[flutter_tools] fix formatting regression in analyze and add full coverage (#62593)

packages/flutter_tools/lib/src/commands/analyze_base.dart

@@ -144,7 +144,7 @@ abstract class AnalyzeBase {
     if (undocumentedMembers > 0) {
       errorsMessage.write(' (ran in ${seconds}s; $dartDocMessage)');
     } else {
-      errorsMessage.write(' (ran in ${seconds}s;)');
+      errorsMessage.write(' (ran in ${seconds}s)');
     }
     return errorsMessage.toString();
   }

packages/flutter_tools/test/general.shard/commands/analyze_base_test.dart

+// Copyright 2014 The Flutter 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 'package:flutter_tools/src/commands/analyze_base.dart';
+
+import '../../src/common.dart';
+
+void main() {
+  testWithoutContext('AnalyzeBase message formatting with zero issues', () async {
+    final String message = AnalyzeBase.generateErrorsMessage(
+      issueCount: 0,
+      seconds: '10',
+      undocumentedMembers: 0,
+    );
+
+    expect(message, 'No issues found! (ran in 10s)');
+  });
+
+  testWithoutContext('AnalyzeBase message formatting with undocumented issues', () async {
+    final String message = AnalyzeBase.generateErrorsMessage(
+      issueCount: 0,
+      seconds: '10',
+      undocumentedMembers: 1,
+      dartDocMessage: 'test'
+    );
+
+    expect(message, 'No issues found! (ran in 10s; test)');
+  });
+
+  testWithoutContext('AnalyzeBase message formatting with one issue', () async {
+    final String message = AnalyzeBase.generateErrorsMessage(
+      issueCount: 1,
+      seconds: '10',
+      undocumentedMembers: 0,
+    );
+
+    expect(message, '1 issue found. (ran in 10s)');
+  });
+
+  testWithoutContext('AnalyzeBase message formatting with N issues', () async {
+    final String message = AnalyzeBase.generateErrorsMessage(
+      issueCount: 10,
+      seconds: '10',
+      undocumentedMembers: 0,
+    );
+
+    expect(message, '10 issues found. (ran in 10s)');
+  });
+
+  testWithoutContext('AnalyzeBase message with analyze files', () async {
+    final String message = AnalyzeBase.generateErrorsMessage(
+      issueCount: 0,
+      seconds: '10',
+      undocumentedMembers: 0,
+      files: 10,
+    );
+
+    expect(message, 'No issues found! • analyzed 10 files (ran in 10s)');
+  });
+
+  testWithoutContext('AnalyzeBase message with positive issue diff', () async {
+    final String message = AnalyzeBase.generateErrorsMessage(
+      issueCount: 1,
+      seconds: '10',
+      undocumentedMembers: 0,
+      issueDiff: 1,
+    );
+
+    expect(message, '1 issue found. (1 new) (ran in 10s)');
+  });
+
+  testWithoutContext('AnalyzeBase message with negative issue diff', () async {
+    final String message = AnalyzeBase.generateErrorsMessage(
+      issueCount: 0,
+      seconds: '10',
+      undocumentedMembers: 0,
+      issueDiff: -1,
+    );
+
+    expect(message, 'No issues found! (1 fixed) (ran in 10s)');
+  });
+}