flutter pub add matcher根據套件公開資料產生的選型評估，僅供參考。
matcher 套件為在 Dart 中定義測試預期提供了一個彈性且可擴展的框架。它包含豐富的內建匹配器，用於常見的斷言，例如相等性、類型檢查和集合比較。開發人員也可以建立自訂匹配器，以清楚簡潔地表達複雜的驗證邏輯。此套件是使用 Dart 測試生態系統撰寫可讀性和可維護性測試的重要組成部分。
以下為關聯原始碼儲存庫的 README 原文快照，最新內容請造訪原始碼儲存庫。
Welcome! package:test is the standard testing library for Dart and
Flutter. If you have questions about Dart testing, please see the docs for
package:test. package:test_api and package:test_core
are implementation details and generally not user-facing.
package:checks is a relatively new library for expressing test
expectations. It's a more modern version of package:matcher and features a
literate API.
| Package | Description | Issues | Version |
|---|---|---|---|
| checks | A framework for checking values against expectations and building custom expectations. |  |
 |
| fake_async | Fake asynchronous events such as timers and microtasks for deterministic testing. | |
 |
| matcher | Support for specifying test expectations via an extensible Matcher class. Also includes a number of built-in Matcher implementations for common cases. | |
 |
| test | A full featured library for writing and running Dart tests across platforms. | |
 |
| test_api | The user facing API for structuring Dart tests and checking expectations. |  |
|
| test_core | A basic library for writing tests and running them on the VM. |  |
|
| test_descriptor | An API for defining and verifying files and directory structures. | |
 |
| test_process | Test processes: starting; validating stdout and stderr; checking exit code. | |
 |
依賴清單 5 項
^2.10.0^1.8.0^1.10.0^1.2.0>=0.5.0 <0.8.0
