String> includedFiles;
+
+  final Set<String> skippedLinks;
 }
 
 /// A declarative representation of an execution of the [FormatTool].
@@ -341,17 +344,17 @@ FormatExecution buildExecution(
 
   if (inputs.excludedFiles?.isNotEmpty ?? false) {
     _log.fine('Excluding these paths from formatting:\n  '
-        '${inputs.excludedFiles.join('\n')}');
+        '${inputs.excludedFiles.join('\n  ')}');
   }
 
   if (inputs.skippedLinks?.isNotEmpty ?? false) {
     _log.fine('Excluding these links from formatting:\n  '
-        '${inputs.skippedLinks.join('\n')}');
+        '${inputs.skippedLinks.join('\n  ')}');
   }
 
   if (inputs.hiddenDirectories?.isNotEmpty ?? false) {
     _log.fine('Excluding these hidden directories from formatting:\n  '
-        '${inputs.hiddenDirectories.join('\n')}');
+        '${inputs.hiddenDirectories.join('\n  ')}');
   }
 
   final dartfmt = buildProcess(formatter);

test/tools/fixtures/format/globs/links/lib-link

@@ -0,0 +1 @@
+../lib/

test/tools/fixtures/format/globs/links/link.dart

@@ -0,0 +1 @@
+../linked.dart

test/tools/format_tool_test.dart

@@ -7,6 +7,7 @@ import 'package:dart_dev/src/dart_dev_tool.dart';
 import 'package:glob/glob.dart';
 import 'package:io/io.dart';
 import 'package:logging/logging.dart';
+import 'package:path/path.dart' as p;
 import 'package:test/test.dart';
 
 import 'package:dart_dev/src/tools/format_tool.dart';
@@ -15,7 +16,7 @@ import '../log_matchers.dart';
 import 'shared_tool_tests.dart';
 
 void main() {
-  group('FormatCommand', () {
+  group('FormatTool', () {
     sharedDevToolTests(() => FormatTool());
 
     test('toCommand overrides the argParser', () {
@@ -37,6 +38,73 @@ void main() {
 
       expect(argParser.options['formatter-args'].type, OptionType.single);
     });
+
+    group('getInputs', () {
+      final root = 'test/tools/fixtures/format/globs';
+
+      test('no excludes', () {
+        final formatterInputs = FormatTool.getInputs(root: root);
+        expect(formatterInputs.includedFiles, unorderedEquals({'.'}));
+        expect(formatterInputs.excludedFiles, null);
+        expect(formatterInputs.hiddenDirectories, null);
+        expect(formatterInputs.skippedLinks, null);
+      });
+
+      test('custom excludes', () {
+        FormatterInputs formatterInputs =
+            FormatTool.getInputs(exclude: [Glob('*_exclude.dart')], root: root);
+
+        expect(
+            formatterInputs.includedFiles,
+            unorderedEquals({
+              'file.dart',
+              'lib/sub/file.dart',
+              'linked.dart',
+              'other/file.dart',
+            }));
+
+        expect(formatterInputs.excludedFiles,
+            unorderedEquals({'should_exclude.dart'}));
+        expect(formatterInputs.hiddenDirectories,
+            unorderedEquals({'.dart_tool_test'}));
+        expect(formatterInputs.skippedLinks,
+            unorderedEquals({'links/lib-link', 'links/link.dart'}));
+      });
+
+      test('empty inputs due to excludes config', () async {
+        expect(
+            FormatTool.getInputs(exclude: [Glob('**')], root: root)
+                .includedFiles,
+            isEmpty);
+      });
+
+      test('expandCwd forces . to be expanded to all files', () async {
+        final formatterInputs =
+            FormatTool.getInputs(expandCwd: true, root: root);
+        expect(
+            formatterInputs.includedFiles,
+            unorderedEquals({
+              'file.dart',
+              'lib/sub/file.dart',
+              'linked.dart',
+              'other/file.dart',
+              'should_exclude.dart',
+            }));
+        expect(formatterInputs.excludedFiles, isEmpty);
+      });
+
+      test('followLinks follows linked files and directories', () async {
+        final formatterInputs = FormatTool.getInputs(
+            expandCwd: true, followLinks: true, root: p.join(root, 'links'));
+        expect(
+            formatterInputs.includedFiles,
+            unorderedEquals({
+              'lib-link/sub/file.dart',
+              'link.dart',
+            }));
+        expect(formatterInputs.skippedLinks, isEmpty);
+      });
+    });
   });
 
   group('buildArgs', () {
@@ -217,57 +285,6 @@ void main() {
     });
   });
 
-  group('getFormatterInputs', () {
-    final root = 'test/tools/fixtures/format/globs';
-
-    test('no excludes', () {
-      final formatterInputs = FormatTool.getInputs(root: root);
-      expect(formatterInputs.includedFiles, unorderedEquals({'.'}));
-      expect(formatterInputs.excludedFiles, null);
-      expect(formatterInputs.hiddenDirectories, null);
-      expect(formatterInputs.skippedLinks, null);
-    });
-
-    test('custom excludes', () {
-      FormatterInputs formatterInputs =
-          FormatTool.getInputs(exclude: [Glob('*_exclude.dart')], root: root);
-
-      expect(
-          formatterInputs.includedFiles,
-          unorderedEquals({
-            'file.dart',
-            'lib/sub/file.dart',
-            'other/file.dart',
-          }));
-
-      expect(formatterInputs.excludedFiles,
-          unorderedEquals({'should_exclude.dart'}));
-      expect(formatterInputs.hiddenDirectories,
-          unorderedEquals({'.dart_tool_test'}));
-      expect(formatterInputs.skippedLinks,
-          unorderedEquals({'lib-link', 'link.dart'}));
-    });
-
-    test('empty inputs due to excludes config', () async {
-      expect(
-          FormatTool.getInputs(exclude: [Glob('**')], root: root).includedFiles,
-          isEmpty);
-    });
-
-    test('expandCwd forces . to be expanded to all files', () async {
-      final formatterInputs = FormatTool.getInputs(expandCwd: true, root: root);
-      expect(
-          formatterInputs.includedFiles,
-          unorderedEquals({
-            'file.dart',
-            'lib/sub/file.dart',
-            'other/file.dart',
-            'should_exclude.dart',
-          }));
-      expect(formatterInputs.excludedFiles, isEmpty);
-    });
-  });
-
   group('buildProcess', () {
     test('dartfmt', () {
       final process = buildProcess(Formatter.dartfmt);