我无法在 WAMP 上使用 PHP 5.6 升级 PHPUnit 5答案

【问题标题】：I can't upgrade PHPUnit 5 with composer using PHP 5.6 on WAMP我无法在 WAMP 上使用 PHP 5.6 升级 PHPUnit 5
【发布时间】：2018-08-22 10:04:44
【问题描述】：

我有 PHPUnit v4.7，我尝试升级到 v5。那么为什么没有安装代码覆盖率，我该如何解决呢？我已经尝试完全删除 phpunit 文件夹。我正在使用https://phpunit.de/getting-started/phpunit-5.html中的安装命令

这是我的输出：

c:\[path to]\composer require --dev phpunit/phpunit ^5
./composer.json has been updated
> php artisan clear-compiled
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Installation request for phpunit/phpunit 5 -> satisfiable by phpunit/phpunit[5.0.0].
    - Conclusion: don't install phpunit/php-code-coverage 2.2.4
    - phpunit/phpunit 5.0.0 requires phpunit/php-code-coverage ~3.0 -> satisfiable by phpunit/php-code-coverage[3.0.0, 3.0.1, 3.0.2, 3.1.0, 3.1.1, 3.2.0, 3.2.1, 3.3.0, 3.3.1, 3.3.2, 3.3.3].
    - Can only install one of: phpunit/php-code-coverage[3.0.0, 2.2.4].
   ... <repeated with more versions>
    - Can only install one of: phpunit/php-code-coverage[3.3.3, 2.2.4].
    - Installation request for phpunit/php-code-coverage (locked at 2.2.4) -> satisfiable by phpunit/php-code-coverage[2.2.4].


Installation failed, reverting ./composer.json to its original content.

更新：这是我的 composer.json

{
    "name": "laravel/laravel",
    "description": "The Laravel Framework.",
    "keywords": ["framework", "laravel"],
    "license": "MIT",
    "type": "project",
    "require": {
        "laravel/framework": "5.0.*",
        "illuminate/html": "^5.0",
        "adamwathan/bootforms": "@dev",
        "patricktalmadge/bootstrapper": "~5",
        "frozennode/administrator": "^5.0"
    },
    "require-dev": {
        "fzaninotto/faker": "~1.4",
        "mockery/mockery": "0.9.*",
        "phpunit/phpunit": "^5",
        "laracasts/integrated": "^0.15.6"        
    },
    "autoload": {
        "classmap": [
            "database"
        ],
        "psr-4": {
            "App\\": "app/"
        }
    },
    "autoload-dev": {
        "classmap": [
            "tests/TestCase.php"
        ]
    },
    "scripts": {
        "post-install-cmd": [
            "php artisan clear-compiled",
            "php artisan optimize"
        ],
        "pre-update-cmd": [
            "php artisan clear-compiled"
        ],
        "post-update-cmd": [
            "php artisan optimize"
        ],
        "post-root-package-install": [
            "php -r \"copy('.env.example', '.env');\""
        ],
        "post-create-project-cmd": [
            "php artisan key:generate"
        ]
    },
    "config": {
        "preferred-install": "dist"
    }
}

【问题讨论】：

你试图查看你的composer.json？
@AlexKarshin 是的，我不知道缺少什么，请参阅pastebin.com/un9Hpan8
只需将所需版本的phpunit/php-code-coverage 添加到您的composer.json 中怎么样？

标签： php phpunit composer-php wamp

【解决方案1】：

您的phpunit/php-code-coverage 已锁定在2.2.4（检查composer.lock，它需要phpunit/phpunit~4（请参阅：composer show -a phpunit/php-code-coverage 2.2.4），并且您正在尝试安装phpunit/phpunit5。

现在，phpunit/phpunit 5.0.0 需要 phpunit/php-code-coverage ~3.0：

$ composer show -a phpunit/phpunit 5.0.0 | grep coverage
phpunit/php-code-coverage ~3.0

您的锁定版本是2.2.4，而您不能同时拥有两者（3.3.3、2.2.4）。

要查看特定包被锁定的原因，请运行：

composer why -t phpunit/php-code-coverage

^{注意：您也可以在末尾添加版本/约束。}

所以你可以尝试：

通过以下方式更新您现有的包以及所有依赖项：
```
composer update --with-dependencies
```

更新失败的特定包：

composer update phpunit/php-code-coverage --with-dependencies

删除 composer.lock 并通过以下方式重新安装所有软件包：
```
composer install
```

要查看当前的依赖树，运行：

composer show -t

另见：

【讨论】：

我已经使用了"phpunit/phpunit": "5.0.*","phpunit/php-code-coverage": "~3.0","phpunit/phpunit-mock-objects": "~3.0"